An autophagy-associated Atg8 protein is involved in the responses of Arabidopsis seedlings to hormonal controls and abiotic stresses.

ABSTRACT: Eukaryotes contain a ubiquitous family of autophagy-associated Atg8 proteins. In animal cells, these proteins have multiple functions associated with growth, cancer, and degenerative diseases, but their functions in plants are still largely unknown. To search for novel functions of Atg8 in plants, the present report tested the effect of expression of a recombinant AtAtg8 protein, fused at its N-terminus to green fluorescent protein (GFP) and at its C-terminus to the haemagglutinin epitope tag, on the response of Arabidopsis thaliana plants to the hormones cytokinin and auxin as well as to salt and osmotic stresses. Expression of this AtAtg8 fusion protein modulates the effect of cytokinin on root architecture. Moreover, expression of this fusion protein also reduces shoot anthocyanin accum

SUBMITTER: Slavikova S 

PROVIDER: S-EPMC2576633 | biostudies-literature | 2008

REPOSITORIES: biostudies-literature