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Journal articles on the topic 'Burkholderia phytofirmans'

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Published: 4 June 2021
Last updated: 12 February 2022

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1

Mangmang, Jonathan, Rosalind Deaker, and Gordon Rogers. "Effects of Plant Growth Promoting Rhizobacteria on Seed Germination Characteristics of Tomato and Lettuce." Journal of Tropical Crop Science 1, no. 2 (January 12, 2015): 35–40. http://dx.doi.org/10.29244/jtcs.1.2.35-40.

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Plant growth promoting rhizobacteria (PGPR) represent a wide genera of rhizospheric bacteria which, when introduced in association with the host plant in proper amount, can enhance plant growth and productivity. A series of experiments were conducted to determine the germination responses of tomato and lettuce to PGPR inoculation. Seeds were inoculated with different strains of Azospirillum brasilense Sp7, Sp7-S and Sp245, Herbaspirillum seropedicea and Burkholderia phytofirmans PsJNT. The results reveal that Sp7-S inoculation yielded better germination rate and total germination of tomato. PGPR inoculation, except Sp7, produced longer (28%) and heavier (37%) roots with superior vigor. In lettuce, PGPR strains, except B. phytofirmans PsJNT, and Sp7 and B. phytofirmans PsJNT, enhanced germination vigor and length of roots (26%), respectively. The results provide further evidence concerning their importance as PGPR and indicate the potential of exploiting some of these PGPR to improve seedling emergence and establishment of vegetables.
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2

Zúñiga, Ana, María Josefina Poupin, Raúl Donoso, Thomas Ledger, Nicolás Guiliani, Rodrigo A. Gutiérrez, and Bernardo González. "Quorum Sensing and Indole-3-Acetic Acid Degradation Play a Role in Colonization and Plant Growth Promotion of Arabidopsis thaliana by Burkholderia phytofirmans PsJN." Molecular Plant-Microbe Interactions® 26, no. 5 (May 2013): 546–53. http://dx.doi.org/10.1094/mpmi-10-12-0241-r.

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Although not fully understood, molecular communication in the rhizosphere plays an important role regulating traits involved in plant–bacteria association. Burkholderia phytofirmans PsJN is a well-known plant-growth-promoting bacterium, which establishes rhizospheric and endophytic colonization in different plants. A competent colonization is essential for plant-growth-promoting effects produced by bacteria. Using appropriate mutant strains of B. phytofirmans, we obtained evidence for the importance of N-acyl homoserine lactone-mediated (quorum sensing) cell-to-cell communication in efficient colonization of Arabidopsis thaliana plants and the establishment of a beneficial interaction. We also observed that bacterial degradation of the auxin indole-3-acetic acid (IAA) plays a key role in plant-growth-promoting traits and is necessary for efficient rhizosphere colonization. Wildtype B. phytofirmans but not the iacC mutant in IAA mineralization is able to restore promotion effects in roots of A. thaliana in the presence of exogenously added IAA, indicating the importance of this trait for promoting primary root length. Using a transgenic A. thaliana line with suppressed auxin signaling (miR393) and analyzing the expression of auxin receptors in wild-type inoculated plants, we provide evidence that auxin signaling in plants is necessary for the growth promotion effects produced by B. phytofirmans. The interplay between ethylene and auxin signaling was also confirmed by the response of the plant to a 1-aminocyclopropane-1-carboxylate deaminase bacterial mutant strain.
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3

Kim, Ho-Bin, Min-Ju Park, Hee-Chan Yang, Dong-Shan An, Hai-Zhu Jin, and Deok-Chun Yang. "Burkholderia ginsengisoli sp. nov., a β-glucosidase-producing bacterium isolated from soil of a ginseng field." International Journal of Systematic and Evolutionary Microbiology 56, no. 11 (November 1, 2006): 2529–33. http://dx.doi.org/10.1099/ijs.0.64387-0.

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A bacterial strain (designated KMY03T) that possesses β-glucosidase activity was isolated from soil from a ginseng field in South Korea and was characterized in order to determine its taxonomic position. The bacterium was found to comprise Gram-negative, rod-shaped, motile cells with unipolar polytrichous flagella. On the basis of 16S rRNA gene sequence similarity, strain KMY03T was shown to belong to the family Burkholderiaceae of the Betaproteobacteria, being most closely related to Burkholderia caledonica LMG 19076T (97.8 %), Burkholderia terricola LMG 20594T (97.5 %), Burkholderia xenovorans LMG 21463T (97.4 %) and Burkholderia phytofirmans LMG 22146T (97.3 %). Chemotaxonomic data (major ubiquinone, Q-8; major fatty acids, C17 : 0 cyclo, C16 : 0, C19 : 0 cyclo ω8c and summed feature 2) supported the affiliation of the novel strain with the genus Burkholderia. The results of DNA–DNA hybridizations and physiological and biochemical tests allowed the strain to be differentiated genotypically and phenotypically from Burkholderia species with validly published names. On the basis of these data, strain KMY03T represents a novel species of the genus Burkholderia, for which the name Burkholderia ginsengisoli sp. nov. is proposed. The type strain is KMY03T (=KCTC 12389T=NBRC 100965T).
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4

Sessitsch, A., T. Coenye, A. V. Sturz, P. Vandamme, E. Ait Barka, J. F. Salles, J. D. Van Elsas, et al. "Burkholderia phytofirmans sp. nov., a novel plant-associated bacterium with plant-beneficial properties." International Journal of Systematic and Evolutionary Microbiology 55, no. 3 (May 1, 2005): 1187–92. http://dx.doi.org/10.1099/ijs.0.63149-0.

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A Gram-negative, non-sporulating, rod-shaped, motile bacterium, with a single polar flagellum, designated strain PsJNT, was isolated from surface-sterilized onion roots. This isolate proved to be a highly effective plant-beneficial bacterium, and was able to establish rhizosphere and endophytic populations associated with various plants. Seven related strains were recovered from Dutch soils. Based on 16S rRNA gene sequence data, strain PsJNT and the Dutch strains were identified as representing a member of the genus Burkholderia, as they were closely related to Burkholderia fungorum (98·7 %) and Burkholderia phenazinium (98·5 %). Analysis of whole-cell protein profiles and DNA–DNA hybridization experiments confirmed that all eight strains belonged to a single species. Strain PsJNT had a DNA G+C content of 61·0 mol%. Only low levels of DNA–DNA hybridization to closely related species were found. Qualitative and quantitative differences in fatty acid composition between strain PsJNT and closely related species were identified. The predominant fatty acids in strain PsJNT were 16 : 0, 18 : 1ω7c and summed feature 3 (comprising 16 : 1ω7c and/or iso-15 : 0 2-OH). Isolate PsJNT showed high 1-aminocyclopropane-1-carboxylate deaminase activity and is therefore able to lower the ethylene level in a developing or stressed plant. Production of the quorum-sensing signal compound 3-hydroxy-C8-homoserine lactone was detected. Based on the results of this polyphasic taxonomic study, strain PsJNT and the seven Dutch isolates are considered to represent a single, novel species, for which the name Burkholderia phytofirmans sp. nov. is proposed. The type strain is strain PsJNT (=LMG 22146T=CCUG 49060T).
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5

Aguilar Diaz, Trinidad, Vincenzo Bertolini, Guillermo Carrillo Castañeda, Griselda Karina Guillén Navarro, Luz Verónica García Fajardo, and Ricardo Alberto Castro Chan. "Rizobacterias promotoras de crecimiento en Guarianthe skinneri (Orchidaceae)." Revista de Biología Tropical 66, no. 3 (July 4, 2018): 953. http://dx.doi.org/10.15517/rbt.v66i3.30638.

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The Guarianthe skinneri orchid is included in NOM-059-ECOL-2010, Mexico standard as an endangered species. In order to study PGPR (promoting growth plant rhizobacteria) from this orchid, 10 roots were collected from different plants to isolate bacteria associated with the roots, which were analyzed by in vitro tests such as: production of AIA, nitrogen fixation, interaction with the mycorrhizal fungus Thanatephorus sp. strain RG26 and phosphate solubilization. We obtain 71 bacterial isolates, 10 strains of them were characterized by sequencing with the 16d rDNA marker identifying six bacteria: Sphingomonas sp. Sinorhizobium sp. Bacillus sp. Nocardia cerradoensis, Bacillus megaterium and Burkholderia phytofirmans. We observed that the bacterium Sinorhizobium sp. produced a greater amount of AIA (69.189 μg/ml) and Bacillus sp. performed greater acetylene reduction (10.251 nmol cultivo/96h). In the interactions of the bacteria and the fungus RG26, four categories were presented (extremely positive, positive, antagonism 50-50 and inhibition). In relation to the solubilization of phosphate, Burkholderia phytofirmans presented higher IS after 48 and 96 hr with an IS of 3.11 and 3.48, respectively. The results indicate that Bacillus sp. it could have the best characteristics to promote the development of the G. skinneri orchid by inoculating seeds and seedlings.
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Fernandez, Olivier, Andreas Theocharis, Sophie Bordiec, Regina Feil, Lucile Jacquens, Christophe Clément, Florence Fontaine, and Essaid Ait Barka. "Burkholderia phytofirmans PsJN Acclimates Grapevine to Cold by Modulating Carbohydrate Metabolism." Molecular Plant-Microbe Interactions® 25, no. 4 (April 2012): 496–504. http://dx.doi.org/10.1094/mpmi-09-11-0245.

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Low temperatures damage many temperate crops, including grapevine, which, when exposed to chilling, can be affected by symptoms ranging from reduced yield up to complete infertility. We have previously demonstrated that Burkholderia phytofirmans PsJN, a plant growth-promoting rhizobacteria (PGPR) that colonizes grapevine, is able to reduce chilling-induced damage. We hypothesized that the induced tolerance may be explained at least partly by the impact of bacteria on grapevine photosynthesis or carbohydrate metabolism during cold acclimation. To investigate this hypothesis, we monitored herein the fluctuations of photosynthesis parameters (net photosynthesis [Pn], intercellular CO2 concentration, stomatal conductances, ΦPSII, and total chlorophyll concentration), starch, soluble sugars (glucose, fructose, saccharose, mannose, raffinose, and maltose), and their precursors during 5 days of chilling exposure (4°C) on grapevine plantlets. Bacterization affects photosynthesis in a non–stomatal dependent pattern and reduced long-term impact of chilling on Pn. Furthermore, all studied carbohydrates known to be involved in cold stress tolerance accumulate in non-chilled bacterized plantlets, although some of them remained more concentrated in the latter after chilling exposure. Overall, our results suggest that modification of carbohydrate metabolism in bacterized grapevine plantlets may be one of the major effects by which this PGPR reduces chilling-induced damage.
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7

Rusch, Antje, Shaer Islam, Pratixa Savalia, and Jan P. Amend. "Burkholderia insulsa sp. nov., a facultatively chemolithotrophic bacterium isolated from an arsenic-rich shallow marine hydrothermal system." International Journal of Systematic and Evolutionary Microbiology 65, Pt_1 (January 1, 2015): 189–94. http://dx.doi.org/10.1099/ijs.0.064477-0.

