Functional diversity of photobiological traits within the genus Symbiodinium appears to be governed by the interaction of cell size with cladal designation

Suggett, DJ; Goyen, S; Evenhuis, C; Szabó, M; Pettay, DT; Warner, ME; Ralph, PJ

Functional diversity of photobiological traits within the genus Symbiodinium appears to be governed by the interaction of cell size with cladal designation

Suggett, DJ

Goyen, S

Evenhuis, C

Szabó, M

Pettay, DT Warner, ME Ralph, PJ

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Publication Type:: Journal Article
Citation:: New Phytologist, 2015, 208 (2), pp. 370 - 381
Issue Date:: 2015-10-01

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Field	Value	Language
dc.contributor.author	Suggett, DJ https://orcid.org/0000-0001-5326-2520	en_US
dc.contributor.author	Goyen, S https://orcid.org/0000-0003-3691-4640	en_US
dc.contributor.author	Evenhuis, C https://orcid.org/0000-0001-9903-7716	en_US
dc.contributor.author	Szabó, M https://orcid.org/0000-0001-6235-2894	en_US
dc.contributor.author	Pettay, DT	en_US
dc.contributor.author	Warner, ME	en_US
dc.contributor.author	Ralph, PJ https://orcid.org/0000-0002-3103-7346	en_US
dc.date.available	2015-04-23	en_US
dc.date.issued	2015-10-01	en_US
dc.identifier.citation	New Phytologist, 2015, 208 (2), pp. 370 - 381	en_US
dc.identifier.issn	0028-646X	en_US
dc.identifier.uri	http://hdl.handle.net/10453/36173
dc.description.abstract	© 2015 New Phytologist Trust. Dinoflagellates of the genus Symbiodinium express broad diversity in both genetic identity (phylogeny) and photosynthetic function to presumably optimize ecological success across extreme light environments; however, whether differences in the primary photobiological characteristics that govern photosynthetic optimization are ultimately a function of phylogeny is entirely unresolved. We applied a novel fast repetition rate fluorometry approach to screen genetically distinct Symbiodinium types (n=18) spanning five clades (A-D, F) for potential phylogenetic trends in factors modulating light absorption (effective cross-section, reaction center content) and utilization (photochemical vs dynamic nonphotochemical quenching; [1 - C] vs [1 - Q]) by photosystem II (PSII). The variability of PSII light absorption was independent of phylogenetic designation, but closely correlated with cell size across types, whereas PSII light utilization intriguingly followed one of three characteristic patterns: (1) similar reliance on [1 - C] and [1 - Q] or (2) preferential reliance on [1 - C] (mostly A, B types) vs (3) preferential reliance on [1 - Q] (mostly C, D, F types), and thus generally consistent with cladal designation. Our functional trait-based approach shows, for the first time, how Symbiodinium photosynthetic function is governed by the interplay between phylogenetically dependent and independent traits, and is potentially a means to reconcile complex biogeographic patterns of Symbiodinium phylogenetic diversity in nature.	en_US
dc.relation	http://purl.org/au-research/grants/arc/FT130100202
dc.relation.ispartof	New Phytologist	en_US
dc.relation.isbasedon	10.1111/nph.13483	en_US
dc.subject.classification	Plant Biology & Botany	en_US
dc.subject.mesh	Dinoflagellida	en_US
dc.subject.mesh	Photosystem II Protein Complex	en_US
dc.subject.mesh	Biodiversity	en_US
dc.subject.mesh	Phylogeny	en_US
dc.subject.mesh	Cell Size	en_US
dc.subject.mesh	Electron Transport	en_US
dc.subject.mesh	Photochemistry	en_US
dc.subject.mesh	Geography	en_US
dc.subject.mesh	Light	en_US
dc.subject.mesh	Molecular Sequence Data	en_US
dc.title	Functional diversity of photobiological traits within the genus Symbiodinium appears to be governed by the interaction of cell size with cladal designation	en_US
dc.type	Journal Article
utslib.citation.volume	2	en_US
utslib.citation.volume	208	en_US
utslib.for	060104 Cell Metabolism	en_US
utslib.for	060705 Plant Physiology	en_US
utslib.for	06 Biological Sciences	en_US
utslib.for	07 Agricultural and Veterinary Sciences	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Science
pubs.organisational-group	/University of Technology Sydney/Strength - C3 - Climate Change Cluster
pubs.organisational-group	/University of Technology Sydney/Strength - ithree - Institute of Infection, Immunity and Innovation
utslib.copyright.status	closed_access
pubs.issue	2	en_US
pubs.publication-status	Published	en_US
pubs.volume	208	en_US

Abstract:

© 2015 New Phytologist Trust. Dinoflagellates of the genus Symbiodinium express broad diversity in both genetic identity (phylogeny) and photosynthetic function to presumably optimize ecological success across extreme light environments; however, whether differences in the primary photobiological characteristics that govern photosynthetic optimization are ultimately a function of phylogeny is entirely unresolved. We applied a novel fast repetition rate fluorometry approach to screen genetically distinct Symbiodinium types (n=18) spanning five clades (A-D, F) for potential phylogenetic trends in factors modulating light absorption (effective cross-section, reaction center content) and utilization (photochemical vs dynamic nonphotochemical quenching; [1 - C] vs [1 - Q]) by photosystem II (PSII). The variability of PSII light absorption was independent of phylogenetic designation, but closely correlated with cell size across types, whereas PSII light utilization intriguingly followed one of three characteristic patterns: (1) similar reliance on [1 - C] and [1 - Q] or (2) preferential reliance on [1 - C] (mostly A, B types) vs (3) preferential reliance on [1 - Q] (mostly C, D, F types), and thus generally consistent with cladal designation. Our functional trait-based approach shows, for the first time, how Symbiodinium photosynthetic function is governed by the interplay between phylogenetically dependent and independent traits, and is potentially a means to reconcile complex biogeographic patterns of Symbiodinium phylogenetic diversity in nature.

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http://hdl.handle.net/10453/36173