Combined cadmium-zinc interactions alter manganese, lead, copper uptake by Melissa officinalis

Dorota Adamczyk-Szabela,Zdzisława Romanowska-Duda,Wojciech M Wolf,Katarzyna Lisowska

doi:10.1038/s41598-020-58491-9

Dorota Adamczyk-Szabela, Zdzisława Romanowska-Duda + Show 2 more

Open Access

https://doi.org/10.1038/s41598-020-58491-9

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Abstract

Farmland soil typical for the Polish rural environment was used in pot experiment to estimate the impact of cadmium and zinc on the manganese, lead and copper uptake by lemon balm (Melissa officinalis L). Bioavailable and total forms of investigated metals in soil and metal concentrations in plants were determined by atomic absorption spectrometry. The plant photosynthesis indicators were also examined. Intensification of photosynthesis upon the high zinc and cadmium soil supplementation was observed. This effect was not detected at low metal concentrations. ANOVA proved that cadmium and zinc treatments influenced manganese, lead and copper transfer from soil and their concentration in plants. Zinc uptake and accumulation in either roots or above-ground parts in plant was inversely proportional to cadmium concentration in soil. Manganese concentration in roots decreased upon the soil supplementation with either zinc or cadmium. It suggests that the latter ions are transported via symplastic pathways and compete with manganese for similar transporters. The opposite situation was observed for lead and copper. Soil supplementation with cadmium and zinc affects manganese, lead and copper concentrations and photosynthesis intensity in lemon balm plant. The following combined interactions in either normal or stress conditions are important indicators of the migration pathways.

Highlights

Farmland soil typical for the Polish rural environment was used in pot experiment to estimate the impact of cadmium and zinc on the manganese, lead and copper uptake by lemon balm (Melissa officinalis L)
In this publication we show the mutual influence of zinc and cadmium on manganese, lead and copper uptake by the lemon balm (Melissa officinalis L.)
Metal concentrations as determined in Melissa officinalis are below those limits

Summary

Introduction

Farmland soil typical for the Polish rural environment was used in pot experiment to estimate the impact of cadmium and zinc on the manganese, lead and copper uptake by lemon balm (Melissa officinalis L). Soil supplementation with cadmium and zinc affects manganese, lead and copper concentrations and photosynthesis intensity in lemon balm plant. The herb fertility and yield as defined by biomass production and plant growth rates are strongly related to the intensity of photosynthesis This process may be inhibited by metal absorption. In this publication we show the mutual influence of zinc and cadmium on manganese, lead and copper uptake by the lemon balm (Melissa officinalis L.). Both former metals are prone to associated interactions[13,14]. Their concentrations were chosen upon our preliminary experiments on herbal plants and are below toxicity values as suggested by: Kabata-Pendias and Pendias[18]; Lux et al.[19]; White and Brown[20]

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