Sun Xiao, Pei Jin, Zhao Lei, Ahmad Bashir, Huang Lin-Fang
Key Laboratory of Chinese Medicine Resources Conservation, State Administration of Traditional Chinese Medicine of China, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, 100193, China.
State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu, Sichuan, 611137, China.
Environ Microbiol. 2021 Nov;23(11):6876-6894. doi: 10.1111/1462-2920.15799. Epub 2021 Oct 24.
Global warming has exacerbated desertification in arid regions. Exploring the environmental variables and microbial communities that drive the dynamics of geographic patterns of desert crops is important for large-scale standardization of crops that can control desertification. Here, predictions based on future climate data from CMIP6 show that a steady expand in the suitable production areas for three desert plants (Cistanche deserticola, Cynomorium songaricum and Cistanche salsa) under global warming, demonstrating their high adaptability to future climate change. We examined the biogeography of three desert plant soil bacteria communities and assessed the environmental factors affecting the community assembly process. The α-diversity significantly decreased along elevated latitudes, indicating that the soil bacterial communities of the three species have latitude diversity patterns. The neutral community model evaluated 66.6% of the explained variance of the bacterial community in the soil of desert plants and Modified Stochasticity Ratio <0.5, suggesting that deterministic processes dominate the assembly of bacterial communities in three desert plants. Moreover, topography (longitude, elevation) and precipitation as well as key OTUs (OTU4911: Streptomyces eurythermus and OTU4672: Streptomyces flaveus) drive the colonization of three desert plants. This research offers a promising solution for desert management in arid areas under global warming.
全球变暖加剧了干旱地区的荒漠化。探索驱动沙漠作物地理格局动态变化的环境变量和微生物群落，对于能够控制荒漠化的作物大规模标准化种植具有重要意义。在此，基于CMIP6未来气候数据的预测表明，在全球变暖的情况下，三种沙漠植物（肉苁蓉、锁阳和盐生肉苁蓉）的适宜种植面积将稳步扩大，这表明它们对未来气候变化具有高度适应性。我们研究了三种沙漠植物土壤细菌群落的生物地理学，并评估了影响群落组装过程的环境因素。α多样性沿纬度升高显著降低，表明这三种植物的土壤细菌群落具有纬度多样性模式。中性群落模型评估了沙漠植物土壤中细菌群落66.6%的可解释变异，且修正随机性比率<0.5，这表明确定性过程主导了三种沙漠植物细菌群落的组装。此外，地形（经度、海拔）、降水以及关键OTU（OTU4911：广温链霉菌和OTU4672：黄色链霉菌）驱动了三种沙漠植物的定殖。本研究为全球变暖下干旱地区的沙漠治理提供了一个有前景的解决方案。
