Elucidation of the mechanism of bud endodormancy in pear based on their relationship with seed dormancy

2022 Fiscal Year Final Research Report

• Project/Area Number: 20K15519
• Research Category: Grant-in-Aid for Early-Career Scientists
• Allocation Type: Multi-year Fund
• Review Section: Basic Section 39030:Horticultural science-related
• Research Institution: Tottori University
• Principal Investigator: Takemura Yoshihiro 鳥取大学, 農学部, 准教授 (70731545)
• Project Period (FY): 2020-04-01 – 2023-03-31
• Keywords: 休眠

Outline of Final Research Achievements

Comparative transcriptome analysis was performed using pear seeds before and after cold treatment. We obtained about 4.56 Gb of sequencing data per sample and about 45,630,000 reads. 9-cis-epoxycarotenoid dioxygenase (NCED) gene, ABSCISIC ACID-INSENSITIVE-5 (ABI-5) gene, and DELLA protein GAI (GAI) gene were selected as genes whose expression level decreased after low-temperature treatment.

Free Research Field

果樹園芸学

Academic Significance and Societal Importance of the Research Achievements

種子の休眠深度をもとに低温要求量の少ないニホンナシ品種の早期選抜方法の確立が期待される。また、ナシで同定された遺伝子情報や確立される技術は他の落葉果樹でも育種や施設栽培へ応用されるなど、多くの波及効果が見込まれる。