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Journal articles on the topic 'Rhizobia isolates'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

Kaziūnienė, Justina, Francesco Pini, Arman Shamshitov, et al. "Genetic Characterization of Rhizobium spp. Strains in an Organic Field Pea (Pisum sativum L.) Field in Lithuania." Plants 13, no. 14 (2024): 1888. http://dx.doi.org/10.3390/plants13141888.

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Biological nitrogen fixation in legume plants depends on the diversity of rhizobia present in the soil. Rhizobial strains exhibit specificity towards host plants and vary in their capacity to fix nitrogen. The increasing interest in rhizobia diversity has prompted studies of their phylogenetic relations. Molecular identification of Rhizobium is quite complex, requiring multiple gene markers to be analysed to distinguish strains at the species level or to predict their host plant. In this research, 50 rhizobia isolates were obtained from the root nodules of five different Pisum sativum L. genot

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E. Suleiman, Abdel Moneim. "Molecular Biodiversity of Rhizobia Isolated from Root Nodules of Some Economical Important Legumes in Gadarif State – Sudan." Bioscience Biotechnology Research Communications 17, no. 1 (2024): 01–08. http://dx.doi.org/10.21786/bbrc/17.1.1.

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Although Gadarif State is an important agricultural area in Sudan, studies must be conducted on rhizobia’s genetic or molecular diversity associated with economically important legumes. Therefore, this study was undertaken to isolate rhizobia related to groundnut (Arachis hypogea), Bambara groundnut (Vigna subterranean), and Cowpea (Vigna unguiculata) in different localities in Gadarif State and study their phylogenetic relationships to make the genetic information of the indigenous rhizobia available and establish a molecular database for monitoring future climate change impact on their diver

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3

Mekonnen, Mulugeta, and Ameha Kebede. "Isolation and Assessment of the Symbiotic Efficiency of Faba bean (Vicia faba L.) Nodulating Rhizobial Isolates from Eastern Hararghe Highlands of Ethiopia." Current Agriculture Research Journal 9, no. 2 (2021): 91–105. http://dx.doi.org/10.12944/carj.9.2.04.

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This particular work was devoted to isolate and assess the symbiotic efficiency of faba bean (Vicia faba L.)-nodulating rhizobia isolate at few faba bean growing areas of the eastern Hararghe highlands of Ethiopia. Overall 50 rhizobia isolates were obtained from soil samples of three Woredas (districts) of the eastern Hararghe highlands using the host trap method. Out of these 50 isolates, 40 were presumptively identified as rhizobia. Among these 40 rhizobia isolates, only 31 were successful to nodulate faba bean, and authenticated as true faba bean nodulating rhizobia. Concerning the symbioti

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Pervin, Safirun, Bushra Jannat, and Sohana Al Sanjee. "Characterization of Rhizobia from Root Nodule and Rhizosphere of Lablab purpureus and Vigna sinensis in Bangladesh." Turkish Journal of Agriculture - Food Science and Technology 5, no. 1 (2017): 14. http://dx.doi.org/10.24925/turjaf.v5i1.14-17.743.

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Nitrogen fixation resulting from mutual symbiosis of rhizobia and cultivated legume plants is therefore critical to food security as it directly affects agricultural production. Biological Nitrogen Fixation (BNF) can be an important factor in sustainable agriculture.The isolation and identification of different slow growing and fast growing rhizobial strains from the nodules of two leguminous plant species. Symbiotic nitrogen fixing Rhizobium spp. was isolated from (Lablab purpureus and Vigna sinensis). Nodules samples were collected from plants growing in different Districts of Bangladesh and

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Mekonnen, Mulugeta, and Ameha Kebede. "Enrichment of Restraint to Endmost Salinity and Outmost pH Circumstance in Common Bean (Phaseolus vulgaris L.) Nodulating Rhizobial Isolates from Eastern Hararghe Lowlands around Babile, Eastern Ethiopia, through Mutagenesis." Current Agriculture Research Journal 9, no. 2 (2021): 130–44. http://dx.doi.org/10.12944/carj.9.2.07.

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This study was committed to examining the symbiotic efficacy difference between wild and mutant rhizobial isolates from lowlands of eastern Ethiopia around Babile, and at the same time to appreciate the enrichment effect of mutagenesis on restraint of common bean (Phaseolus vulgaris L.) nodulating rhizobia to Endmost Salinity and Outmost pH Circumstance. A total of 50 wild rhizobia isolate, and 8 mutant isolates; after mutagenesis were selected based on their ability to endure endmost salt and outmost pH circumstances at laboratory condition. All of the mutants were found to be symbiotically e

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Denton, M. D., D. R. Coventry, P. J. Murphy, J. G. Howieson, and W. D. Bellotti. "Competition between inoculant and naturalised Rhizobium leguminosarum bv. trifolii for nodulation of annual clovers in alkaline soils." Australian Journal of Agricultural Research 53, no. 9 (2002): 1019. http://dx.doi.org/10.1071/ar01138.

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Inoculant rhizobia typically need to compete with naturalised soil populations of rhizobia to form legume nodules. We have used the polymerase chain reaction to test the ability of seed-inoculated rhizobia to compete with naturalised populations of rhizobia and form nodules on clover (Trifolium alexandrinum, T.�purpureum, and T. resupinatum) in alkaline soil. Clover rhizobia, Rhizobium leguminosarum bv. trifolii, were identified at the strain level using either a nif-specific RP01 primer or ERIC primers. Analysis of rhizobia isolated from nodules indicated that strain TA1 competed poorly for n

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Turito, Andualem, Israel Turito, Nigatu Nemomsa, and Adugna Belew. "Isolation, Characterization and Evaluation of Symbiotic Effectiveness of Rhizobia Nodulating (Phaseolus Vulgaris L) Nodules Collected from Gurafarda, Southwest Ethiopia." International Journal of Microbiology and Biotechnology 10, no. 2 (2025): 39–53. https://doi.org/10.11648/j.ijmb.20251002.12.

