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Article Dans Une Revue Environmental and Experimental Botany Année : 2015

A review of the effects of soil organisms on plant hormone signalling pathways

Résumé

Plants interact with a large number of soil organisms. For a long time, these interactions have been the research area of soil ecologists and trophic relationships and physico-chemical modifications of the soil matrix were generally proposed as mechanisms underlying plant-soil organism interactions. However, some specific symbioses and diseases have been well characterized at the molecular level by plant biologists and microbiologists. These interactions involve a physical contact between soil organism and plant. They are mediated through signal molecules that play upon the different plant hormonal signalling pathways, leading to modifications in plant development and defence. Nowadays, the role of signal molecules emerges as an important feature of interactions between plants and free-living soil organisms. In this review we discuss genetic and physiological evidences of hormone signalling involvement in plant response to physically associated but also free-living soil organisms, for very different taxa ranging from the micrometer to the centimetre scales. The same hormone signalling pathways seems to be activated by very different kinds of soil organisms such as bacteria, nematodes, collembola and even earthworms, with common consequences on plant growth, development and defence. Plant hormonal homeostasis appears to be the corner stone to understand and predict the issue of the multiple interactions that plants entertain with the community of soil organisms.
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Dates et versions

hal-01823863 , version 1 (26-06-2018)

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Ruben Puga Freitas, Manuel Blouin. A review of the effects of soil organisms on plant hormone signalling pathways. Environmental and Experimental Botany, 2015, 114, pp.104 - 116. ⟨10.1016/j.envexpbot.2014.07.006⟩. ⟨hal-01823863⟩
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