Article citationsMore>>
Nakamura, Y., Sasaki, N., Kobayashi, M., Ojima, N., Yasuike, M., Shigenobu, Y., Satomi, M., Fukuma, Y., Shiwaku, K., Tsujimoto, A., Kobayashi, T., Nakayama, I., Ito, F., Nakajima, K., Sano, M., Wada, T., Kuhara, S., Inouye, K., Gojobori, T. and Ikeo, K. (2013) The First Symbiont-Free Genome Sequence of a Marine Red Alga, Susabi-Nori (Pyropia yezoensis). PLoS ONE, 8, e57122. http://dx.doi.org/10.1371/journal.pone.0057122
has been cited by the following article:
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TITLE:
Characterization of an Epiphytic Bacterium Neptunomonas sp. BPy-1 on the Gametophytes of a Red Alga Pyropia yezoensis
AUTHORS:
Midia Handayani, Hiroyuki Sasaki, Ryuya Matsuda, Katsuaki Takechi, Hiroyoshi Takano, Susumu Takio
KEYWORDS:
Neptunomonas, Pyropia yezoensis, Ethanol-Eating Bacteria, Epiphytic Bacteria
JOURNAL NAME:
American Journal of Plant Sciences,
Vol.5 No.24,
December
1,
2014
ABSTRACT:
The established culture of gametophytes of the red alga Pyropia yezoensis (TU-1) is superficially colonized by epiphytic bacteria. By 16S rRNA sequencing, 6 bacterial species were identified, and a culturable bacterium, Neptunomonas sp. BPy-1, was isolated. The 16S rRNA sequences of BPy-1 showed 100% identity with that of Neptunomonas sp. 0536, a probiotic bacterium found in greenshell mussels in New Zealand. Physiological tests revealed that 22 characters were identical between BPy-1 and 0536, but that 4 characters differed. BPy-1 cannot grow in the artificial seawater used for the culture of gametophytes. BPy-1 can grow in the artificial seawater with ethanol or butanol but not in methanol or propanol. To determine the effect of BPy-1 on gametophyte growth, BPy-1 colonization was reduced by 80% using a multi-enzyme cleaner. Changing the cleaner concentration yielded two types of gametophytes, a compressed or callus-like form and a nearly normal form. BPy-1 promoted the growth of the treated gametophytes with relatively normal form, while it showed less effect on compressed gametophytes. These findings suggested that BPy-1 promotes the growth of damaged gametophytes but does not affect the development of normal gametophytes.
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