Transcription profiling of Arabidopsis wild type and transgenic plants response to water stress

ABSTRACT: Transgenic Arabidopsis plants with constitutively low inositol (1,4,5) triphosphate exhibit an increased tolerance to water stress by an ABA-independent pathway; The phosphoinositide pathway and inositol (1,4,5) trisphopsphate (InsP3) are implicated in plant responses to stress. In order to manipulate the pathway and determine the downstream consequences of altered InsP3-mediated signaling, we generated transgenic Arabidopsis plants expressing the mammalian type I inositol polyphosphate 5-phosphatase, an enzyme that specifically hydrolyzes the soluble inositol phosphates and terminates the signal. Transgenic plants have no morphological differences compared to wild type; however, rapid transient Ca2+ responses to a cold or salt stimulus are reduced by ~ 30%. To further understand the role

ORGANISM(S): Arabidopsis thaliana

SUBMITTER: Imara Perera 

PROVIDER: E-GEOD-10670 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress