The chlorophyte microalga Chlorella sorokiniana was tested for the bioremediation of heavy metals pollution. It cultured with different concentrations Cu2+, Cd2+, As (III) and (V), showing a significant inhibition on its growth at 500 µM 250 750 AsO33- 5 mM AsO43- or higher. Moreover, consumption ammonium also studied, differences higher than 1 Cu2+ (III), (V). determination intracellular conce...

Galdieria partita, a unicellular red alga isolated from acidic hot springs and tolerant to sulfur dioxide, has at least two ascorbate peroxidase (APX) isozymes. This was the first report to demonstrate that two isozymes of APX are found in algal cells. Two isozymes were separated from each other at the hydrophobic chromatography step of purification and named APX-A and APX-B after the elution o...

Citrus Tristeza disease, caused by CTV (Citrus tristeza virus), committs citrus plantations around the world and specifically attacks phloem tissues of the plant. The virus exists as a mixture of more or less severe variants, which may or may not cause symptoms of Tristeza. The objective of this study was to analyze the changes caused by CTV in the proteome of stems of sweet orange, as well as ...

In Cameroon, tomato yields remain low due to attack by pathogens and insects. Phytophtora infestans (PI) is a phytopathogenic fungus responsible for the downy mildew of tomatoes, fungal disease enormous economic losses. To contribute search means control, stimulatory effect defence system extracts some plants was evaluated. Tomato were treated with aqueous macerates Callistemon citrinus (C. cit...

Heat stress can impact crop development and yield amino acids play diverse essential roles in plants. This work aimed to study the long-term effects of foliar spray with L-arginine antioxidant machinery, physiology, nutrition, productivity fruit quality tomato plants subjected transient heat stresses. Six concentrations were sprayed on plants: 0 (control), 0.10, 0.25, 0.50, 1.0 2.0 g·L–1. The c...

Background: The aim of this research was to investigate the efficiency methods overcome primary dormancy and biochemical processes associated with germination Erythrina falcata Benth seeds. Seeds were submitted overcoming treatments water uptake pattern analysed. We then evaluated activity antioxidant enzymes SOD, CAT, APX, quantified lipid peroxidation levels, hydrogen peroxide content total p...

C2H2-type zinc finger proteins (ZFPs) have been shown to play important roles in the responses of plants to oxidative and abiotic stresses, and different members of this family might have different roles during stresses. Here a novel abscisic acid (ABA)- and hydrogen peroxide (H₂O₂)-responsive C2H2-type ZFP gene, ZFP36, is identified in rice. The analyses of ZFP36-overexpressing and silenced tr...

Selenium (Se) contamination due to industrial activities has received increasing concerns. Phytoremediation has been suggested to be an efficient and feasible way to remove Se from Se-contaminated environment. Recently, an arsenic (As) hyperaccumulator Pteris vittata L. (Chinese Brake fern) was found to be a Se accumulator. This study was carried out to investigate Se accumulation mechanisms co...

Sapodilla is one of the important fruit crops in tropical area which has problem with seed germination. So Manilkara hexandra (kherol) is generally used as a rootstock for sapodilla. This experiment was performed to assess the morphological changes and antioxidant enzymatic activity of Manilkara hexandra seedling under salinity condition. A pot experiment was carried out in a greenhouse using d...

Callus cultures initiated from red beet tubers were acclimated to 75 or 100 mM NaCl salinity by exposing them gradually increasing concentrations. The callus lines displayed growth rates comparable the control culture cultivated on NaCl-free medium. Several antioxidant system components analyzed assess role of defense in callus’s ability proliferate salt-supplemented media. It was found that pr...