Shang Jin-Long, Xie Yong-Xue, Shi Lu-Yao, Diao Shuo-Ren, Guan Jin-Yan
Xinjiang Key Laboratory of Special Species Conservation and Regulatory Biology, College of Life Science, Xinjiang Normal University, Urumqi 830054, China.
College of Chemistry and Chemical Engineering, Xinjiang Normal University, Urumqi 830054, China.
Plants (Basel). 2025 May 22;14(11):1582. doi: 10.3390/plants14111582.
, a filamentous cyanobacterium inhabiting desert biological soil crusts (BSCs), has developed exceptional strategies to endure extreme environmental stresses, including severe desiccation, intense ultraviolet (UV) radiation, and drastic temperature fluctuations. These organisms must effectively sense and predict environmental changes, particularly the onset of desiccation. This review explores recent advancements in the molecular mechanisms that enable to survive under such harsh conditions, with a focus on stress signal sensing, transduction pathways, and photosynthetic adjustments. Key molecular adaptations include the production of extracellular polysaccharide (EPS) sheaths for water retention, the accumulation of compatible solutes like trehalose, and the synthesis of UV-absorbing compounds such as scytonemin and mycosporine-like amino acids (MAAs). Furthermore, utilizes a complex signal transduction network, including light-sensing pathways, to regulate responses to rehydration and desiccation cycles. This review emphasizes the integrative nature of 's adaptive mechanisms and highlights their potential for biotechnological applications, such as enhancing drought tolerance in crops and advancing ecological restoration in arid regions.
一种栖息于沙漠生物土壤结皮（BSCs）中的丝状蓝细菌，已经形成了非凡的策略来耐受极端环境压力，包括严重干旱、强烈紫外线（UV）辐射和剧烈温度波动。这些生物体必须有效地感知和预测环境变化，尤其是干旱的开始。本综述探讨了使[具体名称未给出]能够在如此恶劣条件下生存的分子机制的最新进展，重点关注应激信号感知、转导途径和光合调节。关键的分子适应包括产生用于保水的细胞外多糖（EPS）鞘、积累如海藻糖等相容性溶质，以及合成如scytonemin和类菌孢素氨基酸（MAAs）等紫外线吸收化合物。此外，[具体名称未给出]利用一个复杂的信号转导网络，包括光感知途径，来调节对再水化和干燥循环的反应。本综述强调了[具体名称未给出]适应机制的综合性，并突出了它们在生物技术应用中的潜力，如提高作物的耐旱性和推进干旱地区的生态恢复。
