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Acta Horticulturae Sinica ›› 2022, Vol. 49 ›› Issue (6): 1327-1338.doi: 10.16420/j.issn.0513-353x.2021-0468

• Research Papers • Previous Articles     Next Articles

Preliminary Study on the Relationship Between Promoter Sequence Difference of PmTAC1 and Weeping Trait of Prunus mume

LIU Yaoyao, WU Yanyan, Shi Yan, MAO Tianyu, BAO Manzhu, ZHANG Junwei, ZHANG Jie()   

  1. Key Laboratory of Horticultural Plant Biology of Ministry of Education,College of Horticulture and Forestry Science,Huazhong Agricultural University,Wuhan 430070,China
  • Received:2021-12-27 Revised:2022-03-30 Online:2022-06-25 Published:2022-07-05
  • Contact: ZHANG Jie E-mail:flybebrave@mail.hzau.edu.cn

Abstract:

A candidate gene PmTAC1TILLER ANGLE CONTROL 1)of the weeping trait of Prunus mume was cloned and analyzed based on our previous transcriptome data. The coding sequence of PmTAC1 was 915 bp,encoding 304 amino acids,and no differences was observed between upright and weeping cultivars of mei. The amino acid sequence alignment further confirmed that PmTAC1 had the typical domain of the IGT family,and evolutionary analysis showed that the genetic relationship between PmTAC1 and PpeTAC1 was the closest. Prediction of subcellular localization and hydrophobic analysis of protein showed that the protein was located in the nucleus and chloroplast,and was hydrophilic. The expression of PmTAC1 in branches of weeping cultivars was significantly higher than that in 1-year-old branches of upright cultivars,and there were differences in the adaxial and abaxial of the two types of branches. The promoter sequences of PmTAC1 in weeping and upright mei were 1 608 bp and 1 379 bp respectively,which were consistent among different cultivars of the same branch types of mei. Differences were detected in the number of light responses,gibberellin,and abscisic acid response cis-elements between the two promoter sequences. In conclusion,the promoter sequence and expression level of PmTAC1 in weeping and upright cultivars of mei may be related to the formation of weeping traits.

Key words: Prunus mume, weeping trait, PmTAC1, gene cloning, expression

CLC Number: