The herbal plant Salvia sclarea L. (clary sage) is classified to cadmium (Cd) accumulators and considered as a potential for phytoremediation of heavy metal polluted soil. However, the effect Cd only treatment on function photosynthetic apparatus S. sclarea, well mechanisms involved in tolerance have not yet been studied detail. This study was conducted examine integrative responses plants exposed high supply (100 µM) 3 8 days by investigating element nutrient uptake, oxidative stress...

Metal ions are fundamental elements for the maintenance of lifespan plants, animals and humans [...]

Exposure of Arabidopsis thaliana young and mature leaves to the herbicide paraquat (Pq) resulted in a localized increase hydrogen peroxide (H2O2) leaf veins neighboring mesophyll cells, but this was not similar two types. Increased H2O2 production concomitant with closed reaction centers (qP). Thirty min after Pq exposure despite induction photoprotective mechanism non-photochemical quenching (NPQ) leaves, lower mainly due higher activity ascorbate peroxidase (APX). Later, 60 exposure, total...

Drought, the major limiting factor for plant growth and crop productivity, affecting several physiological biochemical processes, is expected to increase in duration, intensity, frequency as a consequence of climate change. Plants have developed approaches either avoid or tolerate water deficit. response drought stress (DS), close stomata, reducing carbon dioxide (CO2) entry leaf, thus decreasing photosynthesis which results reduced synthesis essential organic molecules that sustain life on...

Salvia sclarea L. is a Cd2+ tolerant medicinal herb with antifungal and antimicrobial properties cultivated for its pharmacological properties. However, accumulation of high content in tissues increases the adverse health effects humans. Therefore, there serious demand to lower human intake. The purpose our study was evaluate mitigative role excess Zn2+ supply uptake/translocation toxicity clary sage. plants were treated (100 μM CdSO4) alone, combination (900 ZnSO4), modified Hoagland...

Salicylic acid (SA), an essential plant hormone, has received much attention due to its role in modulating the adverse effects of biotic and abiotic stresses, acting as antioxidant growth regulator. However, photosynthesis under non stress conditions is controversial. By chlorophyll fluorescence imaging analysis, we evaluated consequences foliar applied 1 mM SA on photosystem II (PSII) efficiency tomato (Solanum lycopersicum L.) plants estimated reactive oxygen species (ROS) generation....

Aspirin (Asp) is extensively used in human health as an anti-inflammatory, antipyretic, and anti-thrombotic drug. In this study, we investigated if the foliar application of Asp on tomato plants has comparable beneficial effects photosynthetic function to that salicylic acid (SA), with which it shares similar physiological characteristics. We assessed consequences Asp-spray photosystem II (PSII) efficiency plants, estimated reactive oxygen species (ROS) generation chloroplast ultrastructural...

Abstract Using chlorophyll (chl) fluorescence imaging, we studied the effect of mild (MiDS), moderate (MoDS) and severe (SDS) drought stress on photosystem II (PSII) photochemistry 4‐week‐old Arabidopsis thaliana . Spatio‐temporal heterogeneity in all chl parameters was maintained throughout water stress. After exposure to stress, maximum quantum yield PSII (F v /F m ) efficiency (Φ PSΙΙ decreased less proximal (base) than distal (tip) leaf. The parameter F after MoDS MiDS. Under MoDS,...

Inorganic nanoparticles (NPs) have been proposed as alternative fertilizers to suppress plant disease and increase crop yield. However, phytotoxicity of NPs remains a key factor for their massive employment in agricultural applications. In order investigate new effective, nonphytotoxic, inexpensive fungicides, the present study CuZn bimetallic (BNPs) synthesized antifungals, while assessment photosystem II (PSII) efficiency by chlorophyll fluorescence imaging analysis is utilized an...

We provide new data on the mechanism of Noccaea caerulescens acclimation to Cd exposure by elucidating process photosystem II (PSII) chlorophyll fluorescence imaging analysis. Seeds from metallophyte N. were grown in hydroponic culture for 12 weeks before 40 and 120 μM 3 4 days. At beginning Cd, we observed a spatial leaf heterogeneity decreased PSII photochemistry, that later recovered completely. This was achieved possibly through reduced plastoquinone (PQ) pool signaling. Exposure under...

We characterized zinc oxide nanoparticles (ZnO NPs) by dynamic light scattering (DLS) measurements, and transmission electron microscopy (TEM), while we evaluated photosystem II (PSII) responses, Zn uptake kinetics, hydrogen peroxide (H2O2) accumulation, in C. nodosa exposed to 5 mg L-1 10 ZnO NPs for 4 h, 12 24 48 h 72 h. Four after exposure NPs, noticed a disturbance of PSII functioning that became more severe However, observed hormetic response, with both time dose as the basal stress...

We investigated the influence of Salvia fruticosa colonization by arbuscular mycorrhizal fungi (AMF) Rhizophagus irregularis on photosynthetic function using chlorophyll fluorescence imaging analysis to evaluate light energy use in photosystem II (PSII) inoculated and non-inoculated plants. observed that plants used significantly higher absorbed photochemistry (ΦPSII) than exhibited significant lower excess excitation (EXC). However, increased ΦPSII did not result a reduced non-regulated...

Five-day exposure of clary sage (Salvia sclarea L.) to 100 μM cadmium (Cd) in hydroponics was sufficient increase Cd concentrations significantly roots and aboveground parts affect negatively whole plant levels calcium (Ca) magnesium (Mg), since competes for Ca channels, while reduced Mg are associated with increased tolerance. Total zinc (Zn), copper (Cu), iron (Fe) uptake but their translocation the decreased. Despite substantial leaves, without any observed defects on chloroplast...