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Rhizobia are diazotrophic bacteria that fix nitrogen after becoming established inside the root nodules of legumes (&lt;i&gt;Fabaceae&lt;/i&gt;). This study was conducted to isolate, characterize and evaluate the symbiotic effectiveness of rhizobia nodulating common bean. Nodule sample were collected from six randomly selected kebele of the study area for nodule induction under controlled condition. At the flowering stage after 45 days of plant growth, root nodules were collected and rhizobia bacteria isolated. The isolates were allowed for different biochemical and physiologic

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8

Batra, Priyanka, Monika Barkodia, Umang Ahlawat, Rekha Sansanwal, Rajesh Kumar Vaid, and Leela Wati. "Identification and characterization of promising endophytic bacteria for growth promotion in chickpea (Cicer arietinum)." Indian Journal of Agricultural Sciences 90, no. 4 (2020): 708–12. http://dx.doi.org/10.56093/ijas.v90i4.102207.

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The present study was carried out for the isolation and characterization of endophytic bacteria from chickpea nodules. A total of 107 endophytes were isolated from five districts of Haryana using three media, viz. YEMA for rhizobia, Pikovskaya and TSA for non-rhizobial isolates. The endophytes were then screened for various growth promoting traits like IAA production, Phosphate solubilization, Siderophore production, ACC utilization, Potassium solubilization and tolerance to NaCl concentrations. Total six endophytes, one rhizobium (HM2) and five non-rhizobial endophytes (RE6, BE13, ME3, HE5, H

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Wanore, Denebo Sebaro, Mekonin Antuye Bachore, Essayas Kebede Eromo, Rehima Kebato Nure, Gezahegn Batebo Bidiko, and Shambel Selman Abdo. "Isolation and Characterization of Nitrogen Fixing Bacteria from Rhizospher of Chickpea and Peanodules, Hossana, Ethiopia." UTTAR PRADESH JOURNAL OF ZOOLOGY 44, no. 15 (2023): 97–107. http://dx.doi.org/10.56557/upjoz/2023/v44i153574.

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One of the ways to increase the competitive survivability of rhizobial bio fertilizers and achieve better plant growth under such conditions is by modifying the rhizospheric environment or community by addition of non rhizobial nodule-associated bacteria (NAB) that cause better nodulation and plant growth when co-inoculated with rhizobia. To achieve this objective experimental design was carried out. Rhizobium is the root of legumes host nitrogen fixing bacteria which can invade root and get sugars from the plant. A study was performed to investigate the most commonly associated nodule-associa

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10

Mekonnen, Asrat, and Anbessie Debebe. "Isolation and Biochemical Characterization of Rhizobium Strains from Fababean (Vicia faba L) Nodule from Arsi Zone of Ethiopia." Scholars Journal of Agriculture and Veterinary Sciences 8, no. 9 (2021): 82–86. http://dx.doi.org/10.36347/sjavs.2021.v08i09.001.

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Nitrogen (N) deficiency is one of the most common factors for reduction in yield of legume crops particularly in Ethiopia. The utilization of biological nitrogen fixation (BNF) by legume-Rhizobium symbiosis is most prominent symbiosis found in nature; so for increasing legume production and soil fertility we should use organic fertilizer such as bio fertilizer. The aim of this study was to isolate, identify and characterize the fababean nodulating Rhizobium isolates. Fababean (Vicia faba L.) rhizobia were isolated from nodules collected from four fababean growing area of Arsi zone of Ethiopia.

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Collins, M. T., J. E. Thies, and L. K. Abbott. "Diversity and symbiotic effectiveness of Rhizobium leguminosarum bv. trifolii isolates from pasture soils in south-western Australia." Soil Research 40, no. 8 (2002): 1319. http://dx.doi.org/10.1071/sr01052.

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The abundance of the Australian inoculant strain of Rhizobium leguminosarum bv. trifolii for subterraneum clover (WU95) and the diversity of naturalised rhizobia were assessed in 3 subterranean clover pastures in the Albany region of south-western Western Australia. Most probable number, enzyme linked immunosorbent assay (ELISA), and polymerase chain reaction (PCR) techniques were used. A putative strain similar to inoculant strain WU96 was uncommon at one site (South Stirling) and not isolated at 2 other sites. Randomly amplified polymorphic DNA (RAPD) PCR fingerprinting using the RPO1 primer

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Amit, Yadav, Solanki Divya, Sharma Ghanshyam, Gunjan Dubey Dr., and Indu Singh Sankhla Dr. "Phenotypic and Biochemical Characterization of Rhizobia Associated with Medicago polymorpha Growing in Rajasthan." Indian Journal of Advanced Botany (IJAB) 2, no. 2 (2022): 5–11. https://doi.org/10.54105/ijab.B2012.102222.

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<strong>Abstract:</strong> In present study, a total of 15 rhizobial isolates were isolated from the root nodules of Medicago polymorpha growing in Jaipur and were characterized for their phenotypic, biochemical and plant growth promoting activities. The root nodules of M. polymorpha were elongated, branched and indeterminate. All isolated rhizobia were highly diverse in their physiological traits. Based on colony morphology, all isolates were categorized into six groups. Major group containing 6 isolates (MP1, MP3, MP9, MP10, MP11 and MP13) showed white, opaque, raised, smooth edges, non-gumm

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13

Kapembwa, Rachael, Alice M. Mweetwa, Munsanda Ngulube, Jones Yengwe, and Jones Yengwe. "Morphological and Biochemical Characterization of Soybean Nodulating Rhizobia Indigenous to Zambia." Sustainable Agriculture Research 5, no. 3 (2016): 84. http://dx.doi.org/10.5539/sar.v5n3p84.

