The Effect of Hydro and Proline Seed Priming on Growth, Proline and Sugar Content, and Antioxidant Activity of Maize Under Cadmium Stress

Overview

Journal Environ Sci Pollut Res Int

Publisher Springer

Specialties Environmental Health
Toxicology

Date 2018 Sep 28

PMID 30259326

Citations 10

Authors

Erna Karalija

Alisa Selovic

Affiliations

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Abstract

We tested the effect of seed hydro- and proline-priming on cadmium (Cd) tolerance in maize plants. Soil supplemented with two concentrations of cadmium was used for the investigation. Cadmium content, fresh and dry mass, shoot length, leaf length and width, chlorophyll, proline, sugar and protein content, and antioxidant potential in 4-week-old plants were analysed. Cadmium content in soil and maize shoots was determined by flame atomic absorption spectrometry. Accumulation of Cd was observed for all plants, and highest Cd concentration was recorded in seedlings grown from proline-primed seeds with no visual signs of Cd toxicity. In proline-primed plants, increase in leaf length, photosynthetic pigments, and sugar and proline content as well as changes in antioxidant enzyme activities was recorded. Results obtained in this study suggest that proline-priming of maize seeds induces activation of defensive mechanisms, such as proline and sugar synthesis, which in return alleviates Cd toxicity on maize growth with increased Cd accumulation comparing to control plants.

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