Abscisic acid regulated responses of aba2 1 under osmotic stress the abscisic acid inducible antioxidant defence system and reactive oxygen species production
Yazarlar (4)
C. Ozfidan Ege Üniversitesi, Türkiye
I. Turkan
Ege Üniversitesi, Türkiye
A. H. Sekmen
Ege Üniversitesi, Türkiye
Prof. Dr. Burcu SEÇKİN DİNLER Sinop Üniversitesi, Türkiye
Makale Türü Özgün Makale (SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale)
Dergi Adı Plant Biology (Q1)
Dergi ISSN 1435-8603 Dergi Bilgileri (2012)
Dergi Tarandığı Indeksler SCI
Makale Dili İngilizce Basım Tarihi 03-2012
Cilt / Sayı / Sayfa 14 / 2 / 337–346 DOI 10.1111/j.1438-8677.2011.00496.x
Makale Linki http://doi.wiley.com/10.1111/j.1438-8677.2011.00496.x
UAK Araştırma Alanları
Bitki Fizyolojisi
Özet
We investigated the interaction among abscisic acid (ABA), reactive oxygen species (ROS) and antioxidant defence system in the transduction of osmotic stress signalling using Arabidopsis thaliana WT (Columbia ecotype, WT) and an ABA‐deficient mutant (aba2‐1). For this, 50 μm ABA and osmotic stress, induced with 40% (w/v) polyethylene glycol (PEG8000; −0.7 MPa), were applied to WT and aba2‐1 for 6, 12 or 24 h. Time course analysis was undertaken for determination of total/isoenzyme activity of the antioxidant enzymes, superoxide dismutase (SOD; EC 1.15.1.1), catalase (CAT; EC 1.11.1.6), ascorbate peroxidase (APX; EC 1.11.1.11), NADPH oxidase (NOX; EC 1.6.3.1) activity; scavenging activity of the hydroxyl radical (OH˙), hydrogen peroxide (H2O2); endogenous ABA and malondialdehyde (MDA). The highest H2O2 and MDA content was found in PEG‐treated groups of both genotypes, but with …
Anahtar Kelimeler
ABA-deficient mutant | Aba2-1 | Abscisic acid | Antioxidant enzymes | Osmotic stress | Reactive oxygen species