Arabidopsis thaliana Growth is Negatively Regulated by the Class III Peroxidase AtPrx71 during Development and in Response to Cell Wall Damage

ABSTRACT: The cell wall is a crucial structure in plant cells, and modifications in its composition often have a major impact on growth and development. However, the molecular mechanisms responsible for the negative effects of cell wall alterations on plant growth are largely unknown. It was previously shown that a reduction in the levels of de-esterified homogalacturonan, a major pectin component of cell walls, in Arabidopsis thaliana plants expressing a fungal polygalacturonase or mutated in the QUASIMODO2 gene (qua2-1 plants), cause severe growth defects. Here we show that the class III peroxidase AtPrx71 is strongly up-regulated in these plants, as well as in response to alterations of other wall structural components, including treatments the cellulose synthase inhibitor isoxaben. Analysis of a

ORGANISM(S): Arabidopsis thaliana

SUBMITTER: Alberto Ferrarini 

PROVIDER: E-GEOD-66980 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress