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The newly synthesized plant growth regulator S-methylmethionine salicylate may provide protection against high salinity in wheat

Janda, Tibor and Khalil, Radwan and Tajti, Judit and Pál, Magda and Szalai, Gabriella and Rudnóy, Szabolcs and Rácz, Ilona and Kátay, György and B. Molnár, Anna and Gell, Gyöngyvér and Birinyi, Zsófia and Darkó, Éva (2018) The newly synthesized plant growth regulator S-methylmethionine salicylate may provide protection against high salinity in wheat. PLANT GROWTH REGULATION, 85 (2). pp. 305-315. ISSN 0167-6903

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Abstract

High salinity is one of the major environmental factors limiting the productivity of crop species worldwide. Improving the stress tolerance of cultivated plants and thus increasing crop yields in an environmentally friendly way is a crucial task in agriculture. In the present work the ability of a new derivative, S-methylmethionine-salicylate (MMS), to improve the salt tolerance of wheat plants was tested parallel with its related compounds salicylic acid and S-methylmethionine. The results show that while these compounds are harmful at relatively high concentration (0.5 mM), they may provide protection against high salinity at lower (0.1 mM) concentration. This was confirmed by gas exchange, chlorophyll content and chlorophyll-a fluorescence induction measurements. While osmotic adjustment probably plays a critical role in the improved salt tolerance, neither Na or K transport from the roots to the shoots nor proline synthesis are the main factors in the tolerance induced by the compounds tested. MMS, S-methylmethionine and Na-salicylate had different effects on flavonol biosynthesis. It was also shown that salt treatment had a substantial influence on the SA metabolism in wheat roots and leaves. Present results suggest that the investigated compounds can be used to improve salt tolerance in plants.

Item Type: Article
Subjects: Q Science / természettudomány > QK Botany / növénytan > QK10 Plant physiology / növényélettan
SWORD Depositor: MTMT SWORD
Depositing User: MTMT SWORD
Date Deposited: 02 Jan 2019 15:08
Last Modified: 02 Jan 2019 15:09
URI: http://real.mtak.hu/id/eprint/89104

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