نتایج جستجو برای: golovinomyces cichoracearum

تعداد نتایج: 252  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه یاسوج - دانشکده کشاورزی 1391

سفیدک های پودری قارچ های انگل اجباری هستند که خسارت شدیدی به گیاهان وارد می آورند. به منظور شناسایی این قارچ ها در استان کهگیلویه و بویراحمد، از گیاهان بیمار در مناطق مختلف این استان نمونه برداری گردید. با مطالعه ی کنیدیوم ها، کنیدیوم برها، آسکوکارپ، آسک ها و آسکوسپورهای این قارچ ها و با استفاده از کلید معتبر شناسایی گونه های این قارچ ها، 20 گونه سفیدک پودری متعلق به 6 جنس blumeria، erysiphe،...

Journal: :Australasian Plant Disease Notes 2022

In March 2021, severe signs of powdery mildew were observed on leaves and stems Coccinia grandis in the Manchar, Pune District, Maharashtra state, India. Based morphological examination, phylogenetic analyses, pathogenicity test, causal agent was identified as Golovinomyces tabaci. To our knowledge, this is first record G. tabaci infecting C. Previously, had only been reported from Taiwan Thail...

Journal: :Botany 2021

We report the powdery mildew Golovinomyces ambrosiae for first time on silverleaf nightshade (Solanum azureum), a host plant endemic to northern Sinaloa and southern Sonora, Mexico. No teleomorph was observed, requiring fungal species be identified based morphological characteristics of anamorph. Phylogenetic analyses ITS region partial sequence β-tubulin gene from four specimens confirmed iden...

2007
Frank M. Dugan

Podosphaera (Sphaerotheca) euphorbiae on Euphorbia epithymoides (= E. polychroma, cushion spurge) is reported for the first time in North America. Neoerysiphe (Erysiphe) galeopsidis on Lamium amplexicaule (henbit), Blumeria (Erysiphe) graminis on Festuca idahoenis (Idaho fescue), Taphrina johansonii on Populus tremuloides (trembling aspen), and Taphrina occidentalis on Alnus rubra (red alder) a...

2010
Eva Křístková Vladimír Vinter

Introduction. Erysiphe cichoracearum /Ec/ is the predominating powdery mildew species on cucurbits in the Czech Republic (5). Its occurrence and spreading on cucurbits can be influenced not only by virulence, but also by aggressiveness of isolates within natural pathogen populations. Both forms of pathogenicity have an impact on plant cultivation and protection and should be considered in resis...

2014
Chang-Gi Back Gu-Youn Nam Seung-Yeol Lee Hee-Young Jung

From June to October 2012, severe outbreaks of rust disease on Solidago virgaurea var. gigantea were observed in 5 different regions of Ulleung-do, Korea. Typical rust symptoms appeared as yellow spots, uredinia on leaves, and massive urediniospores covering the entire plant. Severely infected plants became discolored and died. On the basis of its morphological and molecular characteristics, th...

Journal: :Molecular plant-microbe interactions : MPMI 2005
Andreas Freialdenhoven James Orme Thomas Lahaye Paul Schulze-Lefert

The Rar1 gene, identified in the context of race-specific powdery mildew resistance mediated by the Hordeum vulgare (barley) resistance (R) gene Mla12, is required for the function of many R-mediated defense responses in mono- and dicotyledonous plant species. Mla resistance is associated with an oxidative burst and a subsequent cell death reaction of attacked cells. Rar1 mutants are impaired i...

Journal: :Plant physiology 2009
Hyung Gon Mang Kristin A Laluk Eugene P Parsons Dylan K Kosma Bruce R Cooper Hyeong Cheol Park Synan AbuQamar Claudia Boccongelli Saori Miyazaki Federica Consiglio Gabriele Chilosi Hans J Bohnert Ray A Bressan Tesfaye Mengiste Matthew A Jenks

We report a role for the Arabidopsis (Arabidopsis thaliana) RESURRECTION1 (RST1) gene in plant defense. The rst1 mutant exhibits enhanced susceptibility to the biotrophic fungal pathogen Erysiphe cichoracearum but enhanced resistance to the necrotrophic fungal pathogens Botrytis cinerea and Alternaria brassicicola. RST1 encodes a novel protein that localizes to the plasma membrane and is predic...

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