Multi-component antioxidative system and robust carbohydrate status, the essence of plant arsenic tolerance

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389030%3A_____%2F20%3A00531599" target="_blank" >RIV/61389030:_____/20:00531599 - isvavai.cz</a>

Alternative codes found

RIV/00216208:11310/20:10413321

Result on the web

<a href="http://doi.org/10.3390/antiox9040283" target="_blank" >http://doi.org/10.3390/antiox9040283</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/antiox9040283" target="_blank" >10.3390/antiox9040283</a>

Result language

angličtina

Original language name

Multi-component antioxidative system and robust carbohydrate status, the essence of plant arsenic tolerance

Original language description

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.

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10601 - Cell biology

Project

<a href="/en/project/LO1417" target="_blank" >LO1417: Centre of Experimental Plant Biology of CU</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2020

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

ANTIOXIDANTS

ISSN

2076-3921

e-ISSN

—

Volume of the periodical

9

Issue of the periodical within the volume

4

Country of publishing house

CH - SWITZERLAND

Number of pages

21

Pages from-to

283

UT code for WoS article

000536961200033

EID of the result in the Scopus database

2-s2.0-85084655162