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Artículos de revistas sobre el tema "Phytophthora cinnamomi"

Autor: Grafiati

Publicado: 4 de junio de 2021

Última modificación: 10 de marzo de 2023

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1

HARDHAM, ADRIENNE R. "Phytophthora cinnamomi." Molecular Plant Pathology 6, no. 6 (November 2005): 589–604. http://dx.doi.org/10.1111/j.1364-3703.2005.00308.x.

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2

Hardham, Adrienne R., and Leila M. Blackman. "Phytophthora cinnamomi." Molecular Plant Pathology 19, no. 2 (August 22, 2017): 260–85. http://dx.doi.org/10.1111/mpp.12568.

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3

McDougall, K. L., G. E. St J. Hardy, and R. J. Hobbs. "Additions to the host range of Phytophthora cinnamomi in the jarrah (Eucalyptus marginata) forest of Western Australia." Australian Journal of Botany 49, no. 2 (2001): 193. http://dx.doi.org/10.1071/bt99028.

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Pathogenicity tests with Phytophthora cinnamomi were conducted on 25 perennial species from the jarrah (Eucalyptus marginata) forest of Western Australia. Most species tested had been found in a separate study to be scarce on sites affected by Phytophthora cinnamomi but frequently found in unaffected vegetation. Some species that were known to be field-tolerant of P. cinnamomi and some that were highly susceptible to infection were included in the study for comparison. Phytophthora cinnamomi was recorded from 13 of 17 species not previously known to be susceptible. Phytophthora cinnamomi was s

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4

Mora-Sala, Beatriz, Mónica Berbegal, and Paloma Abad-Campos. "The Use of qPCR Reveals a High Frequency of Phytophthora quercina in Two Spanish Holm Oak Areas." Forests 9, no. 11 (November 10, 2018): 697. http://dx.doi.org/10.3390/f9110697.

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The struggling Spanish holm oak woodland situation associated with Phytophthora root rot has been studied for a long time. Phytophthora cinnamomi is considered the main, but not the only species responsible for the decline scenario. This study verifies the presence and/or detection of Phytophthora species in two holm oak areas of Spain (southwestern “dehesas” and northeastern woodland) using different isolation and detection approaches. Direct isolation and baiting methods in declining and non-declining holm oak trees revealed Phytophthora cambivora, Phytophthora cinnamomi, Phytophthora gonapo

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5

Kurzawińska, H., and I. Gajda. "Fungi isolated from soil with quicksets of Chamaecyparis lawsoniana and their influence on the growth of Phytophthora cinnamomi and Rhizoctonia solani." Plant Protection Science 38, SI 2 - 6th Conf EFPP 2002 (December 31, 2017): 631–33. http://dx.doi.org/10.17221/10576-pps.

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Chamaecyparis lawsoniana is often attacked by other pathogens (from genera: Phytophthora, Pythium, Fusarium, Rhizoctonia) both when the quicksets are taken root and later, when the young plants are planted. The aim of the study was to determine an effect of saprobiotic fungi isolated from soil with quicksets Chamaecyparis lawsoniana on the growth of Phytophthora cinnamomi and Rhizoctonia solani. In our experiment, method series biotic was used (MAŃKA 1974). This method allowed to determine index of impendence for plants by Phytophthora cinnamomi and Rhizoctonia solani with the help of summary

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6

McConnell, M. E., and Y. Balci. "Phytophthora cinnamomi as a Contributor to White Oak Decline in Mid-Atlantic United States Forests." Plant Disease 98, no. 3 (March 2014): 319–27. http://dx.doi.org/10.1094/pdis-06-13-0649-re.

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To evaluate Phytophthora cinnamomi as a cause of white oak (Quercus alba) decline in mid-Atlantic forests, sampling was conducted at 102 sites from 2011 to 2012. Soil and roots from healthy and declining white oak trees were collected. Phytophthora spp. were isolated using baiting and CFU of P. cinnamomi quantified using wet-sieving. Fine roots were scanned and measured. Phytophthora spp. were isolated from 43% of the sites. P. cinnamomi was common; six other species were isolated infrequently. Little difference in lesion size existed on white oak seedlings inoculated with 32 isolates of P. ci

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7

Balci, Y., S. Balci, J. Eggers, W. L. MacDonald, J. Juzwik, R. P. Long, and K. W. Gottschalk. "Phytophthora spp. Associated with Forest Soils in Eastern and North-Central U.S. Oak Ecosystems." Plant Disease 91, no. 6 (June 2007): 705–10. http://dx.doi.org/10.1094/pdis-91-6-0705.

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A survey of soils associated with oak species was conducted in 2003 and 2004 in Indiana, Illinois, Maryland, Michigan, Minnesota, Pennsylvania, Ohio, West Virginia, and Wisconsin to investigate the occurrence of Phytophthora spp. Soils taken from around the base of healthy and declining oak trees were flooded with H2O and Quercus robur leaflets were used as bait for Phytophthora spp. From 829 soil samples collected near trees, 21% were positive for Phytophthora spp., with 55% of the 125 sites surveyed yielding a Phytophthora sp. Phytophthora cinnamomi was the most frequently isolated species,

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8

Juhásová, G., and S. Bernadovičová. "Efficacy of biofungicides Supresivit and Polyversum against Phytophthora root pathogens on European chestnut (Castanea sativa Mill.)." Horticultural Science 31, No. 3 (November 25, 2011): 109–14. http://dx.doi.org/10.17221/3802-hortsci.

