Negative Effects on Photosynthesis and Chloroplast Pigments Exposed to Lead and Aluminum: A Meta-Analysis

Abstract

HIGHLIGHTS In general, toxic metals cause negative effects on plants' physiology. Lead reduces chlorophyll B, negatively impacting photosynthesis and the photosystem II. Aluminum acts negatively specially in chloroplast pigments. Fabaceae family do not present changes in physiology when exposed to those Toxic Metals.

Can species Cedrela fissilis Vell. be used in sites contaminated with toxic aluminum and cadmium metals?

“…Moreover, high concentrations of Al have been reported to damage thylakoid membranes and replace compounds in the chlorophyll metabolic pathway (Marques et al 2018). Aluminum can also affect chlorophyll biosynthesis by inhibiting δaminolavulinic acid dehydratase activity, which accounts for chlorophyll molecule and cytochrome formation (Cunha Neto et al 2020). Therefore, higher concentrations of this ion can change chlorophyll and carotenoid composition, which can limit plant metabolic potential (Mendes et al 2018).…”

“…The bioaccumulation of these metals can be found at different environmental levels (Huihui et al 2020). In particular, metals such as cadmium (Cd) and aluminum (Al) are potentially toxic to different organisms even at low concentrations (Cunha Neto et al 2020).…”

“…Aluminum is one of the most abundant metals on Earth's crust (Zhou et al 2017). Its toxicity is one of the biggest limitations to plant yield in acidic soils in tropical and subtropical sites worldwide (Cunha Neto et al 2020). Brazilian soils are mostly weath-ered and acidic due to high Al and manganese (Mn) contents, as well as to low sum and saturation of bases (Cunha et al 2018).…”