Isolation of a differentially expressed gene in separate mating types of the dinoflagellate<b><i>Alexandrium tamarense</i></b>

Kobiyama, Atsushi; Ikeda, Yoshifumi; Koike, Kazuo; Ogata, Toru

doi:10.1080/09670260601092364

Cited by 6 publications

(4 citation statements)

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“…haploid reductions via meiosis. That the LECA was sexual is no longer a matter of speculation/ debate as evidence of sex, and of genes exclusively involved in meiosis, has been found in all of the major eukaryotic radiations (Brawley and Johnson 1992;Ramesh et al 2005;Kobiyama et al 2007;Malik et al 2008;Phadke and Zufall 2009;Fritz-Laylin et al 2010;Lahr et al 2011;Peacock et al 2011;Vanstechelman et al 2013).…”

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confidence: 99%

Origins of Eukaryotic Sexual Reproduction

Goodenough

Heitman

2014

Cold Spring Harbor Perspectives in Biology

176

134

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Sexual reproduction is a nearly universal feature of eukaryotic organisms. Given its ubiquity and shared core features, sex is thought to have arisen once in the last common ancestor to all eukaryotes. Using the perspectives of molecular genetics and cell biology, we consider documented and hypothetical scenarios for the instantiation and evolution of meiosis, fertilization, sex determination, uniparental inheritance of organelle genomes, and speciation.

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confidence: 99%

Origins of Eukaryotic Sexual Reproduction

Goodenough

Heitman

2014

Cold Spring Harbor Perspectives in Biology

176

134

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“…1993; Parker ; Kobiyama et al . 2007). While Kremp and Anderson (2004) reported that the cell wall of gametes contained specific lectin binding structures that assisted in gamete fusion and conjugation.…”

Section: Discussionmentioning

confidence: 99%

Sexual processes and life cycle transitions of the tropical Pacific Alexandrium minutum (Dinophyceae)

Liow

Lau

Law

et al. 2021

Phycological Research

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SUMMARY Resting cysts of harmful marine dinoflagellates, including Alexandrium species, play an important role in their bloom dynamics, where massive cyst germination is regarded as the natural phenomenon that initiates blooms. The life cycle of Alexandrium minutum from the temperate region has been intensively studied, however, related studies on its tropical counterparts are scarce. In this study, sexual reproduction of a toxigenic A. minutum (tropical Pacific ribotype) was investigated in a laboratory setting. Gamete expression was observed in both compatible cross‐mating and self‐crossed cultures, but sexual induction was observed only in the compatible cross‐mating cultures, confirming the heterothallic nature of the species. Resting cysts were successfully produced in 41 out of 91 pairwise combinations of cross‐mating strains. The crossing matrix results showed that the mating system of the tropical Pacific A. minutum was complex, with at least four distinct mating groups observed. The resting cysts had a relatively shorter dormancy period (5–8 days). The rapid encystment‐excystment processes and a short cyst dormancy period in this tropical Pacific A. minutum are believed to play crucial roles in governing the bloom and its dynamics in the tropical coastal region.

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“…strain SGCH-03 (Nomaru 2005) and A. tamarense strain OFAT0105-8 (Kobiyama et al 2006), were used in the present study. Symbiodinium sp.…”

Section: Cell Culturementioning

confidence: 99%

The D1 and D2 proteins of dinoflagellates: unusually accumulated mutations which influence on PSII photoreaction

et al. 2008

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Plastid encoded genes of the dinoflagellates are rapidly evolving and most divergent. The importance of unusually accumulated mutations on structure of PSII core protein and photosynthetic function was examined in the dinoflagellates, Symbiodinium sp. and Alexandrium tamarense. Full-length cDNA sequences of psbA (D1 protein) and psbD (D2 protein) were obtained and compared with the other oxygen-evolving photoautotrophs. Twenty-three amino acid positions (7%) for the D1 protein and 34 positions (10%) for the D2 were mutated in the dinoflagellates, although amino acid residues at these positions were conserved in cyanobacteria, the other algae, and plant. Many mutations were likely to distribute in the N-terminus and the D-E interhelical loop of the D1 protein and helix B of D2 protein, while the remaining regions were well conserved. The different structural properties in these mutated regions were supported by hydropathy profiles. The chlorophyll fluorescence kinetics of the dinoflagellates was compared with Synechocystis sp. PCC6803 in relation to the altered protein structure.

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Isolation of a differentially expressed gene in separate mating types of the dinoflagellateAlexandrium tamarense

Cited by 6 publications

References 35 publications

Origins of Eukaryotic Sexual Reproduction

Origins of Eukaryotic Sexual Reproduction

Sexual processes and life cycle transitions of the tropical Pacific Alexandrium minutum (Dinophyceae)

The D1 and D2 proteins of dinoflagellates: unusually accumulated mutations which influence on PSII photoreaction

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