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The effect of two commercially produced biopreparations on the originators of chestnut ink disease in Slovakia &ndash; soil fungi Phytophthora cambivora and Phytophthora cinnamomi was tested in laboratory conditions. Investigations of interrelations between Trichoderma harzianum (Pythium oligandrum) and isolates of Phytophthora sp. obtained from infected tissues of Castanea sativa Mill. proved more important inhibitive effects for Pythium oligandrum (biopreparation Polyversum) efficiency 25.3% (Ph. cambivora) and 26.2% (Ph. cinnamomi). Biopreparation Supresivit (Trichoderma harzianum) rea

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9

Agapito Amador, María Eugenia, Víctor David Cibrián-Llanderal, Mónica Gutiérrez Rojas, Daniel Ruiz-Juárez, Betzabe Ebenhezer López Corona, and Edgar Omar Rueda-Puente. "Phytophthora cinnamomi Rands en aguacate." Revista Mexicana de Ciencias Agrícolas, no. 28 (September 22, 2022): 331–41. http://dx.doi.org/10.29312/remexca.v13i28.3287.

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El objetivo de la presente revisión es dar a conocer el estatus epidemiológico de Phytophthora cinnamomi Rands en interacción con Persea americana Mill. y las alternativas de manejo fitosanitario autorizadas. El ensayo se realizó con base en reportes de instancias oficiales y científicas en materia de sanidad vegetal, de brotes epidemiológicos de la enfermedad tristeza del aguacate causada por P. cinnamomi. A nivel mundial, la pérdida de árboles de aguacate fue exponencial, debido a la enfermedad causada por el oomiceto P. cinnamomi quien presentó comportamiento epidemiológico a nivel nacional

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10

Joubert, Melissa, Robert Backer, Juanita Engelbrecht, and Noëlani van den Berg. "Expression of several Phytophthora cinnamomi putative RxLRs provides evidence for virulence roles in avocado." PLOS ONE 16, no. 7 (July 14, 2021): e0254645. http://dx.doi.org/10.1371/journal.pone.0254645.

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Phytophthora cinnamomi is a plant pathogenic oomycete that causes Phytophthora root rot of avocado (PRR). Currently, there is a limited understanding of the molecular interactions underlying this disease. Other Phytophthora species employ an arsenal of effector proteins to manipulate host physiology, of which the RxLR effectors contribute to virulence by interfering with host immune responses. The aim of this study was to identify candidate RxLR effectors in P. cinnamomi that play a role in establishing PRR, and to infer possible functions for these effectors. We identified 61 candidate RxLR g

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11

Kim, Hyung-Moo, Kyo-Hoon Jin, and Jung-Ae Ko. "Stem Rot of English Ivy Caused by Phytophthora cinnamomi." Research in Plant Disease 13, no. 3 (December 1, 2007): 207–10. http://dx.doi.org/10.5423/rpd.2007.13.3.207.

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12

Downer, A. J., J. A. Menge, and E. Pond. "Association of Cellulytic Enzyme Activities in Eucalyptus Mulches with Biological Control of Phytophthora cinnamomi." Phytopathology® 91, no. 9 (September 2001): 847–55. http://dx.doi.org/10.1094/phyto.2001.91.9.847.

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A series of samples were taken from mulched and unmulched trees starting at the surface of mulch or soil to a 15 cm soil depth, forming a vertical transect. Saprophytic fungi isolated from the soil samples on rose bengal medium and surveyed visually were most abundant in mulches and at the interface of mulch and soil (P < 0.05). Microbial activity as assayed by the hydrolysis of fluorescein diacetate was significantly greater in mulch layers than in soils. Cellulase and laminarinase enzyme activities were greatest in upper mulch layers and rapidly decreased in soil layers (P < 0.05). Enz

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13

Benson, D. M., and Frank A. Blazich. "Control of Phytophthora Root Rot of Rhododendron chapmanii A. Gray with Subdue." Journal of Environmental Horticulture 7, no. 2 (June 1, 1989): 73–75. http://dx.doi.org/10.24266/0738-2898-7.2.73.

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Abstract Rooted cuttings of Chapman's rhododendron (Rhododendron chapmanii) in soilless medium were challenged with inoculum of the soi1borne fungus, Phytophthora cinnamomi (Rands). A portion of the plants received a soil drench of Subdue 2EC (metalaxyl) at 0.16 ml/L (2.0 oz/100 gal) at 2 month intervals. Chapman's rhododendron was highly susceptible to P. cinnamomi, but five of six plants treated with Subdue did not develop symptoms of Phytophthora root rot. In the one plant which developed root rot symptoms, P. cinnamomi was recovered in culture.

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14

Varghese, Binta, Ravisankar Valsalan, and Deepu Mathew. "Novel MicroRNAs and their Functional Targets from Phytophthora infestans and Phytophthora cinnamomi." Current Genomics 23, no. 1 (January 2022): 41–49. http://dx.doi.org/10.2174/1389202923666211223122305.

