Variations of Bacterial Community Diversity Within the Rhizosphere of Three Phylogenetically Related Perennial Shrub Plant Species Across Environmental Gradients.
Variations of Bacterial Community Diversity Within the Rhizosphere of Three Phylogenetically Related Perennial Shrub Plant Species Across Environmental Gradients.
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三种系统发育相关的多年生灌木植物根际细菌群落多样性随环境梯度的变化
DOI：
10.3389/fmicb.2018.00709
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发表时间：
2018
影响因子：
5.2
通讯作者：
Ma F
中科院分区：
文献类型：
--
作者：
Na X;Xu T;Li M;Zhou Z;Ma S;Wang J;He J;Jiao B;Ma F
呼吸圈微生物群落对调节全球生态地球化学循环、植物生长和适应性具有重要意义。然而，驱动其组装的过程仍不清楚。多年生灌木锦鸡儿属，根际微生物群落地理学是研究自然生态系统根际微生物群落地理学的理想体系。为了研究锦鸡儿根际细菌群落的多样性和组成，对3种锦鸡儿属植物，小叶锦鸡儿，C. liouana Zhao和C. Korshinskii Kom.，对分布于我国北方干旱半干旱地区的10种主要牧草进行了调查。从物种来看，变形菌门（61.1%）、放线菌门（16.0%）、厚壁菌门（8.6%）、拟杆菌门（3.0%）、酸杆菌门（3.5%）、芽单胞菌门（1.4%）和蓝细菌门（1.0%）是3种锦鸡儿根际的最优势门。根际蓝藻相对丰度显著高于对照。红松科与C.小叶藓和C. liouana Zhao的根际细菌中，gammatimonadetes的根际细菌中。小叶藓相对于C. liouana Zhao.多元线性逐步回归分析表明，根际细菌群落的多样性和丰富度与土壤pH值呈极显著正相关（p < 0.01）。基于距离的冗余度分析表明，土壤性质和非土壤参数共同解释了细菌系统发育结构变异的47.5%（p < 0.01）。土壤全磷对群落结构变异的贡献率最大（9.7%，p < 0.01），其次是电导率（6.5%，p <0.05）、海拔（5.8%，p <0.05）、土壤pH（5.4%，p <0.05）、年平均降水量（3.6%，p < 0.05）和全氮（3.6%，p < 0.05）。此外，部分Mantel检验表明，根际细菌群落结构与地理距离显著相关，表明地理距离越近的样地，根际细菌群落结构越相似。我们的研究结果揭示了长寿植物及其根际细菌群落在不同环境梯度下的协同进化和相互作用机制。
Rhizosphere microbial communities are of great importance to mediate global biogeochemical cycles, plant growth, and fitness. Yet, the processes that drive their assembly remain unclear. The perennial shrubs Caragana spp., which is well known for their role in soil and water conservation, provides an ideal system to study the biogeography of rhizosphere microorganism communities within natural ecosystems. In order to detect how bacterial rhizosphere communities vary in terms of community diversity and composition, the rhizosphere bacterial community of three Caragana species, Caragana microphylla Lam., C. liouana Zhao, and C. korshinskii Kom., which distributed in arid and semi-arid region of northern China were investigated. Across species, Proteobacteria (61.1%), Actinobacteria (16.0%), Firmicutes (8.6%), Bacteroidetes (3.0%), Acidobacteria (3.5%), Gemmatimonadetes (1.4%), and Cyanobacteria (1.0%) were the most dominant phyla in the rhizosphere of the three Caragana species. The relative abundance of Cyanobacteria was significantly higher in rhizosphere of C. korshinskii Kom. compared with C. microphylla Lam. and C. liouana Zhao, while the opposite was found for Gemmatimonadetes in rhizosphere of C. microphylla Lam. relative to C. liouana Zhao. Stepwise multiple linear regression analysis showed that both diversity and richness of the bacterial rhizosphere communities significantly and positively correlated with soil pH (p < 0.01). Distance-based redundancy analysis indicated that soil properties and non-soil parameters detected there accounted for 47.5% of bacterial phylogenetic structure variation (p < 0.01) all together. Meanwhile, soil total phosphorus accounted for the greatest proportion of community structure variance (9.7%, p < 0.01), followed by electrical conduction (6.5%), altitude (5.8%), soil pH (5.4%), mean annual precipitation (3.6%) and total nitrogen (3.6%, p < 0.05 in all cases). Furthermore, partial Mantel test suggested that bacterial rhizosphere community structure significantly correlated with geographical distance, indicating that the less geographical distant sample sites tend to harbor more similar bacterial rhizosphere community. Our results shed new light on the mechanisms of coevolution and interaction between long-lived plants and their rhizosphere bacterial communities across environmental gradients.
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DOI：
10.2136/sssaj1983.03615995004700010009x
发表时间：
1983-01-01
影响因子：
2.9
作者：
HARTER, RD
通讯作者：
HARTER, RD
裂纹尖端的原子观察到接近相干双重边界的原子观察。
影响因子：
4.6
作者：
Liu L;Wang J;Gong SK;Mao SX
通讯作者：
Mao SX
影响因子：
9.7
作者：
Ilstedt, U;Singh, S
通讯作者：
Singh, S
影响因子：
4.4
作者：
Lauber, Christian L.;Hamady, Micah;Fierer, Noah
通讯作者：
Fierer, Noah
影响因子：
9.7
作者：
Ibekwe, A. M.;Poss, J. A.;Suarez, D.
通讯作者：
Suarez, D.