Type

Journal Article

Authors

Jacqueline M. Nugent
Mario A. Fares
David A. Fitzpatrick
Wesley Reardon

Subjects

Biology

Topics
genes single shape syndrome plantago evolution species expression

Evolution of flower shape in Plantago lanceolata (2009)

Abstract Plantago lanceolata produces small actinomorphic (radially symmetric), wind-pollinated flowers that have evolved from a zygomorphic, biotically pollinated ancestral state. To understand the developmental mechanisms that might underlie this change in flower shape, and associated change in pollination syndrome, we analyzed the role of CYC-like genes in P. lanceolata. Related zygomorphic species have two CYC-like genes that are expressed asymmetrically in the dorsal region of young floral meristems and in developing flowers, where they affect the rate of development of dorsal petals and stamens. Plantago has a single CYC-like gene (PlCYC) that is not expressed in early floral meristems and there is no apparent asymmetry in the pattern of PlCYC expression during later flower development. Thus, the evolution of actinomorphy in Plantago correlates with loss of dorsal-specific CYC-like gene function. PlCYC is expressed in the inflorescence stem, in pedicels, and relatively late in stamen development, suggesting a novel role for PlCYC in compacting the inflorescence and retarding stamen elongation in this wind pollinated species.
Collections Ireland -> Maynooth University -> Academic Unit = Faculty of Science and Engineering: Biology
Ireland -> Maynooth University -> Type = Article
Ireland -> Maynooth University -> Status = Published

Full list of authors on original publication

Jacqueline M. Nugent, Mario A. Fares, David A. Fitzpatrick, Wesley Reardon

Experts in our system

1
Jacqueline M. Nugent
Maynooth University
Total Publications: 7
 
2
Mario Ali Fares
Trinity College Dublin
Total Publications: 43
 
3
David A. Fitzpatrick
Maynooth University
Total Publications: 63
 
4
Wesley Reardon
Maynooth University
Total Publications: 5