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<p>Soybean [<em>Glycine max</em> (L.) Merrill] is known for nitrogen fixation by rhizobia present in the soil with which it establishes an efficient symbiosis. In Zambia, current rhizobial inoculants used in soybeans production are based on non-indigenous strains; this creates a need to isolate local strains that can be used for the development of local inoculants for soybeans in Zambian soils. This paper reports the isolation and characterization of rhizobial isolates from virgin and cultivated soils of the three agro-ecological regions of Zambia. Rhizobia were isolated usin

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Habibi, Safiullah, Michiko Yasuda, Shafiqullah Aryan, Tadashi Yokoyama, Kalimullah Saighani, and Naoko Ohkama-Ohtsu. "Insights into Genetic and Physiological Characteristics of Clover Rhizobia in Afghanistan Soils." Applied Microbiology 4, no. 1 (2024): 112–23. http://dx.doi.org/10.3390/applmicrobiol4010008.

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Livestock production in Afghanistan highly relies on grazing and clover feed, which is a key component of pastures and forage crops. This study elucidated the genetic diversity of clover-nodulating rhizobia in different ecological regions and their effects on clover growth. A total of 57 rhizobia were isolated and their genetic diversities were studied through 16S rRNA and nifD genes. The isolates were inoculated to clover (Afghan local variety), to investigate the potential of nitrogen fixation and influences of clover growth. The 16S rRNA gene analysis showed two distinct groups of Rhizobium

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15

Zhang, Junjie, Jingqi Wang, Yufeng Feng, Brigitte Brunel, and Xuxiao Zong. "Unearthing Optimal Symbiotic Rhizobia Partners from the Main Production Area of Phaseolus vulgaris in Yunnan." International Journal of Molecular Sciences 25, no. 15 (2024): 8511. http://dx.doi.org/10.3390/ijms25158511.

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Phaseolus vulgaris is a globally important legume cash crop, which can carry out symbiotic nitrogen fixation with rhizobia. The presence of suitable rhizobia in cultivating soils is crucial for legume cropping, especially in areas beyond the plant-host native range, where soils may lack efficient symbiotic partners. We analyzed the distribution patterns and traits of native rhizobia associated with P. vulgaris in soils of Yunnan, where the common bean experienced a recent expansion. A total of 608 rhizobial isolates were tracked from soils of fifteen sampling sites using two local varieties of

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16

Menelih, Asmamaw, Faris Hailu, and Mussa Adal. "Plant Growth Promoting and Abiotic Stress Tolerant Chickpea (Cicer arietinum L.) Rhizobial Isolates from Some Areas of South Wollo Zone, Ethiopia." Advances in Agriculture 2022 (September 8, 2022): 1–10. http://dx.doi.org/10.1155/2022/6381143.

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Chickpea (Cicer arietinum L) is an important pulse crop prized for its high protein content and is grown as a food source worldwide, including Ethiopia. However, the yield of chickpea is low due to low soil fertility and the ever-changing abiotic stresses. Therefore, this study aimed at isolation, characterization, and selection of chickpea rhizobia effective in their nitrogen fixation and abiotic stress tolerance potential. As a result, 150 nodule samples were collected from three districts of chickpea-producing areas in South Wollo. The nodules were crushed, and the rhizobia were isolated an

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17

Aguilar, O. Mario, María Verónica López, Pablo M. Riccillo, et al. "Prevalence of the Rhizobium etli-Like Allele in Genes Coding for 16S rRNA among the Indigenous Rhizobial Populations Found Associated with Wild Beans from the Southern Andes in Argentina." Applied and Environmental Microbiology 64, no. 9 (1998): 3520–24. http://dx.doi.org/10.1128/aem.64.9.3520-3524.1998.

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ABSTRACT A collection of rhizobial isolates from nodules of wild beans,Phaseolus vulgaris var. aborigineus, found growing in virgin lands in 17 geographically separate sites in northwest Argentina was characterized on the basis of host range, growth, hybridization to a nifH probe, analysis of genes coding for 16S rRNA (16S rDNA), DNA fingerprinting, and plasmid profiles. Nodules in field-collected wild bean plants were largely dominated by rhizobia carrying the 16S rDNA allele of Rhizobium etli. A similar prevalence of the R. etli allele was observed among rhizobia trapped from nearby soil. In

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Laurette, Ngo Nkot, Youagang Gougueu Harris Stephane, Semboung Lang Firmin, and Mezatio Ariane Sandra. "Rhizobium isolates nodulating common bean: A pathway to control Fusarium sp, the causative agent of damping-off of seedlings." Current Research in Agricultural Sciences 12, no. 1 (2025): 63–78. https://doi.org/10.18488/cras.v12i1.4214.

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Obtaining a high-performing inoculant requires combining diversified traits that can strongly contribute to promoting plant growth and protection. This work aims to contribute to developing biological control of Fusarium sp., the causative agent of damping-off using rhizobia. Eight rhizobial isolates from the Laboratory of Plant Biology were used. A search for some enzymes (cellulase, proteases, chitinases, and phosphatases) produced by rhizobia and involved in biological control was carried out. The rhizobia isolates were then tested for their ability to biocontrol Fusarium sp. in direct and

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Stefan, Andrei, Jannick Van Cauwenberghe, Craita Maria Rosu, et al. "Nodules of Medicago spp. Host a Diverse Community of Rhizobial Species in Natural Ecosystems." Agronomy 14, no. 9 (2024): 2156. http://dx.doi.org/10.3390/agronomy14092156.

