Effects of elevated carbon dioxide on photosynthesis and carbon partitioning: a perspective on root sugar sensing and hormonal crosstalk
Article
Article Title | Effects of elevated carbon dioxide on photosynthesis and carbon partitioning: a perspective on root sugar sensing and hormonal crosstalk |
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ERA Journal ID | 200523 |
Article Category | Article |
Authors | Thompson, Michael (Author), Gamage, Dananjali (Author), Hirotsu, Naoki (Author), Martin, Anke (Author) and Seneweera, Saman (Author) |
Journal Title | Frontiers in Physiology |
Journal Citation | 8, pp. 1-13 |
Article Number | 578 |
Number of Pages | 13 |
Year | 2017 |
Place of Publication | Switzerland |
ISSN | 1664-042X |
Digital Object Identifier (DOI) | https://doi.org/10.3389/fphys.2017.00578 |
Web Address (URL) | https://www.frontiersin.org/articles/10.3389/fphys.2017.00578/full |
Abstract | Plant responses to atmospheric carbon dioxide will be of great concern in the future, as carbon dioxide concentrations ([CO2]) are predicted to continue to rise. Elevated [CO2] causes increased photosynthesis in plants, which leads to greater production of carbohydrates and biomass. Which organ the extra carbohydrates are allocated to varies between species, but also within species. These carbohydrates are a major energy source for plant growth, but they also act as signaling molecules and have a range of uses beyond being a source of carbon and energy. Currently, there is a lack of information on how the sugar sensing and signaling pathways of plants are affected by the higher content of carbohydrates produced under elevated [CO2]. Particularly, the sugar signaling pathways of roots are not well understood, along with how they are affected by elevated [CO2]. At elevated [CO2], some plants allocate greater amounts of sugars to roots where they are likely to act on gene regulation and therefore modify nutrient uptake and transport. Glucose and sucrose also promote root growth, an effect similar to what occurs under elevated [CO2]. Sugars also crosstalk with hormones to regulate root growth, but also affect hormone biosynthesis. This review provides an update on the role of sugars as signaling molecules in plant roots and thus explores the currently known functions that may be affected by elevated [CO2]. |
Keywords | elevated carbon dioxide concentration (e[CO2]); sugar sensing and signaling; photosynthesis; hormone crosstalk; photosynthetic acclimation; carbon partitioning; hexokinase; AIR CO2 ENRICHMENT; D-TYPE CYCLIN; AFFINITY NITRATE TRANSPORTERS; PENTOSE-PHOSPHATE PATHWAY; ARABIDOPSIS-THALIANA; ATMOSPHERIC CO2; DIURNAL REGULATION; TREHALOSE 6-PHOSPHATE; SYSTEM ARCHITECTURE; ION TRANSPORTERS |
ANZSRC Field of Research 2020 | 300404. Crop and pasture biochemistry and physiology |
Byline Affiliations | Centre for Crop Health |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q50qy/effects-of-elevated-carbon-dioxide-on-photosynthesis-and-carbon-partitioning-a-perspective-on-root-sugar-sensing-and-hormonal-crosstalk
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