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A Pythium myriotylum Small Cysteine-Rich Protein Triggers Immune Responses in Diverse Plant Hosts.
Wang, Nan; Yin, Zhiyuan; Wu, Yingke; Yang, Jishuo; Zhao, Yaning; Daly, Paul; Pei, Yong; Zhou, Dongmei; Dou, Daolong; Wei, Lihui.
Afiliación
  • Wang N; Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing, China.
  • Yin Z; College of Plant Protection, Nanjing Agricultural University, Nanjing, China.
  • Wu Y; Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing, China.
  • Yang J; College of Plant Protection, Nanjing Agricultural University, Nanjing, China.
  • Zhao Y; Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing, China.
  • Daly P; Life Science and Food Engineering, Huaiyin Institute of Technology, Huaian, China.
  • Pei Y; College of Plant Protection, Nanjing Agricultural University, Nanjing, China.
  • Zhou D; Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing, China.
  • Dou D; College of Plant Protection, Nanjing Agricultural University, Nanjing, China.
  • Wei L; Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing, China.
Mol Plant Microbe Interact ; 36(5): 283-293, 2023 May.
Article en En | MEDLINE | ID: mdl-37022145
The oomycete Pythium myriotylum is a necrotrophic pathogen that infects many crop species worldwide, including ginger, soybean, tomato, and tobacco. Here, we identified a P. myriotylum small cysteine-rich protein, PmSCR1, that induces cell death in Nicotiana benthamiana by screening small, secreted proteins that were induced during infection of ginger and did not have a predicted function at the time of selection. Orthologs of PmSCR1 were found in other Pythium species, but these did not have cell death-inducing activity in N. benthamiana. PmSCR1 encodes a protein containing an auxiliary activity 17 family domain and triggers multiple immune responses in host plants. The elicitor function of PmSCR1 appears to be independent of enzymatic activity, because the heat inactivation of PmSCR1 protein did not affect PmSCR1-induced cell death or other defense responses. The elicitor function of PmSCR1 was also independent of BAK1 and SOBIR1. Furthermore, a small region of the protein, PmSCR186-211, is sufficient for inducing cell death. A pretreatment using the full-length PmSCR1 protein promoted the resistance of soybean and N. benthamiana to Phytophthora sojae and Phytophthora capsici infection, respectively. These results reveal that PmSCR1 is a novel elicitor from P. myriotylum, which exhibits plant immunity-inducing activity in multiple host plants. [Formula: see text] Copyright © 2023 The Author(s). This is an open access article distributed under the CC BY-NC-ND 4.0 International license.
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Texto completo: 1 Colección: 01-internacional Banco de datos: MEDLINE Asunto principal: Phytophthora / Pythium Idioma: En Revista: Mol Plant Microbe Interact Asunto de la revista: BIOLOGIA MOLECULAR / BOTANICA / MICROBIOLOGIA Año: 2023 Tipo del documento: Article País de afiliación: China

Texto completo: 1 Colección: 01-internacional Banco de datos: MEDLINE Asunto principal: Phytophthora / Pythium Idioma: En Revista: Mol Plant Microbe Interact Asunto de la revista: BIOLOGIA MOLECULAR / BOTANICA / MICROBIOLOGIA Año: 2023 Tipo del documento: Article País de afiliación: China