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Nitric oxide is involved in abscisic acid-induced antioxidant activities in Stylosanthes guianensis.
J Exp Bot. 2005 Dec; 56(422):3223-8.JE

Abstract

Previous studies suggest that abscisic acid (ABA) stimulates the activities of antioxidant enzymes under normal and chilling temperature and enhanced chilling resistance in Stylosanthes guianensis. The objective of this study was to test whether nitric oxide (NO) is involved in the ABA-induced activities of the antioxidant enzymes in Stylosanthes guianensis due to its nature as a second messenger in stress responses. Plants were treated with NO donors, ABA, ABA in combination with NO scavengers or the nitric oxide synthase (NOS) inhibitor and their effects on the activity of antioxidant enzymes and NO production were compared. The results showed that ABA increased the activities of superoxide dismutase (SOD), catalase (CAT), and ascorbate peroxidase (APX). The effect of ABA on antioxidant enzyme activities was suppressed by the NOS inhibitor, N(omega)-nitro-L-arginine (L-NNA), and the NO scavenger, 2-phenyl-4,4,5,5-tetramethylimidazoline-1-oxyl3-oxide (PTIO). NO content increased after 5 h of ABA treatment. The NO-scavenger, PTIO, and the NOS-inhibitor, L-NNA, inhibited the accumulation of NO in ABA-treated Stylosanthes guianensis. NO donor treatment enhanced the activities of SOD, CAT, and APX. The results suggested that NO was involved in the ABA-induced activities of SOD, CAT, and APX in Stylosanthes guianensis. ABA triggered NO production that may lead to the stimulation of antioxidant enzyme activities.

Authors+Show Affiliations

Zhou B
Biotechnology Laboratory for Turfgrass and Forages, College of Life Sciences, South China Agricultural University, Guangzhou 510642, China.
Guo Z
No affiliation info available
Xing J
No affiliation info available
Huang B
No affiliation info available

MeSH

Abscisic AcidAntioxidantsAscorbate PeroxidasesCatalaseCyclic N-OxidesEnzyme InhibitorsFabaceaeFree Radical ScavengersImidazolesNitric OxideNitric Oxide DonorsNitric Oxide SynthaseNitroargininePeroxidasesSuperoxide Dismutase

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

16263901

Citation

Zhou, Biyan, et al. "Nitric Oxide Is Involved in Abscisic Acid-induced Antioxidant Activities in Stylosanthes Guianensis." Journal of Experimental Botany, vol. 56, no. 422, 2005, pp. 3223-8.
Zhou B, Guo Z, Xing J, et al. Nitric oxide is involved in abscisic acid-induced antioxidant activities in Stylosanthes guianensis. J Exp Bot. 2005;56(422):3223-8.
Zhou, B., Guo, Z., Xing, J., & Huang, B. (2005). Nitric oxide is involved in abscisic acid-induced antioxidant activities in Stylosanthes guianensis. Journal of Experimental Botany, 56(422), 3223-8.
Zhou B, et al. Nitric Oxide Is Involved in Abscisic Acid-induced Antioxidant Activities in Stylosanthes Guianensis. J Exp Bot. 2005;56(422):3223-8. PubMed PMID: 16263901.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Nitric oxide is involved in abscisic acid-induced antioxidant activities in Stylosanthes guianensis. AU - Zhou,Biyan, AU - Guo,Zhenfei, AU - Xing,Jinpeng, AU - Huang,Bingru, Y1 - 2005/11/01/ PY - 2005/11/3/pubmed PY - 2006/1/21/medline PY - 2005/11/3/entrez SP - 3223 EP - 8 JF - Journal of experimental botany JO - J Exp Bot VL - 56 IS - 422 N2 - Previous studies suggest that abscisic acid (ABA) stimulates the activities of antioxidant enzymes under normal and chilling temperature and enhanced chilling resistance in Stylosanthes guianensis. The objective of this study was to test whether nitric oxide (NO) is involved in the ABA-induced activities of the antioxidant enzymes in Stylosanthes guianensis due to its nature as a second messenger in stress responses. Plants were treated with NO donors, ABA, ABA in combination with NO scavengers or the nitric oxide synthase (NOS) inhibitor and their effects on the activity of antioxidant enzymes and NO production were compared. The results showed that ABA increased the activities of superoxide dismutase (SOD), catalase (CAT), and ascorbate peroxidase (APX). The effect of ABA on antioxidant enzyme activities was suppressed by the NOS inhibitor, N(omega)-nitro-L-arginine (L-NNA), and the NO scavenger, 2-phenyl-4,4,5,5-tetramethylimidazoline-1-oxyl3-oxide (PTIO). NO content increased after 5 h of ABA treatment. The NO-scavenger, PTIO, and the NOS-inhibitor, L-NNA, inhibited the accumulation of NO in ABA-treated Stylosanthes guianensis. NO donor treatment enhanced the activities of SOD, CAT, and APX. The results suggested that NO was involved in the ABA-induced activities of SOD, CAT, and APX in Stylosanthes guianensis. ABA triggered NO production that may lead to the stimulation of antioxidant enzyme activities. SN - 0022-0957 UR - https://www.unboundmedicine.com/medline/citation/16263901/Nitric_oxide_is_involved_in_abscisic_acid_induced_antioxidant_activities_in_Stylosanthes_guianensis_ DB - PRIME DP - Unbound Medicine ER -