Transcriptome Regulation Mechanisms Difference between Female and Male Buchloe dactyloides in Response to Drought Stress and Rehydration

• Published in: International journal of molecular sciences Vol. 25; no. 17; p. 9653
• Main Authors: Liu, Muye, Su, Yalan, Teng, Ke, Fan, Xifeng, Yue, Yueseng, Xiao, Guozeng, Liu, Lingyun
• Format: Journal Article
• Language: English
• Published: Switzerland MDPI AG 06.09.2024
• Subjects: Biosynthesis; Buchloe dactyloides; Chlorophyll; dioecious; Drought; drought stress; Droughts; Females; Gender differences; Gene Expression Profiling; Gene Expression Regulation, Plant; Males; Metabolism; Morphogenesis; Physiology; Poaceae - genetics; Poaceae - physiology; Proteins; Sexes; Signal transduction; Signal Transduction - genetics; Stress, Physiological - genetics; Transcriptome; WGCNA; Buchloe dactyloides; drought stress; dioecious; WGCNA; transcriptome
• ISSN: 1422-0067; 1661-6596; 1422-0067
• DOI: 10.3390/ijms25179653

Drought, a pervasive global challenge, significantly hampers plant growth and crop yields, with drought stress being a primary inhibitor. Among resilient species, , a warm-season and dioecious turfgrass, stands out for its strong drought resistance and minimal maintenance requirements, making it a favored choice in ecological management and landscaping. However, there is limited research on the physiological and molecular differences in drought resistance between male and female To decipher the transcriptional regulation dynamics of these sexes in response to drought, RNA-sequencing analysis was conducted using the 'Texoka' cultivar as a model. A 14-day natural drought treatment, followed by a 7-day rewatering period, was applied. Notably, distinct physiological responses emerged between genders during and post-drought, accompanied by a more pronounced differential expression of genes (DEGs) in females compared to males. Further, KEGG and GO enrichment analysis revealed different DEGs enrichment pathways of in response to drought stress. Analysis of the biosynthesis and signaling transduction pathways showed that drought stress significantly enhanced the biosynthesis and signaling pathway of ABA in both female and male plants, contrasting with the suppression of IAA and JA pathways. Also, we discovered as a potential enhancer of drought tolerance in yeast, highlighting novel mechanisms. This study demonstrated the physiological and molecular mechanisms differences between male and female in response to drought stress, providing a theoretical basis for the corresponding application of female and male Additionally, it enriches our understanding of drought resistance mechanisms in dioecious plants, opening avenues for future research and genetic improvement.