The role of temperature adaptation in invasive species under climate change.

2015 Fiscal Year Final Research Report

• Project/Area Number: 25291095
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Ecology/Environment
• Research Institution: Tohoku University
• Principal Investigator: Kouki Hikosaka 東北大学, 生命科学研究科, 教授 (10272006)
• Co-Investigator(Kenkyū-buntansha): Morinaga Shinichi 日本大学, 生物資源科学部, 助教 (80568262)
• Co-Investigator(Renkei-kenkyūsha): Oguchi Riichi 東北大学, 大学院生命科学研究科, 助教 (10632250)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Keywords: 温度適応 / 集団分化 / 侵入種 / 凍結耐性

Outline of Final Research Achievements

We sampled seeds of an invasive species Cardamine hirsuta, which has invaded these four decades and spread in Japan, and those of a native species Cardamine scutata from two latitudinal gradients in East Japan. We studied genetic structure of populations and freezing tolerance. C. hirsuta populations were divided into four groups, suggesting that C. hirsute has invaded at least four times. Freezing tolerance was different between populations, which was correlated with minimum temperature. These results suggest that functional genetic differentiation has been occurred even in species that had invaded recently.

Free Research Field

植物生理生態