Molecular phylogeny of the subgenus Ceratotropis (genus Vigna, Leguminosae) reveals three eco-geographical groups and Late Pliocene–Pleistocene diversification: evidence from four plastid DNA region sequences

Abstract

The findings provide an improved understanding of the interspecific relationships, and ecological and geographical phylogenetic structure of the subgenus Ceratotropis. The quaternary diversification of the subgenus Ceratotropis implicates its geographical dispersal in the south-eastern part of Asia involving adaptation to climatic condition after the collision of the Indian subcontinent with the Asian plate. The phylogenetic results indicate that the epigeal germination is plesiomorphic, and the germination type evolved independently multiple times in this subgenus, implying its limited taxonomic utility.

Genome sequence of mungbean and insights into evolution within Vigna species

“…One was found to be closely related to diploid V. trinervia (Fig. 3), in agreement with previous chloroplast results32 and suggesting that V. trinervia or a close ally was the maternal progenitor of the allopolyploid. A maximum date for the polyploidy event of 0.09 MYA is given by the divergence between these two OTUs.…”

“…Asian Vigna species (subgenus Ceratotropis) are morphologically and physiologically diverse, consistent with their distribution across South, Southeast and East Asia, extending from tropical regions to the Himalayan highlands32. Subgenus Ceratotropis has been divided into three taxonomic groups (Angulares, Ceratotropis and Aconitifoliae) based on its morphological characters such as seedling germination, floral size and growth habit30.…”

Adaptation to a Novel Host by a Seed Beetle (Coleoptera: Chrysomelidae: Bruchinae): Effect of Source Population

“…For all three Þtness components, the initial disparity in performance between the ancestral and novel hosts was less for the Asian population than for the African population, perhaps because adzuki bean is more closely related to mung bean than to cowpea (Javadi et al 2011). For two of the traits, however, the response to selection was clearly stronger in the African population.…”

“…Given the circumstances of their original collection and subsequent laboratory maintenance, it is likely that neither population has encountered adzuki bean as a potential grain-legume host. Like mung bean, adzuki bean is a member of the Asian subgenus, Ceratropis, whereas cowpea is a member of the African subgenus, Vigna (Javadi et al 2011). Thus, adzuki bean is more closely related to the ancestral host of the Asian beetle population than to that of the African population.…”

Pollen morphology of Asian Vigna species (genus Vigna; subgenus Ceratotropis)from India and its taxonomic implications

“…The sectional classification of subgenus Ceratotropis was confirmed by several researchers (Jaaska and Jaaska, 1990;Kaga et al, 1996;Doi et al, 2002;Konarev et al, 2002;Tomooka et al, 2002aTomooka et al, , 2002bSaini et al, 2008). Moreover, morphological studies and molecular approaches have been used efficiently for the taxonomy of the subgenus Ceratotropis (Verdcourt, 1970;Maréchal et al, 1978;Egawa and Tomooka, 1994;Lawn, 1995;Tateishi, 1996;Doi et al, 2002;Goel et al, 2002;Tateishi and Maxted, 2002;Tomooka et al, 2002b;Bisht et al, 2005;Tun and Yamaguchi, 2007;Saini et al, 2008;Saini and Jawali, 2009;Vir et al, 2010;Dixit et al, 2011;Javadi et al, 2011;Aitawade et al, 2012;Latha et al, 2014;Yadav et al, 2014).…”