Journal
SEMINARS IN CELL & DEVELOPMENTAL BIOLOGY
Volume 21, Issue 8, Pages 805-811Publisher
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.semcdb.2010.04.001
Keywords
Abiotic stress; MicroRNAs; Nutrient-deprivation; Plant stress tolerance; Small RNAs
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Funding
- USDA NRI [2007-02019]
- NSF-EPSCoR [EPS0814361]
- Oklahoma Agricultural Experiment Station
- EPSCoR [0814361] Funding Source: National Science Foundation
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Being sessile organisms, plants often have to face challenges posed by environmental stresses. To minimize the cellular damage caused by stress, plants have evolved highly complex but well-coordinated adaptive responses operating at the transcriptional, post-transcriptional, translational and post-translational levels. A thorough understanding of regulation at all levels will provide better tools to improve plant's performance under stress. Dramatic changes in the levels of several hundreds or even thousands of mRNAs/proteins were evident under stress as revealed by high-throughput microarray and proteome analyses and such changes were thought to be dependent on transcriptional (induction or suppression of genes) or post-translational regulation (protein stability and degradation). However, recently discovered 21-24 nt small RNAs (microRNAs [miRNAs] and small-interfering RNAs [siRNAs]), which regulate gene expression at the post-transcriptional level, are also modulated during stress and possibly contribute to the stress-induced changes in profiles of mRNAs or proteins. This review highlights our understanding of the role of small RNAs in plant stress responses. (C) 2010 Elsevier Ltd. All rights reserved.
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