Free amino acid regulation in fronds and roots of two pteris cretica L. Ferns under arsenic stress

0534945 - ÚEB 2021 RIV CZ eng J - Journal Article
Zemanová, V. - Pavlíková, D. - Pavlík, Milan
Free amino acid regulation in fronds and roots of two pteris cretica L. Ferns under arsenic stress.
Plant, Soil and Environment. Roč. 66, č. 10 (2020), s. 483-492. ISSN 1214-1178. E-ISSN 1805-9368
R&D Projects: GA ČR(CZ) GA17-10591S
Institutional support: RVO:61389030
Keywords : Amide * Metalloid * Pyruvate family * Serine family * Shikimate family * Toxicity
OECD category: Agriculture
Impact factor: 1.799, year: 2020
Method of publishing: Open access
http://doi.org/10.17221/369/2020-PSE

In the present study, free amino acid (AA) regulation in As hyperaccumulating ferns was evaluated in a pot experiment to determine the relationship between As stress and the characteristic change in metabolism of AAs. The ferns Pteris cretica cv. Albo-lineata (Pc-Al) and cv. Parkerii (Pc-Pa) were exposed to As tre¬atments at 0, 20, 100, and 250 mg As/kg for 90 days. Greater As content, as well as higher biomass production, were identified in Pc-Al compared with Pc-Pa. The results indicate a disturbance in N and C metabolisms. Pc-Pa accumulated higher amounts of free AAs than Pc-Al. The total free AA content, as well as the ratio of the main AA family pathway (glutamate family), were increased by the accumulation of toxic As in the ferns. Pc-Al tolerates higher As doses better due to changes in AA biosynthesis, however, at higher As doses, Pc-Pa upregulated AA biosynthesis due to As toxicity. The most abundant free AAs of ferns was glutamine, which was enhanced by As.
Permanent Link: http://hdl.handle.net/11104/0313073