Shiying Yu

Institute of Life Science, Jiyang College of Zhejiang A&F University, Zhuji, 311800, Zhejiang, China
Author    Correspondence author
International Journal of Molecular Evolution and Biodiversity, 2025, Vol. 15, No. 2   
Received: 07 Feb., 2025    Accepted: 12 Mar., 2025    Published: 25 Mar., 2025

This is an open access article published under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Rapeseed (Brassica napus L.) is an important oil crop worldwide, and its yield stability is often severely af-fected by drought stress. This study analyzed the key role of regulatory factors such as BnA.JAZ5 and BnaA6.RGA in the ABA signaling pathway, which regulate the expression of downstream genes and mediate the response to drought stress. Studies have shown that the activation or inhibition of these genes affects the plant's ability to adapt to adversity, reflecting its important position in the molecular regulatory network. At the physiological level, drought-tolerant varieties show a series of adaptive characteristics: not only can they maintain a high level of antioxidant enzyme activity and chlorophyll content, but they can also accumulate osmotic regulatory substances including proline and soluble sugars, thereby alleviating the adverse effects of water deficit. This physiological regulation mechanism enhances its ability to survive and grow in drought environments. With the rapid development of molecular biology technology, the analysis of drought re-sistance mechanisms is becoming more efficient and in-depth. Genome-wide association analysis (GWAS) combined with precise gene editing technologies such as CRISPR/Cas9 provides a powerful means for the rapid identification and utilization of key drought-resistant genes. This study provides a reference for inte-grating traditional breeding and molecular design technology to cultivate new drought-resistant varieties, es-pecially in improving water acquisition efficiency and regulating physiological balance.

Rapeseed (Brassica napus); Drought tolerance; ABA signaling; Genetic regulation; Enzymatic activity; Marker-assisted selection; Transcriptomics; Sustainable breeding