Responses of arbuscular mycorrhizal fungi to elevated atmospheric CO2 concentration and warming: A review

doi:10.13287/j.1001-9332.202206.014

Abstract

Abstract: Global changes have profound impacts on biodiversity and ecological functioning of terrestrial ecosystems. Arbuscular mycorrhizal (AM) fungi can form symbiotic associations with most terrestrial plant species and play an important role in nutrient acquisition of host plants, promotion of plant growth, and maintenance of plant diversity. In this review, we primarily focused on the responses and feedbacks of AM fungal community and functioning to elevated atmospheric CO₂(eCO₂) and warming in forest and grassland ecosystems. eCO₂ influenced AM fungi mainly through indirectly impacting host plants and soil carbon inputs. A majority of previous studies reported that eCO₂ could enhance the abundance and activity of AM fungi, and influence their diversity and community composition. Warming could have direct and indirect (via plant and/or soil pathways) impacts on AM fungi. Warming significantly altered the community compositions of AM fungi in forest soils. But the results from grassland were not consistent. We identified some outstanding problems in current studies and proposed future research topics which deserve more attentions. Our aim was to elucidate the AM fungal responses and adaptation to eCO₂ and warming and to improve our understanding of AM fungal functioning in soil ecological processes. This review could provide insights into the implications of AM fungi to mitigate global change and improve the resilience of soil functions, as well as climate change adaptation of ecosystems.

Key words: arbuscular mycorrhizal fungi, community composition, diversity, eCO₂, global change, forest ecosystem

SONG Ge, WANG Quan-cheng, ZHENG Yong, HE Ji-zheng. Responses of arbuscular mycorrhizal fungi to elevated atmospheric CO₂ concentration and warming: A review[J]. Chinese Journal of Applied Ecology, 2022, 33(6): 1709-1718.

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Responses of arbuscular mycorrhizal fungi to elevated atmospheric CO₂ concentration and warming: A review

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