RRC ID 36107
Author Matsuoka Y, Takumi S, Kawahara T.
Title Intraspecific lineage divergence and its association with reproductive trait change during species range expansion in central Eurasian wild wheat Aegilops tauschii Coss. (Poaceae).
Journal BMC Evol Biol
Abstract BACKGROUND:How species ranges form in landscapes is a matter of long-standing evolutionary interest. However, little is known about how natural phenotypic variations of ecologically important traits contribute to species range expansion. In this study, we examined the phylogeographic patterns of phenotypic changes in life history (seed production) and phenological (flowering time) traits during the range expansion of Aegilops tauschii Coss. from the Transcaucasus and Middle East to central Asia.
RESULTS:Our comparative analyses of the patterns of natural variations for those traits and their association with the intraspecific lineage structure showed that (1) the eastward expansion to Asia was driven by an intraspecific sublineage (named TauL1b), (2) high seed production ability likely had an important role at the initial dispersal stage of TauL1b's expansion to Asia, and (3) the phenological change to early flowering phenotypes was one of the key adaptation events for TauL1b to further expand its range in Asia.
CONCLUSIONS:This study provides for the first time a broad picture of the process of Ae. tauschii's eastward range expansion in which life history and phenological traits may have had respective roles in its dispersal and adaptation in Asia. The clear association of seed production and flowering time patterns with the intraspecific lineage divergence found in this study invites further genetic research to bring the mechanistic understanding of the changes in these key functional traits during range expansion within reach.
Volume 15
Pages 213
Published 2015-9-30
DOI 10.1186/s12862-015-0496-9
PII 10.1186/s12862-015-0496-9
PMID 26419628
PMC PMC4589133
MeSH Asia Flowers / physiology Genetic Variation Poaceae / classification* Poaceae / genetics* Poaceae / physiology Reproduction Seeds / physiology
IF 3.058
Times Cited 19
Wheat KU-2113 KU-2115 KU-2116 KU-2120 KU-2121 KU-2131 KU-2132 KU-2133 KU-2136 KU-2137 KU-2138 KU-2140 KU-2141 KU-2142 KU-2143 KU-2144 KU-2145 KU-2148 KU-2149 KU-2150 KU-2151 KU-2152 KU-2809 KU-2810 KU-2814 KU-2816 KU-2821 KU-2822A KU-2823 KU-2824 KU-2826 KU-2828 KU-2834 KU-2836 KU-2010 KU-2012 KU-2016 KU-2025 KU-2027 KU-2028 KU-2032 KU-2035 KU-2042 KU-2058 KU-2617 KU-2630 KU-2633 KU-20-6 KU-2001 KU-2003 KU-2006 KU-2008 KU-2018 KU-2022 KU-2039 KU-2043 KU-2044 KU-2050 KU-2051 KU-2056 KU-2059 KU-2061 KU-2063 KU-2066 KU-2082 KU-2087 KU-2612 KU-2621 KU-2624 KU-2627 KU-2632 KU-2635 KU-2636 KU-2638 KU-2639 KU-2122 KU-2153 KU-2157 KU-2068 KU-2154 KU-2619 KU-20-1 KU-20-7 KU-20-8 KU-2083 KU-2086 KU-2111 KU-2112 KU-2118 KU-2124 KU-2126 KU-2155 KU-2156 KU-2804 KU-2811 KU-2806 KU-2827 KU-2835B KU-2069 KU-2093 KU-2097 KU-2104 KU-2109 KU-2158 KU-2159 KU-20-10 KU-2088 KU-2090 KU-2091 KU-2092 KU-2096 KU-2098 KU-2100 KU-2101 KU-2102 KU-2103 KU-2105 KU-2106 KU-2107 KU-2108 KU-2160 KU-2074 KU-2075 KU-2077 KU-2110 KU-2801 KU-20-9 KU-2076 KU-2078 KU-2079 KU-2080 KU-2829A KU-2832