Effect of Azospirillum Lectins on the Ascorbate Peroxidase Activity and Ascorbic Acid Content in Wheat Seedling Roots Exposed to Abiotic Stresses

被引：9

作者：

Alen'kina, S. A. ^{[1
]}

Nikitina, V. E. ^{[1
]}

机构：

[1] Russian Acad Sci, Inst Biochem & Physiol Plants & Microorganisms, Saratov 410049, Russia

来源：

APPLIED BIOCHEMISTRY AND MICROBIOLOGY | 2020年 / 56卷 / 02期

关键词：

associative nitrogen fixation; azospirillum; lectins; wheat roots; antioxidant system; ascorbate peroxidase; ascorbic acid; abiotic stresses; PROTEOLYTIC-ENZYMES; CELL-SURFACE; BRASILENSE; GROWTH; ANTIOXIDANT; GERMINATION; INHIBITORS; TOLERANCE; BACTERIA; DROUGHT;

D O I：

10.1134/S0003683820020027

中图分类号：

Q81 [生物工程学（生物技术）]; Q93 [微生物学];

学科分类号：

071005 ; 0836 ; 090102 ; 100705 ;

摘要：

We examined the effect of lectins from two Azospirillum strains (the epiphyte A.brasilense Sp7 and the endophyte A. brasilense Sp245) on the ascorbate peroxidase activity and ascorbic acid content in roots of etiolated wheat (Triticum aestivum L.) seedlings under simulated abiotic stresses: hypothermic (5 degrees C) and hyperthermic (42 degrees C) stress, salinity (1% NaCl), drought (5% sucrose), and heavy metal toxicity (CoSO4, ZnSO4, Pb(CH3COO)(2), and CuSO4). Both lectins increased ascorbate peroxidase activity and ascorbate content in stressed seedling roots. Based on the obtained data, we propose that the antioxidant action of the Azospirillum lectins underlies the protective effect of these proteins toward wheat seedling roots subjected to abiotic stresses.

引用

页码：211 / 218

页数：8

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