scholarly journals Corrigendum to: Enriched HeK4me3 marks at Pm-0 resistance-related genes prime courgette against Podosphaera xanthii

2021 ◽  
Author(s):  
Theoni Margaritopoulou ◽  
Dimosthenis Kizis ◽  
Dimitris Kotopoulis ◽  
Ioannis E Papadakis ◽  
Christos Anagnostopoulos ◽  
...  
Keyword(s):  
Podosphaera Xanthii

scholarly journals Transformation of the cucurbit powdery mildew pathogen Podosphaera xanthii by Agrobacterium tumefaciens

2016 ◽  
Vol 213 (4) ◽  
pp. 1961-1973 ◽  
Author(s):  
Jesús Martínez‐Cruz ◽  
Diego Romero ◽  
Antonio Vicente ◽  
Alejandro Pérez‐García
Keyword(s):  
Agrobacterium Tumefaciens ◽  
Powdery Mildew ◽  
Podosphaera Xanthii ◽  
Powdery Mildew Pathogen ◽  
Cucurbit Powdery Mildew

scholarly journals First report of powdery mildew caused by Podosphaera xanthii on Cucurbita maxima in Korea

2019 ◽  
Vol 102 (2) ◽  
pp. 599-599 ◽  
Author(s):  
In-Young Choi ◽  
Young-Joon Choi ◽  
Hyeon-Dong Shin
Keyword(s):  
Powdery Mildew ◽  
Podosphaera Xanthii ◽  
Cucurbita Maxima ◽  
First Report

scholarly journals First Report of Podosphaera xanthii Causing Powdery Mildew on Zinnia elegans in Taiwan

Plant Disease ◽  
2020 ◽  
Author(s):  
Yi-Ting Xiao ◽  
Yuan-Min Shen ◽  
Chao-Jen Wang ◽  
Tung-Ching Huang
Keyword(s):  
Powdery Mildew ◽  
Average Length ◽  
Zinnia Elegans ◽  
Flowering Plant ◽  
Tween 20 ◽  
Width Ratio ◽  
Podosphaera Xanthii ◽  
Bedding Plants ◽  
Taichung City ◽  
Voucher Specimens

Zinnia elegans L., known as common zinnia, is an annual flowering plant belonging to the Asteraceae family and native to North America. The plant has colorful flowers and is one of the popular ornamental bedding plants for gardening. In March 2020, powdery mildew symptoms were observed in a zinnia floral field with an incidence of >70% in Dacun Township, Changhua County, Taiwan. The symptoms were spotted on the stems, flower petals and leaves which appeared as irregular colonies and white patches on the surfaces. When disease progressed, most of the plant surfaces were covered by the white fungal colonies and became yellowish. Under microscopic examination, hyphal appressoria of the fungus were indistinct or slightly nipple-shaped. The conidiophores were unbranched, erect, straight, smooth to slightly rough, 75.0 to 200.0 × 10.0 to 15.0 µm (n=10), composed of a cylindrical, flexuous foot cell, 40.0 to 100.0 × 8.8 to 15.0 µm (n=10), and following 1 to 5 shorter cells. The conidia were ellipsoid to ovoid, 25.0 to 37.5 × 15.0 to 23.8 µm (n=60), with an average length-to-width ratio of 1.8 and contained fibrosin bodies. No chasmothecia were found. Three voucher specimens (TNM Nos. F0033680, F0033681, and F0033682) were deposited in the National Museum of Natural Science, Taichung City, Taiwan. To confirm the identification, the internal transcribed spacer (ITS) regions of the three specimens were amplified using primer pairs ITS1/PM6 and PM5/ITS4 (Shen et al. 2015) and sequenced from both ends. The resulting sequences were deposited in GenBank under Accession Nos. MT568609, MT568610, and MT568611. The sequences were identical to each other and shared a 100% identity with that of Podosphaera xanthii MUMH 338 on Z. elegans from Japan (Accession No. AB040355) (Ito and Takamatsu 2010) over a 475 bp alignment. Accordingly, the fungus was identified as P. xanthii (Castagne) U. Braun & Shishkoff (Braun and Cook 2012) based on its morphological and molecular characters. Pathogenicity was demonstrated through inoculation by gently pressing naturally infected leaves onto leaves of three healthy potted common zinnia that had been sprayed with 0.02% Tween 20. Additional three non-inoculated plants treated in the same way without inoculating the powdery mildew served as the controls. Powdery mildew colonies were observed on inoculated leaves after 10 days at room temperature, later the diseased leaves became yellowish and deteriorated. The morphological traits of the fungus on the inoculated leaves were similar to those of the first observed. In addition, the ITS sequence from a colony on the inoculated leaves was 100% identical to MT568609-MT568611, fulfilling the Koch’s postulates. All the controls remained symptomless. Z. elegans is known to be a host for different species of powdery mildew in the genus Erysiphe, Golovinomyces, and Podosphaera (Farr and Rossman 2020). In Taiwan, powdery mildew has been briefly reported on zinnia without detailed descriptions (Hsieh 1983). This study confirmed P. xanthii as a causal agent of powdery mildew in Taiwan and the awareness of the disease may benefit the floral industry. To our knowledge, this is the first confirmed report of P. xanthii on Z. elegans in Taiwan.

scholarly journals First Report of Powdery Mildew Caused by Podosphaera xanthii on Cucumis dipsaceus in China

Plant Disease ◽  
2020 ◽  
Vol 104 (3) ◽  
pp. 985-985
Author(s):  
Xuewen Xu ◽  
Xueli Liu ◽  
Ming Tan ◽  
Xiaohua Qi ◽  
Qiang Xu ◽  
...  
Keyword(s):  
Powdery Mildew ◽  
Podosphaera Xanthii ◽  
First Report

Histological aspects of Cucumis melo PI 313970 resistance to Podosphaera xanthii and Golovinomyces cichoracearum

2009 ◽  
Vol 116 (4) ◽  
pp. 169-176 ◽  
Author(s):  
M. Sedlá ◽  
A. Lebeda ◽  
P. Mikšíková ◽  
M. Duchoslav ◽  
B. Sedláková ◽  
...  
Keyword(s):  
Cucumis Melo ◽  
Podosphaera Xanthii ◽  
Golovinomyces Cichoracearum

scholarly journals ‘Carmen’, a Yellow Canary Melon Breeding Line Resistant to Podosphaera xanthii, Aphis gossypii, and Cucurbit Yellow Stunting Disorder Virus

HortScience ◽  
2018 ◽  
Vol 53 (7) ◽  
pp. 1072-1075 ◽  
Author(s):  
Francisco Javier Palomares-Rius ◽  
Ana Garcés-Claver ◽  
María Belén Picó ◽  
Cristina Esteras ◽  
Fernando Juan Yuste-Lisbona ◽  
...  
Keyword(s):  
Aphis Gossypii ◽  
Podosphaera Xanthii ◽  
Breeding Line
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