Identification of a Novel Alternaria alternata Strain Able to Hyperparasitize Puccinia striiformis f. sp. tritici , the Causal Agent of Wheat Stripe Rust

The obligate bitrophic fungus f. sp. ( ) causes stripe (yellow) rust on wheat worldwide. Here, we report a novel fungal strain able to hyperparasitize . The strain was isolated from gray-colored rust pustules, and was identified as (Fr.: Fr.) keissler based on a combination of morphological characte...

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Bibliographic Details
Published in:Frontiers in microbiology 2017-01, Vol.8, p.71-71
Main Authors: Zheng, Li, Zhao, Jie, Liang, Xiaofei, Zhan, Gangming, Jiang, Shuchang, Kang, Zhensheng
Format: Article
Language:English
Subjects:
Microbiology
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Summary:The obligate bitrophic fungus f. sp. ( ) causes stripe (yellow) rust on wheat worldwide. Here, we report a novel fungal strain able to hyperparasitize . The strain was isolated from gray-colored rust pustules, and was identified as (Fr.: Fr.) keissler based on a combination of morphological characteristics and multi-locus (ITS, GAPDH, and RPB2) phylogeny. Upon artificial inoculation, the hyperparasite reduced the production and viability of urediniospores, and produced a typical gray-colored rust pustule symptom. Scanning electron microscopy demonstrated that the strain could efficiently penetrate and colonize urediniospores. This study first demonstrates that could parasitize and indicates its potential application in the biological control of wheat stripe rust disease.
ISSN:1664-302X
1664-302X
DOI:10.3389/fmicb.2017.00071