Molecular Evolution of the Inflated Calyx Syndrome (ICS) in Withania

Muhammad Ramzan Khan

ISBN 10: 3659829463 / ISBN 13: 9783659829468

Editore: LAP LAMBERT Academic Publishing, 2016

Molecular Evolution of the Inflated Calyx Syndrome (ICS) in Withania | Muhammad Ramzan Khan | Taschenbuch | 144 S. | Englisch | 2016 | LAP LAMBERT Academic Publishing | EAN 9783659829468 | Verantwortliche Person für die EU: preigu GmbH & Co. KG, Lengericher Landstr. 19, 49078 Osnabrück, mail[at]preigu[dot]de | Anbieter: preigu. Codice articolo 103987485

Riassunto:

Inflated calyx syndrome (ICS), a morphological novelty in Solanaceae, is controlled by the expression of a MADS-box gene, MPF2-like (WSA206), in the floral tissues of Withania. By exploring the rich diversity of calyx morphology in the related taxa, it is shown that the MPF2-like gene duplication in Withaninae has provided an important playground for new evolutionary innovations. Sub- (neo)-functionalization and gene loss were very important in conjunction with positive Darwinian selection in the evolution of ICS. The expression divergence in MPF2-like genes due to reciprocal loss of cis-regulatory elements has added to genetic and phenotypic variations and enhanced the potential of natural selection for the adaptive evolution of the ICS. Moreover, these results provide insight into integration of floral developmental and hormonal pathways in the ICS development and add to understanding of the importance of polyploidy in plants. The findings reported here will not only explain how the calyx novelty was shaped and maintained in these plants, in a very explicit manner, but also will provide one nice example of using wild ‘evolutionary mutants’ to dissect complex traits variations.

Dati bibliografici

Titolo: Molecular Evolution of the Inflated Calyx ...
Casa editrice: LAP LAMBERT Academic Publishing
Data di pubblicazione: 2016
Legatura: Taschenbuch
Condizione: Neu