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Acta Horticulturae Sinica ›› 2022, Vol. 49 ›› Issue (1): 73-85.doi: 10.16420/j.issn.0513-353x.2021-0277

• Research Papers • Previous Articles     Next Articles

Identification and Expression Analysis of CESA Gene Family in Hibiscus esculentus

LI Yongping, CHEN Mindong, LIU Jianting, Zeng Meijuan, ZHU Haisheng(), WEN Qingfang()   

  1. Fujian Key Laboratory of Vegetable Genetics and Breeding/Crops Research Institute,Fujian Academy of Agricultural Sciences/Vegetable Research Center,Fujian Academy of Agricultural Sciences,Fuzhou 350013,China
  • Received:2021-05-24 Revised:2022-01-06 Online:2022-01-25 Published:2022-01-24
  • Contact: ZHU Haisheng,WEN Qingfang E-mail:zhs0246@163.com;fjvrc@163.com

Abstract:

In order to study the aging mechanism of Hibiscus esculentus fruit,the changes of cellulose content were measured during fruit development and postharvest period,and the distribution of cell structures were observed by microscope. The results showed that during the aging process of H. esculentus fruit,the content of cellulose increased greatly. It was suggested that the increase of cellulose was the main factor of fruit aging. Moreover,nine fragments annotated as CESA gene family were screened from the RNA-seq database of H. esculentus fruit,then the full-length cDNA sequences of CESA1,CESA2,CESA3,CESA4,CESA6,CESA7,CESA8 genes and CESA5and CESA9 gene fragments were cloned. Expression of these nine genes of cellulose synthase gene family in H. esculentus was analyzed by fluorescence quantitative PCR. The results showed HeCESA1,HeCESA3 and HeCESA6had the same expression pattern

and conserved sequences CQIC and SVICEXWF motifs of primary cell wall specific CESAs. HeCESA4,HeCESA8 and HeCESA7 had the same expression pattern,and their expression levels were significantly up-regulated during fruit development and postharvest storage when cellulose increased significantly,which was much higher than that of other CESA genes at the same period. It can be inferred that HeCESA4,HeCESA8and HeCESA7 play an important role in cellulose synthesis of H. esculentus fruit during senescence.

Key words: Hibiscus esculentus, aging, cellulose, cellulose synthase gene

CLC Number: