|| 要旨トップ | 本企画の概要 |||日本生態学会第64回全国大会 (2017年3月、東京) 講演要旨
企画集会 T13-5 （Lecture in Workshop）
Both process and consequence of adaptation to environmental variations have been the central issues in evolutionary biology. Adaptation to elevational gradient in a species provides remarkable opportunity in these fields. An allopolyploid herbal plant Arabidopsis kamchatica, closely related to the plant model A. thaliana, adapts to wide elevational range between 0 and 3000 m in Japan. Here we clarified that leaf trichome trait and one homolog gene of GL1 (Ah_GL1), which was associated with trichome presence, were highly diversified between high- and low- altitude populations in the same watershed within 4 - 7 km horizontal distance, in three replicated watersheds in the Northern, Central and Southern Japanese Alps, whilst neutral microsatellites were diversified between watersheds rather than between high- and low- altitude. Trichome-absent phenotype was associated with different types of large insertion in Ah_GL1 in each low-altitude population in different watersheds, suggesting parallel adaptive evolution for the loss of trichome at low altitude.