TY - CHAP

T1 - Development of an ex-vitro system allowing plant-bacteria interactions through VOCs in the context of water stress

AU - Mendaluk - Saunier de Cazenave, Magdalena

AU - Baudson, Caroline

AU - Delory, Benjamin

AU - du Jardin, Patrick

AU - Delaplace, Pierre

N1 - Conference code: 19

PY - 2014/2/7

Y1 - 2014/2/7

N2 - Water stress is one of the major environmental factors limiting the crop productivity . Plant stress responses are very complex and drought tolerance may be linked to the presence of specific microorganisms in the rhizosphere. Indeed, some plant growth promoting bacteria (PGPR) strains have been found to improve plant growth under abiotic stresses. Among the many mechanisms by which those PGPR can support plant growth, the emission of volatile organic compounds (VOCs) and their biological impact are still under study. The aim of this work is to evaluate the interaction between the model grass Brachypodium distachyon (Bd21) and two strains of PGPR. The impact of volatile emission on Bd21 growth was studied using an ex-vitro cocultivation system without physical contact between plant and bacteria during 10 days. This peculiar system was developed to assess bacterial VOCs impacts on plants under realistic growth and stress conditions. In parallel, the response of Bd21 seedlings to water deficit induced by polyethylene glycol 6000 (PEG 6000) was studied to establish contrasted growth conditions regarding water availability.

AB - Water stress is one of the major environmental factors limiting the crop productivity . Plant stress responses are very complex and drought tolerance may be linked to the presence of specific microorganisms in the rhizosphere. Indeed, some plant growth promoting bacteria (PGPR) strains have been found to improve plant growth under abiotic stresses. Among the many mechanisms by which those PGPR can support plant growth, the emission of volatile organic compounds (VOCs) and their biological impact are still under study. The aim of this work is to evaluate the interaction between the model grass Brachypodium distachyon (Bd21) and two strains of PGPR. The impact of volatile emission on Bd21 growth was studied using an ex-vitro cocultivation system without physical contact between plant and bacteria during 10 days. This peculiar system was developed to assess bacterial VOCs impacts on plants under realistic growth and stress conditions. In parallel, the response of Bd21 seedlings to water deficit induced by polyethylene glycol 6000 (PEG 6000) was studied to establish contrasted growth conditions regarding water availability.

KW - Biology

UR - http://www.events.gembloux.ulg.ac.be/nsabs2014/wp-content/uploads/sites/8/2014/02/NSABS2014_book_short_abstracts.pdf

M3 - Published abstract in conference proceedings

SP - 98

BT - Book of short abstracts, poster presentations

PB - Gembloux Agro-Bio Tech

T2 - 19th National Symposium on Applied Biological Sciences - NSABS 2014

Y2 - 7 February 2014 through 7 February 2014

ER -