TY  - JOUR
A1  - Thurow, Corinna
A1  - Krischke, Markus
A1  - Mueller, Martin J.
A1  - Gatz, Christiane
T1  - Induction of jasmonoyl-isoleucine (JA-Ile)-dependent JASMONATE ZIM-DOMAIN (JAZ) genes in NaCl-treated Arabidopsis thaliana roots can occur at very low JA-Ile levels and in the absence of the JA/JA-Ile transporter JAT1/AtABCG16
T2  - Plants
N2  - The plant hormone jasmonoyl-isoleucine (JA-Ile) is an important regulator of plant growth and defense in response to various biotic and abiotic stress cues. Under our experimental conditions, JA-Ile levels increased approximately seven-fold in NaCl-treated Arabidopsis thaliana roots. Although these levels were around 1000-fold lower than in wounded leaves, genes of the JA-Ile signaling pathway were induced by a factor of 100 or more. Induction was severely compromised in plants lacking the JA-Ile receptor CORONATINE INSENSITIVE 1 or enzymes required for JA-Ile biosynthesis. To explain efficient gene expression at very low JA-Ile levels, we hypothesized that salt-induced expression of the JA/JA-Ile transporter JAT1/AtABCG16 would lead to increased nuclear levels of JA-Ile. However, mutant plants with different jat1 alleles were similar to wild-type ones with respect to salt-induced gene expression. The mechanism that allows COI1-dependent gene expression at very low JA-Ile levels remains to be elucidated.
KW  - allene oxide synthase
KW  - CORONATINE INSENSITIVE 1
KW  - jasmonoyl-isoleucine
KW  - JA/JA-Ile transport protein JAT1
KW  - roots
KW  - salt
Y1  - 2020
UR  - https://opus.bibliothek.uni-wuerzburg.de/frontdoor/index/index/docId/21938
UR  - https://nbn-resolving.org/urn:nbn:de:bvb:20-opus-219382
SN  - 2223-7747
VL  - 9
IS  - 12
ER  -