Photosystem II Photochemistry and Phycobiliprotein of the Red Algae Kappaphycus alvarezii and Their Implications for Light Adaptation
Photosystem II photochemistry and phycobiliprotein (PBP) genes of red algae Kappaphycus alvarezii, raw material of κ-carrageenan used in food and pharmaceutical industries, were analyzed in this study. Minimum saturating irradiance (Ik) of this algal species was less than 115 μmol m−2 s−1. Its actua...
Main Authors: | , , , , , , |
---|---|
Format: | Article |
Language: | English |
Published: |
Hindawi Limited
2013-01-01
|
Series: | BioMed Research International |
Online Access: | http://dx.doi.org/10.1155/2013/256549 |
id |
doaj-57d225582c8d45bf881f2b3d8e75920b |
---|---|
record_format |
Article |
spelling |
doaj-57d225582c8d45bf881f2b3d8e75920b2020-11-25T01:06:02ZengHindawi LimitedBioMed Research International2314-61332314-61412013-01-01201310.1155/2013/256549256549Photosystem II Photochemistry and Phycobiliprotein of the Red Algae Kappaphycus alvarezii and Their Implications for Light AdaptationXiangyu Guan0Jinfeng Wang1Jianyi Zhu2Chunyan Yao3Jianguo Liu4Song Qin5Peng Jiang6School of Ocean Sciences, China University of Geosciences, Beijing 100083, ChinaKey Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, ChinaDepartment of Biology, Changshu Institute of Technology, Changshu 215500, ChinaDepartment of Biology, Changshu Institute of Technology, Changshu 215500, ChinaKey Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, ChinaYantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, ChinaKey Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, ChinaPhotosystem II photochemistry and phycobiliprotein (PBP) genes of red algae Kappaphycus alvarezii, raw material of κ-carrageenan used in food and pharmaceutical industries, were analyzed in this study. Minimum saturating irradiance (Ik) of this algal species was less than 115 μmol m−2 s−1. Its actual PSII efficiency (yield II) increased when light intensity enhanced and decreased when light intensity reached 200 μmol m−2 s−1. Under dim light, yield II declined at first and then increased on the fourth day. Under high light, yield II retained a stable value. These results indicate that K. alvarezii is a low-light-adapted species but possesses regulative mechanisms in response to both excessive and deficient light. Based on the PBP gene sequences, K. alvarezii, together with other red algae, assembled faster and showed a closer relationship with LL-Prochlorococcus compared to HL-Prochlorococcus. Many amino acid loci in PBP sequences of K. alvarezii were conserved with those of LL-Prochlorococcus. However, loci conserved with HL-Prochlorococcus but divergent with LL-Prochlorococcus were also found. The diversities of PE and PC are proposed to have played some roles during the algal evolution and divergence of light adaption.http://dx.doi.org/10.1155/2013/256549 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Xiangyu Guan Jinfeng Wang Jianyi Zhu Chunyan Yao Jianguo Liu Song Qin Peng Jiang |
spellingShingle |
Xiangyu Guan Jinfeng Wang Jianyi Zhu Chunyan Yao Jianguo Liu Song Qin Peng Jiang Photosystem II Photochemistry and Phycobiliprotein of the Red Algae Kappaphycus alvarezii and Their Implications for Light Adaptation BioMed Research International |
author_facet |
Xiangyu Guan Jinfeng Wang Jianyi Zhu Chunyan Yao Jianguo Liu Song Qin Peng Jiang |
author_sort |
Xiangyu Guan |
title |
Photosystem II Photochemistry and Phycobiliprotein of the Red Algae Kappaphycus alvarezii and Their Implications for Light Adaptation |
title_short |
Photosystem II Photochemistry and Phycobiliprotein of the Red Algae Kappaphycus alvarezii and Their Implications for Light Adaptation |
title_full |
Photosystem II Photochemistry and Phycobiliprotein of the Red Algae Kappaphycus alvarezii and Their Implications for Light Adaptation |
title_fullStr |
Photosystem II Photochemistry and Phycobiliprotein of the Red Algae Kappaphycus alvarezii and Their Implications for Light Adaptation |
title_full_unstemmed |
Photosystem II Photochemistry and Phycobiliprotein of the Red Algae Kappaphycus alvarezii and Their Implications for Light Adaptation |
title_sort |
photosystem ii photochemistry and phycobiliprotein of the red algae kappaphycus alvarezii and their implications for light adaptation |
publisher |
Hindawi Limited |
series |
BioMed Research International |
issn |
2314-6133 2314-6141 |
publishDate |
2013-01-01 |
description |
Photosystem II photochemistry and phycobiliprotein (PBP) genes of red algae Kappaphycus alvarezii, raw material of κ-carrageenan used in food and pharmaceutical industries, were analyzed in this study. Minimum saturating irradiance (Ik) of this algal species was less than 115 μmol m−2 s−1. Its actual PSII efficiency (yield II) increased when light intensity enhanced and decreased when light intensity reached 200 μmol m−2 s−1. Under dim light, yield II declined at first and then increased on the fourth day. Under high light, yield II retained a stable value. These results indicate that K. alvarezii is a low-light-adapted species but possesses regulative mechanisms in response to both excessive and deficient light. Based on the PBP gene sequences, K. alvarezii, together with other red algae, assembled faster and showed a closer relationship with LL-Prochlorococcus compared to HL-Prochlorococcus. Many amino acid loci in PBP sequences of K. alvarezii were conserved with those of LL-Prochlorococcus. However, loci conserved with HL-Prochlorococcus but divergent with LL-Prochlorococcus were also found. The diversities of PE and PC are proposed to have played some roles during the algal evolution and divergence of light adaption. |
url |
http://dx.doi.org/10.1155/2013/256549 |
work_keys_str_mv |
AT xiangyuguan photosystemiiphotochemistryandphycobiliproteinoftheredalgaekappaphycusalvareziiandtheirimplicationsforlightadaptation AT jinfengwang photosystemiiphotochemistryandphycobiliproteinoftheredalgaekappaphycusalvareziiandtheirimplicationsforlightadaptation AT jianyizhu photosystemiiphotochemistryandphycobiliproteinoftheredalgaekappaphycusalvareziiandtheirimplicationsforlightadaptation AT chunyanyao photosystemiiphotochemistryandphycobiliproteinoftheredalgaekappaphycusalvareziiandtheirimplicationsforlightadaptation AT jianguoliu photosystemiiphotochemistryandphycobiliproteinoftheredalgaekappaphycusalvareziiandtheirimplicationsforlightadaptation AT songqin photosystemiiphotochemistryandphycobiliproteinoftheredalgaekappaphycusalvareziiandtheirimplicationsforlightadaptation AT pengjiang photosystemiiphotochemistryandphycobiliproteinoftheredalgaekappaphycusalvareziiandtheirimplicationsforlightadaptation |
_version_ |
1725191931030405120 |