The effects of elevated-co2 and uvr on photosynthetic performance and nitrate reductase activity of ulva flexuosa wulfen 1803
After the industrial revolution, increasing anthropogenic CO2 emission causes a number of changes in seawater. These changes are known as ocean acidification and affect the seaweeds in various ways. Therefore, this study is aimed to determine the ecological succession of Ulva flexuosa Wulfen 1803 in...
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2021
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ftbursauludaguni:oai:acikerisim.uludag.edu.tr:11452/41780 2024-06-23T07:55:50+00:00 The effects of elevated-co2 and uvr on photosynthetic performance and nitrate reductase activity of ulva flexuosa wulfen 1803 Yıldız, G. Bursa Uludağ Üniversitesi/Mühendislik Fakültesi/Gıda Mühendisliği Bölümü. Yıldız, G. YILDIZ, SAADET DİLEK 2021-04-01 https://hdl.handle.net/11452/41780 en eng Natl Inst Science Communication-niscair 113Y071 Indian Journal Of Geo-marine Sciences 0379-5136 https://hdl.handle.net/11452/41780 000658324200003 287 295 50 4 info:eu-repo/semantics/closedAccess Ocean acidification Physiological-responses Amino-acids Growth Co2 Chlorophyta Seaweed Lemaneiformis Assimilation Radiation Carbonic anhydrase Chlorophyll fluorescence Nitrate reductase Science & technology Physical sciences Oceanography Article 2021 ftbursauludaguni 2024-06-10T14:04:31Z After the industrial revolution, increasing anthropogenic CO2 emission causes a number of changes in seawater. These changes are known as ocean acidification and affect the seaweeds in various ways. Therefore, this study is aimed to determine the ecological succession of Ulva flexuosa Wulfen 1803 in future predicted CO2-induced low pH conditions alone and in combination with naturally relevant ultraviolet radiation (UVR). For this purpose, acidification experiments with and without UVR were conducted on U. flexuosa from the Mediterranean coast, and important physiological features of algae was investigated. In this study, the Fv/Fm ratios of U. flexuosa ranged from 0.718 +/- 0.01 to 0.754 +/- 0.009. While rETRmax values of samples exposed to elevated-CO2 were measured between 112.13 - 151.93 mu mol e(-)m(-2)s(-1), it was determined between 111.7 - 158.4 mu mol e(-)m(-2)s(-1) in samples exposed to ambient sea water. According to our results, increased CO2 concentration in seawater did not improve the photosynthetic efficiency of U. flexuosa. However, when the specimens were exposed to elevated-CO2, nitrate reductase activity of U. flexuosa was declined drastically. According to the results, it is suggested that the elevated CO2 may regulate the nitrogen preference of U. flexuosa. Besides, the data also show that U. flexuosa was not sensitive to UVR. Article in Journal/Newspaper Ocean acidification Açık Erişim@BUU (Bursa Uludağ Üniversitesi) |
institution |
Open Polar |
collection |
Açık Erişim@BUU (Bursa Uludağ Üniversitesi) |
op_collection_id |
ftbursauludaguni |
language |
English |
topic |
Ocean acidification Physiological-responses Amino-acids Growth Co2 Chlorophyta Seaweed Lemaneiformis Assimilation Radiation Carbonic anhydrase Chlorophyll fluorescence Nitrate reductase Science & technology Physical sciences Oceanography |
spellingShingle |
Ocean acidification Physiological-responses Amino-acids Growth Co2 Chlorophyta Seaweed Lemaneiformis Assimilation Radiation Carbonic anhydrase Chlorophyll fluorescence Nitrate reductase Science & technology Physical sciences Oceanography Yıldız, G. The effects of elevated-co2 and uvr on photosynthetic performance and nitrate reductase activity of ulva flexuosa wulfen 1803 |
topic_facet |
Ocean acidification Physiological-responses Amino-acids Growth Co2 Chlorophyta Seaweed Lemaneiformis Assimilation Radiation Carbonic anhydrase Chlorophyll fluorescence Nitrate reductase Science & technology Physical sciences Oceanography |
description |
After the industrial revolution, increasing anthropogenic CO2 emission causes a number of changes in seawater. These changes are known as ocean acidification and affect the seaweeds in various ways. Therefore, this study is aimed to determine the ecological succession of Ulva flexuosa Wulfen 1803 in future predicted CO2-induced low pH conditions alone and in combination with naturally relevant ultraviolet radiation (UVR). For this purpose, acidification experiments with and without UVR were conducted on U. flexuosa from the Mediterranean coast, and important physiological features of algae was investigated. In this study, the Fv/Fm ratios of U. flexuosa ranged from 0.718 +/- 0.01 to 0.754 +/- 0.009. While rETRmax values of samples exposed to elevated-CO2 were measured between 112.13 - 151.93 mu mol e(-)m(-2)s(-1), it was determined between 111.7 - 158.4 mu mol e(-)m(-2)s(-1) in samples exposed to ambient sea water. According to our results, increased CO2 concentration in seawater did not improve the photosynthetic efficiency of U. flexuosa. However, when the specimens were exposed to elevated-CO2, nitrate reductase activity of U. flexuosa was declined drastically. According to the results, it is suggested that the elevated CO2 may regulate the nitrogen preference of U. flexuosa. Besides, the data also show that U. flexuosa was not sensitive to UVR. |
author2 |
Bursa Uludağ Üniversitesi/Mühendislik Fakültesi/Gıda Mühendisliği Bölümü. Yıldız, G. YILDIZ, SAADET DİLEK |
format |
Article in Journal/Newspaper |
author |
Yıldız, G. |
author_facet |
Yıldız, G. |
author_sort |
Yıldız, G. |
title |
The effects of elevated-co2 and uvr on photosynthetic performance and nitrate reductase activity of ulva flexuosa wulfen 1803 |
title_short |
The effects of elevated-co2 and uvr on photosynthetic performance and nitrate reductase activity of ulva flexuosa wulfen 1803 |
title_full |
The effects of elevated-co2 and uvr on photosynthetic performance and nitrate reductase activity of ulva flexuosa wulfen 1803 |
title_fullStr |
The effects of elevated-co2 and uvr on photosynthetic performance and nitrate reductase activity of ulva flexuosa wulfen 1803 |
title_full_unstemmed |
The effects of elevated-co2 and uvr on photosynthetic performance and nitrate reductase activity of ulva flexuosa wulfen 1803 |
title_sort |
effects of elevated-co2 and uvr on photosynthetic performance and nitrate reductase activity of ulva flexuosa wulfen 1803 |
publisher |
Natl Inst Science Communication-niscair |
publishDate |
2021 |
url |
https://hdl.handle.net/11452/41780 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_relation |
113Y071 Indian Journal Of Geo-marine Sciences 0379-5136 https://hdl.handle.net/11452/41780 000658324200003 287 295 50 4 |
op_rights |
info:eu-repo/semantics/closedAccess |
_version_ |
1802648560380936192 |