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Biological nitrogen fixation by rhizobia-nodulated legumes reduces the dependence on synthetic nitrogen fertilizers. Identification of locally adapted rhizobia may uncover economically valuable strains for sustainable agriculture. This study investigated the diversity and symbiotic potential of rhizobia associated with three Medicago species from Eastern Romania’s ecosystems. Phenotypic screening ensured that only rhizobial species were retained for molecular characterization. 16S rDNA sequencing clustered the isolates into four distinct groups: Sinorhizobium meliloti, Sinorhizobium medicae, R

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Bait, Misbakhul, Rumella Simarmata, and Rahayu Widyastuti. "Identifikasi dan Kekerabatan Rhizobia Pohon Mangium dan Sengon Berdasarkan nodD1 dan nifH." Jurnal Ilmu Pertanian Indonesia 27, no. 4 (2022): 627–33. http://dx.doi.org/10.18343/jipi.27.4.627.

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Rhizobia from legumes Acacia mangium (Mangium) and Paraserianthes falcataria (Sengon) have often been isolated and studied for their applications to plants, but studies on the nod and nif genes are still lacking. Even though this plant were often used as a source of paper raw materials and reforestation plants. The aim of this study was to define the genetic relationship of a group of potential strains isolated from tropical legume trees in terms of 16S rRNA, nodD1, and nifH genes. This research method includes the selection of isolates based on the main character of Rhizobiales, to isolate th

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Sharma, M. P., K. Srivastava, and S. K. Sharma. "Biochemical characterization and metabolic diversity of soybean rhizobia isolated from Malwa region of Central India." Plant, Soil and Environment 56, No. 8 (2010): 375–83. http://dx.doi.org/10.17221/247/2009-pse.

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Soybean cultivation in many zones of India shows occurrence of native rhizobia besides other exotically adapted strains. In the current study, 22 rhizobial isolates (recovered from 12 different soybean growing sites) and 8 reference strains were selected for biochemical and metabolic characterization. Of 22 isolates, 18 were recovered as fast growing isolates while the rest were slow growing based on bromothymol blue (BTB) test. Unlike earlier belief that rhizobia have no ability to grow on glucose peptone agar medium, in this study, some isolates and some reference strains grew well on this m

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Khalid, Rabia, Xiao Xia Zhang, Rifat Hayat, and Mukhtar Ahmed. "Molecular Characteristics of Rhizobia Isolated from Arachis hypogaea Grown under Stress Environment." Sustainability 12, no. 15 (2020): 6259. http://dx.doi.org/10.3390/su12156259.

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The phenotypic and genotypic characterization of eight rhizobial isolates obtained from Arachis hypogaea nodules grown under stress environment was performed. Isolates were screened for their ability to tolerate different abiotic stresses (high temperature (60° C), salinity (1–5% (w/v) NaCl), and pH (1–12). The genomic analysis of 16S rRNA and housekeeping genes (atpD, recA, and glnII) demonstrated that native groundnut rhizobia from these stress soils are representatives of fast growers and phylogenetically related to Rhizobium sp. The phenotypic characterization (generation time, carbon sour

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Materon, L. A., J. D. H. Keatinge, D. P. Beck, N. Yurtsever, K. Karuc, and S. Altuntas. "The Role of Rhizobial Biodiversity in Legume Crop Productivity in the West Asian Highlands." Experimental Agriculture 31, no. 4 (1995): 485–91. http://dx.doi.org/10.1017/s0014479700026466.

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SUMMARYThe native rhizobia capable of symbiosis with annually-sown food and forage legume crops in the Turkish highlands were surveyed and estimates made of the numbers and nitrogen fixing efficiency of native Rhizobium leguminosarum with Turkish cultivars of lentil (Lens culinaris Medik.) and vetch (Vicia sativa L.). Native rhizobia were present in medium to high numbers in most samples but the nitrogen fixation efficiency of at least half of the isolates was poor. Vetch was somewhat less specific in its rhizobial compatibility than lentil, suggesting a potential for artificial inoculation to

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del Papa, María F., Laura J. Balagué, Susana Castro Sowinski, et al. "Isolation and Characterization of Alfalfa-Nodulating Rhizobia Present in Acidic Soils of Central Argentina and Uruguay." Applied and Environmental Microbiology 65, no. 4 (1999): 1420–27. http://dx.doi.org/10.1128/aem.65.4.1420-1427.1999.

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ABSTRACT We describe the isolation and characterization of alfalfa-nodulating rhizobia from acid soils of different locations in Central Argentina and Uruguay. A collection of 465 isolates was assembled, and the rhizobia were characterized for acid tolerance. Growth tests revealed the existence of 15 acid-tolerant (AT) isolates which were able to grow at pH 5.0 and formed nodules in alfalfa with a low rate of nitrogen fixation. Analysis of those isolates, including partial sequencing of the genes encoding 16S rRNA and genomic PCR-fingerprinting with MBOREP1 and BOXC1 primers, demonstrated that

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25

Weir, Bevan S., Susan J. Turner, Warwick B. Silvester, Duck-Chul Park, and John M. Young. "Unexpectedly Diverse Mesorhizobium Strains and Rhizobium leguminosarum Nodulate Native Legume Genera of New Zealand, while Introduced Legume Weeds Are Nodulated by Bradyrhizobium Species." Applied and Environmental Microbiology 70, no. 10 (2004): 5980–87. http://dx.doi.org/10.1128/aem.70.10.5980-5987.2004.

