ACTA AGRICULTURAE BOREALI-SINICA ›› 2021, Vol. 36 ›› Issue (4): 64-74. doi: 10.7668/hbnxb.20192151

Special Issue: Biotechnology

• Crop Genetics & Breeding·Germplasm Resources·Biotechnology • Previous Articles     Next Articles

Cloning,Expression and Functional Analysis of HcMS1 Gene from Kenaf

CHEN Wentao, PAN Gen, TANG Huijuan, CHANG Li, LI Defang, ZHAO Lining, CHEN Anguo, LI Jianjun   

  1. Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, Changsha 410205, China
  • Received:2021-03-01 Published:2021-08-28

Abstract: To explore the male sterile gene of kenaf and explain the molecular mechanism of flower bud abortion, the transcriptome data was analyzed and the homologous male sterile gene of Arabidopsis thaliana MALE STERILITY1(MS1) was cloned from kenaf anther by homologous cloning, named HcMS1. The structure, physicochemical properties and genetic relationship of HcMS1 protein were analyzed by bioinformatics method, and the expression level of HcMS1 gene in kenaf male sterile line and maintainer at different stages was analyzed by qRT-PCR. Through the construction of over-expression vector, the transgenic tobacco was transformed by leaf disc method, and the phenotype of transgenic tobacco was observed. The open reading frame(ORF) of HcMS1 was 1 950 bp, encoding 649 amino acids. Bioinformatics analysis showed that HcMS1 protein was hydrophilic, located in the nucleus and contained typical PHD-finger domain, without signal peptide and transmembrane domain structure. It had the closest relationship with Gossypium hirsutum MS1 protein, followed by Hibiscus syriacus MS1 protein. qRT-PCR results showed that the expression level of HcMS1 gene in maintainer and male sterile line increased first and then decreased, and the highest expression level was found in the tetrad to mononuclear stage of kenaf buds, which was consistent with the expression pattern of MS1 in Arabidopsis thaliana;In addition, the expression level of HcMS1 gene in maintainer was significantly higher than that in male sterile line, suggesting that the kenaf abortion was related to the low expression of HcMS1 gene. Through genetic transformation experiment, it was found that HcMS1 transgenic tobacco had shorter plant type, different calyx size, shorter anther length and could not produce seeds, which indicated that expression of kenaf HcMS1 heterologous gene could affect the normal fertility of tobacco.We successfully cloned HcMS1 gene from kenaf anther, and analyzed its function, which provided a theoretical basis for subsequent kenaf male sterility breeding.

Key words: Kenaf, Male sterility, HcMS1 gene, Bioinformatics analysis, Expression analysis, Tobacco transformation

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Cite this article

CHEN Wentao, PAN Gen, TANG Huijuan, CHANG Li, LI Defang, ZHAO Lining, CHEN Anguo, LI Jianjun. Cloning,Expression and Functional Analysis of HcMS1 Gene from Kenaf[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2021, 36(4): 64-74. doi: 10.7668/hbnxb.20192151.

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