Comparison of drought stress response and gene expression between a GM maize variety and a near-isogenic non-GM variety.

ABSTRACT: Maize MON810, grown and commercialised worldwide, is the only cultivated GM event in the EU. Maize MON810, variety DKC6575, and the corresponding near-isogenic line Tietar were studied in different growth conditions, to compare their behaviour in response to drought. Main photosynthetic parameters were significantly affected by drought stress in both GM and non-GM varieties to a similar extent. Though DKC6575 (GM) had a greater sensitivity in the early phase of stress response as compared with Tietar (non-GM), after six days of stress they behaved similarly, and both varieties recovered from stress damage. Profiling gene expression in water deficit regimes and in a generalised drought stress condition showed an up-regulation of many stress-responsive genes, but a greater number of differen

SUBMITTER: Gulli M 

PROVIDER: S-EPMC4333122 | biostudies-literature | 2015

REPOSITORIES: biostudies-literature