Hydrogen sulfide alleviates cadmium-induced morpho-physiological and ultrastructural changes in Brassica napus

Citric acid assisted phytoremediation of copper by Brassica napus L.

“…Among Brassica species, Brassica napus has been found relatively more tolerant to excessive Cu concentrations than other Brassica species possibly due to its specific physiological and biochemical activities (Feigl et al, 2013;Peško and Králová, 2013). Thus, it can be an ideal candidate for the phytoextraction of Cu from contaminated soils Ali et al, 2014aAli et al, , 2014b Success of phytoextraction depends upon the metal solubility and availability in soil for root uptake. Metal bioavailability mainly depends upon soil characteristics such as clay content, pH, cation exchange capacity and soil organic matter (Quartacci et al, 2000;Anwaar et al, 2014;Adrees et al, 2015aAdrees et al, , 2015b.…”

Hydrogen sulfide: A novel component in Arabidopsis peroxisomes which triggers catalase inhibition

“…However, it has recently been found to have properties similar to those of multifunctional signaling molecules (NO and H 2 O 2 ) (Lisjak et al ; Gotor et al ; Hancock and Whiteman ; Li et al ; Yamasaki and Cohen ; Filipovic and Jovanovic ). As with NO and H 2 O 2, exogenous applications of H 2 S in plants have been shown to counteract the toxic effects of stresses, such as heavy metal and salinity (Zhang et al ; Chen et al , , ; Ali et al ; Bharwana et al ; Kharbech et al ; Corpas et al ). In plant systems, several enzymes are capable of generating H 2 S, which is part of the cysteine (Cys) metabolism.…”

Regulation of physiological aspects in plants by hydrogen sulfide and nitric oxide under challenging environment

“…H 2 S reduced cadmium-induced oxidative stress in rice, by enhancing redox status and the activities of antioxidative and methylglyoxal detoxifying enzymes (Mostofa et al 2015). H 2 S-mediated Cd tolerance via modulation of antioxidative pathway has also been reported in B. napus (Ali et al 2014a). Attenuation of Cd toxicity was facilitated in alfalfa (M. sativa L.) and bermudagrass (Cynodon dactylon L.) via pretreatment of seedlings with H 2 S and NO , Shi et al 2014.…”

“…They found that 100 μM sodium hydrosulfide (NaHS) treatment increased the net leaf photosynthetic rate by increasing the expression and activity of ribulose‐1,5‐bisphosphate carboxylase/oxygenase (Rubisco), enhancing photosynthetic electron transfer via increasing the activity of proteins involved in thiol redox modification and improving chloroplast biogenesis. Ali et al (, b) showed that H 2 S alleviated lead (Pb)‐induced stress in Brassica napus by improving net photosynthetic rate and ultrastructural changes of organelles, including thylakoid membranes inside the chloroplasts. On the other hand, as the chloroplast is one of the key sites of NO biosynthesis, it inhibits photosynthesis either by PTMs of key components of the photosystems or proteins that affect assimilatory processes of photosynthesis and thus plant growth and productivity (Procházková et al ).…”

“…Mostofa et al (2015) Brassica napus Alleviates the toxic effects of Cd and improves plant growth, enhances the photosynthetic parameters, enhances the antioxidant activities and maintains cellular structures in the leaves and rootsAli et al (2014a) Medicago sativa Decreases lipid peroxidation and differentially modulates the activities and transcripts of antioxidant enzymes, including SOD, APX and PODLi et al (2012) Solanum nigrum NO Increases lateral roots and adventitious rootsXu et al (2011) Cicer arietinum Decreases ion leakage and lipid peroxidation levels, increases the activities of antioxidant enzymes and the redox ratios; exhibits positive effect on seed yield and Cd accumulationKumari et al (2010) Medicago truncatula Improves root growth and reduces ROS accumulation in roots; reduces auxin degradation by inhibiting the activity of IAA oxidase; enhances the uptake of K + decrease GSH and ascorbate (ASC) content; increase the specific activities of antioxidant enzymes. Prevents accumulation of NH 4 decrease the activity of glutamine synthetase, and increase the specific activity of phenylalanine ammonia lyaseHsu and Kao (2004) Helianthus annuus Significantly reversed the loss in dry weight and chlorophyll decay induced by the metal; decreases lipid peroxidation and ASC content and increase in GSH content; decreases SOD activity and increases CAT activityLaspina et al induced MDA accumulation, increases chlorophyll content, net photosynthetic rate and maximal photochemical efficiency (Fv/Fm); significant elevation of depressed CAT activities; improves root POD activity; reduces Al uptake, but elevated concentrations of S, P, Ca, Mg and Fe in plants Dawood et al (2012) Triticum aestivum Increases the activities of amylases and esterases, and maintains lower levels of MDA and H 2 O 2 in germinating seeds of wheat; increases the activities of guaiacol peroxidase, APX, SOD and CAT, and decreases the activities of LOX.…”