scholarly journals Genomic dissection of pod shattering in common bean: mutations at non‐orthologous loci at the basis of convergent phenotypic evolution under domestication of leguminous species

2019 ◽  
Vol 97 (4) ◽  
pp. 693-714 ◽  
Author(s):  
Domenico Rau ◽  
Maria L. Murgia ◽  
Monica Rodriguez ◽  
Elena Bitocchi ◽  
Elisa Bellucci ◽  
...  
Keyword(s):  
Common Bean ◽  
Phenotypic Evolution ◽  
Pod Shattering ◽  
Leguminous Species ◽  
Orthologous Loci

scholarly journals Pod indehiscence in common bean is associated to the fine regulation of PvMYB26

2020 ◽  
Author(s):  
Valerio Di Vittori ◽  
Elena Bitocchi ◽  
Monica Rodriguez ◽  
Saleh Alseekh ◽  
Elisa Bellucci ◽  
...  
Keyword(s):  
Common Bean ◽  
Histological Analysis ◽  
Introgression Line ◽  
Genomic Region ◽  
Abscission Layer ◽  
Major Locus ◽  
Pod Shattering ◽  
Pod Development ◽  
Fine Regulation ◽  
Orthologous Loci

Abstract In legumes, pod shattering occurs when mature pods dehisce along the sutures, and detachment of the valves promotes seed dispersal. In Phaseolus vulgaris (L)., the major locus qPD5.1-Pv for pod indehiscence was identified recently. We developed a BC4/F4 introgression line population and narrowed the major locus down to a 22.5-kb region. Here, gene expression and a parallel histological analysis of dehiscent and indehiscent pods identified an AtMYB26 orthologue as the best candidate for loss of pod shattering, on a genomic region ~11 kb downstream of the highest associated peak. Based on mapping and expression data, we propose early and fine up-regulation of PvMYB26 in dehiscent pods. Detailed histological analysis establishes that pod indehiscence is associated to the lack of a functional abscission layer in the ventral sheath, and that the key anatomical modifications associated with pod shattering in common bean occur early during pod development. We finally propose that loss of pod shattering in legumes resulted from histological convergent evolution and that it is the result of selection at orthologous loci.

scholarly journals Toward the introgression of PvPdh1 for increased resistance to pod shattering in common bean

2020 ◽  
Author(s):  
Travis A. Parker ◽  
Lorenna Lopes de Sousa ◽  
Talissa de Oliveira Floriani ◽  
Antonia Palkovic ◽  
Paul Gepts
Keyword(s):  
Common Bean ◽  
Pod Shattering

scholarly journals Pod indehiscence in common bean is associated to the fine regulation of PvMYB26 and a non-functional abscission layer

2020 ◽  
Author(s):  
Valerio Di Vittori ◽  
Elena Bitocchi ◽  
Monica Rodriguez ◽  
Saleh Alseekh ◽  
Elisa Bellucci ◽  
...  
Keyword(s):  
Gene Expression ◽  
Common Bean ◽  
Histological Analysis ◽  
Introgression Line ◽  
Genomic Region ◽  
Abscission Layer ◽  
Major Locus ◽  
Pod Shattering ◽  
Pod Development ◽  
Fine Regulation

ABSTRACTIn legumes, pod shattering occurs when mature pods dehisce along the sutures, and detachment of the valves promotes seed dispersal. In Phaseolus vulgaris, the major locus qPD5.1-Pv for pod indehiscence was identified recently. We developed a BC4/F4 introgression line population and narrowed the major locus down to a 22.5-kb region. Here, gene expression and a parallel histological analysis of dehiscent and indehiscent pods identified an AtMYB26 orthologue as the best candidate for loss of pod shattering, on a genomic region ~11 kb downstream of the highest associated peak. Based on mapping and expression data, we propose early and fine up-regulation of PvMYB26 in dehiscent pods. Detailed histological analysis establishes that pod indehiscence is associated to the lack of a functional abscission layer in the ventral sheath, and that the key anatomical modifications associated with pod shattering in common bean occur early during pod development. We finally propose that loss of pod shattering in legumes resulted from histological convergent evolution and that this is the result of selection at orthologous loci.One-sentence summaryA non-functional abscission layer determines the loss of pod shattering; mapping data, and parallel gene expression and histological analysis support PvMYB26 as the candidate gene for pod indehiscence.

scholarly journals A Comprehensive Phenotypic Investigation of the “Pod-Shattering Syndrome” in Common Bean

2017 ◽  
Vol 8 ◽  
Author(s):  
Maria L. Murgia ◽  
Giovanna Attene ◽  
Monica Rodriguez ◽  
Elena Bitocchi ◽  
Elisa Bellucci ◽  
...  
Keyword(s):  
Common Bean ◽  
Pod Shattering

Utilization of the acetylene reduction assay to screen for tolerance of symbiotic N2 fixation to limiting P nutrition in common bean

1997 ◽  
Vol 99 (2) ◽  
pp. 227-232
Author(s):  
Vincent Vadez ◽  
Douglas P. Beck ◽  
Jesus H. Lasso ◽  
Jean-Jacques Drevon
Keyword(s):  
Common Bean ◽  
N2 Fixation ◽  
Acetylene Reduction ◽  
Acetylene Reduction Assay ◽  
Symbiotic N2 Fixation ◽  
P Nutrition ◽  
Reduction Assay

Effects of hydroponic culture system and NaCl on interactions between common bean lines and native rhizobia from Tunisian soils

Agronomie ◽  
2001 ◽  
Vol 21 (6-7) ◽  
pp. 601-605 ◽  
Author(s):  
Moez Jebara ◽  
Jean-Jacques Drevon ◽  
Mohamed Elarbi Aouani
Keyword(s):  
Common Bean ◽  
Culture System ◽  
Hydroponic Culture

Performance Evaluation of Grain Yield and Yield Related Traits in Common bean Genotypes at Yabello and Abaya, Southern Ethiopia

1970 ◽  
Vol 3 ◽  
pp. 28-34
Author(s):  
Ejigu Ejara, Wassu Mohammed, Berhanu Amsalu ◽  
Zinash Misgana, Mulatu Gabisa, Ganane Tasama
Keyword(s):  
Grain Yield ◽  
Common Bean ◽  
Agronomic Traits ◽  
Southern Ethiopia ◽  
Design Data ◽  
Nutrition Security ◽  
Lattice Design ◽  
Food And Nutrition ◽  
Borana Zone ◽  
Home Consumption

Common bean is among the major crops grown in southern Ethiopia including Borana zone where the majority of the farmers are Agro-pastoralist and produce the crop mainly for home consumption. The area has potential to the production of common bean for food and nutrition security as well as export commodity. However, scarcity of varieties that fit to the environment is one of the major constraints of production. Therefore, this experiment was conducted to evaluate 36 common bean genotypes including seven released varieties to evaluate performance of genotypes for yield and agronomic traits. The field experiment was conducted in 2015 at two locations (Abaya and Yabello) and genotypes were planted in triple lattice design. Data were collected on yield and important agronomic traits. Analysis of variance computed for individual locations and combined analysis over locations revealed significant variations among genotypes for all traits. Moreover, 16.67% of the genotypes had mean grain yield greater than the best performing released variety across locations and the genotypes showed a grain yield as high as 3.25 tons ha-1. Based on results of this study it is recommended to test the high yielding and early maturing genotypes at many locations to develop preferred varieties across many locations.

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