Divergent taxonomic and functional responses of microbial communities to field simulation of aeolian soil erosion and deposition
Divergent taxonomic and functional responses of microbial communities to field simulation of aeolian soil erosion and deposition
复制标题
微生物群落对风沙侵蚀和沉积现场模拟的不同分类和功能响应
DOI：
10.1111/mec.14194
复制
发表时间：
2017-08
影响因子：
4.9
通讯作者：
Yunfeng Yang
中科院分区：
文献类型：
--
作者：
Xingyu Ma;Cancan Zhao;Ying Gao;Bin Liu;Tengxu Wang;Tong Yuan;Lauren Hale;Joy D. Van Nostr;Shiqiang Wan;Jizhong Zhou;Yunfeng Yang
风沙侵蚀和沉积对世界范围内的农业、空气质量和公众健康都有影响。然而，在微生物方面，生态系统对土壤侵蚀和沉积的反应在很大程度上仍然不清楚，微生物是生物地球化学循环的关键驱动因素。利用集成的微基因组学技术，对内蒙古半干旱草原中国模拟土壤侵蚀和沉积条件下的微生物群落进行了分析。土壤侵蚀降低了土壤总有机碳和植被盖度，土壤沉积增加了土壤溶解有机碳(DOC)，验证了田间模拟的可靠性。土壤侵蚀和沉积都改变了土壤微生物群落(p<；039)，与土壤团聚体稳定性增加有关的蓝藻数量急剧增加。编码α-淀粉酶的AMYA基因因土壤沉积而显著增加(p=0.01)，并与DOC值呈正相关(p=0.02)，这可能解释了DOC值的变化。令人惊讶的是，大多数与碳、氮、磷和钾循环有关的微生物功能基因在侵蚀和沉积过程中都减少或没有改变，可能是由于有机质矿化的加速所致。这些不同的反应支持了在评估生态后果时纳入微生物成分的必要性。此外，Mantel测试表明，土壤养分与功能结构之间存在很强的显著相关性，但分类结构并不相关，这表明微生物功能特征与养分循环密切相关。
Aeolian soil erosion and deposition have worldwide impacts on agriculture, air quality and public health. However, ecosystem responses to soil erosion and deposition remain largely unclear in regard to microorganisms, which are the crucial drivers of biogeochemical cycles. Using integrated metagenomics technologies, we analysed microbial communities subjected to simulated soil erosion and deposition in a semiarid grassland of Inner Mongolia, China. As expected, soil total organic carbon and plant coverage were decreased by soil erosion, and soil dissolved organic carbon (DOC) was increased by soil deposition, demonstrating that field simulation was reliable. Soil microbial communities were altered (p < .039) by both soil erosion and deposition, with dramatic increase in Cyanobacteria related to increased stability in soil aggregates. amyA genes encoding α‐amylases were specifically increased (p = .01) by soil deposition and positively correlated (p = .02) to DOC, which likely explained changes in DOC. Surprisingly, most of microbial functional genes associated with carbon, nitrogen, phosphorus and potassium cycling were decreased or unaltered by both erosion and deposition, probably arising from acceleration of organic matter mineralization. These divergent responses support the necessity to include microbial components in evaluating ecological consequences. Furthermore, Mantel tests showed strong, significant correlations between soil nutrients and functional structure but not taxonomic structure, demonstrating close relevance of microbial function traits to nutrient cycling.
登录
查看更多内容
DOI：
10.1016/s0091-6749(97)70044-7
发表时间：
1997-03
期刊：
The Journal of Allergy and Clinical Immunology
影响因子：
--
作者：
R. Houba;P. Run;G. Doekes;D. Heederik;J. Spithoven
通讯作者：
R. Houba;P. Run;G. Doekes;D. Heederik;J. Spithoven
影响因子：
--
作者：
J. Kimble
通讯作者：
J. Kimble
DOI：
10.1016/j.ynpm.2011.07.111
发表时间：
2011
期刊：
--
影响因子：
--
作者：
J. Neu
通讯作者：
J. Neu
微生物介导的西藏草原表土碳储量影响机制
DOI：
10.1038/ismej.2015.19
发表时间：
2015-09
期刊：
The ISME journal
影响因子：
--
作者：
Yue H;Wang M;Wang S;Gilbert JA;Sun X;Wu L;Lin Q;Hu Y;Li X;He Z;Zhou J;Yang Y
通讯作者：
Yang Y
影响因子：
11
作者：
He, Zhili;Piceno, Yvette;Zhou, Jizhong
通讯作者：
Zhou, Jizhong