RT journal article
T1 Salinity Modulates Juncus acutus L. Tolerance to Diesel Fuel Pollution
A1 Pérez Romero, Jesús Alberto
A1 Barcia-Piedras, José-María
A1 Redondo-Gómez, Susana
A1 Caçador, Isabel
A1 Duarte, Bernardo
A1 Mateos-Naranjo, Enrique
A2 Biología
K1 petroleum-derived substances (PDS)
K1 chlorophyll a fluorescence
K1 halophyte
K1 abiotic stress
K1 physiology
AB Soil contamination with petroleum-derived substances such as diesel fuel has becomea major environmental threat. Phytoremediation is one of the most studied ecofriendly low-costsolutions nowadays and halophytes species has been proved to have potential as bio-tools for thispurpose. The extent to which salinity influences diesel tolerance in halophytes requires investigation.A greenhouse experiment was designed to assess the effect of NaCl supply (0 and 85 mM NaCl) onthe growth and photosynthetic physiology of Juncus acutus plants exposed to 0, 1 and 2.5% dieselfuel. Relative growth rate, water content and chlorophyll a derived parameters were measured inplants exposed to the different NaCl and diesel fuel combinations. Our results indicated that NaClsupplementation worsened the effects of diesel toxicity on growth, as diesel fuel at 2.5% reducedrelative growth rate by 25% in the absence of NaCl but 80% in plants treated with NaCl. Nevertheless,this species grown at 0 mM NaCl showed a high tolerance to diesel fuel soil presence in RGR butalso in chlorophyll fluorescence parameters that did not significantly decrease at 1% diesel fuelconcentration in absence of NaCl. Therefore, this study remarked on the importance of knowing thetolerance threshold to abiotic factors in order to determine the bioremediation capacity of a speciesfor a specific soil or area. In addition, it showed that NaCl presence even in halophytes does notalways have a positive effect on plant physiology and it depends on the pollutant nature.
PB MDPI
SN 2223-7747
YR 2022
FD 2022
LK http://hdl.handle.net/10498/26803
UL http://hdl.handle.net/10498/26803
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 14-nov-2026