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Rice transcription factor AP37 involved in grain yield increase under drought stress - PubMed

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Rice transcription factor AP37 involved in grain yield increase under drought stress

Youn Shic Kim et al. Plant Signal Behav. 2009 Aug.

Abstract

Drought is a serious threat to the sustainability of rice yields in rainfed agriculture. In particular, exposure to drought conditions during the stage of panicle development of a rice plant results in a delayed flowering time, reduced number of spikelets and poor grain filling. In our recent report, we functionally characterized the rice AP37 gene for drought tolerance during the vegetative and reproductive growth. Transgenic overexpression of the AP37 with the OsCc1 promoter in rice increased the tolerance to drought, high salinity and low temperature at the vegetative stage. The transgenic plants OsCc1:AP37 also showed significantly enhanced drought tolerance at the reproductive stage, as evidenced by the increase in grain yield by 16-57% over controls under severe field drought conditions. Thus, our results suggest that the AP37 gene has the potential to improve drought tolerance without causing undesirable growth phenotypes.

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Overexpression of the transcription factor AP37 in rice improves grain yield under drought conditions.
Oh SJ, Kim YS, Kwon CW, Park HK, Jeong JS, Kim JK. Oh SJ, et al. Plant Physiol. 2009 Jul;150(3):1368-79. doi: 10.1104/pp.109.137554. Epub 2009 May 8. Plant Physiol. 2009. PMID: 19429605 Free PMC article.

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Rice transcription factor AP37 involved in grain yield increase under drought stress - PubMed