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

Khan, Muhammad Ramzan

Couverture souple

ISBN 10 : 3659829463 ISBN 13 : 9783659829468

Editeur : LAP LAMBERT Academic Publishing, 2016

Synopsis

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.

Détails de l'édition

• Éditeur: LAP LAMBERT Academic Publishing
• Date d'édition: 2016
• Langue: anglais
• ISBN 10: 3659829463
• ISBN 13: 9783659829468
• Reliure: Broché
• Nombre de pages: 144
• Coordonnées du fabricant: non disponible
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