Physiological and Molecular Plant Pathology This is an RSS file. You can use it to subscribe to this data in your favourite RSS reader or to display this data on your own website or blog.

De novo transcriptome of Phakopsora pachyrhizi uncovers putative effector repertoire during infection
Publication date: Available online 23 January 2020Source: Physiological and Molecular Plant PathologyAuthor(s): Manjula G. Elmore, Sagnik Banerjee, Kerry F. Pedley, Amy Ruck, Steven A. WhithamAbstractPhakopsora pachyrhizi, which causes Asian soybean rust (ASR), secretes effector proteins to manipulate host immunity and promote disease. To date, only a small number of effectors have been identified from transcriptome studies. To obtain a more comprehensive understanding of P. pachyrhizi candidate secreted effector proteins (CSEPs), we sequenced the transcriptome using two next-generation sequencing technologies. Short-read ...
Source: Physiological and Molecular Plant Pathology - January 24, 2020 Category: Molecular Biology Source Type: research

Rearrangement of cell wall polymers in flax infected with a pathogenic strain of Fusarium culmorum
Publication date: Available online 22 January 2020Source: Physiological and Molecular Plant PathologyAuthor(s): Wioleta Wojtasik, Marta Preisner, Aleksandra Boba, Kamil Kostyn, Lucyna Dymińska, Jerzy Hanuza, Jan Szopa, Anna KulmaAbstractA pathogenic strain of Fusarium culmorum caused flax disease whose first visible symptom was pigmentation and possible necrosis of the root tip. To better understand the process of infection we tried to determine the role of cell wall polymers in flax treated with F. culmorum. F. culmorum infection caused cell wall rearrangement which was associated with changes in the cell wall structure ...
Source: Physiological and Molecular Plant Pathology - January 23, 2020 Category: Molecular Biology Source Type: research

Non-host resistance of arabidopsis and apple is associated with callose accumulation and changes in preinfective structures of Colletotrichum species
The objective of this work was to study the non-host resistance mechanisms involved in Arabidopsis thaliana and Malus domestica against Colletotrichum fructicola and Colletotrichum higginsianum, respectively. For this, the development of preinfective structures of Colletotrichum species, hypersensitivity responses and callose accumulation were monitored in host and non-host plants. Conidial germination and appressorial formation of Colletotrichum were affected on non-host leaf surfaces. Conidial germination and appressorial melanization of both Colletotrichum species occurred in a faster manner on arabidopsis than on apple...
Source: Physiological and Molecular Plant Pathology - January 23, 2020 Category: Molecular Biology Source Type: research

Overexpression of Brassica napus NPR1 enhances resistance to Sclerotinia sclerotiorum in oilseed rape
In this study, we cloned a new NPR1 homolog (BnaNPR1) from B. napus. The new cloned BnaNPR1 exhibits 68.35% identity with AtNPR1 in protein level, and its expression is strongly activated by the SA treatment that, in turn, can enhance resistance to S. sclerotiorum. Further, transgenic Nicotiana benthamiana and B. napus overexpressing BnaNPR1 showed significantly enhanced resistance to S. sclerotiorum. Further experiments showed that after S. sclerotiorum infection, transgenic plants activated the expression of genes associated with SA defense response but suppressed genes associated with JA signaling. These results indicat...
Source: Physiological and Molecular Plant Pathology - January 14, 2020 Category: Molecular Biology Source Type: research

Differential gene expression in foxtail millet during interaction with the smut fungus Ustilago crameri
Publication date: Available online 13 January 2020Source: Physiological and Molecular Plant PathologyAuthor(s): Lihong Hao, Jing Liu, Aiying Zhang, Yansha Han, Erhu Guo, Huilan YiAbstractFoxtail millet smut disease, which is caused by the basidiomycetous fungus Ustilago crameri, has become a severe detriment to millet production. However, little is known about the molecular responses of foxtail millet to infection with U. crameri. In this article, we performed RNA-Seq to investigate transcriptional modulation in the resistant cultivar Jigu20 and the susceptible cultivar Changnong35. In total, 1712 and 1166 differentially e...
Source: Physiological and Molecular Plant Pathology - January 14, 2020 Category: Molecular Biology Source Type: research

