Eudorina

Summary Eudorina is a paraphyletic genus in the volovocine green algae clade. Eudorina colonies consist of 16, 32 or 64 individual cells grouped together. Each individual cell contains flagella which allow the colony to move as a whole when the individual cells beat their flagella together. Description by GM Smith (1920, p 95): Sources and Credits • (c) Shelly Wu, some rights reserved (CC BY-NC), uploaded by Shelly Wu • (c) Wikipedia, some rights reserved (CC BY-SA), More Info • • • • • • • •

Genus of algae Eudorina Eudorina elegans (unranked): Division: Class: Order: Family: Genus: Eudorina Ehrenberg Species • • • • • Eudorina is a paraphyletic Description [ ] Eudorina colonies typically consist of 16, 32 or 64 cells, each of which is similar to Eudorina is facultatively sexual, meaning colonies can reproduce either sexually or asexually. Chlamydomonas-like cell undergoes several rounds of division to form plakeas, which then invert to form daughter colonies before hatching out of the mother colony. • See the . Retrieved 2007-03-19. • Smith, GM. Phytoplankton of Inland Lakes of Wisconsin, Part I, Wisconsin Geological and Natural History Survey, Madison, WI. (1920). • Coleman, AW (2012). "A Comparative Analysis of the Volvocaceae (Chlorophyta)1". Journal of Phycology. 48 (3): 491–513. • Gottlieb; Goldstein (1977). "Colony development in Eudorina elegans". Journal of Phycology. 13: 358–364. External links [ ] • Yamada, T.Y, Miyaja,K. and Nisayoshi, N. 2008. A taxonomic study of Eudorina unicocca (Volvocaceae, Chlorophyceae) and related species, based on morphology and molecular phylogeny. Eur. L.Phycol. 43: 317 - 326.

Thank you for visiting nature.com. You are using a browser version with limited support for CSS. To obtain the best experience, we recommend you use a more up to date browser (or turn off compatibility mode in Internet Explorer). In the meantime, to ensure continued support, we are displaying the site without styles and JavaScript. • Article • • 08 March 2018 Anisogamy evolved with a reduced sex-determining region in volvocine green algae • ORCID: orcid.org/0000-0002-2801-2148 • ORCID: orcid.org/0000-0002-0168-6206 • • • • • ORCID: orcid.org/0000-0002-0728-7548 • • • ORCID: orcid.org/0000-0003-4094-9045 • … • ORCID: orcid.org/0000-0002-9308-4498 Show authors Communications Biology volume 1, Article number: 17 ( 2018) Male and female gametes differing in size—anisogamy—emerged independently from isogamous ancestors in various eukaryotic lineages, although genetic bases of this emergence are still unknown. Volvocine green algae are a model lineage for investigating the transition from isogamy to anisogamy. Here we focus on two closely related volvocine genera that bracket this transition—isogamous Yamagishiella and anisogamous Eudorina. We generated de novo nuclear genome assemblies of both sexes of Yamagishiella and Eudorina to identify the dimorphic sex-determining chromosomal region or mating-type locus ( MT) from each. In contrast to the large (>1 Mb) and complex MT of oogamous Volvox, Yamagishiella and Eudorina MT are smaller (7–268 kb) and simpler with only two sex-lim...

Pleodorina In most species of Pleodorina, at least four and up to 50% of cells in the anterior region of the spheroid are small and differentiated as somatic cells (while all remaining cells are undifferentiated), and in P. sphaerica even more cells are somatic (Coleman, 2012; From: The Chlamydomonas Sourcebook (Third Edition), 2023 Related terms: • Volvox • Genus • Chlamydomonas • Germ Cell • Mating Type • Gonium • Cell Division • Eudorina • Pandorina • Somatic Cell James G. Umen, Bradley J.S.C. Olson, in Advances in Botanical Research, 2012 3.3The Volvox Nuclear Genome Structure Previous genetic mapping defined 19 linkage groups for Volvox that probably correspond to chromosomes ( Kirk, 1998), though exact chromosome number remains to be established. The ∼131Mbp Volvox nuclear genome sequence assembly (version 2) contains 434 scaffolds, 100 of which are >50kbp and contain over 98% of the sequence. Updated assemblies and annotations are available on the Phytozome Web site ( Table 6.2) ( Goodstein et al., 2011). The extra ∼14Mbp of sequence in Volvox compared with Chlamydomonas is composed of repeats that are interspersed within and between genes ( Prochnik et al., 2010). A second difference between the two algae is that the Volvox genome is ∼56% GC, while Chlamydomonas is ∼64% GC. However, with respect to coding capacity, Volvox is highly similar to Chlamydomonas with ∼15,000 predicted protein-coding genes ( Prochnik et al., 2010). A more detailed comparison of gene conte...

