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Title: Identification of species and genotypic compositions of Cryptomonas (Cryptophyceae) populations in the eutrophic Lake Hira, Japan, using single-cell PCR
Authors: Nishino, Hiroshi
Hodoki, Yoshikuni  kyouindb  KAKEN_id
Thottathil, Shoji Devasia
Ohbayashi, Kako
Takao, Yoshitake
Nakano, Shin-ichi  kyouindb  KAKEN_id
Author's alias: 中野, 伸一
Keywords: Cryptomonas
Nuclear internal transcribed spacer 2 (ITS2)
Single-cell PCR
Genotypic composition
Issue Date: 9-May-2015
Publisher: Springer Netherlands
Journal title: Aquatic Ecology
Volume: 49
Issue: 3
Start page: 263
End page: 272
Abstract: Single-cell PCR and gene sequencing were conducted to evaluate species and genotypic compositions of Cryptomonas in the eutrophic Lake Hira, Japan. We determined the sequences of nuclear internal transcribed spacer 2 region from single Cryptomonas cells with a high success rate (83.3–97.9 %), excluding one case (56.3 %). A total of 325 sequences were obtained over eight sampling days from May 28, 2012, to October 3, 2012, and phylogenetic analysis indicated that all sequences were divided into six groups. Four groups were clustered together with known sequences of C. curvata, C. marssonii, C. pyrenoidifera or C. tetrapyrenoidosa, although the sequences of the other two groups did not show high similarity to known Cryptomonas species. Cryptomonas curvata dominated during the study period (45–98 %), and unidentified Cryptomonas species (group 2) became dominant at high water temperatures. The genotypic composition of C. curvata also varied temporarily, suggesting that the genotypic composition of Cryptomonas was susceptible to environmental changes. These results indicated that single-cell PCR can be used to analyze the species composition and ecology of Cryptomonas.
Rights: The final publication is available at Springer via http://dx.doi.org/10.1007/s10452-015-9520-9.
The full-text file will be made open to the public on 09 May 2016 in accordance with publisher's 'Terms and Conditions for Self-Archiving'.
This is not the published version. Please cite only the published version. この論文は出版社版でありません。引用の際には出版社版をご確認ご利用ください。
URI: http://hdl.handle.net/2433/201850
DOI(Published Version): 10.1007/s10452-015-9520-9
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