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Spectral properties of the Cu-hyperaccumulating moss Scopelophilacataractae

Paper ID Volume ID Publish Year Pages File Format Full-Text
30853 44508 2011 6 PDF Available
Title
Spectral properties of the Cu-hyperaccumulating moss Scopelophilacataractae
Abstract

To determine the characteristics of a Cu-hyperaccumulating moss Scopelophilacataractae and the influence of Cu on its structure and on chlorophyll (Chl), we measured reflectance and fluorescence (FL) spectra of S.cataractae samples with different Cu concentrations before and after wetting and the absorption spectra of Chl extracted from these samples. We found relationships between the spectral properties and Cu concentration. These relationships can be explained as follows. The higher the Cu concentration is, the lower is the plasticity of the cell wall, and the smaller is the increase in illuminated area due to the opening of the leaves after wetting. This results in a smaller increase in absorption and smaller decrease in reabsorption of the FL by Chl itself, and accordingly, a smaller increase in the FL band of Chl after wetting. Moreover, we found that the Chl concentration in S.cataractae is much higher than that in other common mosses and is correlated with an increase in the FL band of Chl after wetting. The remarkable increase in FL seen in S.cataractae and the slight increase in FL observed in other common mosses after wetting can be explained based on these findings.

► Cu-hyperaccumulating moss Scopelophilacataractae with different Cu concentrations. ► Negative correlations between the Cu concentration and the spectral properties. ► We can explain these negative correlations. ► The chlorophyll a concentration is much higher than that of other common mosses. ► No negative effects of Cu on chlorophyll of S.cataractae.

Keywords
Moss; Copper; Hyperaccumulator; Chlorophyll; Absorption; Fluorescence
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Spectral properties of the Cu-hyperaccumulating moss Scopelophilacataractae
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology B: Biology - Volume 104, Issue 3, 2 September 2011, Pages 467–472
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us