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Arbuscular Mycorrhizal Fungal Mediation of Plant-Plant Interactions in a Marshland Plant Community

Obligate aerobic AMF taxa have high species richness under waterlogged conditions, but their ecological role remains unclear. Here we focused on AM fungal mediation of plant interactions in a marshland plant community. Five cooccurring plant species were chosen for a neighbor removal experiment in w...

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Autores principales: Zhang, Qian, Sun, Qixiang, Koide, Roger T., Peng, Zhenhua, Zhou, Jinxing, Gu, Xungang, Gao, Weidong, Yu, Meng
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Hindawi Publishing Corporation 2014
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3943290/
https://www.ncbi.nlm.nih.gov/pubmed/24693254
http://dx.doi.org/10.1155/2014/923610
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author Zhang, Qian
Sun, Qixiang
Koide, Roger T.
Peng, Zhenhua
Zhou, Jinxing
Gu, Xungang
Gao, Weidong
Yu, Meng
author_facet Zhang, Qian
Sun, Qixiang
Koide, Roger T.
Peng, Zhenhua
Zhou, Jinxing
Gu, Xungang
Gao, Weidong
Yu, Meng
author_sort Zhang, Qian
collection PubMed
description Obligate aerobic AMF taxa have high species richness under waterlogged conditions, but their ecological role remains unclear. Here we focused on AM fungal mediation of plant interactions in a marshland plant community. Five cooccurring plant species were chosen for a neighbor removal experiment in which benomyl was used to suppress AMF colonization. A Phragmites australis removal experiment was also performed to study its role in promoting AMF colonization by increasing rhizosphere oxygen concentration. Mycorrhizal fungal effects on plant interactions were different for dominant and subdominant plant species. AMF colonization has driven positive neighbor effects for three subdominant plant species including Kummerowia striata, Leonurus artemisia, and Ixeris polycephala. In contrast, AMF colonization enhanced the negative effects of neighbors on the dominant Conyza canadensis and had no significant impact on the neighbor interaction to the dominant Polygonum pubescens. AM colonization was positively related to oxygen concentration. P. australis increased oxygen concentration, enhanced AMF colonization, and was thus indirectly capable of influencing plant interactions. Aerobic AM fungi appear to be ecologically relevant in this wetland ecosystem. They drive positive neighbor interactions for subdominant plant species, effectively increasing plant diversity. We suggest, therefore, that AM fungi may be ecologically important even under waterlogged conditions.
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spelling pubmed-39432902014-04-01 Arbuscular Mycorrhizal Fungal Mediation of Plant-Plant Interactions in a Marshland Plant Community Zhang, Qian Sun, Qixiang Koide, Roger T. Peng, Zhenhua Zhou, Jinxing Gu, Xungang Gao, Weidong Yu, Meng ScientificWorldJournal Research Article Obligate aerobic AMF taxa have high species richness under waterlogged conditions, but their ecological role remains unclear. Here we focused on AM fungal mediation of plant interactions in a marshland plant community. Five cooccurring plant species were chosen for a neighbor removal experiment in which benomyl was used to suppress AMF colonization. A Phragmites australis removal experiment was also performed to study its role in promoting AMF colonization by increasing rhizosphere oxygen concentration. Mycorrhizal fungal effects on plant interactions were different for dominant and subdominant plant species. AMF colonization has driven positive neighbor effects for three subdominant plant species including Kummerowia striata, Leonurus artemisia, and Ixeris polycephala. In contrast, AMF colonization enhanced the negative effects of neighbors on the dominant Conyza canadensis and had no significant impact on the neighbor interaction to the dominant Polygonum pubescens. AM colonization was positively related to oxygen concentration. P. australis increased oxygen concentration, enhanced AMF colonization, and was thus indirectly capable of influencing plant interactions. Aerobic AM fungi appear to be ecologically relevant in this wetland ecosystem. They drive positive neighbor interactions for subdominant plant species, effectively increasing plant diversity. We suggest, therefore, that AM fungi may be ecologically important even under waterlogged conditions. Hindawi Publishing Corporation 2014-02-12 /pmc/articles/PMC3943290/ /pubmed/24693254 http://dx.doi.org/10.1155/2014/923610 Text en Copyright © 2014 Qian Zhang et al. https://creativecommons.org/licenses/by/3.0/ This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Research Article
Zhang, Qian
Sun, Qixiang
Koide, Roger T.
Peng, Zhenhua
Zhou, Jinxing
Gu, Xungang
Gao, Weidong
Yu, Meng
Arbuscular Mycorrhizal Fungal Mediation of Plant-Plant Interactions in a Marshland Plant Community
title Arbuscular Mycorrhizal Fungal Mediation of Plant-Plant Interactions in a Marshland Plant Community
title_full Arbuscular Mycorrhizal Fungal Mediation of Plant-Plant Interactions in a Marshland Plant Community
title_fullStr Arbuscular Mycorrhizal Fungal Mediation of Plant-Plant Interactions in a Marshland Plant Community
title_full_unstemmed Arbuscular Mycorrhizal Fungal Mediation of Plant-Plant Interactions in a Marshland Plant Community
title_short Arbuscular Mycorrhizal Fungal Mediation of Plant-Plant Interactions in a Marshland Plant Community
title_sort arbuscular mycorrhizal fungal mediation of plant-plant interactions in a marshland plant community
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3943290/
https://www.ncbi.nlm.nih.gov/pubmed/24693254
http://dx.doi.org/10.1155/2014/923610
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