Journal of Environmental Science International (한국환경과학회지)
- Volume 1 Issue 1
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- Pages.13-21
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- 1992
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- 1225-4517(pISSN)
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- 2287-3503(eISSN)
Toxic Effects and Distribution of Mercury in Barley Seedlings
보리 유식물에 처리한 수은의 분포 및 독성 연구
Abstract
The inhibitory effects of mercury ions on the growth of barley seedlings were studied and the distribution of metal elements in the organs of treated plants was investigated by using synchrotron radiation induced X-ray emission (SRIXE). Although the treatment of mercury ions caused growth inhibition, the mercury-specific increase in variable fluorescence and the abolishment of energy-dependent quenching in broken barley chloroplasts as shown by Moon et at. (1992) were not observed in the leaves of growth-inhibited seedlings. Instead the treatment of mercury decreased Fmax and Fo values. However, Fmax/Fo ratio and photochemical and nonphotochemical quenching coefficients were not affected significantly. By SRIXE analysis of
Keywords
- barley;
- heavy metal distribution;
- mercury;
- growth;
- chlorophyll fluorescence;
- photochemical quenching;
- non-photochemical quenching;
- SRIXE;
- X-ray emission