Calcium invigorates the cadmium-stressed Brassica napus L. plants by strengthening their photosynthetic system

Abstract

This study suggests that Ca(2+) in the proximity of plasma membrane is proficient in alleviating Cd toxicity by reducing the cell-surface negativity and competing for Cd(2+) ion influx. Consequently, both the plant growth and activity of diurnal photosynthetic system remain the least altered under Cd-provoked toxicity stress.

Soil Contamination with Metals

“…The authors further observed that higher Cd levels were responsible for damaging chloroplasts and mitochondria. Reduction in plant growth under Cd stress was also suggested by Wan et al (2011), who observed significant reductions in photosynthesis and nutrient uptake in Brassica napus seedlings.…”

Calcium deficiency increases Cd toxicity and Ca is required for heat-shock induced Cd tolerance in rice seedlings

“…1 and 2). There have been reports showing that exogenous Ca application alleviates Cd stress in plants (Ismai, 2008;Wan et al, 2011).…”

Citric acid assisted phytoremediation of copper by Brassica napus L.

“…2; 3A). Decrease in chlorophyll contents might be result of displacement of Mg required for chlorophyll biosynthesis as suggested by Wan et al (2011) and/or ultra-structural alteration of chloroplast under metal toxicity (Yruela, 2009;Gill et al, 2015). Damage to photosynthetic machinery seems to be associated with Cu translocation into leaf tissues, which could impair lamalar membrane of choloroplast (Najeeb et al, 2009).…”