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Smoke signals and seed dormancy: where next for MAX2?
Citation
Waters, MT and Smith, SM and Nelson, DC, Smoke signals and seed dormancy: where next for MAX2?, Plant Signaling and Behavior, 6, (9) pp. 1418-1422. ISSN 1559-2324 (2011) [Refereed Article]
Copyright Statement
Copyright 2011 Landes Bioscience
DOI: doi:10.4161/psb.6.9.17303
Abstract
The Arabidopsis thaliana F-box protein MAX2 has been discovered in four separate genetic screens, indicating that it has roles in leaf senescence, seedling photosensitivity, shoot outgrowth, and seed germination. Both strigolactones and karrikins can regulate A. thaliana seed germination and seedling photomorphogenesis in a MAX2-dependent manner, but only strigolactones inhibit shoot branching. How MAX2 mediates specific responses to both classes of structurally-related signals, and the origin of its dual role remains unknown. The moss Physcomitrella patens utilizes strigolactones and MAX2 orthologs are present across the land plants, suggesting that this signaling system could have an ancient origin. The seed of parasitic Orobanchaceae species germinate preferentially in response to strigolactones over karrikins, and putative Orobanchaceae MAX2 orthologs form a sub-clade distinct from those of other dicots. These observations suggest that lineage-specific evolution of MAX2 may have given rise to specialized responses to these signaling molecules.
Item Details
Item Type: | Refereed Article |
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Keywords: | karrikins, strigolactones, F-box protein, seed germination, photomorphogenesis, parasitic weeds, mycorrhiza, moss, axillary branching |
Research Division: | Biological Sciences |
Research Group: | Plant biology |
Research Field: | Plant physiology |
Objective Division: | Expanding Knowledge |
Objective Group: | Expanding knowledge |
Objective Field: | Expanding knowledge in the biological sciences |
UTAS Author: | Smith, SM (Professor Steven Smith) |
ID Code: | 101460 |
Year Published: | 2011 |
Deposited By: | Plant Science |
Deposited On: | 2015-06-24 |
Last Modified: | 2018-02-09 |
Downloads: | 0 |
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