Phaseolin-protein Variability in Wild Forms and Landraces of the Common Bean(Phaseolus vulgaris): Evidence for Multiple Centers of Domestication

Gepts, Paul; Osborn, Thomas C.; Rashka, Kay; Bliss, F. A.

doi:10.1007/bf02859659

Cited by 461 publications

(373 citation statements)

References 18 publications

Supporting

Mentioning

324

Contrasting

Unclassified

Order By: Relevance

“…Our result identiWed common beans from this region as distinguishable into both Andean and Mesoamerican genepools as described by various authors (Gepts et al 1986;Singh et al 1991a, b, c;Becerra and Gepts 1994;Islam et al 2002;Blair et al 2006Blair et al , 2009. The conservation of the genepool separation typical of the primary centers of diversity has been observed before for bean in southern Africa (Martin and Adams 1987) and is also a hallmark of bean diversity in other secondary centers of diversity outside of the Americas, such as Southwest Europe (Rodiño et al 2006) and China (Zhang et al 2008).…”

Section: Discussionsupporting

confidence: 83%

“…The multiple regions of domestications endowed the crop with relatively high diversity that is broadly classiWed into two genepools: Mesoamerican and Andean (Gepts et al 1986;Singh et al 1991a, b, c). The two genepools further diVerentiate into diVerent races, such as Mesoamerica, Durango, Jalisco and Guatemala in the Mesoamerican genepool and Nueva Granada, Peru and Chile in the Andean genepool (Singh et al 1991b;Beebe et al 2000).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Genetic diversity and population structure of common bean (Phaseolus vulgaris L.) landraces from the East African highlands

Asfaw¹,

2009

View full text Add to dashboard Cite

The East African highlands are a region of important common bean production and high varietal diversity for the crop. The objective of this study was to uncover the diversity and population structure of 192 landraces from Ethiopia and Kenya together with four genepool control genotypes using morphological phenotyping and microsatellite marker genotyping. The germplasm represented diVerent common bean production ecologies and seed types common in these countries. The landraces showed considerable diversity that corresponded well to the two recognized genepools (Andean and Mesoamerican) with little introgression between these groups. Mesoamerican genotypes were predominant in Ethiopia while Andean genotypes were predominant in Kenya. Within each country, landraces from diVerent collection sites were clustered together indicating potential gene Xow between regions within Kenya or within Ethiopia. Across countries, landraces from the same country of origin tended to cluster together indicating distinct germplasm at the national level and limited gene Xow between the two countries highlighting divided social networks within the regions and a weak trans-national bean seed exchange especially for landrace varieties. One exception to this may be the case of small red-seeded beans where informal cross-border grain trade occurs. We also observed that genetic divergence was slightly higher for the Ethiopian landraces compared to Kenyan landraces and that Mesoamerican genotypes were more diverse than the Andean genotypes. Common beans in eastern Africa are often cultivated in marginal, riskprone farming systems and the observed landrace diversity should provide valuable alleles for adaptation to stressful environments in future breeding programs in the region.

show abstract

Section: Discussionsupporting

confidence: 83%

Section: Introductionmentioning

confidence: 99%

Genetic diversity and population structure of common bean (Phaseolus vulgaris L.) landraces from the East African highlands

Asfaw¹,

2009

View full text Add to dashboard Cite

show abstract

“…Wild common bean is organized into two genetically different gene pools (Mesoamerican and Andean) (Koenig and Gepts 1989;Kwak and Gepts 2009;Mamidi et al 2013), with a broad environmental distribution in Mexico and Central to South America (Cortés et al 2013). These two gene pools were independently domesticated in what is now Mexico and South America (Gepts et al 1986;Bitocchi et al 2013) about 8,000 years ago. The release of a reference P. vulgaris genome sequence (Schmutz et al 2014), together with the development and application of Next Generation Sequencing technologies in plant species (Bräutigam and Gowik 2010) and synteny among plants, such as soybean and Arabidopsis, enabled a genome-wide identification of actual or putative loci involved in the domestication process of this species (Repinski et al 2012;Kwak et al 2012;Bellucci et al 2014;Schmutz et al 2014).…”

Section: Introductionmentioning

confidence: 99%

Genome-wide identification and characterization of aquaporin gene family in common bean (Phaseolus vulgaris L.)

