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Overgrazing-induced legacy effects may permit Leymus chinensis to cope with herbivory

There is growing evidence that herbivory-induced legacy effects permit plants to cope with herbivory. However, herbivory-induced defense strategies in plants against grazing mammals have received little attention. To further understand the grazing-induced legacy effects on plants, we conducted a gre...

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Autores principales: Guo, Fenghui, Li, Xiliang, Jimoh, Saheed Olaide, Ding, Yong, Zhang, Yong, Shi, Shangli, Hou, Xiangyang
Formato: Online Artículo Texto
Lenguaje:English
Publicado: PeerJ Inc. 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7548072/
https://www.ncbi.nlm.nih.gov/pubmed/33083144
http://dx.doi.org/10.7717/peerj.10116
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author Guo, Fenghui
Li, Xiliang
Jimoh, Saheed Olaide
Ding, Yong
Zhang, Yong
Shi, Shangli
Hou, Xiangyang
author_facet Guo, Fenghui
Li, Xiliang
Jimoh, Saheed Olaide
Ding, Yong
Zhang, Yong
Shi, Shangli
Hou, Xiangyang
author_sort Guo, Fenghui
collection PubMed
description There is growing evidence that herbivory-induced legacy effects permit plants to cope with herbivory. However, herbivory-induced defense strategies in plants against grazing mammals have received little attention. To further understand the grazing-induced legacy effects on plants, we conducted a greenhouse experiment with Leymus chinensis experiencing different grazing histories. We focused on grazing-induced legacy effects on above-ground spatial avoidance and below-ground biomass allocation. Our results showed that L. chinensis collected from the continuous overgrazing plot (OG) exhibited higher performance under simulated grazing in terms of growth, cloning and colonizing ability than those collected from the 35-year no-grazing plot (NG). The enhanced adaptability of OG was attributed to increased above-ground spatial avoidance, which was mediated by larger leaf angle and shorter height (reduced vertical height and increased leaf angle contributed to the above-ground spatial avoidance at a lower herbivory stubble height, while reduced tiller natural height contributed to above-ground spatial avoidance at a higher herbivory stubble height). Contrary to our prediction, OG pre-allocated less biomass to the rhizome, which does not benefit the herbivory tolerance and avoidance of L. chinensis; however, this also may reflect a tolerance strategy where reduced allocation to rhizomes is associated with increased production of ramets.
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spelling pubmed-75480722020-10-19 Overgrazing-induced legacy effects may permit Leymus chinensis to cope with herbivory Guo, Fenghui Li, Xiliang Jimoh, Saheed Olaide Ding, Yong Zhang, Yong Shi, Shangli Hou, Xiangyang PeerJ Agricultural Science There is growing evidence that herbivory-induced legacy effects permit plants to cope with herbivory. However, herbivory-induced defense strategies in plants against grazing mammals have received little attention. To further understand the grazing-induced legacy effects on plants, we conducted a greenhouse experiment with Leymus chinensis experiencing different grazing histories. We focused on grazing-induced legacy effects on above-ground spatial avoidance and below-ground biomass allocation. Our results showed that L. chinensis collected from the continuous overgrazing plot (OG) exhibited higher performance under simulated grazing in terms of growth, cloning and colonizing ability than those collected from the 35-year no-grazing plot (NG). The enhanced adaptability of OG was attributed to increased above-ground spatial avoidance, which was mediated by larger leaf angle and shorter height (reduced vertical height and increased leaf angle contributed to the above-ground spatial avoidance at a lower herbivory stubble height, while reduced tiller natural height contributed to above-ground spatial avoidance at a higher herbivory stubble height). Contrary to our prediction, OG pre-allocated less biomass to the rhizome, which does not benefit the herbivory tolerance and avoidance of L. chinensis; however, this also may reflect a tolerance strategy where reduced allocation to rhizomes is associated with increased production of ramets. PeerJ Inc. 2020-10-08 /pmc/articles/PMC7548072/ /pubmed/33083144 http://dx.doi.org/10.7717/peerj.10116 Text en ©2020 Guo et al. https://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, reproduction and adaptation in any medium and for any purpose provided that it is properly attributed. For attribution, the original author(s), title, publication source (PeerJ) and either DOI or URL of the article must be cited.
spellingShingle Agricultural Science
Guo, Fenghui
Li, Xiliang
Jimoh, Saheed Olaide
Ding, Yong
Zhang, Yong
Shi, Shangli
Hou, Xiangyang
Overgrazing-induced legacy effects may permit Leymus chinensis to cope with herbivory
title Overgrazing-induced legacy effects may permit Leymus chinensis to cope with herbivory
title_full Overgrazing-induced legacy effects may permit Leymus chinensis to cope with herbivory
title_fullStr Overgrazing-induced legacy effects may permit Leymus chinensis to cope with herbivory
title_full_unstemmed Overgrazing-induced legacy effects may permit Leymus chinensis to cope with herbivory
title_short Overgrazing-induced legacy effects may permit Leymus chinensis to cope with herbivory
title_sort overgrazing-induced legacy effects may permit leymus chinensis to cope with herbivory
topic Agricultural Science
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7548072/
https://www.ncbi.nlm.nih.gov/pubmed/33083144
http://dx.doi.org/10.7717/peerj.10116
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