microrna399 is involved in multiple nutrients starvation responses in rice

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ID: 133989
2015
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Abstract
The increasing evidences have revealed that microRNAs (miRNAs) play significant role in nutrient stress response. Previously, miR399 was documented to be induced by phosphorus (P) starvation and involved in regulating P starvation responses. To further investigate the function of miR399 in rice (Oryza sativa L.), we performed GeneChip analysis with OsmiR399 over-expressing plants. Interestingly, our results showed that, besides P starvation responsive genes, the expression of a number of genes involved in iron (Fe), potassium (K), sodium (Na), and calcium (Ca) absorption was dramatically up-regulated in OsmiR399 over-expressing plants. Consistently, the concentrations of Fe, K, Na, and Ca were also increased in OsmiR399 over-expressing plants. The expression of OsmiR399 was also up-regulated by these nutrient starvations, respectively. Moreover, the loss-of-function of LTN1, the down-stream target of OsmiR399, also resulted in the increase of multiple metal elements and the up-regulation of the absorption related genes. These results indicated that OsmiR399 participates in the regulation of multiple nutrient starvation responses, which also gives new view on understanding the interaction among different nutrients mediated by miR399.
Reference Key
ehu2015frontiersmicrorna399 Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Bin eHu;Wei eWang;Wei eWang;Kun eDeng;Hua eLi;Hua eLi;Zhihua eZhang;Zhihua eZhang;Lianhe eZhang;Chengcai eChu
Journal phytochemistry letters
Year 2015
DOI
10.3389/fpls.2015.00188
URL
http://journal.frontiersin.org/Journal/10.3389/fpls.2015.00188/full
Keywords
gene expression rice

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