Expression data from leaves of GA-deficient and GA-insensitive transgenic poplar

ABSTRACT: We used whole-genome microarrays to identify differentially expressed genes in leaves of GA-deficient (35S::PcGA2ox) and/or GA-insensitive (35S::rgl1) transgenics as compared to WT poplar (717-1B4 genotype). Our work suggests that the molecular machinery that reduces gibberellins (GAs) concentration and signaling is a major route for restraining growth under both immediate and imminent adverse conditions. We show that inhibition of growth as a result of water deprivation and short days (SDs) coincides with up-regulation of several DELLA and GA2ox encoding genes in poplar. Likewise, GA-deficient and GA-insensitive transgenics, with up-regulated GA2ox and DELLA domain proteins, elicited a hypersensitive growth inhibition in response to both drought and SDs. Because the GA-modified transgenic

ORGANISM(S): Populus tremula x Populus alba

SUBMITTER: Victor Busov 

PROVIDER: E-GEOD-38390 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress