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The origin of floral organ identity quartets

Philip Ruelens, Zhicheng Zhang, Hilda van Mourik, Steven Maere UGent, Kerstin Kaufmann and Koen Geuten (2017) PLANT CELL. 29(2). p.229-242
abstract
The origin of flowers has puzzled plant biologists ever since Darwin referred to their sudden appearance in the fossil record as an abominable mystery. Flowers are considered to be an assembly of protective, attractive, and reproductive male and female leaf-like organs. Their origin cannot be understood by a morphological comparison to gymnosperms, their closest relatives, which develop separate male or female cones. Despite these morphological differences, gymnosperms and angiosperms possess a similar genetic toolbox consisting of phylogenetically related MADS domain proteins. Using ancestral MADS domain protein reconstruction, we trace the evolution of organ identity quartets along the stem lineage of crown angiosperms. We provide evidence that current floral quartets specifying male organ identity, which consist of four types of subunits, evolved from ancestral complexes of two types of subunits through gene duplication and integration of SEPALLATA proteins just before the origin of flowering plants. Our results suggest that protein interaction changes underlying this compositional shift were the result of a gradual and reversible evolutionary trajectory. Modeling shows that such compositional changes may have facilitated the evolution of the perfect, bisexual flower.
Please use this url to cite or link to this publication:
author
organization
year
type
journalArticle (original)
publication status
published
subject
keyword
MADS-BOX GENES, GLUCOCORTICOID-RECEPTOR EVOLUTION, GYMNOSPERM GNETUM-GNEMON, FLOWER DEVELOPMENT, MOLECULAR-MECHANISMS, MAXIMUM-LIKELIHOOD, AGAMOUS SUBFAMILY, ANGIOSPERMS, DIVERSIFICATION, PROTEINS
journal title
PLANT CELL
Plant Cell
volume
29
issue
2
pages
229 - 242
Web of Science type
Article
Web of Science id
000397251300006
ISSN
1040-4651
1532-298X
DOI
10.1105/tpc.16.00366
language
English
UGent publication?
yes
classification
A1
copyright statement
I have transferred the copyright for this publication to the publisher
id
8518211
handle
http://hdl.handle.net/1854/LU-8518211
date created
2017-04-20 11:27:52
date last changed
2017-08-01 09:51:55
@article{8518211,
  abstract     = {The origin of flowers has puzzled plant biologists ever since Darwin referred to their sudden appearance in the fossil record as an abominable mystery. Flowers are considered to be an assembly of protective, attractive, and reproductive male and female leaf-like organs. Their origin cannot be understood by a morphological comparison to gymnosperms, their closest relatives, which develop separate male or female cones. Despite these morphological differences, gymnosperms and angiosperms possess a similar genetic toolbox consisting of phylogenetically related MADS domain proteins. Using ancestral MADS domain protein reconstruction, we trace the evolution of organ identity quartets along the stem lineage of crown angiosperms. We provide evidence that current floral quartets specifying male organ identity, which consist of four types of subunits, evolved from ancestral complexes of two types of subunits through gene duplication and integration of SEPALLATA proteins just before the origin of flowering plants. Our results suggest that protein interaction changes underlying this compositional shift were the result of a gradual and reversible evolutionary trajectory. Modeling shows that such compositional changes may have facilitated the evolution of the perfect, bisexual flower.},
  author       = {Ruelens, Philip and Zhang, Zhicheng and van Mourik, Hilda and Maere, Steven and Kaufmann, Kerstin and Geuten, Koen},
  issn         = {1040-4651},
  journal      = {PLANT CELL},
  keyword      = {MADS-BOX GENES,GLUCOCORTICOID-RECEPTOR EVOLUTION,GYMNOSPERM GNETUM-GNEMON,FLOWER DEVELOPMENT,MOLECULAR-MECHANISMS,MAXIMUM-LIKELIHOOD,AGAMOUS SUBFAMILY,ANGIOSPERMS,DIVERSIFICATION,PROTEINS},
  language     = {eng},
  number       = {2},
  pages        = {229--242},
  title        = {The origin of floral organ identity quartets},
  url          = {http://dx.doi.org/10.1105/tpc.16.00366},
  volume       = {29},
  year         = {2017},
}

Chicago
Ruelens, Philip, Zhicheng Zhang, Hilda van Mourik, Steven Maere, Kerstin Kaufmann, and Koen Geuten. 2017. “The Origin of Floral Organ Identity Quartets.” Plant Cell 29 (2): 229–242.
APA
Ruelens, P., Zhang, Z., van Mourik, H., Maere, S., Kaufmann, K., & Geuten, K. (2017). The origin of floral organ identity quartets. PLANT CELL, 29(2), 229–242.
Vancouver
1.
Ruelens P, Zhang Z, van Mourik H, Maere S, Kaufmann K, Geuten K. The origin of floral organ identity quartets. PLANT CELL. 2017;29(2):229–42.
MLA
Ruelens, Philip, Zhicheng Zhang, Hilda van Mourik, et al. “The Origin of Floral Organ Identity Quartets.” PLANT CELL 29.2 (2017): 229–242. Print.