The AP2/EREBP family transcription factors play important roles in a wide range of stress tolerance and hormone signaling. In this study, a heat-inducible rice gene was isolated and functionally characterized. The was categorized to Group-IIIc of the rice AP2/EREBP family and strongly induced by heat and drought treatment. The OsERF115/AP2EREBP110 protein targeted to nuclei and suppressed the ABA-induced transcriptional activation of promoter in rice protoplasts. Overexpression of enhanced thermotolerance of seeds and vegetative growth stage plants. The overexpressing (OE) plants exhibited higher proline level and increased expression of a proline biosynthesis gene. Phenotyping of water use dynamics of the individual plant indicates that the -OE plant exhibited better water saving traits under heat and drought combined stress. Our combined results suggest the potential use of as a candidate gene for genetic engineering approaches to develop heat and drought stress-tolerant crops.
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| http://dx.doi.org/10.3390/ijms22137181 | DOI Listing |
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