Analysis of pod structure responsible for soybean shattering resistance

2014 Fiscal Year Final Research Report

• Project/Area Number: 24580017
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Crop science/Weed science
• Research Institution: Hokkaido University
• Principal Investigator: FUJINO Kaien 北海道大学, (連合)農学研究科(研究院), 准教授 (80229020)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: ダイズ / 裂莢 / 形成性操作タンパク質 / ディリジェントタンパク質

Outline of Final Research Achievements

Pod dehiscence (shattering) causes a significant yield loss in legume crops. However, little is known about the genetic basis of the shattering resistance in those crops. Map-based cloning of a major quantitative trait locus controlling pod dehiscence in soybean and complementation test revealed that the gene identified, Pdh1, encoded a dirigent-like protein. In shattering-resistant cultivars, the gene was defective with a premature stop codon. Functional Pdh1 was specifically expressed in pod walls. Comparison of near-isogenic lines indicated that Pdh1 regulate torsion of dried pod walls, which functions as force to dehisce binding of pod walls. These findings provide useful information for plant breeding and point to a new biological role for the dirigent-like proteins.

Free Research Field

作物生産科学