Inducible and constitutive mechanisms of salt stress resistance in Geum urbanum L.

The avens (Geum urbanum L.) seedlings were grown for 6 weeks until the expansion of five to six leaves and then exposed to salinity shock (300 mM NaCl in the nutrient medium) or to a gradual (within 4 days) increase in NaCl concentration from 100 to 400 mM. The dynamics of stress-dependent accumulation of Na+, Cl-, proline, and polyamines in leaves and roots was measured, together with activities of antioxidant enzymes, namely, superoxide dismutase (SOD) and guaiacol-dependent peroxidase occurring in soluble, ionically bound, and covalently bound forms. It is shown that avens plants can adapt to gradual salinization by mobilizing stressinducible protective mechanisms (accumulation of proline and spermine) and by activating constitutive enzyme systems (SOD and peroxidase). © 2007 Pleiades Publishing, Ltd.

Авторы
Radyukina N.L. 1 , Ivanov Yu.V.1 , Kartashov A.V.1, 2 , Shevyakova N.I.1 , Rakitin V.Yu.1 , Khryanin V.N.2 , Kuznetsov Vl.V. 1, 3
Редакторы
-
Издательство
-
Номер выпуска
5
Язык
Английский
Страницы
612-618
Статус
Опубликовано
Подразделение
-
Номер
-
Том
54
Год
2007
Организации
  • 1 Timiryazev Institute of Plant Physiology, Russian Academy of Sciences, Botanicheskaya ul. 35, Moscow 127276, Russian Federation
  • 2 Belinskii Penza Pedagogical State University, Penza, Russian Federation
  • 3 Peoples' Friendship University, ul. Miklukho-Maklaya 6, Moscow 117198, Russian Federation
Ключевые слова
Geum urbanum; Guaiacol peroxidases; Polyamines; Proline; Salinization; Superoxide dismutase
Дата создания
19.10.2018
Дата изменения
19.10.2018
Постоянная ссылка
https://repository.rudn.ru/ru/records/article/record/3210/