Zinc accumulation, photosynthetic gas exchange, and chlorophyll a fluorescence in Zn-stressed Miscanthus × giganteus plants
2018
Tip dokumenta:
Članak u časopisu (Recenzirana verzija)
,
© 2018 The Institute of Experimental Botany
Metapodaci
Prikaz svih podataka o dokumentuApstrakt:
Accumulation and distribution of zinc within Miscanthus × giganteus plants grown on elevated Zn concentrations and their photosynthetic performance were investigated. High concentrations of Zn in soils caused an increase of its concentrations in all plant organs. The bioconcentration factor, bioaccumulation factor, and translocation factor were lower than one indicating that M. × giganteus is an excluder plant species. Excessive Zn induced visible leaf damage, i.e. chlorosis and necrosis, only in the oldest leaves, pointing to Zn accumulation. Elevated amounts of Zn in leaves significantly lowered the photosynthetic rate, transpiration rate, stomatal conductance, intercellular CO2 concentrations, parameters of chlorophyll a fluorescence, and chlorophyll b content. Despite Zn excess in leaves, there was no severe reduction in the maximal quantum yield of PSII photochemistry, indicating a high photosynthetic capacity, high tolerance to elevated Zn concetrations, and ability of M. × giganteus to grow on Zn-contaminated soils.
Napomena:
This is a post-peer-review, pre-copyedit version of an article published in Photosynthetica. The final authenticated version is available online at: http://dx.doi.org/10.1007/s11099-018-0827-3
Ključne reči:
pigments; photosynthesis; phytoremediation; Zn toleranceIzvor:
Photosynthetica, 2018Finansiranje / projekti:
- Biodiverzitet biljnog sveta Srbije i Balkanskog poluostrva - procena, održivo korišćenje i zaštita (RS-MESTD-Basic Research (BR or ON)-173030)
- Ekofiziološke adaptivne strategije biljaka u uslovima multipnog stresa (RS-MESTD-Basic Research (BR or ON)-173018)
URI
http://link.springer.com/10.1007/s11099-018-0827-3https://radar.ibiss.bg.ac.rs/handle/123456789/3094