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ABSTRACT The New Zealand native legume flora are represented by four genera, Sophora, Carmichaelia, Clianthus, and Montigena. The adventive flora of New Zealand contains several legume species introduced in the 19th century and now established as serious invasive weeds. Until now, nothing has been reported on the identification of the associated rhizobia of native or introduced legumes in New Zealand. The success of the introduced species may be due, at least in part, to the nature of their rhizobial symbioses. This study set out to address this issue by identifying rhizobial strains isolated

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R, Lakshmipathy, Tejaswi T., Venugopala Rao R, and Bagyaraj D.J. "Nodulation pattern in different legumes by Rhizobia isolated from rajma." JOURNAL OF SOIL BIOLOGY AND ECOLOGY 43, no. 2 (2023): 77–81. http://dx.doi.org/10.58682/jsbe.43.2/hhaw6883.

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Rhizobium is an important symbiotic nitrogen fixing bacteria. The bacteria colonize leguminous plant cells within root nodules, where they convert atmospheric nitrogen into ammonia using the enzyme nitrogenase and then provide organic nitrogenous compounds such as glutamine or ureides to the plant. The plant, in turn, provides the bacteria with organic compounds made by photosynthesis. In this study, rhizosphere soil samples and nodules were collected from rajma plants of hilly Paderu region of Andhra Pradesh. Rhizobia were isolated from these samples using Yeast Extract Manitol Agar (YEMA) me

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Taulé, Cecilia, María Zabaleta, Cintia Mareque, et al. "New Betaproteobacterial Rhizobium Strains Able To Efficiently Nodulate Parapiptadenia rigida (Benth.) Brenan." Applied and Environmental Microbiology 78, no. 6 (2012): 1692–700. http://dx.doi.org/10.1128/aem.06215-11.

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ABSTRACTAmong the leguminous trees native to Uruguay,Parapiptadenia rigida(Angico), a Mimosoideae legume, is one of the most promising species for agroforestry. Like many other legumes, it is able to establish symbiotic associations with rhizobia and belongs to the group known as nitrogen-fixing trees, which are major components of agroforestry systems. Information about rhizobial symbionts for this genus is scarce, and thus, the aim of this work was to identify and characterize rhizobia associated withP. rigida. A collection of Angico-nodulating isolates was obtained, and 47 isolates were sel

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van Berkum, Peter, Yazid Badri, Patrick Elia, Mohammed Elarbi Aouani, and Bertrand D. Eardly. "Chromosomal and Symbiotic Relationships of Rhizobia Nodulating Medicago truncatula and M. laciniata." Applied and Environmental Microbiology 73, no. 23 (2007): 7597–604. http://dx.doi.org/10.1128/aem.01046-07.

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ABSTRACT Multilocus sequence typing (MLST) is a sequence-based method used to characterize bacterial genomes. This method was used to examine the genetic structure of Medicago-nodulating rhizobia at the Amra site, which is located in an arid region of Tunisia. Here the annual medics Medicago laciniata and M. truncatula are part of the natural flora. The goal of this study was to identify whether distinct chromosomal groups of rhizobia nodulate M. laciniata because of its restricted requirement for specific rhizobia. The MLST analysis involved determination of sequence variation in 10 chromosom

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Silva, Valéria Maria Araujo, Claudia Miranda Martins, Fernando Gouveia Cavalcante, et al. "Cross-Feeding Among Soil Bacterial Populations: Selection and Characterization of Potential Bio-inoculants." Journal of Agricultural Science 11, no. 5 (2019): 23. http://dx.doi.org/10.5539/jas.v11n5p23.

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The biological nitrogen fixation constitutes a strategy to accelerate soil reclamation and the symbiotic systems Rhizobium-legume is the major N2-fixing in which the enzyme carboxymethyl cellulase plays a key role. As many rhizobia species are cellulase negative, the association with cellulolytic bacteria can be a strategy for the recovery of degraded ecosystems. It has been hypothesized that the sharing of resources should mostly be prevalent among phylogenetically and metabolically different species. Accordingly, twenty-seven actinobacteria isolates from Actinobacteria phyla and twenty-six r

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MAPFUMO, P., S. MPEPEREKI, and P. MAFONGOYA. "PIGEONPEA RHIZOBIA PREVALENCE AND CROP RESPONSE TO INOCULATION IN ZIMBABWEAN SMALLHOLDER-MANAGED SOILS." Experimental Agriculture 36, no. 4 (2000): 423–34. http://dx.doi.org/10.1017/s0014479700001009.

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A study was conducted to determine the population sizes of indigenous pigeonpea (Cajanus cajan)-nodulating rhizobia and responses of the crop to rhizobial inoculation in soils under smallholder management. Rhizobia populations were determined in 21 soils from three different agro-ecological regions of Zimbabwe using the plant infection most-probable-number technique. Pigeonpea response to rhizobial inoculation was tested in five soils representative of low, medium and high rhizobia populations. Pigeonpea rhizobia ranged from undetectable to 121 cells per g soil compared with 16 to 159 cells pe

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Turito, Andualem, Kamel Argaw, and Dereba Workineh. "Isolation, Characterization and Evaluation of Symbiotic Effectiveness of Rhizobia Nodulating Faba Bean (<i>Vicia faba. </i>L.)." Chemical and Biomolecular Engineering 10, no. 2 (2025): 23–28. https://doi.org/10.11648/j.cbe.20251002.12.

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Natural process of fixing molecular nitrogen to ammonium is called biological nitrogen fixation. By supplying nitrogen to legume plants, it helps to support sustainable agriculture globally. The most significant leguminous crop, faba beans, can coexist symbiotically with soil bacteria called rhizobia. The purpose of this study was to isolate, describe, and assess Rhizobium nodulating faba bean&apos;s symbiotic efficacy. YEMA-CR was used to isolate a total of 24 Rhizobium isolates. Every isolate was described using YEMA based on how they responded to phenotypic traits. Every isolate tested

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Chen, Wen-Ming, Lionel Moulin, Cyril Bontemps, Peter Vandamme, Gilles Béna та Catherine Boivin-Masson. "Legume Symbiotic Nitrogen Fixation byβ-Proteobacteria Is Widespread inNature". Journal of Bacteriology 185, № 24 (2003): 7266–72. http://dx.doi.org/10.1128/jb.185.24.7266-7272.2003.

