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基因是植物耐旱性的正调控因子。

Gene Is a Positive Regulator in Plant Drought Stress Tolerance.

作者信息

Chai Wenbo, Li Hongtao, Xu Hanyuan, Zhu Qing, Li Shufen, Yuan Chao, Ji Wei, Wang Jun, Sheng Lei

机构信息

Lianyungang Academy of Agricultural Sciences, Lianyungang 222006, China.

Anhui Academy of Agricultural Sciences, Hefei 230036, China.

出版信息

Biology (Basel). 2024 Jul 23;13(8):552. doi: 10.3390/biology13080552.

DOI:10.3390/biology13080552
PMID:39194490
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11351533/
Abstract

Improving drought tolerance in plants is essential for increasing crop yields under water-limited conditions. In this study, we investigated the functional role of the maize gene ZmDST44, which is targeted by the miRNA . Our results indicate that regulates ZmDST44 by cleaving its mRNA, as confirmed by inverse expression patterns and 5'-RACE analysis. Overexpression of ZmDST44 in Arabidopsis, rice, and maize resulted in significant enhancements in drought tolerance. Transgenic plants exhibited reduced malondialdehyde (MDA) levels, increased proline accumulation, and upregulation of drought-responsive genes compared to wild-type plants. Transgenic and rice showed improved drought resistance and higher post-drought recovery rates, and transgenic maize displayed lower sensitivity to drought stress. These findings suggest that ZmDST44 acts as a positive regulator of drought tolerance across different plant species and holds promise for developing drought-resistant crops through genetic engineering.

摘要

提高植物的耐旱性对于在水分有限的条件下提高作物产量至关重要。在本研究中，我们调查了受miRNA靶向的玉米基因ZmDST44的功能作用。我们的结果表明，通过切割其mRNA来调控ZmDST44，反向表达模式和5'-RACE分析证实了这一点。ZmDST44在拟南芥、水稻和玉米中的过表达导致耐旱性显著增强。与野生型植物相比，转基因植物表现出丙二醛（MDA）水平降低、脯氨酸积累增加以及干旱响应基因上调。转基因拟南芥和水稻表现出提高的抗旱性和更高的干旱后恢复率，转基因玉米对干旱胁迫的敏感性较低。这些发现表明，ZmDST44作为不同植物物种耐旱性的正向调节因子，有望通过基因工程培育抗旱作物。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8220/11351533/7b4dd73a72ba/biology-13-00552-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8220/11351533/6185be408c28/biology-13-00552-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8220/11351533/f87991a94ddc/biology-13-00552-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8220/11351533/b9ce9387ad70/biology-13-00552-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8220/11351533/2f764d2e41a7/biology-13-00552-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8220/11351533/7b4dd73a72ba/biology-13-00552-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8220/11351533/6185be408c28/biology-13-00552-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8220/11351533/f87991a94ddc/biology-13-00552-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8220/11351533/b9ce9387ad70/biology-13-00552-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8220/11351533/2f764d2e41a7/biology-13-00552-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8220/11351533/7b4dd73a72ba/biology-13-00552-g005.jpg

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The Maize ABA Receptors ZmPYL8, 9, and 12 Facilitate Plant Drought Resistance.玉米脱落酸受体ZmPYL8、9和12促进植物抗旱性。
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