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Mycorrhizal colonisation in roots of Holcus lanatus (Yorkshire Fog) in a permanent pasture under conditions of reduced precipitation

Ayling, Sarah; George, Belinda; Rogers, Jackie

Mycorrhizal colonisation in roots of Holcus lanatus (Yorkshire Fog) in a permanent pasture under conditions of reduced precipitation Thumbnail


Authors

Belinda George

Jackie Rogers Jackie.Rogers@uwe.ac.uk
Associate Dean - Learning Teaching + Stu



Abstract

The UK climate is projected to become warmer, with more frequent hotter, drier summers. Many governments and international organisations are concerned about how climate change will affect food production and security. Mycorrhizal fungi are an essential part of agricultural systems and yet little is known about how climate change will affect mycorrhizal fungi. We investigated the effect of reduced precipitation on levels of arbuscular mycorrhizal (AM) colonisation in the top 10 cm of soil in the grass Holcus lanatus L. (Yorkshire Fog) in a permanent pasture in South Gloucestershire, UK. Incident rainfall was reduced, by approximately 50%, using clear gutters supported on steel frames. Over three growing seasons we observed little difference in levels of AM colonisation and numbers of intra-root fungal structures between the roots of H. lanatus grown with reduced or full incident rainfall. Time of year when water stress occurred had a stronger effect on levels of colonisation than the absolute amount of precipitation received. In H. lanatus, growing in a permanent pasture, levels of AM colonisation were around 40%-50%, across a range of precipitation, from 18% above to 36% below the long-term average. The results highlight the complex relationships between mycorrhizal fungi, host plant, and abiotic stress.

Citation

Ayling, S., George, B., & Rogers, J. (2021). Mycorrhizal colonisation in roots of Holcus lanatus (Yorkshire Fog) in a permanent pasture under conditions of reduced precipitation. Botany, 99(4), 199-208. https://doi.org/10.1139/cjb-2020-0162

Journal Article Type Article
Acceptance Date Nov 26, 2020
Online Publication Date Nov 27, 2020
Publication Date Apr 1, 2021
Deposit Date Feb 12, 2021
Publicly Available Date Feb 18, 2021
Journal Botany
Print ISSN 1916-2790
Publisher NRC Research Press
Peer Reviewed Peer Reviewed
Volume 99
Issue 4
Pages 199-208
DOI https://doi.org/10.1139/cjb-2020-0162
Keywords Keyword: Arbuscular mycorrizal fungi; climate change; drought; Holcus lanatus; reduced precipitation
Public URL https://uwe-repository.worktribe.com/output/6899560

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