Co-symbiosis of arbuscular mycorrhizal fungi (AMF) and diazotrophs promote biological nitrogen fixation in mangrove ecosystems
Co-symbiosis of arbuscular mycorrhizal fungi (AMF) and diazotrophs promote biological nitrogen fixation in mangrove ecosystems
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丛枝菌根真菌（AMF）和固氮菌的共生促进红树林生态系统的生物固氮
DOI：
10.1016/j.soilbio.2021.108382
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发表时间：
2021-10
影响因子：
9.7
通讯作者：
Qingyun Yan
中科院分区：
文献类型：
--
作者：
Huang Yu;Xingyu Liu;Chao Yang;Yisheng Peng;Xiaoli Yu;Hang Gu;Xiafei Zheng;Cheng Wang;Fanshu Xiao;Longfei Shu;Zhili He;Bo Wu;Qingyun Yan
Nitrogen (N) is the most critical nutrient that affects the establishment and stability of mangrove ecosystems. Despite the importance of biological nitrogen fixation (BNF) mediated by diazotrophs in mangrove ecosystems, current studies largely overlook the influence of arbuscular mycorrhizal fungi (AMF) on diazotrophs-driven BNF process in the N-limited ecosystems. Here, we conducted a comprehensive study on root-associated AMF and their interspecific interactions with diazotrophs in mangrove ecosystems using high throughput sequencing methods. Our results showed that the richness/diversity of diazotrophs had significant positive correlations with AMF community in mangrove rhizosphere. BNF rate in the rhizosphere of all mangrove species increased with the increasing of positive co-occurrence between AMF and diazotrophs, suggesting that the positive cooperation may promote N fixation efficiency in mangrove ecosystems. We also identified the potential keystone taxa (Zi≥ 2.5 orPi≥ 0.62) and determined their crucial implications for the ecological processes of N fixation in mangrove ecosystems. The random forest analysis further indicated that the AMF keystone taxa were the most important predictors of BNF in mangrove rhizosphere. In addition, path analysis indicated that the α-diversity of AMF and diazotrophs communities, N-related enzymes and sediment nutrition components (e.g., TC, TN, Fe) were the main factors driving BNF process in mangrove ecosystems. This study provides novel insights into the interactions between AMF and diazotrophic communities during BNF process and expands our knowledge of AMF ecological functions of N cycle in mangrove ecosystems.
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影响因子：
4.9
作者：
Allana Welsh;D. Burke;E. Hamerlynck;D. Hahn
通讯作者：
Allana Welsh;D. Burke;E. Hamerlynck;D. Hahn
土壤pH是青藏高寒草甸土壤固氮群落聚集的主要驱动因素
影响因子：
9.7
作者：
Yansu Wang;Chaonan Li;Yongping Kou;Jianjun Wang;Bo Tu;Huan Li;Xiangzhen Li;Changting Wang;Minjie Yao
通讯作者：
Minjie Yao
影响因子：
4.2
作者：
Han, Li-Li;Wang, Qing;He, Ji-Zheng
通讯作者：
He, Ji-Zheng
影响因子：
5.8
作者：
Scott Fortmann-Roe
通讯作者：
Scott Fortmann-Roe
影响因子：
15.5
作者：
Jiao, Shuo;Xu, Yiqin;Lu, Yahai
通讯作者：
Lu, Yahai