Počet záznamů: 1
Multi-component antioxidative system and robust carbohydrate status, the essence of plant arsenic tolerance
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SYSNO ASEP 0531599 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Multi-component antioxidative system and robust carbohydrate status, the essence of plant arsenic tolerance Tvůrce(i) Kofroňová, M. (CZ)
Hrdinová, A. (CZ)
Mašková, P. (CZ)
Tremlová, J. (CZ)
Soudek, Petr (UEB-Q) RID, ORCID
Petrová, Šárka (UEB-Q) RID, ORCID
Pinkas, D. (CZ)
Lipavská, H. (CZ)Celkový počet autorů 8 Číslo článku 283 Zdroj.dok. Antioxidants. - : MDPI
Roč. 9, č. 4 (2020)Poč.str. 21 s. Jazyk dok. eng - angličtina Země vyd. CH - Švýcarsko Klíč. slova Antioxidant ; Antioxidant enzyme ; Arsenate ; Arsenic ; Arsenite ; Oxidative stress ; ros ; Saccharides ; Tolerant and sensitive tobacco Vědní obor RIV EA - Morfologické obory a cytologie Obor OECD Cell biology Způsob publikování Open access Institucionální podpora UEB-Q - RVO:61389030 UT WOS 000536961200033 EID SCOPUS 85084655162 DOI 10.3390/antiox9040283 Anotace Arsenic (As) contaminates the food chain and decreases agricultural production through impairing plants, particularly due to oxidative stress. To better understand the As tolerance mechanisms, two contrasting tobacco genotypes: As-sensitive Nicotiana sylvestris and As-tolerant N.tabacum, cv. ‘Wisconsin’ were analyzed. The most meaningful differences were found in the carbohydrate status, neglected so far in the As context. In the tolerant genotype, contrary to the sensitive one, net photosynthesis rates and saccharide levels were unaffected by As exposure. Importantly, the total antioxidant capacity was far stronger in the As-tolerant genotype, based on higher antioxidants levels (e.g., phenolics, ascorbate, glutathione) and activities and/or appropriate localizations of antioxidative enzymes, manifested as reverse root/shoot activities in the selected genotypes. Accordingly, malondialdehyde levels, a lipid peroxidation marker, increased only in sensitive tobacco, indicating efficient membrane protection in As-tolerant species. We bring new evidence of the orchestrated action of a broad spectrum of both antioxidant enzymes and molecules essential for As stress coping. For the first time, we propose robust carbohydrate metabolism based on undisturbed photosynthesis to be crucial not only for subsidizing C and energy for defense but also for participating in direct reactive oxygen species (ROS) quenching. The collected data and suggestions can serve as a basis for the selection of plant As phytoremediators or for targeted breeding of tolerant crops. Pracoviště Ústav experimentální botaniky Kontakt David Klier, knihovna@ueb.cas.cz, Tel.: 220 390 469 Rok sběru 2021 Elektronická adresa http://doi.org/10.3390/antiox9040283
Počet záznamů: 1