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Enrichment cultures inoculated with hydrothermally influenced nearshore sediment from Papua New Guinea led to the isolation of an arsenic-tolerant, acidophilic, facultatively aerobic bacterial strain designated PNG-AprilT. Cells of this strain were Gram-stain-negative, rod-shaped, motile and did not form spores. Strain PNG-AprilT grew at temperatures between 4 °C and 40 °C (optimum 30–37 °C), at pH 3.5 to 8.3 (optimum pH 5–6) and in the presence of up to 2.7 % NaCl (optimum 0–1.0 %). Both arsenate and arsenite were tolerated up to concentrations of at least 0.5 mM. Metabolism in strain PNG-AprilT was strictly respiratory. Heterotrophic growth occurred with O2 or nitrate as electron acceptors, and aerobic lithoautotrophic growth was observed with thiosulfate or nitrite as electron donors. The novel isolate was capable of N2-fixation. The respiratory quinones were Q-8 and Q-7. Phylogenetically, strain PNG-AprilT belongs to the genus Burkholderia and shares the highest 16S rRNA gene sequence similarity with the type strains of Burkholderia fungorum (99.8 %), Burkholderia phytofirmans (98.8 %), Burkholderia caledonica (98.4 %) and Burkholderia sediminicola (98.4 %). Differences from these related species in several physiological characteristics (lipid composition, carbohydrate utilization, enzyme profiles) and DNA–DNA hybridization suggested the isolate represents a novel species of the genus Burkholderia , for which we propose the name Burkholderia insulsa sp. nov. The type strain is PNG-AprilT ( = DSM 28142T = LMG 28183T).
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8

Yang, Aizheng, Saqib Saleem Akhtar, Qiang Fu, Muhammad Naveed, Shahid Iqbal, Thomas Roitsch, and Sven-Erik Jacobsen. "Burkholderia Phytofirmans PsJN Stimulate Growth and Yield of Quinoa under Salinity Stress." Plants 9, no. 6 (May 26, 2020): 672. http://dx.doi.org/10.3390/plants9060672.

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One of the major challenges in agriculture is to ensure sufficient and healthy food availability for the increasing world population in near future. This requires maintaining sustainable cultivation of crop plants under varying environmental stresses. Among these stresses, salinity is the second most abundant threat worldwide after drought. One of the promising strategies to mitigate salinity stress is to cultivate halotolerant crops such as quinoa. Under high salinity, performance can be improved by plant growth promoting bacteria (PGPB). Among PGPB, endophytic bacteria are considered better in stimulating plant growth compared to rhizosphere bacteria because of their ability to colonize both in plant rhizosphere and plant interior. Therefore, in the current study, a pot experiment was conducted in a controlled greenhouse to investigate the effects of endophytic bacteria i.e., Burkholderia phytofirmans PsJN on improving growth, physiology and yield of quinoa under salinity stress. At six leaves stage, plants were irrigated with saline water having either 0 (control) or 400 mM NaCl. The results indicated that plants inoculated with PsJN mitigated the negative effects of salinity on quinoa resulting in increased shoot biomass, grain weight and grain yield by 12%, 18% and 41% respectively, over un-inoculated control. Moreover, inoculation with PsJN improved osmotic adjustment and ion homeostasis ability. In addition, leaves were also characterized for five key reactive oxygen species (ROS) scavenging enzyme in response to PsJN treatment. This showed higher activity of catalase (CAT) and dehydroascobate reductase (DHAR) in PsJN-treated plants. These findings suggest that inoculation of quinoa seeds with Burkholderia phytofirmans PsJN could be used for stimulating growth and yield of quinoa in highly salt-affected soils.
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9

Naveed, Muhammad, M. Baqir Hussain, Zahir A. Zahir, Birgit Mitter, and Angela Sessitsch. "Drought stress amelioration in wheat through inoculation with Burkholderia phytofirmans strain PsJN." Plant Growth Regulation 73, no. 2 (November 30, 2013): 121–31. http://dx.doi.org/10.1007/s10725-013-9874-8.

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10

Wang, Qi, Shan Gao, Xiang Ma, Xinxin Mao, Linyan He, and Xiafang Sheng. "Distinct mineral weathering effectiveness and metabolic activity between mineral-weathering bacteria Burkholderia metallica F22 and Burkholderia phytofirmans G34." Chemical Geology 489 (June 2018): 38–45. http://dx.doi.org/10.1016/j.chemgeo.2018.05.016.

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11

Ait Barka, Essaid, Jerzy Nowak, and Christophe Clément. "Enhancement of Chilling Resistance of Inoculated Grapevine Plantlets with a Plant Growth-Promoting Rhizobacterium, Burkholderia phytofirmans Strain PsJN." Applied and Environmental Microbiology 72, no. 11 (September 15, 2006): 7246–52. http://dx.doi.org/10.1128/aem.01047-06.

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ABSTRACT In vitro inoculation of Vitis vinifera L. cv. Chardonnay explants with a plant growth-promoting rhizobacterium, Burkholderia phytofirmans strain PsJN, increased grapevine growth and physiological activity at a low temperature. There was a relationship between endophytic bacterial colonization of the grapevine plantlets and their growth at both ambient (26°C) and low (4°C) temperatures and their sensitivities to chilling. The major benefits of bacterization were observed on root growth (11.8- and 10.7-fold increases at 26°C and 4°C, respectively) and plantlet biomass (6- and 2.2-fold increases at 26°C and 4°C, respectively). The inoculation with PsJN also significantly improved plantlet cold tolerance compared to that of the nonbacterized control. In nonchilled plantlets, bacterization enhanced CO2 fixation and O2 evolution 1.3 and 2.2 times, respectively. The nonbacterized controls were more sensitive to exposure to low temperatures than were the bacterized plantlets, as indicated by several measured parameters. Moreover, relative to the noninoculated controls, bacterized plantlets had significantly increased levels of starch, proline, and phenolics. These increases correlated with the enhancement of cold tolerance of the grapevine plantlets. In summary, B. phytofirmans strain PsJN inoculation stimulates grapevine growth and improves its ability to withstand cold stress.
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Naveed, M., B. Mitter, A. Sessitsch, and T. G. Reichenauer. "ENDOPHYTIC COLONIZATION OF BURKHOLDERIA PHYTOFIRMANS STRAIN PSJN INDUCES DROUGHT-STRESS TOLERANCE IN MAIZE." Acta Horticulturae, no. 1009 (October 2013): 117–25. http://dx.doi.org/10.17660/actahortic.2013.1009.14.

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13

Vu, Hong Phuc, and John W. Moreau. "Effects of Environmental Parameters on Thiocyanate Biodegradation by Burkholderia phytofirmans Candidate Strain ST01hv." Environmental Engineering Science 35, no. 1 (January 2018): 62–66. http://dx.doi.org/10.1089/ees.2016.0351.

