Physiological Effects of Mercury on Handroanthus impetiginosus (Ipê Roxo) Plants DOI Creative Commons
Evandro Oliveira, Daniela Roberta Borella,

Vinícius José Santos Lopes

et al.

Agronomy, Journal Year: 2025, Volume and Issue: 15(3), P. 736 - 736

Published: March 19, 2025

Mercury (Hg) poses significant risks to human health, the environment, and plant physiology, with its effects influenced by chemical form, concentration, exposure route, organism vulnerability. This study evaluates physiological impacts of Hg on Handroanthus impetiginosus (Ipê Roxo) seedlings through SPAD index measurements, chlorophyll fluorescence analysis, quantification in tissues. Four-month-old were exposed for eight days distilled water containing at 0, 1, 3, 5, 7 mg L−1. The decreased 28.17% L−1, indicating reduced photosynthetic capacity. Chlorophyll a analysis revealed 50.58% decline maximum efficiency (Fv/Fm) 58.33% reduction quantum yield (ΦPSII) along an 83.04% increase non-photochemical quenching (qn), suggesting oxidative stress PSII damage. Transpiration 26.7% 1 L−1 55% correlating levels leaf senescence. Absorption, translocation, bioconcentration, bioaccumulation factors varied among treatments. accumulated mainly stems (40.23 μg g−1), followed roots (0.77 g−1) leaves (2.69 limited translocation leaves. These findings highlight Hg’s harmful H. impetiginosus, ecologically commercially valuable species, addressing gap research tolerance phytoremediation potential.

Language: Английский

Physiological Effects of Mercury on Handroanthus impetiginosus (Ipê Roxo) Plants DOI Creative Commons
Evandro Oliveira, Daniela Roberta Borella,

Vinícius José Santos Lopes

et al.

Agronomy, Journal Year: 2025, Volume and Issue: 15(3), P. 736 - 736

Published: March 19, 2025

Mercury (Hg) poses significant risks to human health, the environment, and plant physiology, with its effects influenced by chemical form, concentration, exposure route, organism vulnerability. This study evaluates physiological impacts of Hg on Handroanthus impetiginosus (Ipê Roxo) seedlings through SPAD index measurements, chlorophyll fluorescence analysis, quantification in tissues. Four-month-old were exposed for eight days distilled water containing at 0, 1, 3, 5, 7 mg L−1. The decreased 28.17% L−1, indicating reduced photosynthetic capacity. Chlorophyll a analysis revealed 50.58% decline maximum efficiency (Fv/Fm) 58.33% reduction quantum yield (ΦPSII) along an 83.04% increase non-photochemical quenching (qn), suggesting oxidative stress PSII damage. Transpiration 26.7% 1 L−1 55% correlating levels leaf senescence. Absorption, translocation, bioconcentration, bioaccumulation factors varied among treatments. accumulated mainly stems (40.23 μg g−1), followed roots (0.77 g−1) leaves (2.69 limited translocation leaves. These findings highlight Hg’s harmful H. impetiginosus, ecologically commercially valuable species, addressing gap research tolerance phytoremediation potential.

Language: Английский

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