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Background: Even though miRNAs play vital roles in developmental biology by regulating the translation of mRNAs, they are poorly studied in oomycetes, especially in the plant pathogen Phytophthora. Objective: The study aimed to predict and identify the putative miRNAs and their targets in Phytophthora infestans and Phytophthora cinnamomi. Methods: The homology-based comparative method was used to identify the unique miRNA sequences in P. infestans and P. cinnamomi with 148,689 EST and TSA sequences of these species. Secondary structure prediction of sRNAs for the 76 resultant sequences has bee

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15

Shearer, BL, BJ Michaelsen, and HJ Warren. "Comparative Behaviour of Phytophthora Species in the Secondary Phloem of Stems and Excised Roots of Banksia grandis and Eucalyptus marginata." Australian Journal of Botany 35, no. 1 (1987): 103. http://dx.doi.org/10.1071/bt9870103.

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We inoculated excised roots under controlled laboratory conditions and inoculated stems in the field to compare the behaviour of Phytophthora cactorum, P. cambivora, P. cinnamomi A2, P. citricola, P. cryptogea A1 and A2, P. megasperma var. sojae and P. nicotianae var. parasitica in the secondary phloem of Banksia grandis and Eucalyptus marginata. Most of the Phytophthora species grew in excised roots of E. marginata at a similar rate. Of the Phytophthora species with similar rates of growth in E. marginata roots, P. cinnamomi was the only species that consistently grew faster in excised roots

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16

Horner, I. J., and E. G. Hough. "Pathogenicity of four Phytophthora species on kauri in vitro and glasshouse trials." New Zealand Plant Protection 67 (January 8, 2014): 54–59. http://dx.doi.org/10.30843/nzpp.2014.67.5722.

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In kauri forest soils surveys Phytophthora taxon Agathis (PTA) P cinnamomi P multivora and P cryptogea were detected frequently In vitro and glasshouse studies determined that all four Phytophthora species produced lesions on excised kauri leaves and stems Lesion advance was significantly slower with P cinnamomi P multivora and P cryptogea than with PTA When 2yearold kauri seedlings were trunkinoculated lesion spread was rapid with PTA trunks were girdled and all trees died within 46 weeks Phytophthora cinnamomi P multivora and P cryptogea produced substantially smaller lesions than PTA no tre

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17

Andrade-Hoyos, Petra, Omar Romero-Arenas, Hilda Victoria Silva-Rojas, Alfonso Luna-Cruz, José Espinoza-Pérez, Aarón Mendieta-Moctezuma, and José Alberto Urrieta-Velázquez. "Cinnamom verum Plantations in the Lowland Tropical Forest of Mexico Are Affected by Phytophthora cinnamomi, Phylogenetically Classified into Phytophthora Subclade 7c." Horticulturae 9, no. 2 (February 2, 2023): 187. http://dx.doi.org/10.3390/horticulturae9020187.

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Cinnamon is a tree introduced to the lowlands of Mexico in the mid-16th century, but it spread to other places at the beginning of the 20th century due to its important commercial value as an aromatic spice. In the state of Veracruz, symptoms of dieback have been observed in 12-year-old cinnamon plantations cultivated in an agroforestry system, causing concern among producers. For this reason, the present investigation was carried out to determine the causal agent of these symptoms observed in cinnamon trees. Fifty symptomatic plants were recovered from established plantations. One hundred cin

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18

Vivas, María, Jerónimo Hernández, Tamara Corcobado, Elena Cubera, and Alejandro Solla. "Transgenerational Induction of Resistance to Phytophthora cinnamomi in Holm Oak." Forests 12, no. 1 (January 18, 2021): 100. http://dx.doi.org/10.3390/f12010100.

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The maternal environment of a tree species can influence the development and resistance of its offspring. Transgenerational induction of resistance is well known in plants but its occurrence in forest tree species has been less reported. Quercus ilex L. (holm oak) is a widespread Mediterranean tree species threatened by the invasive Phytophthora cinnamomi Rands pathogen. The influence of P. cinnamomi on the offspring of infected Q. ilex mother trees has not been studied. This study compared the performance and tolerance to P. cinnamomi of seedlings from non-infected and P. cinnamomi-infected t

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19

Weiland, Jerry E., Carolyn F. Scagel, Niklaus J. Grünwald, E. Anne Davis, Bryan R. Beck, and Val J. Fieland. "Variation in Disease Severity Caused by Phytophthora cinnamomi, P. plurivora, and Pythium cryptoirregulare on Two Rhododendron Cultivars." Plant Disease 102, no. 12 (December 2018): 2560–70. http://dx.doi.org/10.1094/pdis-04-18-0666-re.

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Rhododendrons are an important crop in the ornamental nursery industry, but are prone to Phytophthora root rot. Phytophthora root rot is a continuing issue on rhododendrons despite decades of research. Several Phytophthora species are known to cause root rot, but most research has focused on P. cinnamomi, and comparative information on pathogenicity is limited for other commonly encountered oomycetes, including Phytophthora plurivora and Pythium cryptoirregulare. In this study, three isolates each of P. cinnamomi, P. plurivora, and Py. cryptoirregulare were used to inoculate rhododendron culti

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20

Hu, Jiahuai, Chuanxue Hong, Erik L. Stromberg, and Gary W. Moorman. "Mefenoxam Sensitivity in Phytophthora cinnamomi Isolates." Plant Disease 94, no. 1 (January 2010): 39–44. http://dx.doi.org/10.1094/pdis-94-1-0039.