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14

Weilharter, A., B. Mitter, M. V. Shin, P. S. G. Chain, J. Nowak, and A. Sessitsch. "Complete Genome Sequence of the Plant Growth-Promoting Endophyte Burkholderia phytofirmans Strain PsJN." Journal of Bacteriology 193, no. 13 (May 6, 2011): 3383–84. http://dx.doi.org/10.1128/jb.05055-11.

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Wang, Bingxue, John R. Seiler, and Chuansheng Mei. "Burkholderia phytofirmans strain PsJN advanced development and altered leaf level physiology of switchgrass." Biomass and Bioenergy 83 (December 2015): 493–500. http://dx.doi.org/10.1016/j.biombioe.2015.10.029.

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Kurepin, Leonid V., Jae Min Park, George Lazarovits, and Norman P. A. Hüner. "Involvement of plant stress hormones in Burkholderia phytofirmans-induced shoot and root growth promotion." Plant Growth Regulation 77, no. 2 (March 12, 2015): 179–87. http://dx.doi.org/10.1007/s10725-015-0049-7.

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17

Sheu, Shih-Yi, Ming-Hui Chen, Wendy Y. Y. Liu, Mitchell Andrews, Euan K. James, Julie K. Ardley, Sofie E. De Meyer, et al. "Burkholderia dipogonis sp. nov., isolated from root nodules of Dipogon lignosus in New Zealand and Western Australia." International Journal of Systematic and Evolutionary Microbiology 65, Pt_12 (December 1, 2015): 4716–23. http://dx.doi.org/10.1099/ijsem.0.000639.

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Seven strains, ICMP 19430T, ICMP 19429, ICMP 19431, WSM4637, WSM4638, WSM4639 and WSM4640, were isolated from nitrogen-fixing nodules on roots of the invasive South African legume Dipogon lignosus (subfamily Papilionoideae, tribe Phaseoleae) in New Zealand and Western Australia, and their taxonomic positions were investigated by using a polyphasic approach. All seven strains grew at 10–37 °C (optimum, 25–30 °C), at pH 4.0–9.0 (optimum, pH 6.0–7.0) and with 0–2 % (w/v) NaCl (optimum growth in the absence of NaCl). On the basis of 16S rRNA gene sequence analysis, the strains showed 99.0–99.5 % sequence similarity to the closest type strain, Burkholderia phytofirmans PsJNT, and 98.4–99.7 % sequence similarity to Burkholderia caledonica LMG 19076T. The predominant fatty acids were C18 : 1ω7c (21.0 % of the total fatty acids in strain ICMP 19430T), C16 : 0 (19.1 %), C17 : 0 cyclo (18.9 %), summed feature 3 (C16 : 1ω7c and/or C16 : 1ω6c; 10.7 %) and C19 : 0 cyclo ω8c (7.5 %). The polar lipid profile consisted of a mixture of phosphatidylethanolamine, phosphatidylglycerol, diphosphatidylglycerol and several uncharacterized aminophospholipids and phospholipids. The major isoprenoid quinone was Q-8 and the DNA G+C content of strain ICMP 19430T was 63.2 mol%. The DNA–DNA relatedness of the novel strains with respect to the closest neighbouring members of the genus Burkholderia was 55 % or less. On the basis of 16S rRNA and recA gene sequence similarities and chemotaxonomic and phenotypic data, these strains represent a novel symbiotic species in the genus Burkholderia, for which the name Burkholderia dipogonis sp. nov. is proposed, with the type strain ICMP 19430T ( = LMG 28415T = HAMBI 3637T).
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Wang, Bingxue, Chuansheng Mei, and John R. Seiler. "Early growth promotion and leaf level physiology changes in Burkholderia phytofirmans strain PsJN inoculated switchgrass." Plant Physiology and Biochemistry 86 (January 2015): 16–23. http://dx.doi.org/10.1016/j.plaphy.2014.11.008.

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Theocharis, Andreas, Sophie Bordiec, Olivier Fernandez, Sandra Paquis, Sandrine Dhondt-Cordelier, Fabienne Baillieul, Christophe Clément, and Essaïd Ait Barka. "Burkholderia phytofirmans PsJN Primes Vitis vinifera L. and Confers a Better Tolerance to Low Nonfreezing Temperatures." Molecular Plant-Microbe Interactions® 25, no. 2 (February 2012): 241–49. http://dx.doi.org/10.1094/mpmi-05-11-0124.

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Several endophytic bacteria reportedly induce resistance to biotic stress and abiotic stress tolerance in several plant species. Burkholderia phytofirmans PsJN is a plant-growth-promoting rhizobacterium (PGPR) that is able to colonize grapevine tissues and induce resistance to gray mold. Further, PsJN induces physiological changes that increase grapevine tolerance to low nonfreezing temperatures. To better understand how bacteria induced the observed phenomena, stress-related gene expression and metabolite accumulation were monitored in 6-week-old Chardonnay grapevine plantlets after exposure to low nonfreezing temperatures. Under normal conditions (26°C), plantlet bacterization had no significant effect on the monitored parameters. By contrast, at 4°C, both stress-related gene transcripts and metabolite levels increased earlier and faster, and reached higher levels in PsJN-bacterized plantlets than in nonbacterized counterparts, in accordance with priming phenomena. The recorded changes may be correlated with the tolerance to cold stress conferred by the presence of PsJN. This is the first time that PGPR-induced priming has been shown to protect plants against low-temperature stress. Moreover, 1 week after cold exposure, levels of stress-related metabolites had declined more in PsJN-bacterized plants, suggesting that the endophyte is involved in the cold acclimation process via the scavenging system.
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Afzal, Muhammad, Sumia Khan, Samina Iqbal, Muhammad Sajjad Mirza, and Qaiser M. Khan. "Inoculation method affects colonization and activity of Burkholderia phytofirmans PsJN during phytoremediation of diesel-contaminated soil." International Biodeterioration & Biodegradation 85 (November 2013): 331–36. http://dx.doi.org/10.1016/j.ibiod.2013.08.022.

