A trade-off between space exploration and mobilization of organic phosphorus through associated microbiomes enables niche differentiation of arbuscular mycorrhizal fungi on the same root

TitleA trade-off between space exploration and mobilization of organic phosphorus through associated microbiomes enables niche differentiation of arbuscular mycorrhizal fungi on the same root
Publication TypeJournal Article
Year of Publication2023
AuthorsZhou J.C, Kuyper T.W, Feng G.
JournalScience China-Life Sciences
Volume66
Pagination1426-1439
Date PublishedJun
Type of ArticleArticle
ISBN Number1674-7305
Accession NumberWOS:000935244900001
KeywordsARBUSCULAR MYCORRHIZAL FUNGI, bacterial assemblages, carbon, coexistence, colonization, communities, cooperation, diversity, ecology, Hyphosphere, Life Sciences & Biomedicine - Other Topics, neutral theory, organic phosphorus mobilization, phosphate, soil, space exploration
Abstract

Ecology seeks to explain species coexistence, but experimental tests of mechanisms for coexistence are difficult to conduct. We synthesized an arbuscular mycorrhizal (AM) fungal community with three fungal species that differed in their capacity of foraging for orthophosphate (P) due to differences in soil exploration. We tested whether AM fungal species-specific hyphosphere bacterial assemblages recruited by hyphal exudates enabled differentiation among the fungi in the capacity of mobilizing soil organic P (P-o). We found that the less efficient space explorer, Gigaspora margarita, obtained less C-13 from the plant, whereas it had higher efficiencies in P-o mobilization and alkaline phosphatase (AlPase) production per unit C than the two efficient space explorers, Rhizophagusintraradices and Funneliformis mosseae. Each AM fungus was associated with a distinct alp gene harboring bacterial assemblage, and the alp gene abundance and P-o preference of the microbiome associated with the less efficient space explorer were higher than those of the two other species. We conclude that the traits of AM fungal associated bacterial consortia cause niche differentiation. The trade-off between foraging ability and the ability to recruit effective P-o mobilizing microbiomes is a mechanism that allows co-existence of AM fungal species in a single plant root and surrounding soil habitat.

Short TitleSci. China-Life Sci.Sci. China-Life Sci.
Alternate JournalSci. China-Life Sci.
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Times Cited: 1
Cited Reference Count: 69
Zhou, Jiachao Kuyper, Thomas W. Feng, Gu
Zhou, Jiachao/GWU-5056-2022
National Natural Science Foundation of China [32272807, U1703232]; National Key Research and Development Program of China [2017YFD0200200]
AcknowledgementsThis work was supported by the National Natural Science Foundation of China (32272807, U1703232) and the National Key Research and Development Program of China (2017YFD0200200). We thank Lin Zhang (China Agricultural University) and Timothy S. George (The James Hutton Institute, the UK) for their help in writing ideas and language improvement in the early stage of the article.
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Feng, G (corresponding author), China Agr Univ, Coll Resources & Environm Sci, Beijing 100193, Peoples R China.
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