A study on major genes controlling pungency in Capsicum bio-resource and its application for pepper breeding

2014 Fiscal Year Final Research Report

• Project/Area Number: 25892020
• Research Category: Grant-in-Aid for Research Activity Start-up
• Allocation Type: Single-year Grants
• Research Field: Horticultural science
• Research Institution: Okayama University
• Principal Investigator: TANAKA Yoshiyuki 岡山大学, その他の研究科, 助教 (20704480)
• Co-Investigator(Renkei-kenkyūsha): YOSHIDA Yuichi 岡山大学, 環境生命科学研究科, 教授 (00141474) ; GOTO Tanjuro 岡山大学, 環境生命科学研究科, 教授 (40195938) ; YASUBA Kenichiro 岡山大学, 環境生命科学研究科, 准教授 (60343977)
• Project Period (FY): 2013-08-30 – 2015-03-31
• Keywords: トウガラシ / カプサイシン / 遺伝資源

Outline of Final Research Achievements

The pungent component in Capsicum fruits is capsaicinoid. The understanding of the controlling capsaicinoid biosynthesis is important to allow the breeding and improvement of peppers.　The aim of this study was to identify major genes controlling pungency in Capsicum. In this study, we identified non-functional alleles of putative aminotransferase (pAMT) as the main and most frequent gene controlling low pungency in C. chinense. pAMT catalyzes the formation of precursor in the capsaicinoid biosynthetic pathway. In addition, we found a non-pungent C. baccatum accession. It will be useful for future breeding of sweet peppers.

Free Research Field

園芸科学