Isolation and molecular identification of Trichoderma species from wetland soil and their antagonistic activity against phytopathogens
Publication date: Available online 6 January 2020Source: Physiological and Molecular Plant PathologyAuthor(s): Kandasamy Saravanakumar, Myeong-Hyeon WangAbstractTrichoderma species are known to protect the plants from pathogen infections through multifunctions, such as secondary metabolism, mycoparasitism, hyperparasitism, nutrient competition, enzymes and induced systemic resistance (ISR). Herein, we isolated a total of 18 Trichoderma strains including nine species such as T. atroviride, T. virens, T. velutinum, T. harzianum, T. asperellum, T. koningiopsis, T. aureoviride, H. lixii, and T. koningii from the soils samples,...
Source: Physiological and Molecular Plant Pathology - January 8, 2020 Category: Molecular Biology Source Type: research

Coordination of multiple regulation pathways contributes to the tolerance of a wild citrus species (Citrus ichangensis ‘2586’) against Huanglongbing
In this study, we evaluated the symptom development and transcriptional differences among two wild citrus species, Citrus ichangensis ‘2586’ and C. daoxianensis, and the highly susceptible C. sinensis. No typical symptoms was observed and much less CLas accumulated in C. ichangensis, compared with C. daoxianensis and C. sinensis. Much greater number of differentially expressed genes were identified and pathways were perturbed in diseased C. sinensis, followed by diseased C. daoxianensis then C. sinensis. Many pathways including cell wall, secondary metabolism, stress responses, RNA transcriptional regulation and protei...
Source: Physiological and Molecular Plant Pathology - January 5, 2020 Category: Molecular Biology Source Type: research

Differentiation of Cherry leaf roll virus isolates from walnut based on molecular analyses and reaction of herbaceous hosts
Publication date: Available online 23 December 2019Source: Physiological and Molecular Plant PathologyAuthor(s): Mirosława CieślińskaAbstractWalnut orchards in main production areas of Poland were surveyed in spring-early summer 2009–2018 to determine the incidence of Cherry leaf roll virus (CLRV). The virus was detected by DAS-ELISA in 46 out of 348 samples. One-step RT-PCR confirmed the positive results of DAS-ELISA. Primer pair CLRV62-F/CLRV1482-R designed during this study based on RNA2 complete sequence of the CLRV strain 739 from Actinidia chinensis (accession number: KC937026), was used to amplify ∼1.4 kb f...
Source: Physiological and Molecular Plant Pathology - December 24, 2019 Category: Molecular Biology Source Type: research

Genetic and biochemical variations among sugar beet cultivars resistant to Cercospora leaf spot
Publication date: Available online 17 December 2019Source: Physiological and Molecular Plant PathologyAuthor(s): Bahaa E.S. Abd El-Fatah, Mohamed Hashem, Kamal A.M. Abo-Elyousr, Hadeel M.M. Khalil Bagy, Saad A.M. AlamriAbstractThe goal of the study was to construct a reliable molecular and biochemical tool for the selection of resistant sugar beet cultivars to minimize the loss in productivity caused by Cercospora leaf spot disease. Three PCR marker systems: inter simple sequence repeats (ISSR), and sequence-related amplified polymorphisms (SRAP), and random amplified polymorphic DNA (RAPD) were used to assess the genetic ...
Source: Physiological and Molecular Plant Pathology - December 18, 2019 Category: Molecular Biology Source Type: research

Investigating the effect of methyl jasmonate on the biocontrol activity of Meyerozyma guilliermondii against blue mold decay of apples and the possible mechanisms involved
Publication date: Available online 11 December 2019Source: Physiological and Molecular Plant PathologyAuthor(s): Fangtao He, Lina Zhao, Xiangfeng Zheng, Mandour H. Abdelhai, Nana Serwah Boateng, Xuhua Zhang, Hongyin ZhangAbstractApple is one of the largely grown fruits in China, and it suffers great economic losses caused by Penicillium expansum infection every year. In the present study, we ascertained the efficacy of Meyerozyma guilliermondii enhanced by 200 μmol/L methyl jasmonate (MeJA) in controlling the postharvest blue mold decay of apples and the possible mechanisms involved. The results demonstrated that the bi...
Source: Physiological and Molecular Plant Pathology - December 11, 2019 Category: Molecular Biology Source Type: research

