Source-to-sink transport of sugar and regulation by environmental factors
By R. Lemoine, S. Camera, R. Atanassova, F. Dédaldéchamp, T. Allario, Nathalie Pourtau, J. Bonnemain, M. Laloi, P. Coutos-Thévenot, L. Maurousset and 5 more. Frontiers in Plant Science, 2013
1,107 citations recorded by the source corpus.
Source-to-sink transport of sugar is one of the major determinants of plant growth and relies on the efficient and controlled distribution of sucrose (and some other sugars such as raffinose and polyols) across plant organs through the phloem. However, sugar transport through the phloem can be affected by many environmental factors that alter source/sink relationships. In this paper, we summarize current knowledge about the phloem transport mechanisms and review the effects of several abiotic (water and salt stress, mineral deficiency, CO2, light, temperature, air, and soil pollutants) and biotic (mutualistic and pathogenic microbes, viruses, aphids, and parasitic plants) factors. Concerning abiotic constraints, alteration of the distribution of sugar among sinks is often reported, with some sinks as roots favored in case of mineral deficiency. Many of these constraints impair the transport function of the phloem but the exact mechanisms are far from being completely known. Phloem integrity can be disrupted (e.g., by callose deposition) and under certain conditions, phloem transport is affected, earlier than photosynthesis. Photosynthesis inhibition could result from the increase in sugar concentration due to phloem transport decrease. Biotic interactions (aphids, fungi, viruses…) also affect crop plant productivity. Recent breakthroughs have identified some of the sugar transporters involved in these interactions on the host and pathogen sides. The different data are discussed in relation to the phloem transport pathways. When possible, the link with current knowledge on the pathways at the molecular level will be highlighted.
Subfields: Plant Science
View Paper: https://www.semanticscholar.org/paper/abaea6c8cde66a0957438fb9125a822bfd90a7d7
How researchers see this paper
The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.
In Plant Science
Citations in the corpus
- Multiple functional roles of anthocyanins in plant-environment interactions. (2015, background): “whole-plant growth, associated with sharp changes to the source to sink ratio (Marschner, 1995; Lemoine et al., 2013).”
- Potassium fertilization increases water-use efficiency for stem biomass production without affecting intrinsic water-use efficiency in Eucalyptus grandis plantations (2016, background): “Strong positive correlations between biomass production, tree water requirements and soil water availability are well documented (Brando et al., 2008; Muller et al., 2011; Lemoine et al., 2013).”
- Effect of various drought stresses and subsequent recovery on proline, total soluble sugar and starch metabolisms in Rice (Oryza sativa L.) varieties (2019, background): “Lemoine et al. (2013) suggested that soluble sugar regulation in plants was a very complex manner.”
- Role of sugars under abiotic stress. (2016, background): “…structure and growth of plants (Rosa et al., 2009) and it regulate in plants in a very complex manner because of its site specificity, therefore need long distant signals to coordinate with the alterations in physiological, developmental as well as environmental changes (Lemoine et al., 2013).”
- Climate change impacts on the ecology of Fusarium graminearum species complex and susceptibility of wheat to Fusarium head blight: a review (2016, background): “Carbohydrate partitioning plays an important role in establishing a sink at the site of infection for the mobilization of defenses, but increases in leaf carbohydrate concentration may disrupt the physiological balance of this process (Lemoine et al., 2013).”