Virulence analysis of wheat powdery mildew population (Erysiphe graminis f.sp.tritici) from the region of Slovakia and Hungary

1993 ◽  
Vol 38 (6) ◽  
pp. 497-500 ◽  
Author(s):  
M. Švec ◽  
M. Miklovičová ◽  
M. Sýkora
Keyword(s):  
Powdery Mildew ◽  
Erysiphe Graminis ◽  
Wheat Powdery Mildew ◽  
Virulence Analysis

Changes in sterol composition with ontogeny of Blumeria graminis conidia

2000 ◽  
Vol 78 (10) ◽  
pp. 1288-1293 ◽  
Author(s):  
Jérôme Muchembled ◽  
Anissa Lounès-Hadj Sahraoui ◽  
Anne Grandmougin-Ferjani ◽  
Michel Sancholle
Keyword(s):  
Powdery Mildew ◽  
Plant Pathogen ◽  
Total Sterol ◽  
Sterol Composition ◽  
Blumeria Graminis ◽  
Erysiphe Graminis ◽  
Qualitative And Quantitative ◽  
Wheat Powdery Mildew

The total sterol composition of conidia of the obligate plant pathogen Blumeria (= Erysiphe) graminis f.sp. tritici has been analysed as a function of their ontogeny during sporulation. Two main classes of sterols were characterized: 24-ethylsterols (24-ethylcholesta-5,22-dienol, 24-ethylcholesterol, and Δ5-avenasterol) and 24-methylsterols (24-methylenecholesterol and episterol). Our results show that sterol composition is greatly modified during ontogeny of B. graminis conidia both at the qualitative and quantitative levels. In particular, 24-methylsterols, e.g., 24-methylenecholesterol and episterol, are the major sterols in old conidia whereas 24-ethylsterols, e.g., 24-ethylcholesta-5,22-dienol, 24-ethylcholesterol, and Δ5-avenasterol, are the main sterols in young conidia.Key words: Erysiphe, wheat powdery mildew, sterols, ontogeny.

scholarly journals Differential Reactions to Three Strains of Wheat Powdery Mildew (Erysiphe Graminis Var. Tritici)

1966 ◽  
Vol 19 (5) ◽  
pp. 767 ◽  
Author(s):  
RA Mcintosh ◽  
EP Baker
Keyword(s):  
Powdery Mildew ◽  
Erysiphe Graminis ◽  
Wheat Powdery Mildew ◽  
Triticum Species ◽  
Differential Set

The pathogenicity of three strains of wheat powdery mildew on certain Triticum species and cultivars is described. One of these strains is characterized by virulence' on the cultivar Asosan, previously resistant in Australian studies. Resistance, apparently genetically different from any already described, is recorded in two Australian cultivars. In view of the variability in pathogenicity revealed by these strains, the need for the establishment of an acceptable international differential set is emphasized.

scholarly journals Virulence Analysis of Wheat Powdery Mildew (Blumeria graminis f. sp. tritici) and Effective Genes in Middle Delta, Egypt

Plant Disease ◽  
2016 ◽  
Vol 100 (9) ◽  
pp. 1927-1930 ◽  
Author(s):  
Moustafa M. El-Shamy ◽  
Hassan M. Emara ◽  
Mona E. Mohamed
Keyword(s):  
Powdery Mildew ◽  
Adult Stage ◽  
Resistance Breeding ◽  
Blumeria Graminis ◽  
Wheat Cultivars ◽  
Natural Field ◽  
Wheat Powdery Mildew ◽  
Virulence Analysis ◽  
High Virulence ◽  
First Time

Wheat powdery mildew (Blumeria graminis f. sp. tritici) has increased in Delta Egypt in recent years as a result of growing susceptible cultivars of bread wheat. Fifty-two isolates of B. graminis f. sp. tritici collected in 2013 and 2014 from commercial fields in five provinces were analyzed for virulence, using 21 genes conferring resistance to powdery mildew (Pm genes) as well as 12 local wheat cultivars. First true leaves of 10-day-old wheat differentials were inoculated with isolates derived from a single pustule of B. graminis f. sp. tritici. No virulence to the resistance genes Pm3d, Pm12, Pm16, Pm24, Pm35, Pm36, and Pm37 was detected, indicating that these genes could be used for resistance breeding. Virulence to Pm2, Pm4a, and Pm6 was low, while high virulence to genes Pm1a, Pm3a, Pm3c, Pm3f, Pm5a, Pm7, Pm8, Pm9, and Pm17 was found, indicating that breeders should be very cautious in using these genes. At the adult stage, genes Pm2, Pm3d, Pm3f, Pm4a, Pm6, Pm12, Pm16, Pm17, Pm24, Pm35, Pm36, and Pm37 were completely effective in both years. All the tested Egyptian wheat cultivars were susceptible under natural field conditions. The virulence of B. graminis f. sp. tritici population and resistance Pm genes have been assessed for the first time in Egypt.

Cloning and Characterization of a Novel Wheat Glycoside Hydrolase Gene TaGlc2 Induced by Powdery Mildew Pathogen (Erysiphe graminis) Infection

2009 ◽  
Vol 35 (5) ◽  
pp. 786-794
Author(s):  
N PUDAKE Ramesh ◽  
Ming-Ming XIN ◽  
Yu-Jing YIN ◽  
Chao-Jie XIE ◽  
Zhong-Fu NI ◽  
...  
Keyword(s):  
Powdery Mildew ◽  
Glycoside Hydrolase ◽  
Erysiphe Graminis ◽  
Powdery Mildew Pathogen

Studies on the control effect of Bacillus subtilis on wheat powdery mildew

2021 ◽  
Author(s):  
Deshan Xie ◽  
Xuewei Cai ◽  
Chunping Yang ◽  
Linjun Xie ◽  
Guangwei Qin ◽  
...  
Keyword(s):  
Bacillus Subtilis ◽  
Powdery Mildew ◽  
Control Effect ◽  
Wheat Powdery Mildew

scholarly journals Analysis of Anti-interference Ability of Hyperspectral Sensitive Features to Wheat Powdery Mildew

2021 ◽  
Vol 693 (1) ◽  
pp. 012124
Author(s):  
Jinling Zhao ◽  
Guomin Chu ◽  
Hao Yan ◽  
Lei Hu ◽  
Yongan Xue
Keyword(s):  
Powdery Mildew ◽  
Wheat Powdery Mildew
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