| Photorespiration and the Evolution of C(4) Photosynthesis. | |
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MedLine Citation:
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PMID: 22404472 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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C(4) photosynthesis is one of the most convergent evolutionary phenomena in the biological world, with at least 66 independent origins. Evidence from these lineages consistently indicates that the C(4) pathway is the end result of a series of evolutionary modifications to recover photorespired CO(2) in environments where RuBisCO oxygenation is high. Phylogenetically informed research indicates that the repositioning of mitochondria in the bundle sheath is one of the earliest steps in C(4) evolution, as it may establish a single-celled mechanism to scavenge photorespired CO(2) produced in the bundle sheath cells. Elaboration of this mechanism leads to the two-celled photorespiratory concentration mechanism known as C2 photosynthesis (commonly observed in C3-C(4) intermediate species) and then to C(4) photosynthesis following the upregulation of a C(4) metabolic cycle. Expected final online publication date for the Annual Review of Plant Biology Volume 63 is April 29, 2012. Please see http://www.annualreviews.org/catalog/pubdates.aspx for revised estimates. |
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Authors:
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Rowan F Sage; Tammy L Sage; Ferit Kocacinar |
Publication Detail:
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Type: JOURNAL ARTICLE Date: 2012-1-30 |
Journal Detail:
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Title: Annual review of plant biology Volume: - ISSN: 1545-2123 ISO Abbreviation: - Publication Date: 2012 Jan |
Date Detail:
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Created Date: 2012-3-12 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 101140127 Medline TA: Annu Rev Plant Biol Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Affiliation:
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Department of Ecology and Evolutionary Biology, University of Toronto, Toronto, ON M5S3B2, Canada; email: r.sage@utoronto.ca. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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