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Floral reversion mechanism in longan (Dimocarpus longan Lour.) revealed by proteomic and anatomic analyses

文献类型： 外文期刊

作者： You, Xiangrong 2 ; Wang, Ling 1 ; Liang, Wenyu 1 ; Gai, Yonghong 1 ; Wang, Xiaoyan 1 ; Chen, Wei 1 ;

作者机构： 1.Fujian Agr & Forestry Univ, Coll Life Sci, Fuzhou 350002, Peoples R China

2.Fujian Agr & Forestry Univ, Key Lab, Minist Educ Genet Breeding & Multiple Utilizat Co, Fuzhou 350002, Peoples R China

3.Guangxi Acad Agr Sci, Inst Agrofood Sci & Technol, Nanning 530007, Peoples R China

4.Ningxia Univ, Sch Life Sci, Yinchuan 750021, Peoples R China

关键词： 2-DE;D;longan;Differential proteins;Flowering reversion;Ultrastructure

期刊名称：JOURNAL OF PROTEOMICS （ 影响因子：4.044； 五年影响因子：4.02 ）

ISSN：

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收录情况： SCI

摘要： Two-dimensional gel electrophoresis (2-DE) was used to analyze the proteins related to floral reversion in Dimocarpus longan Lour. Proteins were extracted from buds undergoing the normal process of flowering and from those undergoing floral reversion in three developing stages in D. longan. Differentially expressed proteins were identified from the gels after 2-DE analysis, which were confirmed using matrix-assisted laser desorption/ionization-time of flying-mass spectroscopy and protein database search. A total of 39 proteins, including 18 up-regulated and 21 down-regulated proteins, were classified into different categories, such as energy and substance metabolism, protein translation, secondary metabolism, phytohormone, cytoskeleton structure, regulation, and stress tolerance. Among these, the largest functional class was associated with primary metabolism. Down-regulated proteins were involved in photosynthesis, transcription, and translation, whereas up-regulated proteins were involved in respiration. Decreased flavonoid synthesis and up-regulated GA20ox might be involved in the floral reversion process. Up-regulated 14-3-3 proteins played a role in the regulation of floral reversion in D. longan by responding to abiotic stress. Observations via transmission electron microscopy revealed the ultrastructure changes in shedding buds undergoing floral reversion. Overall, the results provided insights into the molecular basis for the floral reversion mechanism in D. longan.

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