Lead effects on sorghum and soybean physiology in oxisols

Cândido, Geraldo S.; Lima, Francielle Roberta Dias de; Vasques, Isabela C.F.; Souza, Kamila Rezende Dázio de; Martins, Gabriel Caixeta; Pereira, Polyana; Engelhardt, Mateus Moreira; Reis, Rayner H. C. L.; Marques, João José

doi:10.1080/03650340.2020.1723004

Cited by 6 publications

(1 citation statement)

References 38 publications

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“…The study revealed significant induction of enzymes such as CAT and POX, along with increased levels of Pro and MDA in plants growing in lead-contaminated soil compared to control plants. Similar results were reported by Dey et al [74] for POX and by Jiang [75] for POX, Yang et al [76] for CAT, POX, MDA, Alamri et al [34] for CAT, MDA, Sędzik et al [35] for CAT, POX, Pro, MDA, Cândido et al [77] for CAT, MDA, Pirzadoh et al [78] for Pro, Navabpaur et al [73] for CAT, MDA, Khan et al [13] for CAT, POX, Pro, Ahmad et al [33] for Pro, Sędzik-Wójcikowska et al [36] for CAT, POX, Pro, MDA. However, conflicting results were presented by Verma and Dubey [55], Dey et al [74] for CAT, Sędzik et al [35] for CAT at the highest lead dose, and Li et al [79] for CAT and POX.…”

Section: Biochemical Parameterssupporting

confidence: 81%

Examining Nicotinamide Application Methods in Alleviating Lead-Induced Stress in Spring Barley

Smolik,

Sędzik-Wójcikowska

2024

Agronomy

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Cereals are a staple food in many regions of the world and are essential for global food security. Lead is one of the most significant environmental stressors, impacting plants throughout their life cycle and causing substantial damage to plant growth and development. It disrupts intracellular processes, thereby reducing plant productivity. The aim of this study was to determine the effect of exogenously applied vitamin PP (100 µM) (nicotinamide) on the morphological, physiological, and biochemical parameters of spring barley var. Eunova under lead stress (1 mM Pb(NO3)2) and to determine the most effective method of applying this vitamin in a pot experiment. Vitamin PP was applied exogenously through three different methods: seed soaking, foliar application, and soil irrigation. The application of 1 mM Pb(NO3)2 resulted in decreased root (from 13.9% to 19.9%) and shoot length (from 16.2% to 24.8%) and increased catalase (CAT) activity from 45% to 106%, and peroxidase (POX) activity from 39% to 46% compared to the control. Lead stress led to an increase in proline (Pro) content from 30 to 63% and comparatively in malondialdehyde (MDA) content (rising from 61% to 79.4%), as well as elevated assimilatory pigment content (by 35%) in barley grown in the pot experiment. Exogenous vitamin PP significantly and positively influenced the improvement of the measured morphological, biochemical, and physiological parameters, reducing the toxicity of lead salts. It was shown that the most effective method of vitamin PP application was achieved through foliar spraying and irrigation.

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