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ABSTRACT Following the initial discovery of two legume-nodulating Burkholderia strains (L. Moulin, A. Munive, B. Dreyfus, and C. Boivin-Masson, Nature 411:948-950, 2001), we identified as nitrogen-fixing legume symbionts at least 50 different strains of Burkholderia caribensis and Ralstonia taiwanensis, all belonging to the β-subclass of proteobacteria, thus extending the phylogenetic diversity of the rhizobia. R. taiwanensis was found to represent 93% of the Mimosa isolates in Taiwan, indicating thatβ -proteobacteria can be the specific symbionts of a legume. The nod genes of rhizobial β-prot

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Kawaka, Fanuel, Mathews M. Dida, Peter A. Opala, et al. "Symbiotic Efficiency of Native Rhizobia Nodulating Common Bean (Phaseolus vulgaris L.) in Soils of Western Kenya." International Scholarly Research Notices 2014 (November 11, 2014): 1–8. http://dx.doi.org/10.1155/2014/258497.

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This study was conducted to determine the abundance and symbiotic efficiency of native rhizobia nodulating common bean in Kisumu and Kakamega, Kenya. Soil sampling was carried out in three farms that had been used for growing common bean for at least two seasons and one fallow land with no known history of growing common bean or inoculation. Abundance of soil rhizobia and symbiotic efficiency (SE) were determined in a greenhouse experiment. Native rhizobia populations ranged from 3.2×101 to 3.5×104 cells per gram of soil. Pure bacterial cultures isolated from fresh and healthy root nodules exh

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Efstathiadou, Evdoxia, Dimitrios Savvas, and Anastasia Tampakaki. "Genetic diversity and phylogeny of indigenous rhizobia nodulating faba bean (Vicia faba) in Greece." Systematic and Applied Microbiology 43, no. 6 (2020): 126149. https://doi.org/10.1016/j.syapm.2020.126149.

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The genetic diversity and phylogeny of fast-growing rhizobia isolated from root nodules of <em>Vicia faba</em> grown different geographical regions of Greece were assessed. Although <em>Rhizobium leguminosarum sv.viciae</em> is the most common symbiont of <em>Vicia spp.</em> in European soils, there is no available information on native rhizobia nodulating faba bean in Greece. Seventy bacterial strains were isolated and grouped into sixteen distinct profiles based on BOX-PCR fingerprinting. The phylogenetic affiliation was further defined by equence analysis of the rrs and multilocus sequ

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Liu, Han, Yongliang Cui, Jie Zhou, et al. "Nickel mine soil is a potential source for soybean plant growth promoting and heavy metal tolerant rhizobia." PeerJ 10 (April 21, 2022): e13215. http://dx.doi.org/10.7717/peerj.13215.

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Mine soil is not only barren but also contaminated by some heavy metals. It is unclear whether some rhizobia survived under extreme conditions in the nickel mine soil. Therefore, this study tries to isolate some effective soybean plant growth promoting and heavy metal resistant rhizobia from nickel mine soil, and to analyze their diversity. Soybean plants were used to trap rhizobia from the nickel mine soil. A total of 21 isolates were preliminarily identified as rhizobia, which were clustered into eight groups at 87% similarity level using BOXA1R-PCR fingerprinting technique. Four out of the

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Li, Juan, Zhong-De Yang, En-Tao Wang, Li-Qin Sun, and Yan Li. "The Effect of Climate Variables, Soil Characteristics, and Peanut Cultivars on the Rhizobial Bacteria Community." Microorganisms 13, no. 4 (2025): 926. https://doi.org/10.3390/microorganisms13040926.

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Peanuts are widely cultivated across the world; however, peanut’s rhizobial community and the determinant factors of their composition are still to be elucidated. This study investigates the biogeography and determinant soil environmental factors for peanut rhizobia. A total of 1001 rhizobial isolates were obtained from the peanut root nodules, mainly belonging to two cultivars (X9 and M6) cultivated in 20 sampling sites across China. According to recA sequence analysis, all the isolates were classified as 84 haplotypes, and a representative strain for each haplotype was randomly selected to p

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Lisboa, Bruno Britto, Thomas Müller Schmidt, Arthur Henrique Ely Thomé, et al. "Indigenous rhizobial strains SEMIA 4108 and SEMIA 4107 for common bean inoculation: A biotechnological tool for cleaner and more sustainable agriculture." Experimental Agriculture 57, no. 1 (2021): 57–67. http://dx.doi.org/10.1017/s0014479721000041.

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SummaryInoculation of symbiotic N2-fixing rhizobacteria (rhizobia) in legumes is an alternative to reduce synthetic N fertiliser input to crops. Even though common bean benefits from the biological N2 fixation carried out by native rhizobia isolates, the low efficiency of this process highlights the importance of screening new strains for plant inoculation. Two rhizobial strains (SEMIA 4108 and SEMIA 4107) previously showed great potential to improve the growth of common beans under greenhouse conditions. Thus, this study evaluated the growth and grain yield of common bean plants inoculated wi

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Monika, Atul Parashar, Priyanka Batra, and Leela Wati. "Isolation and Characterization of Thermotolerant Mungbean (Vigna Radiata L.) Rhizobial Isolate As Biofertilizer." Bangladesh Journal of Botany 52, no. 2 (2023): 217–24. http://dx.doi.org/10.3329/bjb.v52i2.66940.

