Open AccessEthylene-insensitive Arabidopsis mutants etr1-1 AND ein2-1 have decreased freezing tolerance
Author(s) -
В. Н. Попов,
A. N. Deryabin,
Н. В. Астахова,
О. В. Антипина,
Т. А. Суворова,
Г. П. Алиева,
И. Е. Мошков
Publication year - 2019
Publication title -
doklady akademii nauk. rossijskaâ akademiâ nauk
Language(s) - English
Resource type - Journals
ISSN - 0869-5652
DOI - 10.31857/s0869-56524873338-341
Subject(s) - arabidopsis , ethylene , mutant , arabidopsis thaliana , ecotype , freezing tolerance , microbiology and biotechnology , wild type , transduction (biophysics) , signal transduction , chemistry , biology , botany , biophysics , biochemistry , gene , catalysis
The freezing tolerance of Arabidopsis thaliana (L.) Heynh. was studied in relation to functioning of the ethylene signaling pathway. Constitutive freezing tolerance was compared in wild-type plants (ecotype Col-0) and ethylene-insensitive mutants etr1-1 and ein2-1. For the first time it was established that ethylene-insensitive mutants had by 25-30% lower net photosynthesis rate, the decreased content of soluble sugars and, as a result, lower freezing tolerance. Our work provides evidence that perception and transduction of ethylene signal are necessary for constitutive tolerance of Arabidopsis to low temperature.