Masaki Kita, ... Daisuke Uemura, in Comprehensive Natural Products II, 2010 4.06.2.2Green Algae The volvocine algae range in complexity from unicellular Chlamydomonas through colonial genera (such as Gonium, Pandorina, and Eudorina) to multicellular organisms and are capable of both asexual and sexual reproduction. 28 Volvox carteri reproduces asexually most of the time in nature, but would die in minutes once their pond dried up in the heat of late summer. However, V. carteri can survive by switching to a sexual life cycle shortly before the water disappears, to produce dormant zygotes that survive the drought. When rain fills the pond again in spring, the zygotes hatch out to establish a new generation of asexually reproducing individuals. In the early 1970s, sexual development in V. carteri was found to be initiated by a sex-inducing pheromone, a 32-kDa glycoprotein. 29,30 On the basis of the results of cDNA cloning and sequence analysis, its primary structure was deduced to contain 208 amino acids including a signal sequence and six putative N-glycosylation sites. 31,32 It has been shown that this sex-inducing pheromone leads to gamete production at a concentration of about 10 –16moll −1. Thus, this pheromone is one of the most potent biological effector molecules known. Although it is still unknown why this sex-inducing pheromone is active at such a low concentration in V. carteri, it has been demonstrated that the sexual cycle is initiated by heat shock that causes t...

Thank you for visiting nature.com. You are using a browser version with limited support for CSS. To obtain the best experience, we recommend you use a more up to date browser (or turn off compatibility mode in Internet Explorer). In the meantime, to ensure continued support, we are displaying the site without styles and JavaScript. • Article • • 08 March 2018 Anisogamy evolved with a reduced sex-determining region in volvocine green algae • ORCID: orcid.org/0000-0002-2801-2148 • ORCID: orcid.org/0000-0002-0168-6206 • • • • • ORCID: orcid.org/0000-0002-0728-7548 • • • ORCID: orcid.org/0000-0003-4094-9045 • … • ORCID: orcid.org/0000-0002-9308-4498 Show authors Communications Biology volume 1, Article number: 17 ( 2018) Male and female gametes differing in size—anisogamy—emerged independently from isogamous ancestors in various eukaryotic lineages, although genetic bases of this emergence are still unknown. Volvocine green algae are a model lineage for investigating the transition from isogamy to anisogamy. Here we focus on two closely related volvocine genera that bracket this transition—isogamous Yamagishiella and anisogamous Eudorina. We generated de novo nuclear genome assemblies of both sexes of Yamagishiella and Eudorina to identify the dimorphic sex-determining chromosomal region or mating-type locus ( MT) from each. In contrast to the large (>1 Mb) and complex MT of oogamous Volvox, Yamagishiella and Eudorina MT are smaller (7–268 kb) and simpler with only two sex-lim...