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Rhizobia act as primary nitrogen fixing microorganisms in the root of leguminous plants. Efficient rhizobia are helpful in increasing productivity of legumes. In the present investigation a total of twenty rhizobial isolates were retrieved from root nodules of mungbean plants growing in field during summer season. On evaluation of plant growth promoting traits of all rhizobial isolates it was found that rhizobial isolate HSR1 had maximum indole acetic acid (IAA) production (58.83 μg/ml), ammonia excretion (4.78 μg/ml) and phosphate solubilization potential. Other plant growth promoting traits

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Šimon, T., and J. Salava. "New Rhizobium leguminosarum bv. trifolii isolates: Evaluation of competitiveness for clover nodule occupancy." Plant, Soil and Environment 52, No. 10 (2011): 441–48. http://dx.doi.org/10.17221/3464-pse.

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An interrelationship between introduced and indigenous rhizobia focused on their competitiveness in nodulation was evaluated in a soil pot experiment. Clover seeds were inoculated by six different gradual concentrations of inoculum of two effective Rhizobium leguminosarum bv. trifolii isolates (inoculation strains 1/2 and 14/2). At the beginning of flowering, clover plants were removed from the pots, and nodules from each pot representing different degrees of inoculum level were taken for reisolate cultivation. The PCR technique was used for the identification of rhizobial reisolates, random a

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SMIRNOVA, I., A. SADANOV, G. BAIMAKHANOVA, E. FAIZULINA, and L. TATARKINA. "USING SALT-TOLERANT RHIZOBIA TO IMPROVE THE SOYBEAN (GLYCINE MAX) RESILIENCE TO SALINITY." SABRAO Journal of Breeding and Genetics 55, no. 3 (2023): 810–24. http://dx.doi.org/10.54910/sabrao2023.55.3.17.

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Soybean (Glycine max [L.] Merr.) is an economically important oilseed crop with an annual increase in growing grain demand. Soybean is a moderately salt-tolerant crop; however, salt stress conditions can affect its growth and yield-related traits and, eventually, reduce productivity. In saline soils, one of the techniques to increase soybean productivity is to use rhizobia inoculation. Although, using industrial rhizobia-based biofertilizers is often ineffective due to their lack of adaptability to salinity. Injecting soybeans with salt-tolerant and growth-promoting rhizobia helps mitigate the

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Bolarinwa, Saheed Tunde, and Anthony Ozoemenam Uzoma. "Symbiotic Effectiveness of Rhizobia Strains Isolated from Nigerian Savanna." Advanced Journal of Graduate Research 5, no. 1 (2018): 24–32. http://dx.doi.org/10.21467/ajgr.5.1.24-32.

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Laboratory and screenhouse experiment were conducted to assess the symbiotic effectiveness (SE) of rhizobia isolated from southern Guinea savanna, northern Guinea savanna and Sudan savanna of Nigeria and response of promiscuous soybean varieties, TGx1448-2E, TGx1835-10E and TGx1955-10E to inoculation with ten indigenous rhizobia isolates. The soybean varieties were grown on sterilized sand at the screenhouse of the Department of Soil Science and Land Management, Federal University of Technology Minna and watered using Sandsman’s nutrient solution. The treatments were un-inoculated control, min

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Yadav, Amit, Divya Solanki, Ghanshyam Sharma, Dr Gunjan Dubey, and Dr Indu Singh Sankhla*, Sankhla. "Phenotypic and Biochemical Characterization of Rhizobia Associated with Medicagopolymorpha Growing in Rajasthan." Indian Journal of Advanced Botany 2, no. 2 (2022): 5–11. http://dx.doi.org/10.54105/ijab.b2012.102222.

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In present study, a total of 15rhizobial isolates were isolated from the root nodules of Medicagopolymorphagrowing in Jaipur and were characterized for their phenotypic, biochemical and plant growth promoting activities. The root nodules of M. polymorpha were elongated, branched and indeterminate. All isolated rhizobia were highly diverse in their physiological traits. Based on colony morphology, all isolates were categorized into six groups. Major group containing 6 isolates (MP1, MP3, MP9, MP10, MP11 and MP13) showed white, opaque, raised, smooth edges, non-gummy, and mucilaginous characteri

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Gómez-Acata, Selene, Enriqueta Amora-Lazcano, En Tao Wang, et al. "Nodule-forming Sinorhizobium and arbuscular mycorrhizal fungi (AMF) improve the growth of Acacia farnesiana (Fabaceae): an alternative for the reforestation of the Cerro de la Estrella, Mexico." Botanical Sciences 97, no. 4 (2019): 609–22. http://dx.doi.org/10.17129/botsci.2200.

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Background: Cerro de la Estrella (CE) is a natural reserve in Mexico City that suffers from afforestation, and its restoration with Acacia farnesiana is being considered.Question: Will the nodule-forming rhizobia and arbuscular mycorrhizal fungi (AMF) associated with the CE soil support A. farnesiana growth?Study species: Acacia farnesiana (L.) Willd. (Fabaceae).Methods: Mycorrhizal fungi, nodule-forming rhizobia and physicochemical characteristics of the CE soil were studied to determine if they are suitable for improving the growth of Acacia farnesiana.Results: Four different families of AMF

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DIAS, SUELANE DE MELO, ALBERÍCIO PEREIRA DE ANDRADE, ADAILSON PEREIRA DE SOUZA, ANDRÉ LUIZ RODRIGUES MAGALHÃES, RISELANE DE LUCENA ALCÂNTARA BRUNO, and ROBERTA DE LIMA VALENÇA. "MORPHOPHYSIOLOGY OF RHIZOBIA ISOLATED FROM NATIVE FORAGE OF FABACEAE OF THE CAATINGA." Revista Caatinga 32, no. 4 (2019): 904–14. http://dx.doi.org/10.1590/1983-21252019v32n406rc.

