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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MDPI AG
2021
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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 |
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DOAJ |
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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 |
work_keys_str_mv |
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