Uptake and Photosynthetic Inhibition by Atrazine and its Degradation Products on Four Species of Submerged Vascular Plants
Abstract The photosynthetic inhibitory effect of atrazine (2‐chloro‐4‐ethylamino‐6‐isopropyl amino‐1,3,5‐triazine) and three of its major metabolites (deethylated, deisopropylated, and hydroxyatrazine) were determined for four species of submerged macrophytes: Potamogeton perfoliatus L., Ruppia mari...
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crwiley:10.2134/jeq1984.00472425001300020014x 2024-04-28T08:41:25+00:00 Uptake and Photosynthetic Inhibition by Atrazine and its Degradation Products on Four Species of Submerged Vascular Plants Jones, T. W. Winchell, L. 1984 http://dx.doi.org/10.2134/jeq1984.00472425001300020014x https://onlinelibrary.wiley.com/doi/pdf/10.2134/jeq1984.00472425001300020014x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Environmental Quality volume 13, issue 2, page 243-247 ISSN 0047-2425 1537-2537 Management, Monitoring, Policy and Law Pollution Waste Management and Disposal Water Science and Technology Environmental Engineering journal-article 1984 crwiley https://doi.org/10.2134/jeq1984.00472425001300020014x 2024-04-02T08:41:40Z Abstract The photosynthetic inhibitory effect of atrazine (2‐chloro‐4‐ethylamino‐6‐isopropyl amino‐1,3,5‐triazine) and three of its major metabolites (deethylated, deisopropylated, and hydroxyatrazine) were determined for four species of submerged macrophytes: Potamogeton perfoliatus L., Ruppia maritima L., Myriophyllum spicatum L., and Zannichellia palustris L. The four species showed a similar response to varied dosages of the parent atrazine compound with an average I 1 (concentration at which photosynthesis is inhibited by 1%) for the four species of 20 µ g/L and an average I 50 (concentration at which photosynthesis is inhibited by 50%) for the four species of 95 µ g/L. The three major degradation metabolites of atrazine produced varying degrees of photosynthetic inhibition in the four species, but generally the order of toxicity was deethylated > deisopropylated > hydroxyatrazine with hydroxyatrazine causing an apparent stimulation of photosynthesis in several species. Of four species tested, Myriophyllum spicatum L. was the most resistant to atrazine and its metabolites. The magnitude of the actual uptake of the compounds [ µ g compound/grams dry wt (gdw) plant] by the plants correlated closely with the photosynthetic inhibitory response, i.e., at the same concentration the uptake of atrazine > deethylated > deisopropylated > hydroxyatrazine. Considering that an extremely high environmental concentration (0.5 mg/L) of deethylated atrazine for an estuary only produced a photosynthetic inhibition of from 20 to 40% in four major species of submerged macrophytes, it is concluded that the degradation products of atrazine tested did not play a major role in the disappearance of the submerged vascular plants from the Chesapeake Bay. Article in Journal/Newspaper Zannichellia palustris Wiley Online Library Journal of Environmental Quality 13 2 243 247 |
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Wiley Online Library |
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English |
topic |
Management, Monitoring, Policy and Law Pollution Waste Management and Disposal Water Science and Technology Environmental Engineering |
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Management, Monitoring, Policy and Law Pollution Waste Management and Disposal Water Science and Technology Environmental Engineering Jones, T. W. Winchell, L. Uptake and Photosynthetic Inhibition by Atrazine and its Degradation Products on Four Species of Submerged Vascular Plants |
topic_facet |
Management, Monitoring, Policy and Law Pollution Waste Management and Disposal Water Science and Technology Environmental Engineering |
description |
Abstract The photosynthetic inhibitory effect of atrazine (2‐chloro‐4‐ethylamino‐6‐isopropyl amino‐1,3,5‐triazine) and three of its major metabolites (deethylated, deisopropylated, and hydroxyatrazine) were determined for four species of submerged macrophytes: Potamogeton perfoliatus L., Ruppia maritima L., Myriophyllum spicatum L., and Zannichellia palustris L. The four species showed a similar response to varied dosages of the parent atrazine compound with an average I 1 (concentration at which photosynthesis is inhibited by 1%) for the four species of 20 µ g/L and an average I 50 (concentration at which photosynthesis is inhibited by 50%) for the four species of 95 µ g/L. The three major degradation metabolites of atrazine produced varying degrees of photosynthetic inhibition in the four species, but generally the order of toxicity was deethylated > deisopropylated > hydroxyatrazine with hydroxyatrazine causing an apparent stimulation of photosynthesis in several species. Of four species tested, Myriophyllum spicatum L. was the most resistant to atrazine and its metabolites. The magnitude of the actual uptake of the compounds [ µ g compound/grams dry wt (gdw) plant] by the plants correlated closely with the photosynthetic inhibitory response, i.e., at the same concentration the uptake of atrazine > deethylated > deisopropylated > hydroxyatrazine. Considering that an extremely high environmental concentration (0.5 mg/L) of deethylated atrazine for an estuary only produced a photosynthetic inhibition of from 20 to 40% in four major species of submerged macrophytes, it is concluded that the degradation products of atrazine tested did not play a major role in the disappearance of the submerged vascular plants from the Chesapeake Bay. |
format |
Article in Journal/Newspaper |
author |
Jones, T. W. Winchell, L. |
author_facet |
Jones, T. W. Winchell, L. |
author_sort |
Jones, T. W. |
title |
Uptake and Photosynthetic Inhibition by Atrazine and its Degradation Products on Four Species of Submerged Vascular Plants |
title_short |
Uptake and Photosynthetic Inhibition by Atrazine and its Degradation Products on Four Species of Submerged Vascular Plants |
title_full |
Uptake and Photosynthetic Inhibition by Atrazine and its Degradation Products on Four Species of Submerged Vascular Plants |
title_fullStr |
Uptake and Photosynthetic Inhibition by Atrazine and its Degradation Products on Four Species of Submerged Vascular Plants |
title_full_unstemmed |
Uptake and Photosynthetic Inhibition by Atrazine and its Degradation Products on Four Species of Submerged Vascular Plants |
title_sort |
uptake and photosynthetic inhibition by atrazine and its degradation products on four species of submerged vascular plants |
publisher |
Wiley |
publishDate |
1984 |
url |
http://dx.doi.org/10.2134/jeq1984.00472425001300020014x https://onlinelibrary.wiley.com/doi/pdf/10.2134/jeq1984.00472425001300020014x |
genre |
Zannichellia palustris |
genre_facet |
Zannichellia palustris |
op_source |
Journal of Environmental Quality volume 13, issue 2, page 243-247 ISSN 0047-2425 1537-2537 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.2134/jeq1984.00472425001300020014x |
container_title |
Journal of Environmental Quality |
container_volume |
13 |
container_issue |
2 |
container_start_page |
243 |
op_container_end_page |
247 |
_version_ |
1797571668220051456 |