Dose-dependent Effects of Azospirilla Lectin on the Growth of wheat Seedlings under Salt Stress

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Resumo

The dose-dependent effect of the A. brasilense Sp7 lectin on the roots of 4-day-old wheat seedlings (Triticum aestivum L. cv. Saratovskaya 29) grown under simulated salt stress was studied. In the roots of wheat seedlings under salt stress, lectin increased the activity of peroxidase and superoxide dismutase, but decreased the activity of catalase. In the roots of stressed seedlings, lectin reduced the total protein content and lipid peroxidation causing membrane damage, but increased the content of secondary metabolites, such as the total amount of phenols and flavonoids. It was concluded that azospirillum lectins are involved in adaptive changes in the roots of wheat seedlings, due to which the relationship between bacteria and their hosts can be regulated when soil and climatic factors change.

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Sobre autores

S. Alen’kina

Saratov Scientific Centre of the Russian Academy of Sciences (IBPPM RAS)

Autor responsável pela correspondência
Email: s.alenkina@yandex.ru

Institute of Biochemistry and Physiology of Plants and Microorganisms

Rússia, Saratov, 410049

M. Кupryаshinа

Saratov Scientific Centre of the Russian Academy of Sciences (IBPPM RAS)

Email: s.alenkina@yandex.ru

Institute of Biochemistry and Physiology of Plants and Microorganisms

Rússia, Saratov, 410049

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2. Fig. 1. Effect of lectin (2–5) A. brasilense Sp7 on the content of MDA (a), PS (b) and flavonoids (c) in the roots of wheat seedlings under salinity: 1 – control, without lectin; 2 – 0.1 mM; 3 – 0.3 mM; 4 – 0.6 mM; 5 – 1.2 mM. The results are presented as arithmetic means with standard error. Different letters indicate significantly different values ​​(P < 0.05).

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