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Phytophthora cinnamomi is a destructive root pathogen of numerous woody plant species in the ornamental plant nursery. Sixty-five isolates of P. cinnamomi were evaluated for mefenoxam sensitivity on 20% clarified V8 agar amended with mefenoxam at 0 or 100 μg/ml. In the presence of mefenoxam at 100 μg/ml, eight isolates were intermediately sensitive, with mycelium growth ranging between 11 and 18% of the nonamended control, and 57 isolates were highly sensitive, with little or no mycelium growth. Five intermediately sensitive and five sensitive isolates were chosen to characterize their respons

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21

Dai, Tingting, Xiao Yang, Tao Hu, Zhongyan Li, Yue Xu, and Chenchen Lu. "A Novel LAMP Assay for the Detection of Phytophthora cinnamomi Utilizing a New Target Gene Identified From Genome Sequences." Plant Disease 103, no. 12 (December 2019): 3101–7. http://dx.doi.org/10.1094/pdis-04-19-0781-re.

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Phytophthora cinnamomi is an ecologically and agriculturally significant plant pathogen. Early and accurate detection of P. cinnamomi is paramount to disease prevention and management. In this study, a loop-mediated isothermal amplification (LAMP) assay utilizing a new target gene Pcinn100006 identified from genomic sequence data was developed and evaluated for the detection of P. cinnamomi. This Pcinn100006 LAMP assay was found highly specific to P. cinnamomi. All 10 tested isolates of P. cinnamomi yielded positive results, whereas 50 isolates belonging to 16 other Phytophthora species, Globi

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22

Shearer, BL, and M. Dillon. "Susceptibility of Plant Species in Eucalyptus marginata Forest to Infection by Phytophthora cinnamomi." Australian Journal of Botany 43, no. 1 (1995): 113. http://dx.doi.org/10.1071/bt9950113.

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Estimates of the susceptibility of plant species of Eucalyptus marginata forest to Phytophthora cinnamomi were obtained by determining the frequency of plant death and isolation of the pathogen from plants occurring in disease centres in the forest. Plant species were assessed and sampled in 63 active disease centres and 17 old centres infested with P. cinnamomi in E. marginata forest north of the Preston River, south-westem Australia. Impact of P. cinnamomi was intermediate (scattered deaths) in 46% of active disease centres and high (most susceptible plants dead) in 29% of active centres. Im

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23

Maia, I., C. Medeira, E. Melo, and A. Cravador. "Quercus suber Infected by Phytophthora cinnamomi. Effects at Cellular Level of Cinnamomin on Roots, Stem and Leaves." Microscopy and Microanalysis 14, S3 (September 2008): 146–47. http://dx.doi.org/10.1017/s1431927608089708.

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Phytophthora cinnamomi has been reported to be regularly associated with cork and holm oak decline. This oomycete secretes elicitins, a group of unique highly conserved proteins that can enhance plant defence reactions.

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24

Hyde, Geoffrey J., Frank Gubler, and Adrienne R. Hardham. "Ultrastructure of zoosporogenesis in Phytophthora cinnamomi." Mycological Research 95, no. 5 (May 1991): 577–91. http://dx.doi.org/10.1016/s0953-7562(09)80072-5.

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25

Reed, Sharon E., James T. English, and Rose-Marie Muzika. "Phytophthora Species Detected in Two Ozark Forests with Unusual Patterns of White Oak Mortality." Plant Disease 103, no. 1 (January 2019): 102–9. http://dx.doi.org/10.1094/pdis-02-18-0253-re.

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Widespread decline and mortality of white oaks (Quercus alba) occurred in Missouri Ozark forests between 2011 and 2017. Symptoms included rapid crown death with bronzing of leaves, retention of dead leaves, crown dieback and thinning, and loss of large limbs within one year of death. Decline and mortality were associated with hillside drainages and fit descriptions of European oak forests predisposed to decline by pathogenic Phytophthora species. A survey was performed at two locations in 2014 and 2015 to assess the distribution of dead and declining white oaks, and the occurrence and distribu

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26

Hardham, A. R., E. Suzaki, and J. L. Perkin. "Monoclonal antibodies to isolate-, species-, and genus-specific components on the surface of zoospores and cysts of the fungus Phytophthora cinnamomi." Canadian Journal of Botany 64, no. 2 (February 1, 1986): 311–21. http://dx.doi.org/10.1139/b86-045.

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Monoclonal antibodies have been raised to components on the surface of glutaraldehyde-fixed zoospores and cysts of an isolate of the pathogenic fungus Phytophthora cinnamomi. Hybridoma supernatants were screened using an immunofluorescence assay, and of 35 cell lines producing antibodies that reacted with the P. cinnamomi cells, 10 have been selected and their specificities examined in detail. The monoclonal antibodies were found to possess a valuable spectrum of taxonomic specificities, and have revealed, for the first time, the presence of isolate-specific antigens on the surface of P. cinna

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27

Varfolomeeva, E. A., and E. O. Rezanko. "Methods of supporting the development of Phytophthora cinnamomi rands on representatives of the Ericaceae DC family. In the orangeries of the Botanical garden of Peter the Great." Plant Biology and Horticulture: theory, innovation 1, no. 157 (January 11, 2021): 26–33. http://dx.doi.org/10.36305/2712-7788-2020-4-157-26-33.

