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- Title
Arabidopsis RabF1 (ARA6) Is Involved in Salt Stress and Dark-Induced Senescence (DIS).
- Authors
Congfei Yin; Karim, Sazzad; Hongsheng Zhang; Aronsson, Henrik
- Abstract
Arabidopsis small GTPase RabF1 (ARA6) functions in endosomal vesicle transport and may play a crucial role in recycling and degradation of molecules, thus involved in stress responses. Here we have reported that complementary overexpression lines RabF1OE (overexpression), GTPase mutants RabF1Q93L (constitutively active) and RabF1S47N (dominant negative) lines show longer root growth than wild-type, rabF1 knockout and N-myristoylation deletion (Δ1-29, N-terminus) complementary overexpression mutant plants under salt induced stress, which indicates that N-myristoylation of RabF1 is indispensable for salt tolerance. Moreover, RabF1 is highly expressed during senescence and RabF1OE lines were more tolerant of dark-induced senescence (DIS) than wild-type and rabF1.
- Subjects
ARABIDOPSIS thaliana genetics; GUANOSINE triphosphatase genetics; ENDOSOMES; ORGANELLES; CELLULAR aging; PLANT mutation; PHYSIOLOGY
- Publication
International Journal of Molecular Sciences, 2017, Vol 18, Issue 2, p309
- ISSN
1661-6596
- Publication type
Article
- DOI
10.3390/ijms18020309