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Authors Radyukina, NL; Mapelli, S; Ivanov, YV; Kartashov, AV; Brambilla, I; Kuznetsov, VV
Author Full Name Radyukina, N. L.; Mapelli, S.; Ivanov, Yu. V.; Kartashov, A. V.; Brambilla, I.; Kuznetsov, Vl. V.
Title Homeostasis of polyamines and antioxidant systems in roots and leaves of Plantago major under salt stress
Source RUSSIAN JOURNAL OF PLANT PHYSIOLOGY
Language English
Document Type Article
Author Keywords Plantago major; catalase; gene expression; peroxidase; polyamines; superoxide dismutase
Keywords Plus LIPID-PEROXIDATION; HYDROGEN-PEROXIDE; RICE SEEDLINGS; SUPEROXIDE; INVOLVEMENT; METABOLISM
Abstract Functioning of the antioxidant system in roots and leaves of Plantago major L. in water culture at the stage of 5-6 genuine leaves of the plants subjected to NaCl (100 mM) action for 96 h was investigated. This plant exhibited a pronounced organ specificity of antioxidant defense system functioning. The roots were characterized by high constitutive activities of superoxide dismutase and three forms of peroxidase, and a lower catalase activity. Constitutive level of polyamines in roots was higher than in leaves. In both leaves and roots during first 24 h, the polyamine content declined but spermidine remained to be a predominant polyamine. The analysis of differential expression of the genes encoding enzymes of polyamine biosynthesis demonstrated certain differences in these plant organs. The changes in expression of genes MET1, SPMS1, and SPMS2 were observed in roots, whereas in leaves expression of MET1, SAMDC1, SPDS1, and SPMS1 was altered. These changes are possibly one of the mechanisms responsible for the regulation of polyamine endogenous level under salinity. In contrast to leaves, in roots, the oxidative degradation of spermidine by polyamine oxidase can take part in the regulation of endogenous spermidine level. Taken together, these findings allowed us to conclude that, unlike leaves, the roots of P. major under salinity conditions possessed a higher activity of the antioxidant system protecting plants from injurious action of oxidative stress, thereby providing survival of this plant species under stress conditions.
Author Address [Radyukina, N. L.; Ivanov, Yu. V.; Kartashov, A. V.; Kuznetsov, Vl. V.] Russian Acad Sci, KA Timiryazev Plant Physiol Inst, Moscow 127276, Russia; [Kartashov, A. V.] Penza State Teacher Training Univ, Penza, Russia; [Mapelli, S.; Brambilla, I.] Natl Counsil Res CNR, Inst Agr Biol & Biotechnol, Milan, Italy
Reprint Address Radyukina, NL (corresponding author), Russian Acad Sci, KA Timiryazev Plant Physiol Inst, Bot Skaya Ul 35, Moscow 127276, Russia.
E-mail Address natrad@yandex.ru
ResearcherID Number Kartashov, Alexander/AAF-9584-2020; Kuznetsov, Vladimir/N-7687-2014; Ivanov, Yury/G-5945-2015
ORCID Number Kartashov, Alexander/0000-0001-8556-8719; Ivanov, Yury/0000-0003-1465-1720
Funding Agency and Grant Number Russian Foundation for Basic ResearchRussian Foundation for Basic Research (RFBR) [07-04-00995a]; Presidium of RASRussian Academy of Sciences; program Molecular and Cell Biology
Funding Text Authors thank T. V. Litonova for technical help in conducting the experiments. This work was partly supported by the Russian Foundation for Basic Research (project no. 07-04-00995a) and by the Presidium of RAS, a program Molecular and Cell Biology; this research was performed in the framework of RAS-CNR Scientific Cooperation Agreement.
Times Cited 11
Total Times Cited Count (WoS, BCI, and CSCD) 14
Publisher PLEIADES PUBLISHING INC
Publisher City MOSCOW
Publisher Address PLEIADES PUBLISHING INC, MOSCOW, 00000, RUSSIA
ISSN 1021-4437
29-Character Source Abbreviation RUSS J PLANT PHYSL+
ISO Source Abbreviation Russ. J. Plant Physiol.
Publication Date MAY
Year Published 2009
Volume 56
Issue 3
Beginning Page 323
Ending Page 331
Digital Object Identifier (DOI) 10.1134/S1021443709030042
Page Count 9
Web of Science Category Plant Sciences
Subject Category Plant Sciences
Document Delivery Number 444DR
Unique Article Identifier WOS:000265961200004
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