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Genome-wide identification of the CONSTANS-LIKE(COL)family and mechanism of fruit senescence regulation by PpCOL8 in sand pear(Pyrus pyrifolia)

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Journal of Integrative Agriculture 2024年第4期23卷 1222-1237页

作者： Yue Xu Shurui Song Huiying Wang Xilong Cao Xinran Zhao Wenli Wang Liyue Huo Yawei Li Misganaw Wassie Bin Lu Liang Chen Haiyan Shi College of Horticulture Hebei Agricultural UniversityBaoding 071001China Wuhan Botanical Garden Chinese Academy of SciencesWuhan 430074China

Pyrus pyrifolia Nakai‘Whangkeumbae'is a sand pear fruit with excellent nutritional quality and ***,the industrial development of pear fruit is significantly limited by its short shelf *** acid(SA),a well-known phytohormone,can delay fruit senescence and improve shelf ***,the mechanism by which SA regulates CONSTANS-LIKE genes(COLs)during fruit senescence and the role of COL genes in mediating fruit senescence in sand pear are poorly *** this study,22 COL genes were identified in sand pear,including four COLs(Pp COL8,Pp COL9a,Pp COL9b,and Pp COL14)identified via transcriptome analysis and 18 COLs through genome-wide *** COL genes were divided into three subgroups according to the structural domains of the COL *** COL8,with two B-box motifs and one CCT domain,belonged to the first *** contrast,the other three Pp COLs,Pp COL9a,Pp COL9b,and Pp COL14,with similar conserved protein domains and gene structures,were assigned to the third *** four COLs showed different expression patterns in pear tissues and were preferentially expressed at the early stage of fruit ***,the expression of Pp COL8 was inhibited by exogenous SA treatment,while SA up-regulated the expression of Pp COL9a and Pp ***,Pp COL8 interacts with Pp MADS,a MADS-box protein preferentially expressed in fruit,and SA up-regulated its *** the production of ethylene and the content of malondialdehyde(MDA)were increased in Pp COL8-overexpression sand pear fruit,the antioxidant enzyme(POD and SOD)activity and the expression of Pp POD1 and Pp SOD1 in the sand pear fruits were down-regulated,which showed that Pp COL8 promoted sand pear fruit *** contrast,the corresponding changes were the opposite in Pp MADS-overexpression sand pear fruits,suggesting that Pp MADS delayed sand pear fruit *** co-transformation of Pp COL8 and Pp MADS also delayed sand pear fruit *** re

关键词： Pyrus pyrifolia CONSTANS-LIKE gene salicylic acid fruit senescence MADS

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维普期刊数据库

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Involvement of long non-coding RNAs in pear fruit senescence under high-and low-temperature conditions

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Horticultural Plant Journal 2023年第2期9卷 224-236页

作者： Yuhang Zhou Xueping Wang Kaijie Qi Jianping Bao Shaoling Zhang Chao Gu Centre of Pear Engineering Technology Research State Key Laboratory of Crop Genetics and Germplasm EnhancementNanjing Agricultural UniversityNanjing210095China College of Plant Science Tarim UniversityAlaer843300XinjiangChina

Pear fruit senescence under high-and low-temperature conditions has been reported to be mediated by *** non-coding RNAs(lncRNAs),which can function as competing endogenous RNAs that interact with microRNAs,may also be involved in temperature-affected fruit *** on the transcriptome and microRNA sequencings,in this study,3330 lncRNAs were isolated from Pyrus pyrifolia *** these lncRNAs,2060 and 537 were responsive to high-and low-temperature conditions,*** these differentially expressed lncRNAs,82 and 24 correlated to the mRNAs involved in fruit senescence under high-and low-temperature conditions,***,three lncRNAs were predicted to be competing endogenous RNAs(ceRNAs)that interact with the microRNAs involved in fruit senescence,while one and two ceRNAs were involved in fruit senescence under high-and low-temperature conditions,respectively.A dual-luciferase assay showed that the interaction of an lncRNA with a microRNA disrupts the action of the microRNA on the expression of its target mRNA(s).Furthermore,four alternative splicing-derived lncRNAs interacted with miR172i homologies(Novel_88 and Novel_69)to relieve the repressed expression of their target and produce an miR172i *** analysis of microRNA expression suggested that Novel_69 is likely involved in the cleavage of the pre-miR172i hairpin to generate mature *** together,lncRNAs are involved in pear fruit senescence under high-or low-temperature conditions through ceRNAs and the production of microRNA.

关键词： Pyrus pyrifolia Long non-coding RNA(lncRNA) fruit senescence High-temperature Low-temperature lncRNA-microRNA-mRNA interaction

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