Biology:Pleodorina starrii
| Pleodorina starrii | |
|---|---|
| |
Scientific classification 
| |
| (unranked): | Viridiplantae |
| Division: | Chlorophyta |
| Class: | Chlorophyceae |
| Order: | Chlamydomonadales |
| Family: | Volvocaceae |
| Genus: | Pleodorina |
| Species: | P. starrii
|
| Binomial name | |
| Pleodorina starrii H.Nozaki, F.D.Ott & A.W.Coleman, 2006
| |
Pleodorina starrii is a species of algae that resides in freshwater in Japan .[1]
Reproduction
It is trioecious meaning males, females, and hermaphrodites exist in the species.[2]
Reproduction is asexual under normal conditions and creates colonies of clones with the same genotype.[3][4] Sexual reproduction is induced by low-nitrogen conditions and is anisogamous.[1]
Studies on the species
The species was involved in a 2006 study that provided the first molecular genetic evidence for the evolutionary link between sexes and mating types.[5][6](pp215–216, 222) A male-specific gene was founded in the species and named "Otokogi", meaning manliness or chivalry in Japanese.[6](p221)
The species was previously believed to be heterothallic with males and females, but a 2021 study revealed it also contained hermaphrodites.[7] This study was the first time the sexual system trioecy has been reported in haploid species and it challenged models for the evolution of sexual systems.[2]
References
- ↑ 1.0 1.1 "Pleodorina starrii H.Nozaki, F.D.Ott & A.W.Coleman :: AlgaeBase". https://www.algaebase.org/search/species/detail/?species_id=Rc20f1b6893c45e13.
- ↑ 2.0 2.1 Roy, Scott William (November 2021). "Digest: Three sexes from two loci in one genome: A haploid alga expands the diversity of trioecious species*" (in en). Evolution 75 (11): 3002–3003. doi:10.1111/evo.14345. ISSN 0014-3820. PMID 34486115. https://academic.oup.com/evolut/article/75/11/3002/6705348.
- ↑ Nozaki, Hisayoshi (2006). "Morphology, molecular phylogeny and taxonomy of two new species of Pleodorina (Volvocaceae, Chlorophyceae)". Journal of Phycology 42 (5): 1072–1080. doi:10.1111/j.1529-8817.2006.00255.x. https://onlinelibrary.wiley.com/doi/abs/10.1111/j.1529-8817.2006.00255.x.
- ↑ "Species of algae with three sexes that all mate in pairs identified in Japanese river" (in en). https://www.eurekalert.org/news-releases/547871.
- ↑ Nozaki, Hisayoshi; Mori, Toshiyuki; Misumi, Osami; Matsunaga, Sachihiro; Kuroiwa, Tsuneyoshi (2006-12-19). "Males evolved from the dominant isogametic mating type". Current Biology 16 (24): R1018–1020. doi:10.1016/j.cub.2006.11.019. ISSN 0960-9822. PMID 17174904. https://pubmed.ncbi.nlm.nih.gov/17174904/.
- ↑ 6.0 6.1 Sawada, Hitoshi; Inoue, Naokazu; Iwano, Megumi (2014-02-07) (in en). Sexual Reproduction in Animals and Plants. Springer. pp. 215–226. ISBN 978-4-431-54589-7. https://books.google.com/books?id=Adm6BQAAQBAJ&q=origin+of+male+and+female.
- ↑ Takahashi, Kohei; Kawai‐Toyooka, Hiroko; Ootsuki, Ryo; Hamaji, Takashi; Tsuchikane, Yuki; Sekimoto, Hiroyuki; Higashiyama, Tetsuya; Nozaki, Hisayoshi (November 2021). "Three sex phenotypes in a haploid algal species give insights into the evolutionary transition to a self‐compatible mating system*" (in en). Evolution 75 (11): 2984–2993. doi:10.1111/evo.14306. ISSN 0014-3820. PMID 34250602.
Wikidata ☰ Q69647316 entry
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