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POTASSIUM EFFLUX BY LICHEN THALLI FOLLOWING EXPOSURE TO AQUEOUS SULPHUR DIOXIDE.

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Title: POTASSIUM EFFLUX BY LICHEN THALLI FOLLOWING EXPOSURE TO AQUEOUS SULPHUR DIOXIDE.
Authors: Puckett, K. J.1, Tomassini, F. D.2, Nieboer, E.2, Richardson, D. H. S.2
Source: New Phytologist. Jul77, Vol. 79 Issue 1, p135-145. 11p.
Subjects: Potassium, Lichens, Sulfur dioxide, Biological membranes, Tissue fixation (Histology), Photosynthesis
Abstract: Potassium efflux is a useful experimental quantity for assessing damage to lichens exposed to SO2. This SO2--induced K+ efflux is biphasic in response to increasing concentrations of aqueous SO2. The first phase can be extrapolated to identify the SO2 concentration at which no K+ release occurred above the control values. This threshold concentration was used to determine the relative sensitivities of various lichen species. Good agreement was observed between the total K+ lost and the reduction in the total photosynthetic 14C-fixation rates. The magnitude of the SO2--induced K+ efflux indicated that release occurred from intracellular sources. The kinetics of the release process and the effects of SO2 on membrane integrity are discussed. [ABSTRACT FROM AUTHOR]
Copyright of New Phytologist is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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DbLabel: Engineering Source
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PubType: Academic Journal
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  Data: POTASSIUM EFFLUX BY LICHEN THALLI FOLLOWING EXPOSURE TO AQUEOUS SULPHUR DIOXIDE.
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  Data: <searchLink fieldCode="AR" term="%22Puckett%2C+K%2E+J%2E%22">Puckett, K. J.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Tomassini%2C+F%2E+D%2E%22">Tomassini, F. D.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Nieboer%2C+E%2E%22">Nieboer, E.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Richardson%2C+D%2E+H%2E+S%2E%22">Richardson, D. H. S.</searchLink><relatesTo>2</relatesTo>
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  Data: <searchLink fieldCode="JN" term="%22New+Phytologist%22">New Phytologist</searchLink>. Jul77, Vol. 79 Issue 1, p135-145. 11p.
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  Data: <searchLink fieldCode="DE" term="%22Potassium%22">Potassium</searchLink><br /><searchLink fieldCode="DE" term="%22Lichens%22">Lichens</searchLink><br /><searchLink fieldCode="DE" term="%22Sulfur+dioxide%22">Sulfur dioxide</searchLink><br /><searchLink fieldCode="DE" term="%22Biological+membranes%22">Biological membranes</searchLink><br /><searchLink fieldCode="DE" term="%22Tissue+fixation+%28Histology%29%22">Tissue fixation (Histology)</searchLink><br /><searchLink fieldCode="DE" term="%22Photosynthesis%22">Photosynthesis</searchLink>
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  Label: Abstract
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  Data: Potassium efflux is a useful experimental quantity for assessing damage to lichens exposed to SO2. This SO2--induced K+ efflux is biphasic in response to increasing concentrations of aqueous SO2. The first phase can be extrapolated to identify the SO2 concentration at which no K+ release occurred above the control values. This threshold concentration was used to determine the relative sensitivities of various lichen species. Good agreement was observed between the total K+ lost and the reduction in the total photosynthetic 14C-fixation rates. The magnitude of the SO2--induced K+ efflux indicated that release occurred from intracellular sources. The kinetics of the release process and the effects of SO2 on membrane integrity are discussed. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
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  Data: <i>Copyright of New Phytologist is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1111/j.1469-8137.1977.tb02189.x
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      – Code: eng
        Text: English
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        PageCount: 11
        StartPage: 135
    Subjects:
      – SubjectFull: Potassium
        Type: general
      – SubjectFull: Lichens
        Type: general
      – SubjectFull: Sulfur dioxide
        Type: general
      – SubjectFull: Biological membranes
        Type: general
      – SubjectFull: Tissue fixation (Histology)
        Type: general
      – SubjectFull: Photosynthesis
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      – TitleFull: POTASSIUM EFFLUX BY LICHEN THALLI FOLLOWING EXPOSURE TO AQUEOUS SULPHUR DIOXIDE.
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              Text: Jul77
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              Y: 1977
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