Morphology, ultrastructure and phylogeny of <i>Cyanothece</i> sp. (Cyanobacteriaceae: Cyanophyceae) isolated from the eastern Indian Ocean

ZHANG Xiaodong; YANG Shuang; SUN Jun; WU Chao; WANG Jing; ZHANG Guicheng; DING Changling

doi:10.1007/s13131-018-1297-y

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Article Navigation > Acta Oceanologica Sinica > 2018 > 37(10): 4-10

ZHANG Xiaodong, YANG Shuang, SUN Jun, WU Chao, WANG Jing, ZHANG Guicheng, DING Changling. Morphology, ultrastructure and phylogeny of Cyanothece sp. (Cyanobacteriaceae: Cyanophyceae) isolated from the eastern Indian Ocean[J]. Acta Oceanologica Sinica, 2018, 37(10): 4-10. doi: 10.1007/s13131-018-1297-y

Citation:

ZHANG Xiaodong, YANG Shuang, SUN Jun, WU Chao, WANG Jing, ZHANG Guicheng, DING Changling. Morphology, ultrastructure and phylogeny of Cyanothece sp. (Cyanobacteriaceae: Cyanophyceae) isolated from the eastern Indian Ocean[J]. Acta Oceanologica Sinica, 2018, 37(10): 4-10. doi: 10.1007/s13131-018-1297-y

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Morphology, ultrastructure and phylogeny of Cyanothece sp. (Cyanobacteriaceae: Cyanophyceae) isolated from the eastern Indian Ocean

doi: 10.1007/s13131-018-1297-y

1.
Tianjin Key Laboratory of Marine Resources and Chemistry, Tianjin University of Science and Technology, Tianjin 300457, China;Research Centre for Indian Ocean Ecosystem, Tianjin University of Science and Technology, Tianjin 300457, China
2.
Institute of Marine Science and Technology, Shandong University, Jinan 250110, China

Received Date: 2017-09-19

Abstract

Abstract

One strain of unicellular greenish algae embedded by mucilage was successfully isolated from equatorial area in the Indian Ocean. Microscopic observation, ultrastructure features and genetic identification confirmed that the strain was closely related to Cyanothece sp., which was a cyanobacteria species with great ecological significance. Cells were solitary with oval or bacilliform shapes. Diameters of this strain were relatively small, ranging from 2.5 to 6.5 μm on average. Ultrastructure of cells was simple. Thylakoids were arranged parietal and keritomized content were observed in the thylakoid region. Various electron-transparent granules with low electron-dense region as well as cyanophycin or glycogen granules-like organelle and carbonxysomes were also observed. For pigment composition, the dominant pigments were chlorophyll a, β-Carotene, Zeaxanthin and an unknown pigment, contributing 23.8%, 26.1%, 14.7% and 15.7% to total pigments respectively. The phylogenetic analysis of 16S rRNA gene and nifH gene confirmed that Strain EIO409 was closely related with Cyanothece sp..
- Cyanothece,
- cyanobacteria,
- morphology,
- 16S rRNA gene,
- nifH gene,
- Indian Ocean

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References(37)

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