Physiological and transcriptome analyses of Chinese cabbage in response to drought stress

作者：Lin Chen, Chao Li, Jiahao Zhang, Zongrui Li, Qi Zeng, Qingguo Sun, Xiaowu Wang, Limin Zhao, Lugang Zhang, Baohua Li · 发表于：Journal of Integrative Agriculture · 年份：2024 · DOI：10.1016/j.jia.2024.03.067 · 被引用次数：20 · 研究领域：Growth and nutrition in plants、Plant Stress Responses and Tolerance、Agronomic Practices and Intercropping Systems

Chinese cabbage is an important leafy vegetable crop with high water demand and susceptibility to drought stress. To explore the molecular mechanisms underlying the response to drought, we performed a transcriptome analysis of drought-tolerant and -sensitive Chinese cabbage genotypes under drought stress, and uncovered core drought-responsive genes and key signaling pathways. A co-expression network was constructed by a weighted gene co-expression network analysis (WGCNA) and candidate hub genes involved in drought tolerance were identified. Furthermore, ABA biosynthesis and signaling pathways and their drought responses in Chinese cabbage leaves were systemically explored. We also found that drought treatment increased the antioxidant enzyme activities and glucosinolate contents significantly. These results substantially enhance our understanding of the molecular mechanisms underlying drought responses in Chinese cabbage.