title: Sucrose functions as a signal involved in the regulation of strawberry fruit development and ripening.
abstract: Fleshy fruits are classically divided into climacteric and nonclimacteric types. It has long been thought that the ripening of climacteric and nonclimacteric fruits is regulated by ethylene and abscisic acid (ABA), respectively. Here, we report that sucrose functions as a signal in the ripening of strawberry (Fragaria × ananassa), a nonclimacteric fruit. Pharmacological experiments, as well as gain- and loss-of-function studies, were performed to demonstrate the critical role of sucrose in the regulation of fruit ripening. Fruit growth and development were closely correlated with a change in sucrose content. Exogenous sucrose and its nonmetabolizable analog, turanose, induced ABA accumulation in fruit and accelerated dramatically fruit ripening. A set of sucrose transporters, FaSUT1-7, was identified and characterized, among which FaSUT1 was found to be a major component responsible for sucrose accumulation during fruit development. RNA interference-induced silencing of FaSUT1 led to a decrease in both sucrose and ABA content, and arrested fruit ripening. By contrast, overexpression of FaSUT1 led to an increase in both sucrose and ABA content, and accelerated fruit ripening. In conclusion, this study demonstrates that sucrose is an important signal in the regulation of strawberry fruit ripening.
authors: College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China.
authors: Haifeng
authors: H
authors: Jia
authors: College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China.
authors: Yuanhua
authors: Y
authors: Wang
authors: College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China.
authors: Mingzhu
authors: M
authors: Sun
authors: College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China.
authors: Bingbing
authors: B
authors: Li
authors: College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China.
authors: Yu
authors: Y
authors: Han
authors: College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China.
authors: Yanxia
authors: Y
authors: Zhao
authors: College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China.
authors: Xingliang
authors: X
authors: Li
authors: College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China.
authors: Ning
authors: N
authors: Ding
authors: College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China.
authors: Chen
authors: C
authors: Li
authors: College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China.
authors: Wenlong
authors: W
authors: Ji
authors: College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China.
authors: Wensuo
authors: W
authors: Jia
mesh_terms: D000040:Abscisic Acid / Q000378:metabolism; D003433:Crosses, Genetic; D031985:Fragaria / Q000187:drug effects / Q000235:genetics / Q000254:growth & development* / Q000378:metabolism*; D005638:Fruit / Q000187:drug effects / Q000235:genetics / Q000254:growth & development* / Q000378:metabolism*; D018507:Gene Expression Regulation, Developmental / Q000187:drug effects; D018506:Gene Expression Regulation, Plant / Q000187:drug effects; D017343:Genes, Plant / Q000235:genetics; D026901:Membrane Transport Proteins / Q000235:genetics / Q000378:metabolism; D010940:Plant Proteins / Q000235:genetics / Q000378:metabolism; D034622:RNA Interference / Q000187:drug effects; D015398:Signal Transduction / Q000187:drug effects / Q000235:genetics; D013395:Sucrose / Q000378:metabolism* / Q000494:pharmacology
chemical_list: D026901:Membrane Transport Proteins; D010940:Plant Proteins; C078729:sucrose transport protein, plant; D013395:Sucrose; D000040:Abscisic Acid