Abstract
Chlorophyll content (chl), one of the most important physiological parameters related to plant photosynthesis, is usually used to predict plant potential and portable, non-destructive chlorophyll meters could be a valuable and effective tool for estimating Relative Chlorophyll Content (RCC) in leaves. In this study, two species of soluble inorganic Selenium forms, selenite (SeIV) and selenate (SeVI) at different concentrations were investigated on maize plants that were growing in nutrient solutions during 2 weeks and changes of RCC within this time was monitored. It means chlorophyll content of three leaves of maize when everyone grew completely was measured according to Special Products Analysis Division (SPAD) value and the results revealed that high concentrations of SeIV (10, 30 and 90 mg.kg-1) were toxic for maize even lower amounts (1 and 3 mg.kg-1) had effects of damage on it while this state wasn’t adjusted for lower concentrations of SeVI (1 and 3 mg.kg-1) and treated samples didn’t have significant differences with controls although in higher amounts (10 and 30 mg.kg-1) toxic effects were seen in them, too.
Highlights
Selenium (Se) is an essential micronutrient for the health of mammals and mainly enters food chains through plants
Relative Chlorophyll Content (RCC) within this time was monitored. It means chlorophyll content of three leaves of maize when everyone grew completely was measured according to Special Products Analysis Division (SPAD) value and the results revealed that high concentrations of SeIV (10, 30 and 90 mg.kg-1) were toxic for maize even lower amounts (1 and 3 mg.kg-1) had effects of damage on it while this state wasn’t adjusted for lower concentrations of SeVI (1 and 3 mg.kg-1) and treated samples didn’t have significant differences with controls in higher amounts (10 and 30 mg.kg-1) toxic effects were seen in them, too
SeIV uptake effects on RC Fig. 1 displays chlorophyll contents (SPAD value) in maize leaves at different concentrations of SeIV for three times of three leaves RCC measurements but samples that had been treated by more than 3 mg.kg-1 didn’t grow so that 90 mg.kg-1 treatments got dried and RCC measurement was impossible for them
Summary
Selenium (Se) is an essential micronutrient for the health of mammals and mainly enters food chains through plants. To date there have been few publications on Se uptake and assimilation in this plant Castrec-Rouelle et al (2011) and parallel to that, investigation of its effects on maize leaves’ chlorophyll content. Chlorophyll is a frequent organic chemical component because it is naturally present in plants, giving their specific coloration Withnallas et al (2003) as a photosynthetic pigment and an essential component of the plant photosystem. The objective of our study was to expose maize plants to Se in both forms of sodium selenite and sodium selenate as well as investigation of their uptake effects on maize leaves’ RCC
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