Journal
PLANT CELL AND ENVIRONMENT
Volume 32, Issue 6, Pages 628-640Publisher
WILEY
DOI: 10.1111/j.1365-3040.2008.01891.x
Keywords
mycorrhizas; root-released compounds; root response to heterogeneity; root-root interactions; root system coordination; Tragedy-of-the-Commons response
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Funding
- Biotechnology and Biological Sciences Research Council (BBSRC), UK
- Biotechnology and Biological Sciences Research Council [JF13140] Funding Source: researchfish
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Root systems have recognizable developmental plans when grown in solution or agar; however, these plans often must be modified to cope with the prevailing conditions in the soil environment such as the avoidance of obstacles and the exploitation of nutrient-rich patches or water zones. The modular structure of roots enables them to respond to their environment, and roots are very adaptive at modifying growth throughout the root system to concentrate their efforts in the areas that are the most profitable. Roots also form associations with microorganisms as a strategy to enhance resource capture. However, while the responses of roots in nutrient patches are well-recognized, overall 'rules of response' and variation in strategy among plant species that can be applied in a number of different environments are still lacking. Finally, there is increasing evidence that root-root interactions are much more sophisticated than previously thought, and the evidence for roots to identify self from non-self roots will be briefly discussed.
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