Elucidation of a molecular mechanism of inflorescence development in Tricyrtis spp.

2017 Fiscal Year Final Research Report

• Project/Area Number: 15K07287
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Horticultural science
• Research Institution: Niigata University
• Principal Investigator: Nakano Masaru 新潟大学, 自然科学系, 准教授 (00262460)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Keywords: ホトトギス属植物 / 花序形成 / LEAFY遺伝子 / TFL1遺伝子 / 花き園芸植物 / 形質転換

Outline of Final Research Achievements

The relation between inflorescence architecture and LEAFY (LFY)-like gene was examined by using two Tricyrtis spp. (T. hirta and T. formosana) showing different inflorescence architectures. No differences in the structure, function and expression pattern in young plants of the LFY-like genes were observed between these species. Further expression analysis of the LFY-like genes is necessary at the flowering stage. Transgenic plants ectopically expressing the LFY-like genes showed dwarf and early-flowering phenotypes, indicating a possibility of breeding of ornamental plants by genetic transformation with the LFY-like genes. TFL1-like genes, which have been reported to be expressed antagonistically with LFY-like genes, were then isolated from T. hirta and T. formosana. However, no difference in the estimated amino acid sequence of the TFL1-like genes was observed between these species.

Free Research Field

農学