Zinc and selenium as modulating factors of the anatomy and physiology of Billbergia zebrina (Bromeliaceae) during in vitro culture
| Autor: | A.F.C. Souza, Andreia Barcelos Passos Lima Gontijo, Antelmo Ralph Falqueto, João Paulo Rodrigues Martins, P.C.S. Braga, Luiz Carlos de Almeida Rodrigues |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
Physiology chemistry.chemical_element Plant Science Zinc macromolecular substances Photosynthesis 01 natural sciences biomonitors chemistry.chemical_compound Nutrient lcsh:Botany polycyclic compounds Billbergia zebrina biology food and beverages Bromeliaceae 04 agricultural and veterinary sciences Anatomy biology.organism_classification bromeliad lcsh:QK1-989 chemistry Chlorophyll Bioaccumulation 040103 agronomy & agriculture 0401 agriculture forestry and fisheries plant anatomy Selenium jip test 010606 plant biology & botany |
| Zdroj: | Photosynthetica, Vol 58, Iss 5, Pp 1068-1077 (2020) |
| ISSN: | 1573-9058 0300-3604 |
| Popis: | Deleterious effects induced by high zinc (Zn) concentrations can be alleviated with selenium (Se) co-exposure. Therefore, we analyzed the morphophysiological changes of Billbergia zebrina in response to Zn and Se co-exposure. Plants were cultured in media containing three Zn concentrations (0, 30, and 300 μM) combined with two Se concentrations (0 and 4 μM), for a total of six treatments. At 75 d of culture, the leaf anatomy, chlorophyll (Chl) a fluorescence, and contents of photosynthetic pigments (Chl) and nutrients were analyzed. The total Chl content declined with rising Zn concentrations. Plants cultured with Se presented a decrease in the Chl a/b ratio and greater total Chl content. Positive L- and K-bands were verified under Se absence and with 30 and 300 μM Zn. Plants showed bioaccumulation capacity and tolerance to excess Zn. Se acted as a modulator to alleviate the Zn stress. |
| Databáze: | OpenAIRE |
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