Traits changing associated with the evolution of body size

2017 Fiscal Year Final Research Report

• Project/Area Number: 16K14803
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Ecology/Environment
• Research Institution: Tohoku University
• Principal Investigator: KAWATA MASAKADO 東北大学, 生命科学研究科, 教授 (90204734)
• Co-Investigator(Renkei-kenkyūsha): SUGIMOTO Asako 東北大学, 生命科学研究科, 教授 (80281715) ; MAKINO Takashi 東北大学, 生命科学研究科, 准教授 (20443442) ; MARUYAMA Shinichro 東北大学, 生命科学研究科, 助教 (50712296) ; YOKOYAMA Jun 山形大学, 理学部, 教授 (80272011)
• Project Period (FY): 2016-04-01 – 2018-03-31
• Keywords: 体サイズ進化 / 線虫

Outline of Final Research Achievements

We purpose to determine candidate genes responsible for the evolution of larger body size of C. inopinata. C. inopinata became larger during developmental L4 to adult stages comparing with C. elegans. Then, we detected 2699 genes which expression patterns differed between C. inopinata and C. elegans. We also detected 42 genes which have been subject to positive selection during the evolution of C. inopinata from other related species. Among them, daf-2 could be detected and this gene encodes the insulin-like growth factor 1 receptor and variant of def-1 in C. elegance became larger. Thus, the results suggest that daf-2 is as an important genes affecting the evolution of large body size of C. inopinata

Free Research Field

進化生態学