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Effects of Atmospheric O3 on Azolla-Anabaena Symbiosis.

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Effects of Atmospheric O3 on Azolla-Anabaena Symbiosis. / Hur, Jae-Seoun; Wellburn, Alan R.
In: Annals of Botany, Vol. 73, No. 2, 1994, p. 205-209.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Harvard

Hur, J-S & Wellburn, AR 1994, 'Effects of Atmospheric O3 on Azolla-Anabaena Symbiosis.', Annals of Botany, vol. 73, no. 2, pp. 205-209. https://doi.org/10.1006/anbo.1994.1024

APA

Hur, J-S., & Wellburn, A. R. (1994). Effects of Atmospheric O3 on Azolla-Anabaena Symbiosis. Annals of Botany, 73(2), 205-209. https://doi.org/10.1006/anbo.1994.1024

Vancouver

Hur J-S, Wellburn AR. Effects of Atmospheric O3 on Azolla-Anabaena Symbiosis. Annals of Botany. 1994;73(2):205-209. doi: 10.1006/anbo.1994.1024

Author

Hur, Jae-Seoun ; Wellburn, Alan R. / Effects of Atmospheric O3 on Azolla-Anabaena Symbiosis. In: Annals of Botany. 1994 ; Vol. 73, No. 2. pp. 205-209.

Bibtex

@article{44ddabf0499349acb6f885b6efac79fb,
title = "Effects of Atmospheric O3 on Azolla-Anabaena Symbiosis.",
abstract = "Cultures of water fern Azolla pinnata R. Br. exposed for 1 week to either 30, 50 or 80 nl l-1 O3 showed significant reductions in rates of growth and N2 fixation, and had fewer heterocysts. Although the levels of glutamine synthetase (GS) and glutamate dehydrogenase (GDH) activity were decreased by low concentrations of O3 exposures (30 or 50 nl l-1), significant increases in levels of the same enzymes were caused by higher concentrations of O3 (80 nl l-1). Increased levels of total protein, polyamines (putrescine and spermidine), and the xanthophyll-cycle precursor of abscisic acid (ABA), violaxanthin, were also found with higher levels of O3 (80 nl l-1). Levels of ABA itself were significantly increased by low level O3 fumigation (30 nl l-1) but significantly decreased by exposure to 80 nl l-1 O3. This may indicate that higher levels of atmospheric O3 inhibit the final stages of ABA biosynthesis from violaxanthin.",
keywords = "Abscisic acid, nitrogen assimilation, nitrogen fixation, ozone pollution, polyamines, violaxanthin",
author = "Jae-Seoun Hur and Wellburn, {Alan R.}",
note = "The definitive publisher-authenticated version Cooper, Rachel Why Hacking is Wrong about Human Kinds British Journal for the Philosophy of Science 2004 55: 73-85 is available online at: http://bjps.oxfordjournals.org/cgi/content/abstract/55/1/73",
year = "1994",
doi = "10.1006/anbo.1994.1024",
language = "English",
volume = "73",
pages = "205--209",
journal = "Annals of Botany",
issn = "1095-8290",
publisher = "OXFORD UNIV PRESS",
number = "2",

}

RIS

TY - JOUR

T1 - Effects of Atmospheric O3 on Azolla-Anabaena Symbiosis.

AU - Hur, Jae-Seoun

AU - Wellburn, Alan R.

N1 - The definitive publisher-authenticated version Cooper, Rachel Why Hacking is Wrong about Human Kinds British Journal for the Philosophy of Science 2004 55: 73-85 is available online at: http://bjps.oxfordjournals.org/cgi/content/abstract/55/1/73

PY - 1994

Y1 - 1994

N2 - Cultures of water fern Azolla pinnata R. Br. exposed for 1 week to either 30, 50 or 80 nl l-1 O3 showed significant reductions in rates of growth and N2 fixation, and had fewer heterocysts. Although the levels of glutamine synthetase (GS) and glutamate dehydrogenase (GDH) activity were decreased by low concentrations of O3 exposures (30 or 50 nl l-1), significant increases in levels of the same enzymes were caused by higher concentrations of O3 (80 nl l-1). Increased levels of total protein, polyamines (putrescine and spermidine), and the xanthophyll-cycle precursor of abscisic acid (ABA), violaxanthin, were also found with higher levels of O3 (80 nl l-1). Levels of ABA itself were significantly increased by low level O3 fumigation (30 nl l-1) but significantly decreased by exposure to 80 nl l-1 O3. This may indicate that higher levels of atmospheric O3 inhibit the final stages of ABA biosynthesis from violaxanthin.

AB - Cultures of water fern Azolla pinnata R. Br. exposed for 1 week to either 30, 50 or 80 nl l-1 O3 showed significant reductions in rates of growth and N2 fixation, and had fewer heterocysts. Although the levels of glutamine synthetase (GS) and glutamate dehydrogenase (GDH) activity were decreased by low concentrations of O3 exposures (30 or 50 nl l-1), significant increases in levels of the same enzymes were caused by higher concentrations of O3 (80 nl l-1). Increased levels of total protein, polyamines (putrescine and spermidine), and the xanthophyll-cycle precursor of abscisic acid (ABA), violaxanthin, were also found with higher levels of O3 (80 nl l-1). Levels of ABA itself were significantly increased by low level O3 fumigation (30 nl l-1) but significantly decreased by exposure to 80 nl l-1 O3. This may indicate that higher levels of atmospheric O3 inhibit the final stages of ABA biosynthesis from violaxanthin.

KW - Abscisic acid

KW - nitrogen assimilation

KW - nitrogen fixation

KW - ozone pollution

KW - polyamines

KW - violaxanthin

U2 - 10.1006/anbo.1994.1024

DO - 10.1006/anbo.1994.1024

M3 - Journal article

VL - 73

SP - 205

EP - 209

JO - Annals of Botany

JF - Annals of Botany

SN - 1095-8290

IS - 2

ER -