The abiotic stress-responsive NAC transcription factor SlNAC11 is involved in drought and salt response in tomato (Solanum lycopersicum L.)

文献类型： 外文期刊

第一作者： Lingling Wang

作者： Lingling Wang;Chen, Guoping;Zongli Hu;Mingku Zhu;Zhiguo Zhu;Jingtao Hu;Ghulam Qanmber;Guoping Chen

作者机构：

关键词： Abiotic stress;Hormone;NAC;Transcription factor;SlNAC11;Tomato

期刊名称：PLANT CELL TISSUE AND ORGAN CULTURE （ 影响因子：2.711； 五年影响因子：2.73 ）

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收录情况： SCI

摘要： Plant-specific NAC (NAM/ATAF/CUC) transcription factors play crucial roles in diverse development processes as well as biotic and abiotic stress responses. Nevertheless, to date only few reports regarding stressrelated NAC genes are available in tomato. In this study, we isolated an abiotic stress-responsive NAC gene from tomato, here designated as SlNAC11. Expression analysis revealed that SlNAC11 was induced significantly by dehydration, cold, and heat. The functions of SlNAC11 in abiotic stress were further detected on SlNAC11-RNAi transgenic tomato plants. The results showed that SlNAC11-RNAi plants became less tolerant to drought and salt stress, which were demonstrated by lower level of chlorophyll content and seed germination rate, and higher level of MDA as compared to WT plants under stress conditions. Furthermore, transgenic seedlings exhibited less hypersensitive to ABA, demonstrated by longer hypocotyl and root as compared to WT plants. These results show that SlNAC11 functions as a stress-responsive transcription factor depicting positive response to abiotic stress tolerance and may hold promise for improving stress tolerance in transgenic tomato.

分类号： Q942

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