Reardon, Wesley and Fitzpatrick, David A. and Fares, Mario A. and Nugent, Jacqueline M.
(2009)
Evolution of flower shape in Plantago lanceolata.
Plant Molecular Biology, 71 (3).
pp. 241-250.
ISSN 0167-4412
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.
| Item Type: |
Article
|
| Keywords: |
Plantago; Flower shape; Protogyny; Wind pollination; CYCLOIDEA; |
| Academic Unit: |
Faculty of Science and Engineering > Biology |
| Item ID: |
7418 |
| Identification Number: |
https://doi.org/10.1007/s11103-009-9520-z |
| Depositing User: |
Dr. Jacqueline Nugent
|
| Date Deposited: |
31 Aug 2016 15:14 |
| Journal or Publication Title: |
Plant Molecular Biology |
| Publisher: |
Springer |
| Refereed: |
Yes |
| URI: |
|
| Use Licence: |
This item is available under a Creative Commons Attribution Non Commercial Share Alike Licence (CC BY-NC-SA). Details of this licence are available
here |
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