Heavy metal induced resistance to herbivore of invasive plant: implications from inter- and intraspecific comparisons

IntroductionHeavy metals can affect the content of secondary metabolites in plants, which are one of the important defenses of plants against herbivores. However, studies on the effects of heavy metals on secondary metabolites of invasive plants are scarce. Phytolacca americana is an invasive plant...

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Main Authors: Yue Zhou, Chao Chen, Yuntao Xiong, Feng Xiao, Yi Wang
Format: Article
Language:English
Published: Frontiers Media S.A. 2023-08-01
Series:Frontiers in Plant Science
Subjects:
Online Access:https://www.frontiersin.org/articles/10.3389/fpls.2023.1222867/full
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author Yue Zhou
Chao Chen
Yuntao Xiong
Feng Xiao
Yi Wang
author_facet Yue Zhou
Chao Chen
Yuntao Xiong
Feng Xiao
Yi Wang
author_sort Yue Zhou
collection DOAJ
description IntroductionHeavy metals can affect the content of secondary metabolites in plants, which are one of the important defenses of plants against herbivores. However, studies on the effects of heavy metals on secondary metabolites of invasive plants are scarce. Phytolacca americana is an invasive plant in China, which can hyperaccumulate the heavy metal Mn.MethodsThis study used two Mn treatments (control and treatment group) and four species from Phytolacca (including the native and introduced populations of P. americana, its native and exotic congeners in China) to investigate the impact of heavy metal Mn on the invasive ability of P. americana.ResultsThe results show that heavy metal Mn can enhance the inhibitory effect of the introduced populations of P. americana on the growth of herbivore (the weight of herbivore has decreased by 66%), and altered the feeding preferences of herbivore. We also found that heavy metal Mn can significantly increase the content of quantitative resistance in the leaves of the introduced populations of P. americana and is higher than its native populations, native and exotic congeners. In addition, heavy metal Mn caused the quantitative resistance of the exotic congener significantly higher than that of the native congeners.DiscussionIn summary, the heavy metal Mn can increase the content of secondary metabolites in leaves to enhance the interspecific competitive advantage of P. americana and promote its invasion, and also increase the invasion risk of exotic species.
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spelling doaj.art-e9de7082726c4fbd965d910dc395da3e2023-08-16T14:27:48ZengFrontiers Media S.A.Frontiers in Plant Science1664-462X2023-08-011410.3389/fpls.2023.12228671222867Heavy metal induced resistance to herbivore of invasive plant: implications from inter- and intraspecific comparisonsYue ZhouChao ChenYuntao XiongFeng XiaoYi WangIntroductionHeavy metals can affect the content of secondary metabolites in plants, which are one of the important defenses of plants against herbivores. However, studies on the effects of heavy metals on secondary metabolites of invasive plants are scarce. Phytolacca americana is an invasive plant in China, which can hyperaccumulate the heavy metal Mn.MethodsThis study used two Mn treatments (control and treatment group) and four species from Phytolacca (including the native and introduced populations of P. americana, its native and exotic congeners in China) to investigate the impact of heavy metal Mn on the invasive ability of P. americana.ResultsThe results show that heavy metal Mn can enhance the inhibitory effect of the introduced populations of P. americana on the growth of herbivore (the weight of herbivore has decreased by 66%), and altered the feeding preferences of herbivore. We also found that heavy metal Mn can significantly increase the content of quantitative resistance in the leaves of the introduced populations of P. americana and is higher than its native populations, native and exotic congeners. In addition, heavy metal Mn caused the quantitative resistance of the exotic congener significantly higher than that of the native congeners.DiscussionIn summary, the heavy metal Mn can increase the content of secondary metabolites in leaves to enhance the interspecific competitive advantage of P. americana and promote its invasion, and also increase the invasion risk of exotic species.https://www.frontiersin.org/articles/10.3389/fpls.2023.1222867/fullherbivoreheavy metal pollutioninvasive plantresistancesecondary metabolites
spellingShingle Yue Zhou
Chao Chen
Yuntao Xiong
Feng Xiao
Yi Wang
Heavy metal induced resistance to herbivore of invasive plant: implications from inter- and intraspecific comparisons
Frontiers in Plant Science
herbivore
heavy metal pollution
invasive plant
resistance
secondary metabolites
title Heavy metal induced resistance to herbivore of invasive plant: implications from inter- and intraspecific comparisons
title_full Heavy metal induced resistance to herbivore of invasive plant: implications from inter- and intraspecific comparisons
title_fullStr Heavy metal induced resistance to herbivore of invasive plant: implications from inter- and intraspecific comparisons
title_full_unstemmed Heavy metal induced resistance to herbivore of invasive plant: implications from inter- and intraspecific comparisons
title_short Heavy metal induced resistance to herbivore of invasive plant: implications from inter- and intraspecific comparisons
title_sort heavy metal induced resistance to herbivore of invasive plant implications from inter and intraspecific comparisons
topic herbivore
heavy metal pollution
invasive plant
resistance
secondary metabolites
url https://www.frontiersin.org/articles/10.3389/fpls.2023.1222867/full
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