| Literature DB >> 17823244 |
Sandy Vanderauwera1, Marc De Block, Nancy Van de Steene, Brigitte van de Cotte, Michael Metzlaff, Frank Van Breusegem.
Abstract
Transgenic plants with reduced poly(ADP-ribose) polymerase (PARP) levels have broad-spectrum stress-resistant phenotypes. Both Arabidopsis thaliana and oilseed rape (Brassica napus) lines overexpressing RNA interference-PARP constructs were more resistant to various abiotic stress treatments in laboratory and greenhouse experiments without negative effects on growth, development, and seed production. This outperforming stress tolerance was initially attributed solely to a maintained energy homeostasis due to reduced NAD(+) consumption. We show that in PARP2-deficient Arabidopsis plants, the observed abiotic stress resistance can also be explained by alterations in abscisic acid levels that facilitate the induction of a wide set of defense-related genes.Entities:
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Year: 2007 PMID： 17823244 PMCID： PMC1986628 DOI： 10.1073/pnas.0706668104
Source DB: PubMed Journal: Proc Natl Acad Sci U S A ISSN： 0027-8424 Impact factor: 11.205