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Acta Horticulturae Sinica ›› 2021, Vol. 48 ›› Issue (2): 336-346.doi: 10.16420/j.issn.0513-353x.2020-0151

• Research Notes • Previous Articles     Next Articles

Characteristic and Relative Expression Pattern Analysis of FWL/PLAC8 Family in Blueberry

YU Lei1, ZHOU Ya1, ZONG Yu1,2, ZHANG Ying1, QIU Jiaqi1, LI Yongqiang1,2, YANG Li1,2,*(), GUO Weidong1,2,*()   

  1. 1College of Chemistry and Life Sciences,Zhejiang Normal University,Jinhua,Zhejiang 321004,China
    2Zhejiang Provincial Key Laboratory of Biotechnology on Specialty Economic Plants,Zhejiang Normal University,Jinhua,Zhejiang 321004,China
  • Received:2020-05-08 Revised:2020-08-25 Online:2021-02-25 Published:2021-03-09
  • Contact: YANG Li,GUO Weidong E-mail:yangli@zjnu.edu.cn;gwd@zjnu.cn

Abstract:

Fruit size and weight are the most vital agronomic characters for consumers,breeders and researchers,and fruit weight(FW)was reported as an important quantitative trait locus affecting tomato and other fruit weight and size remarkably. In this study,the growth curves during Vaccinium corymbosum ‘O’Neal’(large-size fruit)and‘Bluerain’(small-size fruit)flower bud enlargement and fruit development,and conventionally physical indexes of mature fruits were measured and analyzed. The FWL family with conserved domain PLAC8 in the blueberry genome was identified,and the gene structure, chromosome location,conserved motifs of VcFWL/PLAC8 were analyzed. The relative expression level of VcFWL/PLAC8 genes during‘O’Neal’and‘Bluerain’flower bud enlargement and fruit development was detected by real-time fluorescence quantitative PCR. The results showed that the fruit weight of‘O’Neal’was dramatically higher than that of‘Bluerain’from stage S2,and the locule number,seed number and weight per fruit of‘O’Neal’mature fruits were also notably higher than those of‘Bluerain’. The VcFWL/PLAC8 family contained 11 members with highly conserved motifs in the‘Draper’genome,which can be divided into three clusters. qRT-PCR analysis showed that the expression patterns of A and C subfamilies were consistant with opposite to the cell proliferation trend,while the expression level of B subfamily was relatively low. These results suggested that VcFWL/PLAC8 genes might be involved in fruit growth and development through different regulatory mechanisms and pathways.

Key words: blueberry, FWL/PLAC8, Vaccinium corymbosum, fruit size, fruit development

CLC Number: