Silicon amendment is involved in the induction of plant defense responses to a phloem feeder

Abstract Plant resistance to herbivores is a key component in integrated pest management. In most cases, silicon (Si) amendment to plants enhances resistance to herbivorous insects. The increase of plant physical barrier and altered insect behaviors are proposed as mechanisms for the enhanced resist...

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Autores principales:	Lang Yang, Yongqiang Han, Pei Li, Fei Li, Shahbaz Ali, Maolin Hou
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/a8a4030757d94757b82cd7f68bb59813
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spelling	oai:doaj.org-article:a8a4030757d94757b82cd7f68bb598132021-12-02T16:07:49ZSilicon amendment is involved in the induction of plant defense responses to a phloem feeder10.1038/s41598-017-04571-22045-2322https://doaj.org/article/a8a4030757d94757b82cd7f68bb598132017-06-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-04571-2https://doaj.org/toc/2045-2322Abstract Plant resistance to herbivores is a key component in integrated pest management. In most cases, silicon (Si) amendment to plants enhances resistance to herbivorous insects. The increase of plant physical barrier and altered insect behaviors are proposed as mechanisms for the enhanced resistance in Si-amended plants, but our understanding of the induced mechanisms involved in Si-enhanced plant resistance to phloem-feeding insects remains unclear. Here, we show that Si amendment to rice (Oryza sativa) plants impacts multiple plant defense responses induced by a phloem-feeder, the brown planthopper (Nilaparvata lugens, BPH). Si amendment improved silicification of leaf sheaths that BPH feed on. Si addition suppressed the increase of malondialdehyde concentration while encouraged increase of H2O2 concentration in plants attacked by BPH. Higher activities of catalase and superoxide dismutase were recorded in Si-amended than in non-amended BPH-infested plants. BPH infestation activated synthases for secondary metabolites, polyphenol oxidase and pheny-lalanine ammonia-lyase, and β-1,3-glucanase, but the activation was greater in Si-amended than in non-amended plants. Taken together, our findings demonstrate that Si amendment interacts with BPH infestation in the induction of plant defense responses and consequently, to confer enhanced rice plant resistance.Lang YangYongqiang HanPei LiFei LiShahbaz AliMaolin HouNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-9 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Lang Yang Yongqiang Han Pei Li Fei Li Shahbaz Ali Maolin Hou Silicon amendment is involved in the induction of plant defense responses to a phloem feeder
description	Abstract Plant resistance to herbivores is a key component in integrated pest management. In most cases, silicon (Si) amendment to plants enhances resistance to herbivorous insects. The increase of plant physical barrier and altered insect behaviors are proposed as mechanisms for the enhanced resistance in Si-amended plants, but our understanding of the induced mechanisms involved in Si-enhanced plant resistance to phloem-feeding insects remains unclear. Here, we show that Si amendment to rice (Oryza sativa) plants impacts multiple plant defense responses induced by a phloem-feeder, the brown planthopper (Nilaparvata lugens, BPH). Si amendment improved silicification of leaf sheaths that BPH feed on. Si addition suppressed the increase of malondialdehyde concentration while encouraged increase of H2O2 concentration in plants attacked by BPH. Higher activities of catalase and superoxide dismutase were recorded in Si-amended than in non-amended BPH-infested plants. BPH infestation activated synthases for secondary metabolites, polyphenol oxidase and pheny-lalanine ammonia-lyase, and β-1,3-glucanase, but the activation was greater in Si-amended than in non-amended plants. Taken together, our findings demonstrate that Si amendment interacts with BPH infestation in the induction of plant defense responses and consequently, to confer enhanced rice plant resistance.
format	article
author	Lang Yang Yongqiang Han Pei Li Fei Li Shahbaz Ali Maolin Hou
author_facet	Lang Yang Yongqiang Han Pei Li Fei Li Shahbaz Ali Maolin Hou
author_sort	Lang Yang
title	Silicon amendment is involved in the induction of plant defense responses to a phloem feeder
title_short	Silicon amendment is involved in the induction of plant defense responses to a phloem feeder
title_full	Silicon amendment is involved in the induction of plant defense responses to a phloem feeder
title_fullStr	Silicon amendment is involved in the induction of plant defense responses to a phloem feeder
title_full_unstemmed	Silicon amendment is involved in the induction of plant defense responses to a phloem feeder
title_sort	silicon amendment is involved in the induction of plant defense responses to a phloem feeder
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/a8a4030757d94757b82cd7f68bb59813
work_keys_str_mv	AT langyang siliconamendmentisinvolvedintheinductionofplantdefenseresponsestoaphloemfeeder AT yongqianghan siliconamendmentisinvolvedintheinductionofplantdefenseresponsestoaphloemfeeder AT peili siliconamendmentisinvolvedintheinductionofplantdefenseresponsestoaphloemfeeder AT feili siliconamendmentisinvolvedintheinductionofplantdefenseresponsestoaphloemfeeder AT shahbazali siliconamendmentisinvolvedintheinductionofplantdefenseresponsestoaphloemfeeder AT maolinhou siliconamendmentisinvolvedintheinductionofplantdefenseresponsestoaphloemfeeder
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Silicon amendment is involved in the induction of plant defense responses to a phloem feeder

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