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UVR8-TCP4-LOX2 module regulates UV-B tolerance in Arabidopsis.
Li, Cheng; Du, Jiancan; Xu, Huini; Feng, Zhenhua; Chater, Caspar C C; Duan, Yuanwen; Yang, Yongping; Sun, Xudong.
Afiliación
  • Li C; Yunnan Key Laboratory of Crop Wild Relatives Omics, The Germplasm Bank of Wild Species, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, China.
  • Du J; University of Chinese Academy of Sciences, Beijing, 100049, China.
  • Xu H; Yunnan Key Laboratory of Crop Wild Relatives Omics, The Germplasm Bank of Wild Species, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, China.
  • Feng Z; CAS Key Laboratory of Tropical Plant Resources and Sustainable Use, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Kunming, 650223, China.
  • Chater CCC; Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, 650031, China.
  • Duan Y; Yunnan Key Laboratory of Crop Wild Relatives Omics, The Germplasm Bank of Wild Species, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, China.
  • Yang Y; Royal Botanic Gardens, Kew, Richmond, Surrey, TW9 3AE, UK.
  • Sun X; Yunnan Key Laboratory of Crop Wild Relatives Omics, The Germplasm Bank of Wild Species, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, China.
J Integr Plant Biol ; 66(5): 897-908, 2024 May.
Article en En | MEDLINE | ID: mdl-38506424
ABSTRACT
The phytohormone jasmonate (JA) coordinates stress and growth responses to increase plant survival in unfavorable environments. Although JA can enhance plant UV-B stress tolerance, the mechanisms underlying the interaction of UV-B and JA in this response remain unknown. In this study, we demonstrate that the UV RESISTANCE LOCUS 8 - TEOSINTE BRANCHED1, Cycloidea and PCF 4 - LIPOXYGENASE2 (UVR8-TCP4-LOX2) module regulates UV-B tolerance dependent on JA signaling pathway in Arabidopsis thaliana. We show that the nucleus-localized UVR8 physically interacts with TCP4 to increase the DNA-binding activity of TCP4 and upregulate the JA biosynthesis gene LOX2. Furthermore, UVR8 activates the expression of LOX2 in a TCP4-dependent manner. Our genetic analysis also provides evidence that TCP4 acts downstream of UVR8 and upstream of LOX2 to mediate plant responses to UV-B stress. Our results illustrate that the UV-B-dependent interaction of UVR8 and TCP4 serves as an important UVR8-TCP4-LOX2 module, which integrates UV-B radiation and JA signaling and represents a new UVR8 signaling mechanism in plants.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Rayos Ultravioleta / Arabidopsis / Regulación de la Expresión Génica de las Plantas / Ciclopentanos / Proteínas de Arabidopsis / Oxilipinas Idioma: En Revista: J Integr Plant Biol Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación: China
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Rayos Ultravioleta / Arabidopsis / Regulación de la Expresión Génica de las Plantas / Ciclopentanos / Proteínas de Arabidopsis / Oxilipinas Idioma: En Revista: J Integr Plant Biol Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación: China