数字农科院2.0

Soybean steroids improve crop abiotic stress tolerance and increase yield

文献类型： 外文期刊

作者： Yu, Tai-Fei;Hou, Ze-Hao;Wang, Hai-Long;Chang, Shi-Yang;Song, Xin-Yuan;Zheng, Wei-Jun;Zheng, Lei;Wei, Ji-Tong;Lu, Zhi-Wei;Chen, Jun;Zhou, Yong-Bin;Chen, Ming;Sun, Su-Li;Jiang, Qi-Yan;Jin, Long-Guo;Ma, You-Zhi;Xu, Zhao-Shi

作者机构：

关键词： soybean (Glycine max);plant steroid hormone;abiotic stress;regulated mechanism;squalene monooxygenase

期刊名称： PLANT BIOTECHNOLOGY JOURNAL

ISSN： 1467-7644

年卷期： 2024 年

页码：

收录情况： SCIE（2024版）

摘要： Sterols have long been associated with diverse fields, such as cancer treatment, drug development, and plant growth; however, their underlying mechanisms and functions remain enigmatic. Here, we unveil a critical role played by a GmNF-YC9-mediated CCAAT-box transcription complex in modulating the steroid metabolism pathway within soybeans. Specifically, this complex directly activates squalene monooxygenase (GmSQE1), which is a rate-limiting enzyme in steroid synthesis. Our findings demonstrate that overexpression of either GmNF-YC9 or GmSQE1 significantly enhances soybean stress tolerance, while the inhibition of SQE weakens this tolerance. Field experiments conducted over two seasons further reveal increased yields per plant in both GmNF-YC9 and GmSQE1 overexpressing plants under drought stress conditions. This enhanced stress tolerance is attributed to the reduction of abiotic stress-induced cell oxidative damage. Transcriptome and metabolome analyses shed light on the upregulation of multiple sterol compounds, including fucosterol and soyasaponin II, in GmNF-YC9 and GmSQE1 overexpressing soybean plants under stress conditions. Intriguingly, the application of soybean steroids, including fucosterol and soyasaponin II, significantly improves drought tolerance in soybean, wheat, foxtail millet, and maize. These findings underscore the pivotal role of soybean steroids in countering oxidative stress in plants and offer a new research strategy for enhancing crop stress tolerance and quality from gene regulation to chemical intervention.

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