Genome-wide identification of microRNAs in response to low nitrate availability in maize leaves and roots.

ABSTRACT:

Background

Nitrate is the major source of nitrogen available for many crop plants and is often the limiting factor for plant growth and agricultural productivity especially for maize. Many studies have been done identifying the transcriptome changes under low nitrate conditions. However, the microRNAs (miRNAs) varied under nitrate limiting conditions in maize has not been reported. MiRNAs play important roles in abiotic stress responses and nutrient deprivation.

Methodology/principal findings

In this study, we used the SmartArray™ and GeneChip® microarray systems to perform a genome-wide search to detect miRNAs responding to the chronic and transient nitrate limiting conditions in maize. Nine miRNA families (miR164, miR169, miR172, miR397, miR398, miR399, miR408, miR528, and

SUBMITTER: Xu Z 

PROVIDER: S-EPMC3223196 | biostudies-literature | 2011

REPOSITORIES: biostudies-literature