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NAC Transcription Factor PpNAP4 Promotes Chlorophyll Degradation and Anthocyanin Synthesis in the Skin of Peach Fruit.
Dai, Jieyu; Xu, Ze; Fang, Zhouheng; Zheng, Xuyang; Cao, Lijun; Kang, Tongyang; Xu, Yuting; Zhang, Xingzhen; Zhan, Qianjin; Wang, Hong; Hu, Yanan; Zhao, Caiping.
Afiliación
  • Dai J; College of Horticulture, Northwest A & F University, Yangling 712100, P.R. China.
  • Xu Z; College of Horticulture, Northwest A & F University, Yangling 712100, P.R. China.
  • Fang Z; Institute of Fruit Tree Research, Guangdong Academy of Agricultural Sciences, Guangzhou 510640, P.R. China.
  • Zheng X; Key Laboratory of South Subtropical Fruit Biology and Genetic Resource Utilization, Ministry of Agriculture and Rural Affairs, Guangzhou 510640, P.R. China.
  • Cao L; Guangdong Provincial Key Laboratory of Tropical and Subtropical Fruit Tree Research, Guangzhou 510640, P.R. China.
  • Kang T; College of Horticulture, Northwest A & F University, Yangling 712100, P.R. China.
  • Xu Y; College of Horticulture, Northwest A & F University, Yangling 712100, P.R. China.
  • Zhang X; Howard Hughes Medical Institute, Duke University, Durham, North Carolina 27708, United States.
  • Zhan Q; Department of Biology, Box 90338, Duke University, Durham, North Carolina 27708, United States.
  • Wang H; College of Horticulture, Northwest A & F University, Yangling 712100, P.R. China.
  • Hu Y; College of Horticulture, Northwest A & F University, Yangling 712100, P.R. China.
  • Zhao C; College of Horticulture, Northwest A & F University, Yangling 712100, P.R. China.
J Agric Food Chem ; 72(36): 19826-19837, 2024 Sep 11.
Article en En | MEDLINE | ID: mdl-39213503
ABSTRACT
Chlorophyll (Chl) catabolism and anthocyanin synthesis play pivotal roles in determining the final skin color of fruits during maturation. However, in peach (Prunus persica) fruit, the regulatory mechanism governing skin color, especially the Chl catabolism, remains largely elusive. In this study, we identified ten Chl catabolic genes (CCGs), with PpSGR emerging as a key regulator in Chl degradation in peaches. Furthermore, a NAC-like, activated by AP3/P1 (NAP) transcription factor (TF), PpNAP4, was identified as a positive modulator of Chl breakdown. PpNAP4 induced the expression of PpSGR and other CCGs, including PpPPH, PpPAO, and PpTIC55-2, by directly binding to their promoters. Overexpression of PpNAP4 resulted in a heightened expression of these genes and accelerated Chl degradation. Notably, PpNAP4 also positively regulated the expression of PpANS and PpMYB10.1, one key structural gene and a core transcriptional regulator of anthocyanin synthesis, thereby contributing to fruit coloration. In summary, our findings elucidate that PpNAP4 serves as a pivotal regulator in determining the final skin color of peach by orchestrating Chl degradation and anthocyanin accumulation through direct activation of multiple CCGs and anthocyanin related genes.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Proteínas de Plantas / Factores de Transcripción / Clorofila / Regulación de la Expresión Génica de las Plantas / Prunus persica / Frutas / Antocianinas Idioma: En Revista: J Agric Food Chem Año: 2024 Tipo del documento: Article Pais de publicación: Estados Unidos
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Proteínas de Plantas / Factores de Transcripción / Clorofila / Regulación de la Expresión Génica de las Plantas / Prunus persica / Frutas / Antocianinas Idioma: En Revista: J Agric Food Chem Año: 2024 Tipo del documento: Article Pais de publicación: Estados Unidos