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Park, Jae Min, and George Lazarovits. "Involvement of hexokinase1 in plant growth promotion as mediated byBurkholderia phytofirmans." Canadian Journal of Microbiology 60, no. 6 (June 2014): 343–54. http://dx.doi.org/10.1139/cjm-2014-0053.

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Potato plantlets inoculated with strain PsJN of the bacterium Burkholderia phytofirmans exhibit consistent and significant increases in plant growth under in vitro conditions, when compared with uninoculated plants. The greatest influence on the degree and type of growth enhancement that develops has been shown to be mediated by the sugar concentration in the agar media. Bacterial growth promotion has been suggested in other studies to be regulated by the sugar sensor enzyme hexokinase1, the role of which is activation of glucose phosphorylation. In this present study, we examined the co-relationship between root and stem development in potato plants treated with PsJN and the activity of hexokinase1. Plants grown in the presence of 1.5% and 3% sucrose showed increased levels of hexokinase1 activity only in the roots of inoculated plants, suggesting that the increased enzyme levels may be associated with root growth. Analysis for mRNA using reverse transcriptase did not reveal any significant differences in transcription levels of the gene between inoculated and uninoculated plants. When PsJN-inoculated plants were grown in 1.5% and 3% concentrations of glucose and fructose, stem height and mass, leaf number, root mass, and overall biomass increased. No growth promotion occurred when PsJN-inoculated plants were grown in 3% maltose. Subsequently, a hexokinase1 activity assay showed that PsJN-induced growth of potato plants was found to only occur when plants were grown in the presence of sugars that are recognized by the plant hexokinase1. The results suggest that PsJN may enhance sugar uptake in plants by direct or indirect stimulation of hexokinase1 activity in roots and this results in enhanced overall plant growth.
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Da, Kedong, Jerzy Nowak, and Barry Flinn. "Potato cytosine methylation and gene expression changes induced by a beneficial bacterial endophyte, Burkholderia phytofirmans strain PsJN." Plant Physiology and Biochemistry 50 (January 2012): 24–34. http://dx.doi.org/10.1016/j.plaphy.2011.09.013.

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Poupin, María Josefina, Tania Timmermann, Andrea Vega, Ana Zuñiga, and Bernardo González. "Effects of the Plant Growth-Promoting Bacterium Burkholderia phytofirmans PsJN throughout the Life Cycle of Arabidopsis thaliana." PLoS ONE 8, no. 7 (July 15, 2013): e69435. http://dx.doi.org/10.1371/journal.pone.0069435.

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Kim, Seonhwa, Scott Lowman, Guichuan Hou, Jerzy Nowak, Barry Flinn, and Chuansheng Mei. "Growth promotion and colonization of switchgrass (Panicum virgatum) cv. Alamo by bacterial endophyte Burkholderia phytofirmans strain PsJN." Biotechnology for Biofuels 5, no. 1 (2012): 37. http://dx.doi.org/10.1186/1754-6834-5-37.

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Compant, Stéphane, Hervé Kaplan, Angela Sessitsch, Jerzy Nowak, Essaïd Ait Barka, and Christophe Clément. "Endophytic colonization of Vitis vinifera L. by Burkholderia phytofirmans strain PsJN: from the rhizosphere to inflorescence tissues." FEMS Microbiology Ecology 63, no. 1 (January 2008): 84–93. http://dx.doi.org/10.1111/j.1574-6941.2007.00410.x.

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Naveed, Muhammad, Birgit Mitter, Thomas G. Reichenauer, Krzysztof Wieczorek, and Angela Sessitsch. "Increased drought stress resilience of maize through endophytic colonization by Burkholderia phytofirmans PsJN and Enterobacter sp. FD17." Environmental and Experimental Botany 97 (January 2014): 30–39. http://dx.doi.org/10.1016/j.envexpbot.2013.09.014.

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Lowman, J. Scott, Alejandra Lava-Chavez, Seonhwa Kim-Dura, Barry Flinn, Jerzy Nowak, and Chuansheng Mei. "Switchgrass Field Performance on Two Soils as Affected by Bacterization of Seedlings with Burkholderia phytofirmans Strain PsJN." BioEnergy Research 8, no. 1 (September 20, 2014): 440–49. http://dx.doi.org/10.1007/s12155-014-9536-3.

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Fernandez, Olivier, Lies Vandesteene, Regina Feil, Fabienne Baillieul, John Edward Lunn, and Christophe Clément. "Trehalose metabolism is activated upon chilling in grapevine and might participate in Burkholderia phytofirmans induced chilling tolerance." Planta 236, no. 2 (February 25, 2012): 355–69. http://dx.doi.org/10.1007/s00425-012-1611-4.

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Kurepin, Leonid V., Jae Min Park, George Lazarovits, and Mark A. Bernards. "Burkholderia phytofirmans-induced shoot and root growth promotion is associated with endogenous changes in plant growth hormone levels." Plant Growth Regulation 75, no. 1 (June 6, 2014): 199–207. http://dx.doi.org/10.1007/s10725-014-9944-6.

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Magadlela, Anathi, Waafeka Vardien, Aleysia Kleinert, Léanne L. Dreyer, and Alexander J. Valentine. "The role of phosphorus deficiency in nodule microbial composition, and carbon and nitrogen nutrition of a native legume tree in the Cape fynbos ecosystem." Australian Journal of Botany 63, no. 5 (2015): 379. http://dx.doi.org/10.1071/bt14216.

