Community response of arbuscular mycorrhizal fungi to extreme drought in a cold-temperate grassland

0557800 - MBÚ 2023 RIV GB eng J - Journal Article
Fu, W. - Chen, B. - Rillig, M. - Jansa, Jan - Ma, W. - Xu, C. - Luo, W. - Wu, Ho. - Hao, Z. - Wu, H. - Zhao, A. - Yu, Q. - Han, X.
Community response of arbuscular mycorrhizal fungi to extreme drought in a cold-temperate grassland.
New Phytologist. Roč. 234, č. 6 (2022), s. 2003-2017. ISSN 0028-646X. E-ISSN 1469-8137
Institutional support: RVO:61388971
Keywords : phylogenetic structure * carbon allocation * climate-change * plant * ecosystem * patterns * alters * biodiversity * metaanalysis * resolution * arbuscular mycorrhiza * belowground biodiversity * climate change * community interactions * environmental filtering * mutualism * species coexistence
OECD category: Microbiology
Impact factor: 9.4, year: 2022
Method of publishing: Limited access
https://nph.onlinelibrary.wiley.com/doi/10.1111/nph.17692

Climate extremes pose enormous threats to natural ecosystems. Arbuscular mycorrhizal (AM) fungi are key plant symbionts that can affect plant community dynamics and ecosystem stability. However, knowledge about how AM fungal communities respond to climate extremes in natural ecosystems remains elusive. Based on a grassland extreme drought experiment in Inner Mongolia, we investigated the response of AM fungal communities to extreme drought in association with plant communities. The experiment simulated two types of extreme drought (chronic/intense) of once-in-20-year occurrence. AM fungal richness and community composition exhibited high sensitivity to extreme drought and were more sensitive to intense drought than chronic drought. This community sensitivity (i.e. decline in richness and shifts in community composition) of AM fungi can be jointly explained by soil moisture, plant richness, and aboveground productivity. Notably, the robustness of the plant-AM fungal community co-response increased with drought intensity. Our results indicate that AM fungal communities are sensitive to climate extremes, and we propose that the plant community mediates AM fungal community responses. Given the ubiquitous nature of AM associations, their climate sensitivity may have profound consequences on plant communities and ecosystem stability under climate change.
Permanent Link: https://hdl.handle.net/11104/0332565