Multiple Plastids Collected by the Dinoflagellate Dinophysis mitra through Kleptoplastidy

Nishitani, Goh; Nagai, Satoshi; Hayakawa, Shiho; Kosaka, Yuki; Sakurada, Kiyonari; Kamiyama, Takashi; Gojobori, Takashi

doi:10.1128/aem.06544-11

Cited by 58 publications

(35 citation statements)

References 56 publications

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“…Target region is nuclear 18S rDNA. All primers refer to Nishitani et al (2012) Holotype Length 14.5 mm, 0.7 mm wide at chaetiger 5, with 86 chaetigers. Color light tan without conspicuous pigmentation.…”

Section: Diagnosismentioning

confidence: 99%

Morphology, 18S rRNA gene sequence and life history of a new Polydora species (Polychaeta: Spionidae) from northeastern Japan

Teramoto¹,

Sato-Okoshi²,

Abe³

et al. 2013

Aquat. Biol.

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A new species of spionid polychaete, Polydora onagawaensis, is described from mollusk shells in Pacific waters of northeastern Japan. Its nuclear 18S rRNA gene sequence as well as its morphology, reproductive features, life history and infestation characteristics are reported. Polydora onagawaensis sp. nov. belongs to the Polydora ciliata/websteri group and has a moderate size and variable black pigmentation on the palps and body. Up to 115 worms were found boring in a single scallop shell from suspended cultures in Onagawa Bay, with significantly higher numbers in the right than in the left valve. Females repeatedly deposited a string of egg capsules from around October to June (seawater temperature was below 15°C). The larvae developed inside the egg capsules for 2 wk (10°C, laboratory conditions), until the 3-chaetiger stage, before being released as planktonic larvae. The main spawning occurred in December, recruitment onto the shells increased after January, and most large worms disappeared between July and October. Thus, the estimated life span is around 1.5 yr after settlement. Details on biology and gene information not only contribute to distinguishing the species from other polydorids similar in morphology, but also allow control of polydorid infestation in mollusk aquaculture.

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Section: Diagnosismentioning

confidence: 99%

Morphology, 18S rRNA gene sequence and life history of a new Polydora species (Polychaeta: Spionidae) from northeastern Japan

Teramoto¹,

Sato-Okoshi²,

Abe³

et al. 2013

Aquat. Biol.

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“…Dinoflagellates have been shown to possess tertiary plastids of haptophyte (39-41) and diatom (42,43) origins in the so-called Kareniaceae and "dinotom" groups, respectively. The genus Dinophysis also possesses tertiary endosymbionts, which are derived from cryptophytes, but it is uncertain whether the host cells permanently maintain them or they represent only transient association (44,45).…”

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confidence: 99%

Endosymbiotic Gene Transfer in Tertiary Plastid-Containing Dinoflagellates

et al. 2014

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Plastid establishment involves the transfer of endosymbiotic genes to the host nucleus, a process known as endosymbiotic gene transfer (EGT). Large amounts of EGT have been shown in several photosynthetic lineages but also in present-day plastid-lacking organisms, supporting the notion that endosymbiotic genes leave a substantial genetic footprint in the host nucleus. Yet the extent of this genetic relocation remains debated, largely because the long period that has passed since most plastids originated has erased many of the clues to how this process unfolded. Among the dinoflagellates, however, the ancestral peridinin-containing plastid has been replaced by tertiary plastids on several more recent occasions, giving us a less ancient window to examine plastid origins. In this study, we evaluated the endosymbiotic contribution to the host genome in two dinoflagellate lineages with tertiary plastids. We generated the first nuclear transcriptome data sets for the "dinotoms," which harbor diatom-derived plastids, and analyzed these data in combination with the available transcriptomes for kareniaceans, which harbor haptophyte-derived plastids. We found low level of detectable EGT in both dinoflagellate lineages, with only 9 genes and 90 genes of possible tertiary endosymbiotic origin in dinotoms and kareniaceans, respectively, suggesting that tertiary endosymbioses did not heavily impact the host dinoflagellate genomes.

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“…2 DNA polymerase (Toyobo, Osaka, Japan; with intensive 3'→5' exonuclease activity), and 0.2 µM of each primer. For amplifying the nuclear 18S rRNA gene of the Ephelota plana, three primer pairs (18S-1F1/18S-1R632, 18S-2F576/18S-2R1209, and 18S-3F1129/18S-R1772) were used (Nishitani et al 2012). The PCR products were sequenced directly with an automated DNA sequencer (ABI 3100; Applied Biosystems).…”

Section: Dna Extraction and Analysismentioning

confidence: 99%

Life cycle of the suctorian ciliate Ephelota plana attached to the krill Euphausia pacifica

Endo

Fujii

Nishitani

et al. 2017

Journal of Experimental Marine Biology and Ecology

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The hypothesis that life cycle of an epibiotic suctorian ciliate Ephelota plana is adapted to the molt cycle of the krill Euphausia pacifica collected in Saanich Inlet, Canada was evaluated. The infestation prevalence of E. plana and the number of individuals attached increased from postmolt stage to premolt stage of E. pacifica, and concurrently cell growth of E. plana was observed. Budding individuals of E. plana first appeared at early premolt stage and increased to 21% at late premolt stage.Thus the life cycle of E. plana seems to be adapted to the molt cycle of E. pacifica.

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Multiple Plastids Collected by the Dinoflagellate Dinophysis mitra through Kleptoplastidy

Cited by 58 publications

References 56 publications

Morphology, 18S rRNA gene sequence and life history of a new Polydora species (Polychaeta: Spionidae) from northeastern Japan

Morphology, 18S rRNA gene sequence and life history of a new Polydora species (Polychaeta: Spionidae) from northeastern Japan

Endosymbiotic Gene Transfer in Tertiary Plastid-Containing Dinoflagellates

Life cycle of the suctorian ciliate Ephelota plana attached to the krill Euphausia pacifica

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