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In phosphorus (P)-poor ecosystems, microbial communities can play a major role in the nitrogen (N) mineral nutrition during N2 fixation in legumes. This study investigated the role of P nutrition on the composition of N2-fixing bacterial community in Virgilia divaricata root nodules, grown under glasshouse conditions. V. divaricata seeds were germinated in Fynbos soil as a natural inoculum, and, thereafter, transferred into sterile quartz-sand cultures and supplied with 500 µM P and 5 µM P, respectively. The N2-fixing bacterial communities in the rhizosphere and root nodules were examined on the basis of the polymerase chain reaction–denaturing gradient gel electrophoresis (PCR–DGGE) banding patterns of 16S rDNA and sequencing methods. The GenBank blast results showed that V. divaricata was nodulated by a wide range of root-nodule bacterial strains also found in the rhizosphere. These included Burkholderia phytofirmans, Burkholderia sp. and Bradyrhizobium sp., during both high and low P supply. The 15N natural-abundance data also confirmed that 40–50% of the N nutrition was from symbiotic N2 fixation. This is not only evidence of nodulation, but an indication of the adaptation of a range of N2-fixing bacterial strain species to the nutrient-poor, sandy, acidic soil of the Mediterranean-type ecosystems of the fynbos vegetation in the Cape Floristic Region (CFR). Legume species V. divaricata is highly adapted to the low-nutrient soils of its native range by its association with the symbiotic N2-fixing bacteria.
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Akhtar, Saqib Saleem, Mathias Neumann Andersen, Muhammad Naveed, Zahir Ahmad Zahir, and Fulai Liu. "Interactive effect of biochar and plant growth-promoting bacterial endophytes on ameliorating salinity stress in maize." Functional Plant Biology 42, no. 8 (2015): 770. http://dx.doi.org/10.1071/fp15054.

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The objective of this work was to study the interactive effect of biochar and plant growth-promoting endophytic bacteria containing 1-aminocyclopropane-1-carboxylate deaminase and exopolysaccharide activity on mitigating salinity stress in maize (Zea mays L.). The plants were grown in a greenhouse under controlled conditions, and were subjected to separate or combined treatments of biochar (0% and 5%, w/w) and two endophytic bacterial strains (Burkholderia phytofirmans (PsJN) and Enterobacter sp. (FD17)) and salinity stress. The results indicated that salinity significantly decreased the growth of maize, whereas both biochar and inoculation mitigated the negative effects of salinity on maize performance either by decreasing the xylem Na+ concentration ([Na+]xylem) uptake or by maintaining nutrient balance within the plant, especially when the two treatments were applied in combination. Moreover, in biochar-amended saline soil, strain FD17 performed significantly better than did PsJN in reducing [Na+]xylem. Our results suggested that inoculation of plants with endophytic baterial strains along with biochar amendment could be an effective approach for sustaining crop production in salt-affected soils.
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Su, Fan, Sandra Villaume, Fanja Rabenoelina, Jérôme Crouzet, Christophe Clément, Nathalie Vaillant-Gaveau, and Sandrine Dhondt-Cordelier. "Different Arabidopsis thaliana photosynthetic and defense responses to hemibiotrophic pathogen induced by local or distal inoculation of Burkholderia phytofirmans." Photosynthesis Research 134, no. 2 (August 24, 2017): 201–14. http://dx.doi.org/10.1007/s11120-017-0435-2.

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Cheng, Liang, Ning Zhang, and Bingru Huang. "Effects of 1-aminocyclopropane-1-carboxylate-deaminase–Producing Bacteria on Perennial Ryegrass Growth and Physiological Responses to Salinity Stress." Journal of the American Society for Horticultural Science 141, no. 3 (May 2016): 233–41. http://dx.doi.org/10.21273/jashs.141.3.233.

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The accumulation of 1-aminocyclopropane-1-carboxylate (ACC), which is a precursor for ethylene production, in plant roots exposed to salinity stress can be detrimental to plant growth. The objectives of this study were to determine whether inoculating roots with bacteria containing deaminase enzymes that break down ACC (ACC-deaminase) could improve plant tolerance to salinity in perennial ryegrass (Lolium perenne) and to examine growth and physiological factors, as well as nutrition status of plants affected by the ACC-deaminase bacteria inoculation under salinity stress. Plants of perennial ryegrass (cv. Pangea) were inoculated with either Burkholderia phytofirmans PsJN or Burkholderia gladioli RU1 and irrigated with either fresh water (control) or a 250 mm NaCl solution to induce salinity stress. The bacterium-inoculated plants had less ACC content in shoots and roots under both nonstressed and salinity conditions. Salinity stress inhibited root and shoot growth, but the bacterium-inoculated plants exhibited higher visual turf quality (TQ), tiller number, root biomass, shoot biomass, leaf water content, and photochemical efficiency, as well as lower cellular electrolyte leakage (EL) under salinity stress. Plants inoculated with bacteria had lower sodium content and higher potassium to sodium ratios in shoots under salinity stress. Shoot and root nitrogen content and shoot potassium content increased, whereas shoot and root calcium, magnesium, iron, and aluminum content all decreased due to bacterial inoculation under salinity treatment. ACC-deaminase bacteria inoculation of roots was effective in improving salinity tolerance of perennial ryegrass and could be incorporated into turfgrass maintenance programs in salt-affected soils.
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Touceda-González, María, Günter Brader, Livio Antonielli, Vivek Balakrishnan Ravindran, Georg Waldner, Wolfgang Friesl-Hanl, Erika Corretto, Andrea Campisano, Michael Pancher, and Angela Sessitsch. "Combined amendment of immobilizers and the plant growth-promoting strain Burkholderia phytofirmans PsJN favours plant growth and reduces heavy metal uptake." Soil Biology and Biochemistry 91 (December 2015): 140–50. http://dx.doi.org/10.1016/j.soilbio.2015.08.038.

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Naveed, Muhammad, M. Amjad Qureshi, Zahir A. Zahir, M. Baqir Hussain, Angela Sessitsch, and Birgit Mitter. "L-Tryptophan-dependent biosynthesis of indole-3-acetic acid (IAA) improves plant growth and colonization of maize by Burkholderia phytofirmans PsJN." Annals of Microbiology 65, no. 3 (November 6, 2014): 1381–89. http://dx.doi.org/10.1007/s13213-014-0976-y.

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Naveed, Muhammad, Natasha Ramzan, Adnan Mustafa, Abdul Samad, Bushra Niamat, Muhammad Yaseen, Zulfiqar Ahmad, et al. "Alleviation of Salinity Induced Oxidative Stress in Chenopodium quinoa by Fe Biofortification and Biochar—Endophyte Interaction." Agronomy 10, no. 2 (January 24, 2020): 168. http://dx.doi.org/10.3390/agronomy10020168.

