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RNA-Seq Provides New Insights into the Molecular Events Involved in "Ball-Skin versus Bladder Effect" on Fruit Cracking in Litchi.
Wang, Jun; Wu, Xiao Fang; Tang, Yong; Li, Jian Guo; Zhao, Ming Lei.
Afiliação
  • Wang J; State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, South China Agricultural University, Guangzhou 510642, China.
  • Wu XF; Ministry of Agriculture and Rural Affairs Key Laboratory of South China Horticultural Crop Biology and Germplasm Enhancement, College of Horticulture, South China Agricultural University, Guangzhou 510642, China.
  • Tang Y; State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, South China Agricultural University, Guangzhou 510642, China.
  • Li JG; Ministry of Agriculture and Rural Affairs Key Laboratory of South China Horticultural Crop Biology and Germplasm Enhancement, College of Horticulture, South China Agricultural University, Guangzhou 510642, China.
  • Zhao ML; State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, South China Agricultural University, Guangzhou 510642, China.
Int J Mol Sci ; 22(1)2021 Jan 05.
Article em En | MEDLINE | ID: mdl-33466443
ABSTRACT
Fruit cracking is a disorder of fruit development in response to internal or external cues, which causes a loss in the economic value of fruit. Therefore, exploring the mechanism underlying fruit cracking is of great significance to increase the economic yield of fruit trees. However, the molecular mechanism underlying fruit cracking is still poorly understood. Litchi, as an important tropical and subtropical fruit crop, contributes significantly to the gross agricultural product in Southeast Asia. One important agricultural concern in the litchi industry is that some famous varieties with high economic value such as 'Nuomici' are susceptible to fruit cracking. Here, the cracking-susceptible cultivar 'Nuomici' and cracking-resistant cultivar 'Huaizhi' were selected, and the samples including pericarp and aril during fruit development and cracking were collected for RNA-Seq analysis. Based on weighted gene co-expression network analysis (WGCNA) and the "ball-skin versus bladder effect" theory (fruit cracking occurs upon the aril expanding pressure exceeds the pericarp strength), it was found that seven co-expression modules genes (1733 candidate genes) were closely associated with fruit cracking in 'Nuomici'. Importantly, we propose that the low expression level of genes related to plant hormones (Auxin, Gibberellins, Ethylene), transcription factors, calcium transport and signaling, and lipid synthesis might decrease the mechanical strength of pericarp in 'Nuomici', while high expression level of genes associated with plant hormones (Auxin and abscisic acid), transcription factors, starch/sucrose metabolism, and sugar/water transport might increase the aril expanding pressure, thereby resulting in fruit cracking in 'Nuomici'. In conclusion, our results provide comprehensive molecular events involved in the "ball-skin versus bladder effect" on fruit cracking in litchi.
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Texto completo: 1 Base de dados: MEDLINE Assunto principal: Doenças das Plantas / Litchi / Frutas Idioma: En Ano de publicação: 2021 Tipo de documento: Article

Texto completo: 1 Base de dados: MEDLINE Assunto principal: Doenças das Plantas / Litchi / Frutas Idioma: En Ano de publicação: 2021 Tipo de documento: Article