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'Yunnan' quince rootstock promoted flower bud formation of 'Abbé Fetel' pear by altering hormone levels and PbAGL9 expression.
Cong, Liu; Ling, Hutian; Liu, Shanshan; Wang, Azheng; Zhai, Rui; Yang, Chengquan; Wang, Zhigang; Xu, Lingfei.
Afiliación
  • Cong L; College of Horticulture, Northwest A&F University, Yangling, Shaanxi Province, 712100, China. Electronic address: imcongliu@163.com.
  • Ling H; College of Horticulture, Northwest A&F University, Yangling, Shaanxi Province, 712100, China. Electronic address: 17835697357@139.com.
  • Liu S; College of Horticulture, Northwest A&F University, Yangling, Shaanxi Province, 712100, China. Electronic address: liushanshan215@yeah.net.
  • Wang A; College of Horticulture, Northwest A&F University, Yangling, Shaanxi Province, 712100, China. Electronic address: wangazheng0322@163.com.
  • Zhai R; College of Horticulture, Northwest A&F University, Yangling, Shaanxi Province, 712100, China. Electronic address: zhongdishaonian@sina.com.
  • Yang C; College of Horticulture, Northwest A&F University, Yangling, Shaanxi Province, 712100, China. Electronic address: cqyang@nwsuaf.edu.cn.
  • Wang Z; College of Horticulture, Northwest A&F University, Yangling, Shaanxi Province, 712100, China. Electronic address: wzhg001@163.com.
  • Xu L; College of Horticulture, Northwest A&F University, Yangling, Shaanxi Province, 712100, China. Electronic address: lingfxu2013@sina.com.
J Plant Physiol ; 282: 153924, 2023 Mar.
Article en En | MEDLINE | ID: mdl-36805518
Flower busd formation is an important plant growth process. It has been reported that dwarfing rootstocks can significantly affect the flower bud formation of scions. In this study, we found the dwarfing rootstock 'Yunnan' quince could significantly increase the flowering rate of 'Abbé Fetel' pear scions. The RNA-sequencing data revealed significant changes in the expression of genes related to hormone pathways. Furthermore, hormone analyses indicated that 'Yunnan' quince significantly decreased the GA3 content and increased the cytokinin/auxin ratio in 'Abbé Fetel' pear apical buds. The hormone contents were consistent with the RNA-sequencing data. Moreover, we found the flower development-related genes PbAGL9 and PbCAL-A1 were significantly upregulated and PbTFL1 was significantly downregulated in 'Abbé Fetel'/'Yunnan' quince apical buds. To further clarify the relationship between hormones and flowering-related genes, a hormone response assay was carried out. We found the expression levels of PbCAl-A1, PbTFL1 and PbAGL9 were regulated by hormones including GA3, CPPU and NAA. Y1H and dual-luciferase assays indicated that PbAGL9 significantly decreased the promoter activity of PbTFL1. In summary, 'Yunnan' quince upregulated PbCAL-A1 and PbAGL9, and downregulated PbTFL1 expression by decreasing the GA3 content and increasing the cytokinin/auxin ratio in 'Abbé Fetel' pear apical buds. Additionally, 'Yunnan' quince down-regulate PbTFL1 by upregulating the expression of PbAGL9, and eventually promoted floral induction in 'Abbé Fetel' pear.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Rosaceae / Pyrus Idioma: En Revista: J Plant Physiol Asunto de la revista: BOTANICA Año: 2023 Tipo del documento: Article Pais de publicación: Alemania
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Rosaceae / Pyrus Idioma: En Revista: J Plant Physiol Asunto de la revista: BOTANICA Año: 2023 Tipo del documento: Article Pais de publicación: Alemania