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Iron-biofortification is a sustainable food-based approach to combat iron deficiency by increasing iron content and bioavailability in agronomic crops. Siderophore producing microbes offer a sustainable and low-cost way to increase iron supply in crops. Also, certain substances released from organic amendments act as iron-chelators which increase the solubility as well as the availability of iron to plants. Present study investigated the role of siderophore-producing endophytic bacteria and biochar on iron-fortification of a novel crop quinoa in iron-limited saline conditions. The surface-disinfected seeds of quinoa were inoculated with Burkholderia phytofirmans PsJN (CFU = 109) and sown in saline soil (EC 20 dS m−1) amended with biochar (1% w/w). Results revealed that biochar and PsJN particularly when applied together significantly enhanced plant growth, grain yield, and grain nutrient contents of quinoa. Strikingly, iron concentration in quinoa grains was increased up to 71% by the combined application of biochar and PsJN. Moreover, plant physiological parameters were also improved significantly by the integrated application. However, enzymatic/non-enzymatic antioxidants activities were decreased by integrated treatment thus ameliorated salinity stress. Our study suggests that integrated application of siderophore-producing bacteria and biochar could be a promising, sustainable and cost-effective strategy which is easily integratable into the existing farming practices to achieve food fortification with micronutrients in developing countries.
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Nafees, Muhammad, Shafaqat Ali, Muhammad Naveed, and Muhammad Rizwan. "Efficiency of biogas slurry and Burkholderia phytofirmans PsJN to improve growth, physiology, and antioxidant activity of Brassica napus L. in chromium-contaminated soil." Environmental Science and Pollution Research 25, no. 7 (December 16, 2017): 6387–97. http://dx.doi.org/10.1007/s11356-017-0924-z.

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Wu, Zhe-Ming, Ren-Chao Zheng, Xiao-Ling Tang, and Yu-Guo Zheng. "Identification and characterization of a thermostable and cobalt-dependent amidase from Burkholderia phytofirmans ZJB-15079 for efficient synthesis of (R)-3,3,3-trifluoro-2-hydroxy-2-methylpropionic acid." Applied Microbiology and Biotechnology 101, no. 5 (November 10, 2016): 1953–64. http://dx.doi.org/10.1007/s00253-016-7921-x.

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Naveed, Muhammad, Adnan Mustafa, Syeda Qura-Tul-Ain Azhar, Muhammad Kamran, Zahir Ahmad Zahir, and Avelino Núñez-Delgado. "Burkholderia phytofirmans PsJN and tree twigs derived biochar together retrieved Pb-induced growth, physiological and biochemical disturbances by minimizing its uptake and translocation in mung bean (Vigna radiata L.)." Journal of Environmental Management 257 (March 2020): 109974. http://dx.doi.org/10.1016/j.jenvman.2019.109974.

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Bordiec, S., S. Paquis, H. Lacroix, S. Dhondt, E. Ait Barka, S. Kauffmann, P. Jeandet, et al. "Comparative analysis of defence responses induced by the endophytic plant growth-promoting rhizobacterium Burkholderia phytofirmans strain PsJN and the non-host bacterium Pseudomonas syringae pv. pisi in grapevine cell suspensions." Journal of Experimental Botany 62, no. 2 (September 29, 2010): 595–603. http://dx.doi.org/10.1093/jxb/erq291.

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Rondeau, Marine, Qassim Esmaeel, Jérôme Crouzet, Pauline Blin, Isabelle Gosselin, Catherine Sarazin, Miguel Pernes, et al. "Biofilm-Constructing Variants of Paraburkholderia phytofirmans PsJN Outcompete the Wild-Type Form in Free-Living and Static Conditions but Not In Planta." Applied and Environmental Microbiology 85, no. 11 (March 22, 2019). http://dx.doi.org/10.1128/aem.02670-18.

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ABSTRACT Members of the genus Burkholderia colonize diverse ecological niches. Among the plant-associated strains, Paraburkholderia phytofirmans PsJN is an endophyte with a broad host range. In a spatially structured environment (unshaken broth cultures), biofilm-constructing specialists of P. phytofirmans PsJN colonizing the air-liquid interface arose at high frequency. In addition to forming a robust biofilm in vitro and in planta on Arabidopsis roots, those mucoid phenotypic variants display a reduced swimming ability and modulate the expression of several microbe-associated molecular patterns (MAMPs), including exopolysaccharides (EPS), flagellin, and GroEL. Interestingly, the variants induce low PR1 and PDF1.2 expression compared to that of the parental strain, suggesting a possible evasion of plant host immunity. We further demonstrated that switching from the planktonic to the sessile form did not involve quorum-sensing genes but arose from spontaneous mutations in two genes belonging to an iron-sulfur cluster: hscA (encoding a cochaperone protein) and iscS (encoding a cysteine desulfurase). A mutational approach validated the implication of these two genes in the appearance of variants. We showed for the first time that in a heterogeneous environment, P. phytofirmans strain PsJN is able to rapidly diversify and coexpress a variant that outcompete the wild-type form in free-living and static conditions but not in planta. IMPORTANCE Paraburkholderia phytofirmans strain PsJN is a well-studied plant-associated bacterium known to induce resistance against biotic and abiotic stresses. In this work, we described the spontaneous appearance of mucoid variants in PsJN from static cultures. We showed that the conversion from the wild-type (WT) form to variants (V) correlates with an overproduction of EPS, an enhanced ability to form biofilm in vitro and in planta, and a reduced swimming motility. Our results revealed also that these phenotypes are in part associated with spontaneous mutations in an iron-sulfur cluster. Overall, the data provided here allow a better understanding of the adaptive mechanisms likely developed by P. phytofirmans PsJN in a heterogeneous environment.
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Su, Fan, Cédric Jacquard, Sandra Villaume, Jean Michel, Fanja Rabenoelina, Christophe Clément, Essaid A. Barka, Sandrine Dhondt-Cordelier, and Nathalie Vaillant-Gaveau. "Burkholderia phytofirmans PsJN reduces impact of freezing temperatures on photosynthesis in Arabidopsis thaliana." Frontiers in Plant Science 6 (October 2, 2015). http://dx.doi.org/10.3389/fpls.2015.00810.

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Sheibani-Tezerji, Raheleh, Thomas Rattei, Angela Sessitsch, Friederike Trognitz, and Birgit Mitter. "Transcriptome Profiling of the Endophyte Burkholderia phytofirmans PsJN Indicates Sensing of the Plant Environment and Drought Stress." mBio 6, no. 5 (September 8, 2015). http://dx.doi.org/10.1128/mbio.00621-15.

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ABSTRACT It is widely accepted that bacterial endophytes actively colonize plants, interact with their host, and frequently show beneficial effects on plant growth and health. However, the mechanisms of plant-endophyte communication and bacterial adaption to the plant environment are still poorly understood. Here, whole-transcriptome sequencing of B. phytofirmans PsJN colonizing potato (Solanum tuberosum L.) plants was used to analyze in planta gene activity and the response of strain PsJN to plant stress. The transcriptome of PsJN colonizing in vitro potato plants showed a broad array of functionalities encoded in the genome of strain PsJN. Transcripts upregulated in response to plant drought stress were mainly involved in transcriptional regulation, cellular homeostasis, and the detoxification of reactive oxygen species, indicating an oxidative stress response in PsJN. Genes with modulated expression included genes for extracytoplasmatic function (ECF) group IV sigma factors. These cell surface signaling elements allow bacteria to sense changing environmental conditions and to adjust their metabolism accordingly. TaqMan quantitative PCR (TaqMan-qPCR) was performed to identify ECF sigma factors in PsJN that were activated in response to plant stress. Six ECF sigma factor genes were expressed in PsJN colonizing potato plants. The expression of one ECF sigma factor was upregulated whereas that of another one was downregulated in a plant genotype-specific manner when the plants were stressed. Collectively, our study results indicate that endophytic B. phytofirmans PsJN cells are active inside plants. Moreover, the activity of strain PsJN is affected by plant drought stress; it senses plant stress signals and adjusts its gene expression accordingly. IMPORTANCE In recent years, plant growth-promoting endophytes have received steadily growing interest as an inexpensive alternative to resource-consuming agrochemicals in sustainable agriculture. Even though promising effects are recurrently observed under controlled conditions, these are rarely reproducible in the field or show undesirably strong variations. Obviously, a better understanding of endophyte activities in plants and the influence of plant physiology on these activities is needed to develop more-successful application strategies. So far, research has focused mainly on analyzing the plant response to bacterial inoculants. This prompted us to study the gene expression of the endophyte Burkholderia phytofirmans PsJN in potato plants. We found that endophytic PsJN cells express a wide array of genes and pathways, pointing to high metabolic activity inside plants. Moreover, the strain senses changes in the plant physiology due to plant stress and adjusts its gene expression pattern to cope with and adapt to the altered conditions.
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Kost, Thomas, Nejc Stopnisek, Kirsty Agnoli, Leo Eberl, and Laure Weisskopf. "Oxalotrophy, a widespread trait of plant-associated Burkholderia species, is involved in successful root colonization of lupin and maize by Burkholderia phytofirmans." Frontiers in Microbiology 4 (2014). http://dx.doi.org/10.3389/fmicb.2013.00421.

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Su, Fan, Françoise Gilard, Florence Guérard, Sylvie Citerne, Christophe Clément, Nathalie Vaillant-Gaveau, and Sandrine Dhondt-Cordelier. "Spatio-temporal Responses of Arabidopsis Leaves in Photosynthetic Performance and Metabolite Contents to Burkholderia phytofirmans PsJN." Frontiers in Plant Science 7 (March 30, 2016). http://dx.doi.org/10.3389/fpls.2016.00403.

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Pinedo, Ignacio, Thomas Ledger, Macarena Greve, and María J. Poupin. "Burkholderia phytofirmans PsJN induces long-term metabolic and transcriptional changes involved in Arabidopsis thaliana salt tolerance." Frontiers in Plant Science 6 (June 23, 2015). http://dx.doi.org/10.3389/fpls.2015.00466.

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Silipo, Alba, Teresa Ierano, Rosa Lanzetta, Antonio Molinaro, and Michelangelo Parrilli. "ChemInform Abstract: The Structure of the O-Chain Polysaccharide from the Gram-Negative Endophytic Bacterium Burkholderia phytofirmans Strain PsJN." ChemInform 39, no. 32 (August 5, 2008). http://dx.doi.org/10.1002/chin.200832193.

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Poupin, María J., Macarena Greve, Vicente Carmona, and Ignacio Pinedo. "A Complex Molecular Interplay of Auxin and Ethylene Signaling Pathways Is Involved in Arabidopsis Growth Promotion by Burkholderia phytofirmans PsJN." Frontiers in Plant Science 7 (April 12, 2016). http://dx.doi.org/10.3389/fpls.2016.00492.

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Miotto-Vilanova, Lidiane, Cédric Jacquard, Barbara Courteaux, Laurence Wortham, Jean Michel, Christophe Clément, Essaïd A. Barka, and Lisa Sanchez. "Burkholderia phytofirmans PsJN Confers Grapevine Resistance against Botrytis cinerea via a Direct Antimicrobial Effect Combined with a Better Resource Mobilization." Frontiers in Plant Science 7 (August 23, 2016). http://dx.doi.org/10.3389/fpls.2016.01236.

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Mitter, Birgit, Alexandra Petric, Maria W. Shin, Patrick S. G. Chain, Lena Hauberg-Lotte, Barbara Reinhold-Hurek, Jerzy Nowak, and Angela Sessitsch. "Comparative genome analysis of Burkholderia phytofirmans PsJN reveals a wide spectrum of endophytic lifestyles based on interaction strategies with host plants." Frontiers in Plant Science 4 (2013). http://dx.doi.org/10.3389/fpls.2013.00120.

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