New insights into the cellular mechanisms of plant growth at elevated atmospheric carbon dioxide concentrations

Gamage, Dananjali and Thompson, Michael and Sutherland, Mark and Hirotsu, Naoki and Makino, Amane and Seneweera, Saman (2018) New insights into the cellular mechanisms of plant growth at elevated atmospheric carbon dioxide concentrations. Plant, Cell and Environment, 41 (6). pp. 1233-1246. ISSN 0140-7791

Abstract

Rising atmospheric carbon dioxide concentration ([CO2]) significantly influences plant growth, development, and biomass. Increased photosynthesis rate, together with lower stomatal conductance, has been identified as the key factors that stimulate plant growth at elevated [CO2] (e[CO2]). However, variations in photosynthesis and stomatal conductance alone cannot fully explain the dynamic changes in plant growth. Stimulation of photosynthesis at e[CO2] is always associated with post‐photosynthetic secondary metabolic processes that include carbon and nitrogen metabolism, cell cycle functions, and hormonal regulation. Most studies have focused on photosynthesis and stomatal conductance in response to e[CO2], despite the emerging evidence of e[CO2]'s role in moderating secondary metabolism in plants. In this review, we briefly discuss the effects of e[CO2] on photosynthesis and stomatal conductance and then focus on the changes in other cellular mechanisms and growth processes at e[CO2] in relation to plant growth and development. Finally, knowledge gaps in understanding plant growth responses to e[CO2] have been identified with the aim of improving crop productivity under a CO2 rich atmosphere.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Permanent restricted access to Published version, in accordance with the copyright policy of the publisher.
Faculty/School / Institute/Centre: Current - Institute for Life Sciences and the Environment - Centre for Crop Health
Date Deposited: 18 Mar 2019 01:32
Last Modified: 05 Apr 2019 01:45
Uncontrolled Keywords: carbon metabolism, cell cycle, climate change, elevated [CO2] (e[CO2]), hormonal metabolism, nitrogen metabolism, photosynthesis, plant growth mechanism, source‐sink interactions
Fields of Research : 06 Biological Sciences > 0607 Plant Biology > 060705 Plant Physiology
06 Biological Sciences > 0607 Plant Biology > 060702 Plant Cell and Molecular Biology
Identification Number or DOI: 10.1111/pce.13206
URI: http://eprints.usq.edu.au/id/eprint/36162

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