Influence of Water Deficit on the Physiological and Biochemical Parameters of in vitro Plants from Hevea brasiliensis Clone PB 260

Sanier Christine, Oliver Gérald, Clément-Vidal Anne, Fabre Denis, Lardet Ludovic, Montoro Pascal. 2013. Influence of Water Deficit on the Physiological and Biochemical Parameters of in vitro Plants from Hevea brasiliensis Clone PB 260. Journal of Rubber Research, 16 (1) : 61-74.

Quartile : Q4, Sujet : POLYMER SCIENCE

Résumé : The influence of a water deficit was investigated on in vitro plantlets from the rubber tree (Hevea brasiliensis) clone PB 260. The Fraction of Transpirable Soil Water (FTSW) was used to identify three levels of water deficit. Transpiration and stomatal conductance decreased for a FTSW of 0.4 while fluorescence appeared more stable. Proline and ascorbate contents increased from the same level of water deficit. Antioxidant enzyme activities were more stable than glutathione reductase activity, which dramatically increased in line with the water deficit to peak at 0.12 UI/mg for a FTSW of 0.2. When plants were rehydrated, enzyme activities decreased. The accumulation of proline for the lowest FTSW suggested water stress. Antioxidant systems did not play a predominant role for this genotype.

Mots-clés Agrovoc : Hevea brasiliensis, vitroplant, culture in vitro, physiologie végétale, péroxydase, glutathion réductase, proline, stress dû à la sécheresse, déficit d'humidité du sol

Classification Agris : F02 - Multiplication végétative des plantes
F60 - Physiologie et biochimie végétale
H50 - Troubles divers des plantes
P33 - Chimie et physique du sol

Champ stratégique Cirad : Axe 1 (2005-2013) - Intensification écologique

Auteurs et affiliations

• Sanier Christine, CIRAD-BIOS-UMR AGAP (FRA)
• Oliver Gérald, CIRAD-BIOS-UMR AGAP (FRA)
• Clément-Vidal Anne, CIRAD-BIOS-UMR AGAP (FRA)
• Fabre Denis, CIRAD-BIOS-UMR AGAP (FRA) ORCID: 0000-0002-6222-2587
• Lardet Ludovic, CIRAD-BIOS-UMR AGAP (FRA)
• Montoro Pascal, CIRAD-BIOS-UMR AGAP (FRA)

Source : Cirad - Agritrop (https://agritrop.cirad.fr/568813/)

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