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In recent years, in the orangeries of the Peter the Great Botanical Garden, the affection of representatives of the Ericaceae family, the genus rhododendron (Rhododendron (L.) oomycete Phytophthora cinnamomi, has been growing. In the study of the rhizospheric soil of sick and healthy plants, a wide distribution of Phytophthora was found. representatives of this family. The dynamics of the spread of the disease from 2012 to 2019 is presented. The population of Phytophthora cinnamomi in the soils is unevenly distributed, changing its structure (abundance, survival, seasonality, life cycle) in ac

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28

Gastañadui, Paul, Rocío Moreno, Patricia Elena Quiroz-Delgado, and Walter Eduardo Apaza-Tapia. "Control of avocado root rot caused by Phytophthora cinnamomi with different Trichoderma strains at Chavimochic Irrigation Project." Peruvian Journal of Agronomy 5, no. 3 (December 30, 2021): 78–86. http://dx.doi.org/10.21704/pja.v5i3.1846.

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Avocado root rot caused by Phytophthora cinnamomi is one of the main problems affecting avocado (Persea americana) cultivation in Peru, especially at the Chavimochic Irrigation Project. The objective of this study was to evaluate the effect of different Trichoderma strains on the control of Phytophthora cinnamomi in Zutano rootstock under greenhouse conditions. Five isolates of Trichoderma were tested: Trichoderma sp. (Chav01); Trichoderma harzianum (Chavo2); Trichoderma harzianum (UNALM01); Trichoderma viride (UNALM02); and a commercial strain of Trichoderma sp. Evaluations were performed at

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29

Saiz-Fernández, Iñigo, Ivan Milenković, Miroslav Berka, Martin Černý, Michal Tomšovský, Břetislav Brzobohatý, and Pavel Kerchev. "Integrated Proteomic and Metabolomic Profiling of Phytophthora cinnamomi Attack on Sweet Chestnut (Castanea sativa) Reveals Distinct Molecular Reprogramming Proximal to the Infection Site and Away from It." International Journal of Molecular Sciences 21, no. 22 (November 12, 2020): 8525. http://dx.doi.org/10.3390/ijms21228525.

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Phytophthora cinnamomi is one of the most invasive tree pathogens that devastates wild and cultivated forests. Due to its wide host range, knowledge of the infection process at the molecular level is lacking for most of its tree hosts. To expand the repertoire of studied Phytophthora–woody plant interactions and identify molecular mechanisms that can facilitate discovery of novel ways to control its spread and damaging effects, we focused on the interaction between P. cinnamomi and sweet chestnut (Castanea sativa), an economically important tree for the wood processing industry. By using a com

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30

Akıllı Şimşek, Seçil, Yakup Zekai Katırcıoğlu, and Salih Maden. "Türkiye’de Orman, Park ve Fidanlıklarda Görülen Phytophthora Kök Çürüklüğü Hastalıkları ve Korunma Önlemleri." Turkish Journal of Agriculture - Food Science and Technology 6, no. 6 (June 26, 2018): 770. http://dx.doi.org/10.24925/turjaf.v6i6.770-782.1928.

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Phytophthora species, as a member of Oomycetes are important plan diseases occurring on almost all of the annual and perennial plants and rapidly killing the plants by producing root, collar rots and leaf blights. The first Phytophthora study on forest trees in Turkey was made on oak species which is the most widespread tree in the country. Seven Phytophthora species, namely P. cinnamomi, P. citricola, P. cryptogea, P. gonapodyides, P. quercina, Phytophthora sp. 1 and Phytophthora sp. 2’ were found to cause dieback and death on oaks, P. quercina being the most frequently encountered. The secon

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31

Ferraris, L., F. Cardinale, D. Valentino, P. Roggero, and G. Tamietti. "Immunological Discrimination of Phytophthora cinnamomi from other Phytophthorae Pathogenic on Chestnut." Journal of Phytopathology 152, no. 4 (April 2004): 193–99. http://dx.doi.org/10.1111/j.1439-0434.2004.00823.x.

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Linde, C., A. Drenth, G. H. J. Kemp, M. J. Wingfield, and S. L. von Broembsen. "Population Structure of Phytophthora cinnamomi in South Africa." Phytopathology® 87, no. 8 (August 1997): 822–27. http://dx.doi.org/10.1094/phyto.1997.87.8.822.

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Phytophthora cinnamomi isolates collected from 1977 to 1986 and 1991 to 1993 in two regions in South Africa were analyzed using isozymes. A total of 135 isolates was analyzed for 14 enzymes representing 20 putative loci, of which four were polymorphic. This led to the identification of nine different multilocus isozyme genotypes. Both mating types of P. cinnamomi occurred commonly in the Cape region, whereas, predominantly, the A2 mating type occurred in the Mpumalanga region of South Africa. A2 mating type isolates could be resolved into seven multilocus isozyme genotypes, compared with only

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Longmuir, Amy L., Peter L. Beech, and Mark F. Richardson. "Draft genomes of two Australian strains of the plant pathogen, Phytophthora cinnamomi." F1000Research 6 (November 8, 2017): 1972. http://dx.doi.org/10.12688/f1000research.12867.1.

