Journal of the Korean Society of Visualization (한국가시화정보학회지)

The Korean Society of Visualization (한국가시화정보학회)
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X-ray Micro-imaging of Arsenic Absorption of Sap Flow in Xylem Vessels of Pteris

X-ray 영상기법을 이용한 비소 흡수가 고사리 내부 수액 거동에 미치는 영향 연구

  • Published : 2007.06.30
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Abstract

The global environment is deteriorating at an alarming rate, despite of enhanced international environmental regulation. Many studies have been performed to reduce toxic pollutants. Recently, plant-based phytoremediation technology for moving toxic contaminants from soil and water has been receiving large attention. Arsenic-contaminated soil is one of the major pollutant sources for drinking water. Pteris erotica has been known as a hyper-accumulator of arsenic from soils. In this study, we investigated the effect of arsenic absorption on sap flow inside xylem vessels of Pteris. The synchrotron X-ray micro-imaging technique was employed to monitor the refilling process of water containing arsenic inside the xylem vessels of Pteris's leaves and stems non-invasively. The captured phase-contrast X-ray images show both anatomy of internal structure and transport of water inside Pteris. The exposure of Pteris to arsenic solution was found to increase largely the water raise speed in xylem vessels. The present results would provide important information needed for understanding the mechanisms of accumulation and transportation of toxic materials in plants.

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References

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  1. Effect of Sulfur Powder and Citric Acid on Arsenic Phytoremediation Using Pteris multifida in Forest Soil vol.17, pp.1, 2014, https://doi.org/10.13087/kosert.2014.17.1.001