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Acta Horticulturae Sinica ›› 2020, Vol. 47 ›› Issue (9): 1705-1714.doi: 10.16420/j.issn.0513-353x.2019-0461

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Advances in Research of the SELF-PRUNING Gene Family and Plant Architecture Regulatory Functions in Tomato

QI Shiming and LIANG Yan*   

  1. (College of Horticulture,Northwest A & F University,Yangling,Shaanxi 712100,China)
  • Online:2020-09-25 Published:2020-09-25

Abstract: The SELF-PRUNING(SP)gene belongs to a class of genes that regulate plant growth habits and flowering,it has been found in tomato to regulate the determinate of growth habits. Furthermore,it is homologous to the CENRORADIALIS(CEN)gene in Antirrhinum majus L. and the TERMINAL FLOWER 1(TFL1)gene in Arabidopsis thaliana. At present,eight members of SP gene family(SP,SP9D,SP2I,SP3D,SP5G,SP6A,SIGI,and SPGB)have been reported. The studies have shown that the family genes should directly or indirectly regulate the growth habits and affect the shoot architecture of tomato plants. Therefore,in this paper,the research on the genetic structure features,genetic relationships,expression characteristics,and plant architecture regulation of the SP family in tomato is reviewed,in order to regulate for growth habits of tomato,obtaining compact strains,achieve homogenization and modern mechanized harvesting,and agronomic traits and provide effective technical support.