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ABSTRACT The rhizobia found in Fabaceae plants of the Caatinga may have potential as fodder in the semiarid region, thus increasing the availability of feed for animal production in this region. This study aimed to characterize the morphophysiology of rhizobia strains of the forage species Mimosa tenuiflora (Jurema preta), Macroptilium atropurpureum (Siratro), and Desmanthus pernambucanus (Jureminha). The soil used as the substrate was collected at specific locations in the municipalities of Sertânia, Arcoverde, and São Bento do Una, state of Pernambuco. The characterization of rhizobial colon

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Bernal, Gustavo, and Peter H. Graham. "Diversity in the rhizobia associated withPhaseolus vulgarisL. in Ecuador, and comparisons with Mexican bean rhizobia." Canadian Journal of Microbiology 47, no. 6 (2001): 526–34. http://dx.doi.org/10.1139/w01-037.

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Common beans (Phaseolus vulgaris L.) have centers of origin in both Mesoamerica and Andean South America, and have been domesticated in each region for perhaps 5000 years. A third major gene pool may exist in Ecuador and Northern Peru. The diversity of the rhizobia associated with beans has also been studied, but to date with an emphasis on the Mesoamerican center of origin. In this study we compared bean rhizobia from Mexico and Andean South America using both phenotypic and phylogenetic approaches. When differences between the rhizobia of these two regions were shown, we then examined the in

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Tanim, Md Tauhidul Islam, Md Miraj Kobad Chowdhury, Latiful Bari, Md Mizanur Rahaman, Sabita Rezwana Rahman, and Md Majibur Rahman. "Genetic diversity of Rhizobium spp. isolated from soil samples of Bangladesh." Bangladesh Journal of Microbiology 36, no. 1 (2019): 7–10. http://dx.doi.org/10.3329/bjm.v36i1.44261.

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Rhizobia are Gram-negative soil-inhabiting bacteria commonly found in nodules of leguminous plants. These bacteria exclusively fix atmospheric nitrogen into ammonia, which is convertible to urea to serve natural fertilizer to the plants. However, rhizobial microbiota of Bangladesh have been studied poorly. Here, twenty isolates were identified as Rhizobium through observation of cultural characteristics, morphological characteristics and different biochemical tests. Isolates differed from one another in terms of their stress response characteristics like salt-stress tolerance,temperature toler

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Paudyal, Som Prasad, and Vimal NP Gupta. "Bio-chemical characterization of rhizobia isolated from root nodules of Velvet bean (Mucuna pruriens L.)." Our Nature 15, no. 1-2 (2017): 7–12. http://dx.doi.org/10.3126/on.v15i1-2.18788.

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Rhizobia are the symbiotic bacteria found in the soil which have potential ability to convert atmospheric di-nitrogen into usable form. A total of ten rhizobial strains were isolated from the root nodules of a medicinal legume Mucuna pruriens (L.) that commonly grow in the foothills of the Himalaya. All the ten strains isolated from different locations of same area were morphologically, biochemically and physiologically characterized based on the Bergey’s Manual of systematic Bacteriology. They were tested for the antibiotics sensitivity. The isolates showed high sensitivity to amoxicillin and

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Wielbo, Jerzy, Monika Marek-Kozaczuk, Agnieszka Kubik-Komar, and Anna Skorupska. "Increased metabolic potential of Rhizobium spp. is associated with bacterial competitiveness." Canadian Journal of Microbiology 53, no. 8 (2007): 957–67. http://dx.doi.org/10.1139/w07-053.

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Of 105 rhizobial isolates obtained from nodules of commonly cultivated legumes, we selected 19 strains on the basis of a high rate of symbiotic plant growth promotion. Individual strains within the species Rhizobium leguminosarum bv. trifolii , R. leguminosarum bv. viciae , and Rhizobium etli displayed variation not only in plasmid sizes and numbers but also in the chromosomal 16S–23S internal transcribed spacer. The strains were tagged with gusA gene and their competitiveness was examined in relation to an indigenous population of rhizobia under greenhouse conditions. A group of 9 strains was

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Kucey, R. M. N., and M. F. Hynes. "Populations of Rhizobium leguminosarum biovars phaseoli and viceae in fields after bean or pea in rotation with nonlegumes." Canadian Journal of Microbiology 35, no. 6 (1989): 661–67. http://dx.doi.org/10.1139/m89-107.

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Populations of Rhizobium leguminosarum bv. phaesoli and bv. viceae in southern Alberta soils were measured over a period of 4 years using a most probable number method. Five fields cropped to bean (Phaseolus vulgaris L.), five fields cropped to pea (Pisum sativum L.), and two fields cropped to wheat were used as test sites. Legume crops had received appropriate legume inoculants. Fields were sampled in the fall of the crop year and in the spring of the following 3 years during which fields were cropped to nonlegumes or left fallow. Numbers of R. leguminosarum bv. phaseoli were 100 to 1000 time

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Lombardi, Maria Luiza Colognesi de Oliveira, Milene Moreira, Luís Alberto Ambrósio, and Elke Jurandy Bran Nogueira Cardoso. "Occurence and host specificity of indigenous rhizobia from soils of São Paulo State, Brazil." Scientia Agricola 66, no. 4 (2009): 543–48. http://dx.doi.org/10.1590/s0103-90162009000400018.

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The occurrence of rhizobial communities at four sites under natural vegetation and one site under pasture were examined. Isolates of rhizobia originating from crotalaria (C. junceae), common bean (Phaseolus vulgaris) and pigeon pea (Cajanus cajan) were studied in relation to population density, host specificity and the interaction between rhizobial occurrence, climatic conditions and soil properties. pH values and potential acidity were the soil properties that most affected rhizobial occurrence. Rhizobia from crotalaria and common bean were evaluated at four sites, and from pigeon pea, at fiv

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