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Background: The oomycete plant pathogen, Phytophthora cinnamomi, is responsible for the destruction of thousands of species of native Australian plants, as well as several crops, such as avocado and macadamia, and has one of the widest host-plant ranges of the Phytophthora genus. The currently available genome of P. cinnamomi is based on an atypical strain and has large gaps in its assembly. To further studies of the pathogenicity of this species, especially in Australia, more robust assemblies of the genomes of more typical strains are required. Here we report the genome sequencing, draft ass

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Longmuir, Amy L., Peter L. Beech, and Mark F. Richardson. "Draft genomes of two Australian strains of the plant pathogen, Phytophthora cinnamomi." F1000Research 6 (February 28, 2018): 1972. http://dx.doi.org/10.12688/f1000research.12867.2.

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Background: The oomycete plant pathogen, Phytophthora cinnamomi, is responsible for the destruction of thousands of species of native Australian plants, as well as several crops, such as avocado and macadamia, and has one of the widest host-plant ranges of the Phytophthora genus. The current reference genome of P. cinnamomi is based on an atypical strain and has large gaps in its assembly. To further studies of the pathogenicity of this species, especially in Australia, robust genome assemblies of more typical strains are required. Here we report the genome sequencing, draft assembly, and prel

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Meadows, I. M., D. C. Zwart, S. N. Jeffers, T. A. Waldrop, and W. C. Bridges. "Effects of Fuel Reduction Treatments on Incidence of Phytophthora Species in Soil of a Southern Appalachian Mountain Forest." Plant Disease 95, no. 7 (July 2011): 811–20. http://dx.doi.org/10.1094/pdis-07-10-0505.

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The National Fire and Fire Surrogate Study was initiated to study the effects of fuel reduction treatments on forest ecosystems. Four fuel reduction treatments were applied to three sites in a southern Appalachian Mountain forest in western North Carolina: prescribed burning, mechanical fuel reduction, mechanical fuel reduction followed by prescribed burning, and a nontreated control. To determine the effects of fuel reduction treatments on Phytophthora spp. in soil, incidences were assessed once before and twice after fuel reduction treatments were applied. Also, the efficiency of the baiting

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Kunadiya, Manisha B., William D. Dunstan, Diane White, Giles E. St J. Hardy, Andrew H. Grigg, and Treena I. Burgess. "A qPCR Assay for the Detection of Phytophthora cinnamomi Including an mRNA Protocol Designed to Establish Propagule Viability in Environmental Samples." Plant Disease 103, no. 9 (September 2019): 2443–50. http://dx.doi.org/10.1094/pdis-09-18-1641-re.

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Phytophthora cinnamomi causes root and collar rot in many plant species in natural ecosystems and horticulture. A species-specific primer and probe PCIN5 were designed based on a mitochondrial locus encoding subunit 2 of cytochrome c oxidase (cox2). Eight PCR primers, including three forward and five reverse, were designed and tested in all possible combinations. Annealing temperatures were optimized for each primer pair set to maximize both specificity and sensitivity. Each set was tested against P. cinnamomi and two closely related clade 7 species, P. parvispora and P. niederhauseri. From th

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Nagle, Annemarie M., Robert P. Long, Laurence V. Madden, and Pierluigi Bonello. "Association of Phytophthora cinnamomi with White Oak Decline in Southern Ohio." Plant Disease 94, no. 8 (August 2010): 1026–34. http://dx.doi.org/10.1094/pdis-94-8-1026.

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A decline syndrome and widespread mortality of mature white oak tree (Quercus alba) associated with wet and low-lying areas has been recently observed in southern Ohio forests. Previous studies have isolated Phytophthora cinnamomi from white oak rhizospheres. In 2008 and 2009, P. cinnamomi population densities in two healthy and two declining white oak stands at Scioto Trail State Forest were quantified and potential roles of three environmental drivers of Phytophthora spp.–induced decline were assessed: soil texture, soil moisture, and topography. Significantly higher P. cinnamomi propagule d

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Bregant, Carlo, Antonio A. Mulas, Giovanni Rossetto, Antonio Deidda, Lucia Maddau, Giovanni Piras, and Benedetto T. Linaldeddu. "Phytophthora mediterranea sp. nov., a New Species Closely Related to Phytophthora cinnamomi from Nursery Plants of Myrtus communis in Italy." Forests 12, no. 6 (May 27, 2021): 682. http://dx.doi.org/10.3390/f12060682.

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Monitoring surveys of Phytophthora related diseases in four forest nurseries in Italy revealed the occurrence of fourteen Phytophthora species to be associated with collar and root rot on fourteen plants typical of Mediterranean and alpine regions. In addition, a multilocus phylogeny analysis based on nuclear ITS and ß-tubulin and mitochondrial cox1 sequences, as well as micromorphological features, supported the description of a new species belonging to the phylogenetic clade 7c, Phytophthora mediterranea sp. nov. Phytophthora mediterranea was shown to be associated with collar and root rot s

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Keast, D., C. Tonkin, and L. Sanfelieu. "Effects of Copper Salts on Growth and Survival of Phytophthora cinnamomi in vitro and on the Antifungal Activity of Actinomycete Populations From the Roots of Eucalyptus marginata and Banksia grandis." Australian Journal of Botany 33, no. 2 (1985): 115. http://dx.doi.org/10.1071/bt9850115.

