Identification of the <i>Capsicum baccatum</i> NLR Protein CbAR9 Conferring Disease Resistance to Anthracnose

Anthracnose is caused by <i>Colletotrichum</i> species and is one of the most virulent fungal diseases affecting chili pepper (<i>Capsicum</i>) yield globally. However, the noble genes conferring resistance to <i>Colletotrichum</i> species remain largely elusive....

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Autores principales: Seungmin Son, Soohong Kim, Kyong Sil Lee, Jun Oh, Inchan Choi, Jae Wahng Do, Jae Bok Yoon, Jungheon Han, Doil Choi, Sang Ryeol Park
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Publicado: MDPI AG 2021
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Acceso en línea:https://doaj.org/article/311af52c9a2243079b61c413bcddf4de
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spelling oai:doaj.org-article:311af52c9a2243079b61c413bcddf4de2021-11-25T17:58:19ZIdentification of the <i>Capsicum baccatum</i> NLR Protein CbAR9 Conferring Disease Resistance to Anthracnose10.3390/ijms2222126121422-00671661-6596https://doaj.org/article/311af52c9a2243079b61c413bcddf4de2021-11-01T00:00:00Zhttps://www.mdpi.com/1422-0067/22/22/12612https://doaj.org/toc/1661-6596https://doaj.org/toc/1422-0067Anthracnose is caused by <i>Colletotrichum</i> species and is one of the most virulent fungal diseases affecting chili pepper (<i>Capsicum</i>) yield globally. However, the noble genes conferring resistance to <i>Colletotrichum</i> species remain largely elusive. In this study, we identified <i>CbAR9</i> as the causal locus underlying the large effect quantitative trait locus <i>CcR9</i> from the anthracnose-resistant chili pepper variety PBC80. <i>CbAR9</i> encodes a nucleotide-binding and leucine-rich repeat (NLR) protein related to defense-associated NLRs in several other plant species. <i>CbAR9</i> transcript levels were induced dramatically after <i>Colletotrichum capsici</i> infection. To explore the biological function, we generated transgenic <i>Nicotiana benthamiana</i> lines overexpressing <i>CbAR9</i>, which showed enhanced resistance to <i>C. capsici</i> relative to wild-type plants. Transcript levels of pathogenesis-related (<i>PR</i>) genes increased markedly in <i>CbAR9</i>-overexpressing <i>N. benthamiana</i> plants. Moreover, resistance to anthracnose and transcript levels of <i>PR1</i> and <i>PR2</i> were markedly reduced in <i>CbAR9</i>-silenced chili pepper fruits after <i>C. capsici</i> infection. Our results revealed that CbAR9 contributes to innate immunity against <i>C. capsici</i>.Seungmin SonSoohong KimKyong Sil LeeJun OhInchan ChoiJae Wahng DoJae Bok YoonJungheon HanDoil ChoiSang Ryeol ParkMDPI AGarticle<i>Capsicum baccatum</i><i>Colletotrichum capsici</i>innate immunity<i>Nicotiana benthamiana</i>nucleotide-binding and leucine-rich repeatBiology (General)QH301-705.5ChemistryQD1-999ENInternational Journal of Molecular Sciences, Vol 22, Iss 12612, p 12612 (2021)
institution DOAJ
collection DOAJ
language EN
topic <i>Capsicum baccatum</i>
<i>Colletotrichum capsici</i>
innate immunity
<i>Nicotiana benthamiana</i>
nucleotide-binding and leucine-rich repeat
Biology (General)
QH301-705.5
Chemistry
QD1-999
spellingShingle <i>Capsicum baccatum</i>
<i>Colletotrichum capsici</i>
innate immunity
<i>Nicotiana benthamiana</i>
nucleotide-binding and leucine-rich repeat
Biology (General)
QH301-705.5
Chemistry
QD1-999
Seungmin Son
Soohong Kim
Kyong Sil Lee
Jun Oh
Inchan Choi
Jae Wahng Do
Jae Bok Yoon
Jungheon Han
Doil Choi
Sang Ryeol Park
Identification of the <i>Capsicum baccatum</i> NLR Protein CbAR9 Conferring Disease Resistance to Anthracnose
description Anthracnose is caused by <i>Colletotrichum</i> species and is one of the most virulent fungal diseases affecting chili pepper (<i>Capsicum</i>) yield globally. However, the noble genes conferring resistance to <i>Colletotrichum</i> species remain largely elusive. In this study, we identified <i>CbAR9</i> as the causal locus underlying the large effect quantitative trait locus <i>CcR9</i> from the anthracnose-resistant chili pepper variety PBC80. <i>CbAR9</i> encodes a nucleotide-binding and leucine-rich repeat (NLR) protein related to defense-associated NLRs in several other plant species. <i>CbAR9</i> transcript levels were induced dramatically after <i>Colletotrichum capsici</i> infection. To explore the biological function, we generated transgenic <i>Nicotiana benthamiana</i> lines overexpressing <i>CbAR9</i>, which showed enhanced resistance to <i>C. capsici</i> relative to wild-type plants. Transcript levels of pathogenesis-related (<i>PR</i>) genes increased markedly in <i>CbAR9</i>-overexpressing <i>N. benthamiana</i> plants. Moreover, resistance to anthracnose and transcript levels of <i>PR1</i> and <i>PR2</i> were markedly reduced in <i>CbAR9</i>-silenced chili pepper fruits after <i>C. capsici</i> infection. Our results revealed that CbAR9 contributes to innate immunity against <i>C. capsici</i>.
format article
author Seungmin Son
Soohong Kim
Kyong Sil Lee
Jun Oh
Inchan Choi
Jae Wahng Do
Jae Bok Yoon
Jungheon Han
Doil Choi
Sang Ryeol Park
author_facet Seungmin Son
Soohong Kim
Kyong Sil Lee
Jun Oh
Inchan Choi
Jae Wahng Do
Jae Bok Yoon
Jungheon Han
Doil Choi
Sang Ryeol Park
author_sort Seungmin Son
title Identification of the <i>Capsicum baccatum</i> NLR Protein CbAR9 Conferring Disease Resistance to Anthracnose
title_short Identification of the <i>Capsicum baccatum</i> NLR Protein CbAR9 Conferring Disease Resistance to Anthracnose
title_full Identification of the <i>Capsicum baccatum</i> NLR Protein CbAR9 Conferring Disease Resistance to Anthracnose
title_fullStr Identification of the <i>Capsicum baccatum</i> NLR Protein CbAR9 Conferring Disease Resistance to Anthracnose
title_full_unstemmed Identification of the <i>Capsicum baccatum</i> NLR Protein CbAR9 Conferring Disease Resistance to Anthracnose
title_sort identification of the <i>capsicum baccatum</i> nlr protein cbar9 conferring disease resistance to anthracnose
publisher MDPI AG
publishDate 2021
url https://doaj.org/article/311af52c9a2243079b61c413bcddf4de
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