
TY  - JOUR
A1  - Bianchi, Michele Wolfe 
A1  - Damerval, Catherine 
A1  - Vartanian, Nicole 
T1  - Identification of proteins regulated by cross-talk between drought and hormone pathways in <emph type="2">Arabidopsis</emph> wild-type and auxin-insensitive mutants, <emph type="2">axr1</emph> and <emph type="2">axr2</emph>
JF  - Functional Plant Biology
JO  - Functional Plant Biol.
Y1  - 2002
VL  - 29
IS  - 1
SP  - 55
EP  - 61
KW  - Arabidopsis, auxin-insensitive mutants, axr1, axr2, caffeoyl-CoA-3-O-methyltransferase, drought stress, fructokinase, glutamine synthetase, stress-related proteins.
UR  - https://doi.org/10.1071/PP01113 
N2  - Ten proteins differentially regulated by progressive drought stress in Arabidopsis Columbia wild-type, axr1-3 and axr2-1auxin-insensitive mutants, were identified from internal amino acid microsequencing. These proteins fell into two categories: (i) stress-related proteins, known to be induced by rapid water stress via abscisic acid (ABA)-dependent or -independent pathways &#91;late embryogenesis abundant (LEA)-like and heat shock cognate (HS) 70, respectively&#93;, or in response to pathogens or oxidative stress &#91;&#946;-1,3 glucanase (BG), annexin&#93; and (ii) metabolic enzymes &#91;glutamine synthetase (GS), fructokinase (Frk), caffeoyl-CoA-3-O-methyltransferase (CCoAOMT)&#93;. The differential behaviour of these proteins highlighted a role for AXR2 and/or AXR1 in the regulation of their abundance during drought adaptation. In particular, reduced induction of RD29B, GS and annexin, and overexpression of BG2 were observed specifically in the axr1-3 mutant, which is dramatically affected in several ABA-dependent drought adaptive responses, such as drought rhizogenesis. Altogether these results indicate cross-talk between auxin- and ABA-signalling in Arabidopsis drought responses. 
ER  -

