Journal of Zhejiang Agricultural Sciences ›› 2026, Vol. 67 ›› Issue (4): 878-883.DOI: 10.16178/j.issn.0528-9017.20250792

Previous Articles     Next Articles

VIGS mediated NtHD20 gene silencing promotes tobacco glandular trichome pilogenesis

XU Mingkai1(), GAO Xin2, WANG Dong2, LU Yutong2, LI Hongtao2, CHEN Mengqi2, DUAN Weidong2, SHEN Hongtao2, XU Shixiao1()   

  1. 1.College of Tobacco,Henan Agricultural University,Zhengzhou 450002,Henan
    2.Henan Tobacco Industry Co. ,Ltd. ,Zhengzhou 450016,Henan
  • Received:2025-10-24 Online:2026-04-11 Published:2026-04-17
  • Contact: XU Shixiao

Abstract:

This study used the wild-type strain 8306(WT),homozygous edited strain(KD),and overexpressed strain(OE)as materials to investigate the effects of virus-induced gene silencing(VIGS)targeting the NtHD20 gene on the glandular trichome phenotype,glandular trichome density,content of glandular trichome secretions,and expression levels of key biosynthesis genes of glandular trichome secretions in all tobacco lines. The results showed that silencing the NtHD20 gene resulted in an extremely significant(p<0.01)increase in leaf glandular trichome density,a significant(p<0.05)increase in content of glandular trichome secretions,and expression levels of key biosynthesis genes of glandular trichome secretions in all tobacco strains. Silencing NtHD20 with VIGS technology can promote the development of tobacco glandular trichome and increase the content of cembratrieneols substances. It is speculated that the NtHD20 gene may have a negative regulatory effect on the development of the tobacco glandular trichome,providing a new direction for improving the tobacco glandular trichome.

Key words: tobacco glandular trichome, glandular trichome secretion, virus-induced gene silencing

CLC Number: