RNA-seq unveils pathways for drought and salinity resilience in Egyptian rice Sakha 102

文献类型： 外文期刊

第一作者： Hazman, Mohamed

作者： Hazman, Mohamed;Hazman, Mohamed;Guo, Longbiao;Tong, Hanhua;Fawzy, Samer;Anis, Galal;Elsherif, Ahmed;Riemann, Michael;Nick, Peter

作者机构：

关键词： Rice; Drought; Salinity; RNA-seq

期刊名称：PLANT GROWTH REGULATION （ 影响因子：3.9； 五年影响因子：3.8 ）

ISSN： 0167-6903

年卷期： 2025 年

页码：

收录情况： SCI

摘要： Refining stress-specific and communal adaptive mechanisms for drought and salinity is fundamental for developing resilient rice lines efficiently adapting arid or semi-amid agroecosystems. RNAseq profiling of Egyptian rice cultivar Sakha 102 seedlings subjected to osmo-equivalent doses of mannitol and NaCl showed a 24.7% overlap in differentially expressed genes (DEGs) between osmotic and salinity stresses, with 47% of DEGs unique to osmotic stress and 3.6% specific to salinity. Drought specifically upregulates genes like hexokinase I (involved in sugar sensing) and leaf trichome cell wall strengthening, whereas salinity stress activates signaling genes, including Cysteine-Rich Receptor-Like Protein Kinases and the cytoplasmic kinase RLCK223. Additionally, both stresses induce common genes such as chlorine channel I and inorganic phosphate transporter 1-5. Importantly, the downregulated genes network seemed to offer valuable complementary strategies focusing on the prioritizing of certain adaptive energy-trade off mechanism over growth. We proposed a model illustrating some distinct and overlapping molecular adaptive responses in the rice cultivar Sakha 102. We propose considering suggested results to improve stress-specific breeding and precision genome editing programs (ex: CRISPR-base genome editing) for developing efficient stress-resilient rice varieties.

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