Ariani

Gepts

2015

Mol Genet Genomics

View full text Add to dashboard Cite

Plant Aaquaporins are a large and diverse family of water channel proteins that are essential for several physiological processes in living organisms. in all living organisms. In plants, this family has the highest diversity of protein isoforms and substrate specificities compared to animals and bacteria. Numerous studies have linked plant aquaporins with a plethora of processes, such as nutrient acquisition, CO 2 transport, plant growth and development, and response to abiotic stresses.However, little is knowns about this protein family in common bean. Here, we present a genomewide identification of the aquaporin gene family in common bean (Phaseolus vulgaris L.), a legume crop essential for human nutrition. We identified 41 full-length coding aquaporin sequences in the common bean genome, divided by phylogenetic analysis into five sub-families (PIPs, TIPs, NIPs, SIPs and XIPs). Residues determining substrate specificity of aquaporins (i.e., NPA motifs and ar/R selectivity filter) seem conserved between common bean and other plant species, allowing inference of substrate specificity for these proteins. Thanks to the availability of RNA-sequencing datasets, expression levels in different organs and in leaves of wild and domesticated bean accessions were evaluated. Three aquaporins (PvTIP1;1, PvPIP2;4 and PvPIP1;2) have the overall highest mean expressions, with PvTIP1;1 having the highest expression among all aquaporins. We performed an EST database mining to identify drought responsive aquaporins in common bean. This analysis showed a significant increase in expression for PvTIP1;1 in drought stress conditions compared to well-watered environments. The pivotal role suggested for PvTIP1;1 in regulating water homeostasis and drought stress response in the common bean, should be verified by further field experimentation under drought stress.

show abstract

“…These two gene pools are characterized by partial reproductive isolation (3,4), and they are seen in both wild and domesticated materials. They have been recognized in several studies based on morphology (5-7), agronomic traits (7), seed proteins (8), allozymes (9), and different types of molecular markers (10)(11)(12)(13)(14)(15), which have given the overall indication of the occurrence of at least two independent domestication events in the two different hemispheres. The existence of these two geographically distinct and isolated evolutionary lineages that predate the domestication of the common bean represents a unique scenario among crops.…”

mentioning

confidence: 99%

Mesoamerican origin of the common bean ( Phaseolus vulgaris L.) is revealed by sequence data

Bitocchi

Nanni

Bellucci

et al. 2012

Proc. Natl. Acad. Sci. U.S.A.

327

299

View full text Add to dashboard Cite

Knowledge about the origins and evolution of crop species represents an important prerequisite for efficient conservation and use of existing plant materials. This study was designed to solve the ongoing debate on the origins of the common bean by investigating the nucleotide diversity at five gene loci of a large sample that represents the entire geographical distribution of the wild forms of this species. Our data clearly indicate a Mesoamerican origin of the common bean. They also strongly support the occurrence of a bottleneck during the formation of the Andean gene pool that predates the domestication, which was suggested by recent studies based on multilocus molecular markers. Furthermore, a remarkable result was the genetic structure that was seen for the Mesoamerican accessions, with the identification of four different genetic groups that have different relationships with the sets of wild accessions from the Andes and northern Peru–Ecuador. This finding implies that both of the gene pools from South America originated through different migration events from the Mesoamerican populations that were characteristic of central Mexico

show abstract

Phaseolin-protein Variability in Wild Forms and Landraces of the Common Bean(Phaseolus vulgaris): Evidence for Multiple Centers of Domestication

Cited by 461 publications

References 18 publications

Genetic diversity and population structure of common bean (Phaseolus vulgaris L.) landraces from the East African highlands

Genetic diversity and population structure of common bean (Phaseolus vulgaris L.) landraces from the East African highlands

Genome-wide identification and characterization of aquaporin gene family in common bean (Phaseolus vulgaris L.)

Mesoamerican origin of the common bean ( Phaseolus vulgaris L.) is revealed by sequence data

Contact Info

Product

Resources

About