Culture observation and molecular phylogenetic analysis on the blooming green alga Chaetomorpha valida (Cladophorales, Chlorophyta) from China

Yunyan Deng; Xiaorong Tang; Zifeng Zhan; Linhong Teng; Lanping Ding; Bingxin Huang

doi:10.1007/s00343-013-2216-x

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Culture observation and molecular phylogenetic analysis on the blooming green alga Chaetomorpha valida (Cladophorales, Chlorophyta) from China

Updated：2023-05-16

- Culture observation and molecular phylogenetic analysis on the blooming green alga Chaetomorpha valida (Cladophorales, Chlorophyta) from China
- Journal of Oceanology and Limnology Vol. 31, Issue 3, Pages: 552-559(2013)
- Affiliations：
  
  1. Institute of Oceanology Chinese Academy of Sciences
  2. Graduate University of Chinese Academy of Sciences
  3. Key Laboratory of Marine Genetics and Breeding (Ocean University of China) Ministry of Education
  4. Shantou University
- Author bio：
- Funds：
- DOI：10.1007/s00343-013-2216-x
  CLC：
- Online First：08 May 2013，
  
  Published：2013
- Accepted：
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Deng, Y., Tang, X., Zhan, Z. et al. Culture observation and molecular phylogenetic analysis on the blooming green alga Chaetomorpha valida (Cladophorales, Chlorophyta) from China., Chin. J. Ocean. Limnol. 31, 552–559 (2013). https://doi.org/10.1007/s00343-013-2216-x
DOI：

Deng, Y., Tang, X., Zhan, Z. et al. Culture observation and molecular phylogenetic analysis on the blooming green alga Chaetomorpha valida (Cladophorales, Chlorophyta) from China., Chin. J. Ocean. Limnol. 31, 552–559 (2013). https://doi.org/10.1007/s00343-013-2216-x DOI：

摘要

Abstract

The marine green alga Chaetomorpha valida fouls aquaculture ponds along the coastal cities of Dalian and Rongcheng

China. Unialgal cultures were observed under a microscope to determine the developmental morphological characters of C. valida. Results reveal that gametophytic filaments often produce lateral branches under laboratory culture conditions

suggesting an atypical heteromorphic life cycle of C. valida between unbranched sporophytes and branched gametophytes

which differs from typical isomorphic alternation of Chaetomorpha species. The shape of the basal attachment cell

an important taxonomic character within the genus

was found variable depending on environmental conditions. The 18S rDNA and 28S rDNA regions were used to explore the phylogenetic affinity of the taxa. Inferred trees from 18S rDNA sequences revealed a close relationship between C. valida and Chaetomorpha moniligera. These results would enrich information in general biology and morphological plasticity of C. valida and provided a basis for future identification of green tide forming algae.

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references

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