Universität zu Köln

Li, Fay-Wei ORCID: 0000-0002-0076-0152, Rothfels, Carl J., Melkonian, Michael, Villarreal, Juan C., Stevenson, Dennis W., Graham, Sean W., Wong, Gane K. -S., Mathews, Sarah ORCID: 0000-0002-5518-7541 and Pryer, Kathleen M. ORCID: 0000-0002-9776-6736 (2015). The origin and evolution of phototropins. Front. Plant Sci., 6. LAUSANNE: FRONTIERS MEDIA SA. ISSN 1664-462X

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Abstract

Plant phototropism, the ability to bend toward or away from light, is predominantly controlled by blue-light photoreceptors, the phototropins. Although phototropins have been well-characterized in Arabidopsis thaliana, their evolutionary history is largely unknown. In this study, we complete an in-depth survey of phototropin homologs across land plants and algae using newly available transcriptomic and genomic data. We show that phototropins originated in an ancestor of Viridiplantae (land plants + green algae). Phototropins repeatedly underwent independent duplications in most major land-plant lineages (mosses, lycophytes, ferns, and seed plants), but remained single-copy genes in liverworts and hornworts-an evolutionary pattern shared with another family of photoreceptors, the phytochromes. Following each major duplication event, the phototropins differentiated in parallel, resulting in two specialized, yet partially overlapping, functional forms that primarily mediate either low-or high-light responses. Our detailed phylogeny enables us to not only uncover new phototropin lineages, but also link our understanding of phototropin function in Arabidopsis with what is known in Adiantum and Physcomitrella (the major model organisms outside of flowering plants). We propose that the convergent functional divergences of phototropin paralogs likely contributed to the success of plants through time in adapting to habitats with diverse and heterogeneous light conditions.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Li, Fay-Wei UNSPECIFIED orcid.org/0000-0002-0076-0152 UNSPECIFIED Rothfels, Carl J. UNSPECIFIED UNSPECIFIED UNSPECIFIED Melkonian, Michael UNSPECIFIED UNSPECIFIED UNSPECIFIED Villarreal, Juan C. UNSPECIFIED UNSPECIFIED UNSPECIFIED Stevenson, Dennis W. UNSPECIFIED UNSPECIFIED UNSPECIFIED Graham, Sean W. UNSPECIFIED UNSPECIFIED UNSPECIFIED Wong, Gane K. -S. UNSPECIFIED UNSPECIFIED UNSPECIFIED Mathews, Sarah UNSPECIFIED orcid.org/0000-0002-5518-7541 UNSPECIFIED Pryer, Kathleen M. UNSPECIFIED orcid.org/0000-0002-9776-6736 UNSPECIFIED
URN:	urn:nbn:de:hbz:38-396478
DOI:	10.3389/fpls.2015.00637
Journal or Publication Title:	Front. Plant Sci.
Volume:	6
Date:	2015
Publisher:	FRONTIERS MEDIA SA
Place of Publication:	LAUSANNE
ISSN:	1664-462X
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language CHIMERIC PHOTORECEPTOR; RED-LIGHT; PHYTOCHROME; BLUE; HISTORY; FERNS; PROTEIN; DIVERSITY; MOVEMENTS; INSIGHTS Multiple languages Plant Sciences Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/39647