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Seven copper salts and 10 isolates from both mating types of Phytophthora cinnamomi have been tested, in vitro, for copper cation toxicity to mycelial mat growth and to the germination of chlamydospores. It has been shown that while the copper ion is toxic, extended periods of exposure (9-23 days) to the cation are often required to change the fungistatic activity to that of a true fungicide. This observation applies to both mycelial growth and to chlamydospore germination of P. cinnamomi. Soluble copper (CuS02.5H20) gave short-term protection of both Eucalyptus marginata and to a lesser degre

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Duncan, MJ, and PJ Keane. "Vegetation Changes Associated With Phytophthora cinnamomi and Its Decline Under Xanthorrhoea australis in Kinglake National Park, Victoria." Australian Journal of Botany 44, no. 3 (1996): 355. http://dx.doi.org/10.1071/bt9960355.

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Changes in the species composition associated with the presence of Phytophthora cinnamomi Rands and changes in the potential activity of the fungus were measured at a dry sclerophyll forest site in Kinglake National Park. In soil infested with P. cinnamomi, both the percentage cover and density of the major overstorey species (Eucalyptus dives Schauer in Walp. and E. macrorhyncha F.Muell.) and major understorey species (Xanthorrhoea australis R.Br., Daviesia ulicifolia Andrews and Dillwynia phylicoides Cunn.) were significantly reduced, while both the cover and density of the sedge species (Ga

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41

Toapanta Gallegos, Diana Elizabeth. "Diagnóstico molecular de Phytophthora cinnamomi asociado a la pudrición radicular en zonas productoras de aguacate en Ecuador." Corpoica Ciencia y Tecnología Agropecuaria 18, no. 2 (May 8, 2017): 285. http://dx.doi.org/10.21930/rcta.vol18_num2_art:628.

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<p>Phytophthora cinnamomi Rands está asociado<br />con la pudrición radicular, una de las enfermedades<br />más importantes en el cultivo de aguacate<br />(Persea americana Mill.) debido a que ocasiona<br />marchitez progresiva hasta provocar la muerte del<br />árbol. El objetivo de este estudio fue identificar<br />molecularmente la presencia de P. cinnamomi con<br />la técnica PCR-RFLP, en plantaciones de aguacate<br />en dos zonas productoras del Ecuador. Con este<br />fin, se obtuvieron muestras de raíces de árboles con<br /&gt

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Alvarado, Laureano, Sebastián Saa, Italo F. Cuneo, Romina Pedreschi, Javiera Morales, Alejandra Larach, Wilson Barros, Jeannette Guajardo, and Ximena Besoain. "A Comparison of Immediate and Short-Term Defensive Responses to Phytophthora Species Infection in Both Susceptible and Resistant Walnut Rootstocks." Plant Disease 104, no. 3 (March 2020): 921–29. http://dx.doi.org/10.1094/pdis-03-19-0455-re.

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Clonal rootstocks are one alternative used by the walnut industry to control damage caused by Phytophthora species, traditionally using plants grafted on susceptible Juglans regia rootstock. Vlach, VX211, and RX1 are clonal rootstocks with a degree of resistance to Phytophthora species. The resistance to pathogens in these rootstocks depends on the resistance mechanisms activated by the presence of the pathogen and subsequent development of responses in the host. In this work, we analyzed how plants of J. regia, Vlach, VX211, and RX1 responded to inoculation with Phytophthora cinnamomi or Phyt

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Khdiar, Mohammed Y., Paul A. Barber, Giles E. StJ Hardy, Chris Shaw, Emma J. Steel, Cameron McMains, and Treena I. Burgess. "Association of Phytophthora with Declining Vegetation in an Urban Forest Environment." Microorganisms 8, no. 7 (June 29, 2020): 973. http://dx.doi.org/10.3390/microorganisms8070973.

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Urban forests consist of various environments from intensely managed spaces to conservation areas and are often reservoirs of a diverse range of invasive pathogens due to their introduction through the nursery trade. Pathogens are likely to persist because the urban forest contains a mixture of native and exotic plant species, and the environmental conditions are often less than ideal for the trees. To test the impact of different land management approaches on the Phytophthora community, 236 discrete soil and root samples were collected from declining trees in 91 parks and nature reserves in J

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Medeira, C., I. Maia, C. Ribeiro, I. Candeias, E. Melo, N. Sousa, and A. Cravador. "ALPHA CINNAMOMIN ELICITS A DEFENCE RESPONSE AGAINST PHYTOPHTHORA CINNAMOMI IN CASTANEA SATIVA." Acta Horticulturae, no. 940 (December 2012): 315–21. http://dx.doi.org/10.17660/actahortic.2012.940.45.

