Pod indehiscence in common bean is associated with the fine regulation of PvMYB26

Bibliographische Detailangaben
Veröffentlicht in:	Journal of experimental botany. - 1985. - 72(2021), 5 vom: 27. Feb., Seite 1617-1633
1. Verfasser:	Di Vittori, Valerio (VerfasserIn)
Weitere Verfasser:	Bitocchi, Elena, Rodriguez, Monica, Alseekh, Saleh, Bellucci, Elisa, Nanni, Laura, Gioia, Tania, Marzario, Stefania, Logozzo, Giuseppina, Rossato, Marzia, De Quattro, Concetta, Murgia, Maria L, Ferreira, Juan José, Campa, Ana, Xu, Chunming, Fiorani, Fabio, Sampathkumar, Arun, Fröhlich, Anja, Attene, Giovanna, Delledonne, Massimo, Usadel, Björn, Fernie, Alisdair R, Rau, Domenico, Papa, Roberto
Format:	Online-Aufsatz
Sprache:	English
Veröffentlicht:	2021
Zugriff auf das übergeordnete Werk:	Journal of experimental botany
Schlagworte:	Journal Article Research Support, Non-U.S. Gov't MYB26 Phaseolus vulgaris L Common bean convergent evolution gene expression genome-wide association study introgression lines pod anatomy pod shattering

Beschreibung
Zusammenfassung:	© The Author(s) 2020. Published by Oxford University Press on behalf of the Society for Experimental Biology. 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 with 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
Beschreibung:	Date Completed 20.05.2021 Date Revised 10.11.2023 published: Print Citation Status MEDLINE
ISSN:	1460-2431
DOI:	10.1093/jxb/eraa553