期刊
PLANT SIGNALING & BEHAVIOR
卷 8, 期 10, 页码 -出版社
TAYLOR & FRANCIS INC
DOI: 10.4161/psb.26758
关键词
UV-B; microarray; miRNA; target mRNAs; Zea mays
资金
- FONCyT [PICT-2010-105, PICT-2012-267]
UV-B radiation elicits physiological and developmental changes in plants. In this work, to characterize the mechanisms of gene regulation by UV-B radiation, the global miRNA expression profiles in juvenile maize leaves were compared under control conditions in the absence of UV-B and after an 8 h-UV-B treatment similar to ambient UV-B levels using small RNA microarrays. Seventeen miRNAs were identified that were differentially expressed in response to UV-B. In parallel, the expression of putative mRNA targets was examined in mRNA microarrays using the same RNA samples used for the small RNA analysis. In general, there is a strong negative correlation to the miRNA expression. Thus, post-transcriptional regulation is an important step in gene expression by UV-B radiation in maize.
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