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- Title
Submergence-responsive MicroRNAs are Potentially Involved in the Regulation of Morphological and Metabolic Adaptations in Maize Root Cells.
- Authors
Zuxin Zhang; Liya Wei; Xilin Zou; Yongsheng Tao; Zhijie Liu; Yonglian Zheng
- Abstract
Background and Aims Anaerobic or low oxygen conditions occur when maize plants are submerged or subjected to flooding of the soil. Maize survival under low oxygen conditions is largely dependent on metabolic, physiological and morphological adaptation strategies; the regulation mechanisms of which remain unknown. MicroRNAs (miRNAs) play critical roles in the response to adverse biotic or abiotic stresses at the post-transcriptional level. The aim of this study was to understand submergence-responsive miRNAs and their potential roles in submerged maize roots. Methods A custom μParaflo™ microfluidic array containing plant miRNA (miRBase: http://microrna.sanger.ac.uk) probes was used to explore differentially expressed miRNAs. Small RNAs from treated roots were hybridized with the microarray. The targets and their cis-acting elements of small RNA were predicted and analysed by RT-PCR. Key Results Microarray data revealed that the expression levels of 39 miRNAs from nine maize and some other plant miRNA families were significantly altered (P cis-acting element, which is essential for the anaerobic response or hormone induction. Conclusions Submergence-responsive miRNAs are involved in the regulation of metabolic, physiological and morphological adaptations of maize roots at the post-transcriptional level.
- Subjects
NON-coding RNA; PLANT roots; CORN genetics; PLANT adaptation; PHYSIOLOGICAL stress; MOLECULAR probes
- Publication
Annals of Botany, 2008, Vol 102, Issue 4, p509
- ISSN
0305-7364
- Publication type
Article
- DOI
10.1093/aob/mcn129