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Dai, Tingting, Aohua Wang, Xiao Yang, Xiaowei Yu, Wen Tian, Yue Xu, and Tao Hu. "PHYCI_587572: An RxLR Effector Gene and New Biomarker in A Recombinase Polymerase Amplification Assay for Rapid Detection of Phytophthora cinnamomi." Forests 11, no. 3 (March 11, 2020): 306. http://dx.doi.org/10.3390/f11030306.

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Phytophthora cinnamomi is a devastating pathogen causing root and crown rot and dieback diseases of nearly 5000 plant species. Accurate and rapid detection of P. cinnamomi plays a fundamental role within the current disease prevention and management programs. In this study, a novel effector gene PHYCI_587572 was found as unique to P. cinnamomi based on a comparative genomic analysis of 12 Phytophthora species. Its avirulence homolog protein 87 (Avh87) is characterized by the Arg-Xaa-Leu-Arg (RxLR) motif. Avh87 suppressed the pro-apoptotic protein BAX- and elicitin protein INF1-mediated cell de

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Barrett, S., B. L. Shearer, C. E. Crane, and A. Cochrane. "An extinction-risk assessment tool for flora threatened by Phytophthora cinnamomi." Australian Journal of Botany 56, no. 6 (2008): 477. http://dx.doi.org/10.1071/bt07213.

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A risk-assessment tool was used to investigate the risk of extinction from disease caused by Phytophthora cinnamomi to 33 taxa from the Stirling Range National Park, Western Australia. Criteria used to score risk of extinction were the direct impact of P. cinnamomi on taxa, number of extant or extinct populations, percentage of populations infested by P. cinnamomi, proximity and topographical relationship of populations to P. cinnamomi, proximity of populations to tracks and the number of additional threatening processes. Direct impact scores were derived from mortality curves determined from

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Barnard, E. L., C. E. Cordell, S. P. Gilly, and A. G. Kais. "Comparative Performance of Sand and Longleaf Pines on a Phytophthora Cinnamomi-Infested Sandhill in West Florida." Southern Journal of Applied Forestry 17, no. 2 (May 1, 1993): 90–95. http://dx.doi.org/10.1093/sjaf/17.2.90.

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Abstract Survival, but not growth, of Choctawhatchee sand pine exceeded that of Ocala sand pine on a Phytophthora cinnamomi-infested sandhill in west Florida. However, both varieties exhibited relatively high levels of susceptibility to root disease and mortality caused by P. cinnamomi. Longleaf pine survived significantly better than either variety of sand pine and exhibited an apparent resistance to infection by P. cinnamomi. South. J. Appl. For. 17(2):90-95.

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Midgley, Kayla A., Noëlani van den Berg, and Velushka Swart. "Unraveling Plant Cell Death during Phytophthora Infection." Microorganisms 10, no. 6 (May 31, 2022): 1139. http://dx.doi.org/10.3390/microorganisms10061139.

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Oomycetes form a distinct phylogenetic lineage of fungus-like eukaryotic microorganisms, of which several hundred organisms are considered among the most devastating plant pathogens—especially members of the genus Phytophthora. Phytophthora spp. have a large repertoire of effectors that aid in eliciting a susceptible response in host plants. What is of increasing interest is the involvement of Phytophthora effectors in regulating programed cell death (PCD)—in particular, the hypersensitive response. There have been numerous functional characterization studies, which demonstrate Phytophthora ef

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Westbrook, Jared W., Joseph B. James, Paul H. Sisco, John Frampton, Sunny Lucas, and Steven N. Jeffers. "Resistance toPhytophthora cinnamomiin American Chestnut (Castanea dentata) Backcross Populations that Descended from Two Chinese Chestnut (Castanea mollissima) Sources of Resistance." Plant Disease 103, no. 7 (July 2019): 1631–41. http://dx.doi.org/10.1094/pdis-11-18-1976-re.

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Restoration of American chestnut (Castanea dentata) depends on combining resistance to both the chestnut blight fungus (Cryphonectria parasitica) and Phytophthora cinnamomi, which causes Phytophthora root rot, in a diverse population of C. dentata. Over a 14-year period (2004 to 2017), survival and root health of American chestnut backcross seedlings after inoculation with P. cinnamomi were compared among 28 BC3, 66 BC4, and 389 BC3F3families that descended from two BC1trees (Clapper and Graves) with different Chinese chestnut grandparents. The 5% most resistant Graves BC3F3families survived P

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Boersma, J. G., D. E. L. Cooke, and K. Sivasithamparam. "A survey of wildflower farms in the south-west of Western Australia for Phytophthora spp. associated with root rots." Australian Journal of Experimental Agriculture 40, no. 7 (2000): 1011. http://dx.doi.org/10.1071/ea00013.

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A survey of wildflower farms in the south west of Western Australia, was conducted during spring of 1997 and autumn 1998 to determine the prevalence of Phytophthora infestations. Thirty-seven randomly selected farms ranging in size from 0.5 to =30 ha were visited. The main crop plants grown included species of Banksia, Boronia, Chamelaucium, Conospermum, Eucalyptus, Protea, and Leucadendron. Eighteen sites were found to have infestations of Phytophthora. Of these, 14 sites had P. cinnamomi, and 2 sites had P. cryptogea. P. cactorum, P. citricola and P. nicotianae were each found at only single

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