TY - JOUR
T1 - Land-use changes alter the arbuscular mycorrhizal fungal community composition and assembly in the ancient tea forest reserve
AU - Ji, Lingfei
AU - Yang, Xiangde
AU - Zhu, Chen
AU - Ma, Lifeng
AU - Chen, Yupei
AU - Ling, Ning
AU - Zhou, Zhongfan
AU - Ni, Kang
AU - Guo, Shiwei
AU - Helgason, Thorunn
AU - Ruan, Jianyun
N1 - Funding Information:
This work was financially supported by Yunnan Province Science and Technology Department ( 202102AE090038 ), National Science Foundation of China ( 32172634 ), Ministry of Agriculture and Rural Affairs of China ( CARS 19 , CAAS-ASTIP-TRICAAS , 1610212022008 , 1610212022015 ).
Publisher Copyright:
© 2022 Elsevier B.V.
PY - 2022/11/1
Y1 - 2022/11/1
N2 - Understanding the effects of land-use changes on arbuscular mycorrhizal fungal (AMF) communities may greatly benefit ecosystem conservation and restoration. However, how AMF communities respond to anthropogenetic land-use change (e.g., from natural ecosystems to farmland ecosystems) is still under debate. To enhance the preservation of vegetation diversity in ancient tea forest (ATF) regions and understand how land-use changes influence the AMF community in acidic soils, the AMF community composition and assembly processes in the ATF region (soil pH: 3.5–4.2) were investigated. Our results showed that AMF α-diversity indices in ATF were significantly higher than those in conventional tea plantations (CTP) and Forest. Moreover, number of indicator species (as virtual taxa, VTX) showed a remarkable decrease when ATF (12 VTXs) changed to Forest (8 VTXs) and CTP (3 VTXs). In addition, neutral processes dominated the AMF community assembly, and Acaulospora was the dominant genus of AMF indicator species in ATF. Moreover, land-use changes eliminated the neutral process of AMF community assembly in CTP and Forest by enhancing the environmental filtering effects. The concentrations of soil nitrate, TK, Mg2+, and Cu2+ were important factors accounting for the AMF community change. In addition, we found that high acidity soils may exert an ecological selection on the AMF community, as only species that adapt to strongly acidic soils persisted. Overall, our results indicated that mitigating soil acidification has potential as a method of improving the AMF community diversity and conserving and restoring ATF ecosystems in southwest China.
AB - Understanding the effects of land-use changes on arbuscular mycorrhizal fungal (AMF) communities may greatly benefit ecosystem conservation and restoration. However, how AMF communities respond to anthropogenetic land-use change (e.g., from natural ecosystems to farmland ecosystems) is still under debate. To enhance the preservation of vegetation diversity in ancient tea forest (ATF) regions and understand how land-use changes influence the AMF community in acidic soils, the AMF community composition and assembly processes in the ATF region (soil pH: 3.5–4.2) were investigated. Our results showed that AMF α-diversity indices in ATF were significantly higher than those in conventional tea plantations (CTP) and Forest. Moreover, number of indicator species (as virtual taxa, VTX) showed a remarkable decrease when ATF (12 VTXs) changed to Forest (8 VTXs) and CTP (3 VTXs). In addition, neutral processes dominated the AMF community assembly, and Acaulospora was the dominant genus of AMF indicator species in ATF. Moreover, land-use changes eliminated the neutral process of AMF community assembly in CTP and Forest by enhancing the environmental filtering effects. The concentrations of soil nitrate, TK, Mg2+, and Cu2+ were important factors accounting for the AMF community change. In addition, we found that high acidity soils may exert an ecological selection on the AMF community, as only species that adapt to strongly acidic soils persisted. Overall, our results indicated that mitigating soil acidification has potential as a method of improving the AMF community diversity and conserving and restoring ATF ecosystems in southwest China.
KW - acidic soils
KW - AMF diversity
KW - ancient tea forest
KW - community assembly
KW - community composition
KW - land-use change
U2 - 10.1016/j.agee.2022.108142
DO - 10.1016/j.agee.2022.108142
M3 - Article
AN - SCOPUS:85136501422
SN - 0167-8809
VL - 339
JO - Agriculture, Ecosystems and Environment
JF - Agriculture, Ecosystems and Environment
M1 - 108142
ER -