Summary Eudorina is a paraphyletic genus in the volovocine green algae clade. Eudorina colonies consist of 16, 32 or 64 individual cells grouped together. Each individual cell contains flagella which allow the colony to move as a whole when the individual cells beat their flagella together. Description by GM Smith (1920, p 95): Sources and Credits • (c) Shelly Wu, some rights reserved (CC BY-NC), uploaded by Shelly Wu • (c) Wikipedia, some rights reserved (CC BY-SA), More Info • • • • • • • •

Pleodorina In most species of Pleodorina, at least four and up to 50% of cells in the anterior region of the spheroid are small and differentiated as somatic cells (while all remaining cells are undifferentiated), and in P. sphaerica even more cells are somatic (Coleman, 2012; From: The Chlamydomonas Sourcebook (Third Edition), 2023 Related terms: • Volvox • Genus • Chlamydomonas • Germ Cell • Mating Type • Gonium • Cell Division • Eudorina • Pandorina • Somatic Cell James G. Umen, Bradley J.S.C. Olson, in Advances in Botanical Research, 2012 3.3The Volvox Nuclear Genome Structure Previous genetic mapping defined 19 linkage groups for Volvox that probably correspond to chromosomes ( Kirk, 1998), though exact chromosome number remains to be established. The ∼131Mbp Volvox nuclear genome sequence assembly (version 2) contains 434 scaffolds, 100 of which are >50kbp and contain over 98% of the sequence. Updated assemblies and annotations are available on the Phytozome Web site ( Table 6.2) ( Goodstein et al., 2011). The extra ∼14Mbp of sequence in Volvox compared with Chlamydomonas is composed of repeats that are interspersed within and between genes ( Prochnik et al., 2010). A second difference between the two algae is that the Volvox genome is ∼56% GC, while Chlamydomonas is ∼64% GC. However, with respect to coding capacity, Volvox is highly similar to Chlamydomonas with ∼15,000 predicted protein-coding genes ( Prochnik et al., 2010). A more detailed comparison of gene conte...

Masaki Kita, ... Daisuke Uemura, in Comprehensive Natural Products II, 2010 4.06.2.2Green Algae The volvocine algae range in complexity from unicellular Chlamydomonas through colonial genera (such as Gonium, Pandorina, and Eudorina) to multicellular organisms and are capable of both asexual and sexual reproduction. 28 Volvox carteri reproduces asexually most of the time in nature, but would die in minutes once their pond dried up in the heat of late summer. However, V. carteri can survive by switching to a sexual life cycle shortly before the water disappears, to produce dormant zygotes that survive the drought. When rain fills the pond again in spring, the zygotes hatch out to establish a new generation of asexually reproducing individuals. In the early 1970s, sexual development in V. carteri was found to be initiated by a sex-inducing pheromone, a 32-kDa glycoprotein. 29,30 On the basis of the results of cDNA cloning and sequence analysis, its primary structure was deduced to contain 208 amino acids including a signal sequence and six putative N-glycosylation sites. 31,32 It has been shown that this sex-inducing pheromone leads to gamete production at a concentration of about 10 –16moll −1. Thus, this pheromone is one of the most potent biological effector molecules known. Although it is still unknown why this sex-inducing pheromone is active at such a low concentration in V. carteri, it has been demonstrated that the sexual cycle is initiated by heat shock that causes t...

Genus of algae Eudorina Eudorina elegans (unranked): Division: Class: Order: Family: Genus: Eudorina Ehrenberg Species • • • • • Eudorina is a paraphyletic Description [ ] Eudorina colonies typically consist of 16, 32 or 64 cells, each of which is similar to Eudorina is facultatively sexual, meaning colonies can reproduce either sexually or asexually. Chlamydomonas-like cell undergoes several rounds of division to form plakeas, which then invert to form daughter colonies before hatching out of the mother colony. • See the . Retrieved 2007-03-19. • Smith, GM. Phytoplankton of Inland Lakes of Wisconsin, Part I, Wisconsin Geological and Natural History Survey, Madison, WI. (1920). • Coleman, AW (2012). "A Comparative Analysis of the Volvocaceae (Chlorophyta)1". Journal of Phycology. 48 (3): 491–513. • Gottlieb; Goldstein (1977). "Colony development in Eudorina elegans". Journal of Phycology. 13: 358–364. External links [ ] • Yamada, T.Y, Miyaja,K. and Nisayoshi, N. 2008. A taxonomic study of Eudorina unicocca (Volvocaceae, Chlorophyceae) and related species, based on morphology and molecular phylogeny. Eur. L.Phycol. 43: 317 - 326.