Induction of apoplast phenolics in pepper (Capsicum annuum) leaves in response to pathogenic bacteria
The objective of this study was to corroborate, in pepper, the response of tobacco to induce apoplast phenolics upon bacterial inoculation. Leaves of Bell peppers (Capsicum annuum), 6–8 weeks old, were inoculated with bacteria and analyzed for apoplast phenolics after different periods of incubation. Pseudomonas syringae pv. tabacci, 108 cfu ml−1, induced numerous phenolics to accumulate in the leaf apoplast after 24h. UPLC-UV chromatograms revealed about 15 UV-peaks, some containing several components. Using this bacterial isolate, it was found that all the fully developed leaves on a single plant had a similar ph...
Source: Physiological and Molecular Plant Pathology - November 20, 2019 Category: Molecular Biology Source Type: research

New insights into the molecular basis of induced resistance triggered by potassium phosphite in potato
Publication date: Available online 12 November 2019Source: Physiological and Molecular Plant PathologyAuthor(s): Mariana Laura Feldman, María Carla Guzzo, Milagros Florencia Machinandiarena, María Florencia Rey-Burusco, María Verónica Beligni, Julio Di Rienzo, Martín Alfredo Castellote, Gustavo Raúl Daleo, Adriana Balbina AndreuAbstractThis work aimed to provide data about the molecules involved in induced resistance mediated by potassium phosphite (KPhi) in potato. To achieve these, we performed microarray analysis to determine the changes in gene expression after KPhi treatment, and their abundance after Phytophtho...
Source: Physiological and Molecular Plant Pathology - November 13, 2019 Category: Molecular Biology Source Type: research

Profile of the in vitro secretome of the barley net blotch fungus, Pyrenophora teres f. teres
Publication date: Available online 9 November 2019Source: Physiological and Molecular Plant PathologyAuthor(s): M. Jordi Muria-Gonzalez, Katherine Zulak, Eef Allegaert, Richard P. Oliver, Simon R. EllwoodAbstractPlant pathogen interactions are governed by a molecular interchange in which effectors, secreted by the pathogen, are key players. Effectors are yet to be characterised in Pyrenophora teres f. teres, an important pathogen of barley. Proteins contributing to culture filtrate phytotoxicity were identified by chromatographic fractionation followed by mass spectrometry-based proteomics. Among the most prevalent protein...
Source: Physiological and Molecular Plant Pathology - November 9, 2019 Category: Molecular Biology Source Type: research

Eicosapolyenoic fatty acids alter oxylipin gene expression and fatty acid hydroperoxide profiles in tomato and pepper roots
Publication date: Available online 4 November 2019Source: Physiological and Molecular Plant PathologyAuthor(s): Sara M. Dye, Jun Yang, Richard M. BostockAbstractEicosapolyenoic fatty acids (EP), such as arachidonic acid (AA), are abundant in oomycetes and can serve as microbe-associated molecular patterns (MAMPs) to elicit host defense responses. Solanaceous plants have multiple enzymes that convert EP into biologically active oxylipins. We evaluated expression of genes involved in oxylipin production in tomato and pepper seedlings with roots treated with AA and in tomato seedlings inoculated with Phytophthora capsici. AA ...
Source: Physiological and Molecular Plant Pathology - November 4, 2019 Category: Molecular Biology Source Type: research

Editorial Board
Publication date: December 2019Source: Physiological and Molecular Plant Pathology, Volume 108Author(s): (Source: Physiological and Molecular Plant Pathology)
Source: Physiological and Molecular Plant Pathology - November 1, 2019 Category: Molecular Biology Source Type: research