Zhou, Y, Ge, S, Jin, L et al. (8 more authors) (2019) A novel CO₂-responsive systemic signaling pathway controlling plant mycorrhizal symbiosis. New Phytologist, 224 (1). pp. 106-116. ISSN 0028-646X
Abstract
Elevated atmospheric carbon dioxide (eCO₂) concentrations promote symbiosis between roots and arbuscular mycorrhizal fungi (AMF), modifying plant nutrient acquisition and cycling of carbon, nitrogen and phosphate. However, the biological mechanisms by which plants transmit aerial eCO₂ cues to roots, to alter the symbiotic associations remain unknown.
We used a range of interdisciplinary approaches, including gene silencing, grafting, transmission electron microscopy, liquid chromatography tandem mass spectrometry (LC–MS/MS), biochemical methodologies and gene transcript analysis to explore the complexities of environmental signal transmission from the point of perception in the leaves at the apex to the roots.
Here we show that eCO₂ triggers apoplastic hydrogen peroxide (H₂O₂)‐dependent auxin production in tomato shoots followed by systemic signaling that results in strigolactone biosynthesis in the roots. This redox‐auxin‐strigolactone systemic signaling cascade facilitates eCO₂‐induced AMF symbiosis and phosphate utilization.
Our results challenge the current paradigm of eCO₂ effects on AMF and provide new insights into potential targets for manipulation of AMF symbiosis for high nutrient utilization under future climate change scenarios.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2019 The Authors. New Phytologist © 2019 New Phytologist Trust. This is the peer reviewed version of the following article: Zhou, Y, Ge, S, Jin, L et al. (8 more authors) (2019) A novel CO₂-responsive systemic signaling pathway controlling plant mycorrhizal symbiosis. New Phytologist. ISSN 0028-646X, which has been published in final form at https://doi.org/10.1111/nph.15917. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. |
Keywords: | apoplastic H₂O₂; arbuscular mycorrhizal fungi (AMF); auxin; elevated CO₂; phosphate uptake; strigolactone; systematic signaling; tomato (Solanum lycopersicum) |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Biological Sciences (Leeds) > School of Biology (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 16 Jul 2019 09:17 |
Last Modified: | 14 May 2020 00:38 |
Status: | Published |
Publisher: | Wiley |
Identification Number: | 10.1111/nph.15917 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:148595 |