Journal
JOURNAL OF PHYTOPATHOLOGY
Volume 163, Issue 4, Pages 264-270Publisher
WILEY
DOI: 10.1111/jph.12315
Keywords
Bgt; gene expression regulators; microarray; miRNA; wheat
Categories
Funding
- Ministry of Education of China [20100204120024]
- Natural Science Foundation of China [31000913, 31372075]
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Wheat powdery mildew, caused by Blumeria graminis f. sp. tritici (Bgt), is one of the most consistently damaging diseases of common wheat worldwide and greatly affects crop productivity. Recently, several plant microRNAs (miRNAs) have been reported as gene expression regulators related to various adverse environments. However, up to now, less is known on the roles of miRNAs in powdery mildew infection response of wheat. In this study, miRNA expression patterns were investigated for identifying Bgt-responsive miRNAs in wheat leaves using a plant miRNA microarray platform. A total of 79 miRNAs from 24 families were detected in wheat leaves. Among those, seven miRNAs were further validated to be involved in wheat powdery mildew response and two of them have never been reported. In addition, their target expression profiles showed a negative correlation with that of the seven miRNAs in mock- and Bgt-infected samples furtherly proved, which in turn as the robust evidence, that those seven powdery mildew-responsive miRNAs are highly reliable. These findings could extend the current view about miRNAs as ubiquitous regulators under stress conditions.
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