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Nitrogenous nutrition affects uptake of arsenic and defense enzyme responses in wheat
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SYSNO ASEP 0544004 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Nitrogenous nutrition affects uptake of arsenic and defense enzyme responses in wheat Author(s) Maglovski, M. (SK)
Rybanský, L. (SK)
Bujdoš, M. (SK)
Adamec, Lubomír (BU-J) RID, ORCID
Bardáčová, M. (SK)
Blehová, A. (SK)
Matušíková, I. (SK)Source Title Polish Journal of Environmental Studies. - : Polish Journal of Environmental Studies - ISSN 1230-1485
Roč. 30, č. 3 (2021), s. 2213-2231Number of pages 19 s. Language eng - English Country PL - Poland Keywords inducible defense ; glucanhydrolases ; Triticum aestivum Subject RIV CE - Biochemistry OECD category Biochemistry and molecular biology Method of publishing Open access Institutional support BU-J - RVO:67985939 UT WOS 000631871300003 EID SCOPUS 85102127630 DOI 10.15244/pjoes/127912 Annotation Nitrogenous nutrition influences the availability of other plant resources and affects plant defense responses. A series of 8 different NH4NO3 concentrations, ranging from zero to excessive nitrogen (35 mM N), was applied in growth media to hydroponically grown wheat (Triticum aestivum). The plants were grown at a sublethal concentration of arsenic (5 mM As3+) for 10 days and foliar accumulation of As, N and P was determined. Induction of defense-related chitinase and beta-1,3-glucanase enzyme isoforms was quantified upon the separation of plant protein extracts in polyacrylamide gels. As3+ interfered with N and P accumulation in shoots and strongly activated several enzyme isoforms. These responses varied with the N supply and indicated a low rate of As accumulation at low N concentrations. On the other hand, limited As transfer to shoots was a clear benefit at high N concentrations. Nevertheless, both extreme N concentrations restricted the growth. Several enzyme isoforms of both chitinases and beta-1,3-glucanases exerted sensitivity to As3+, N supply or both. Their individual responses, however, contradict the generally accepted view on positive correlation between these defense molecules and N nutrition. Impacts of interplay between As3+ toxicity and nutritional stress on wheat responses are discussed. Workplace Institute of Botany Contact Martina Bartošová, martina.bartosova@ibot.cas.cz, ibot@ibot.cas.cz, Tel.: 271 015 242 ; Marie Jakšová, marie.jaksova@ibot.cas.cz, Tel.: 384 721 156-8 Year of Publishing 2022 Electronic address http://hdl.handle.net/11104/0321075
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