Results 41 to 50 of about 1,784 (181)

First report of the powdery mildew Podosphaera xanthii on Gynura bicolor [PDF]

open access: yesAustralasian Plant Disease Notes, 2015
In April–May 2015, powdery mildew was observed on stems and leaves of hongfengcai (Gynura bicolor), a perennial vegetable crop, in central Taiwan. Morphological and molecular characteristics determined this fungus as Podosphaera xanthii, which is reported on the plant genus Gynura for the first time.
Yuan-Min Shen   +3 more
openaire   +1 more source

Oidium longipes, a new powdery mildew fungus on petunia in the USA: A potential threat to ornamental and vegetable solanaceous crops [PDF]

open access: yes, 2008
This is the first North American report of Oidium longipes, an anamorphic powdery mildew species described recently in Europe. It was found on vegetatively propagated petunia grown in a commercial greenhouse in New Jersey, USA, where it caused a rapidly ...
Bolay A.   +11 more
core   +2 more sources

Essential oils: an alternative approach to management of powdery mildew diseases

open access: yesPhytopathologia Mediterranea, 2014
In recent years there has been growing interest in the application of plant-derived substances in agriculture as alternatives to the use of pesticides, in order to obtain healthy crops and more environmentally sustainable crop production systems.
Elena STURCHIO   +8 more
doaj   +1 more source

Positive involvement of HCO3– in modulation of melon resistance to powdery mildew

open access: yesVegetable Research, 2023
Inorganic salts such as KHCO3 are considered as potential powerful weapons for protecting plants from disease challenges, while their effects remain largely unknown on melon (Cucumis melo L.) resistance to powdery mildew caused by Podosphaera xanthii. In
Jianquan Wang   +6 more
doaj   +1 more source

New records of Erysiphales and Uredinales from Poland

open access: yesActa Mycologica, 2013
Puccinia mei-mamillata Semad. was found for the first time in Poland on Angelica sylvestris L., Neoerysiphe galeopsidis (DC.) U. Braun on Melittis melisophyllum L. and Podosphaera xanthii (Castagne) U. Braun & N. Shishkoff on Physalis alkekengi L.
Agata Wołczańska
doaj   +1 more source

Biological control of cucumber powdery mildew (Podosphaera xanthii) (Castagne) under greenhouse conditions

open access: yesEgyptian Journal of Biological Pest Control, 2020
Cucumber powdery mildew disease caused by Podosphaera xanthii (Castagne) U. Braun & Shishkoff severe disease-causing yield losses worldwide. This research study was conducted to evaluate the efficacy of the tested bio-agents, Trichoderma harzianum, T ...
Ehab A. D. Sarhan   +2 more
doaj   +1 more source

Molecular Strategies to Overcome Fungal Virulence in Crop Protection. [PDF]

open access: yesMicrob Biotechnol
Emerging biotechnological strategies to weaken the infective capacity of fungal pathogens without sole reliance on chemical agents. On the left, gene silencing via RNA interference (RNAi) targeting key developmental genes (such as MET6 and MsrA) leads to aberrant hyphal growth.
Molina-Santiago CA, Vela-Corcía D.
europepmc   +2 more sources

Identificación molecular de los tipos de compatibilidad en poblaciones de Podosphaera xanthii (Erysiphaceae) infectando cucurbitáceas en Veracruz, México

open access: yesActa Botanica Mexicana, 2022
Antecedentes y Objetivos: La fase sexual de Podosphaera xanthii, reconocida por la presencia de casmotecios, se ha observado esporádicamente. La ausencia de uno de los tipos de apareamiento o de compatibilidad (TC) MAT1-1 o MAT1-2, o una proporción ...
Dolores González   +1 more
doaj   +1 more source

Biological control of Podosphaera xanthii the causal agent of squash powdery mildew disease by upregulation of defense-related enzymes

open access: yesEgyptian Journal of Biological Pest Control, 2018
Squash (Cucurbita pepo L.), one of the most important vegetable crops for human nutrition all over the world, is infected by many diseases, particularly powdery mildew caused by Podosphaera xanthii (syn.
Yaser M. Hafez   +4 more
doaj   +1 more source

Occurrence of Powdery Mildew Caused by New Race 2F of Podosphaera xanthii on Cucumber in Korea

open access: yesResearch in Plant Disease, 2020
Powdery mildew is a common and serious disease of the Cucurbitaceae including cucumber (Cucumis sativus) in most areas of the world. To identify causal agents of the powdery mildew and their physiological race(s), we collected cucumber leaves displaying ...
Young-Ah Kim   +3 more
doaj   +1 more source

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