The following is a list of archived papers and developments/news relevant to Volvocales.
2007
November
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Ishida K |
October
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Merchant SS, Prochnik SE, Vallon O, et al. |
August
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Hallmann A |
July
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Duncan L, Nishii I, Harryman A, et al. |
June
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The release of the Volvox carteri genome draft at the Joint Genome Institute. |
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Solari CA, Kessler JO, Goldstein RE |
May
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Michod RE |
April
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Check out new movies of Volvox barberi hatching, Volvox carteri rolling, and flagellar beating in Volvox carteri; visit Cristian Solari's and Ray Goldstein's webpages |
February
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Maintenance DNA methyltransferase (Met1) and silencing of CpG-methylated foreign DNA in Volvox carteri. P. Babinger, R. Volkl, I. Cakstina, A. Maftei, and R. Schmitt. Plant Mol. Biol. 63: 325-336. |
January
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Quantitative analysis of cell-type specific gene
expression in the green alga Volvox carteri.
BMC Genomics 2006, 7:321 doi:10.1186/1471-2164-7-321 |
2006
December
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Summary of sex-induction and zygote germination protocols for volvocine algae - Contributed by Matt Herron (University of Arizona) |
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Oogamy: Inventing the Sexes |
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Males evolved from the dominant isogametic
mating type |
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Hallmann A |
November
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Fukada K, Inoue T,
Shiraishi H |
October
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Babinger K, Hallmann A,
Schmitt R |
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Nozaki H, Ott FD, Coleman
AW |
September
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A wiki has been added to VIP!!!!! Visit and contribute to the new Volvocales wiki!!!! |
August
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New Scientist and The Economist Stories on the finding of a Volvox RegA-like gene family in Chlamydomonas reinhardtii (Nedelcu AM and RE Michod. The evolutionary origin of an altruistic gene. Mol. Biol. Evol. 23: 1460-1464) |
June-July
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Hallmann A, Wodniok S |
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Short MB, Solari CA,
Ganguly S, et al. |
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Duncan L, Nishii I, Howard
A, et al. |
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Michod RE |
May
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Paper on a regA gene family in Chamydomonas reinhardtii: Nedelcu, AM and RE Michod. The evolutionary origin of an altruistic gene. Mol. Biol. Evol. 23: 1460-1464 |
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The 12th International conference on the cell and molecular biology of Chlamydomonas (May 9 - May 14, Portland, Oregon) has a session on Volvox !!!! http://www.genetics.wustl.edu/chlamy2006/ |
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Cheng Q, Hallmann A,
Edwards L, et al. |
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Nedelcu, AM. Evidence for p53-like-mediated stress responses in green algae. FEBS Letters 580:3013-3017 |
March & April
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Another three paper on Volvox et al. !!!! |
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Cheng Q, Balzer E, Miller SM, Yoshida M, Wong JC. Effect of histone deacetylase inhibitors on tubulin acetylation and development in Volvox carteri (Volvocales). JOURNAL OF PHYCOLOGY 42 (2): 417-422 APR 2006 |
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Michod RE, Viossat Y,
Solari CA, et al. |
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Solari CA, Kessler JO,
Michod RE |
February
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A new paper on Volvox et al. !!!! An interesting story on a new role for flagella in Volvox: Solari CA, Kessler JO, Michod RE, and Goldstein RE. Multicellularity and the functional interdependence of motility and molecular transport. PNAS 103 (5): 1353-1358 JAN 31 2006 |
January
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A list of Volvox available nucleotide sequences (by gene/feature for various Volvox species) with links to the GenBank records (courtesy of A. Nedelcu and M. English); follow the link or go to Research Tools |
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A new paper on Volvox et al: |
Hallmann, A. 2006. The pherophorins: common, versatile building blocks in the evolution of extracellular matrix architecture in Volvocales. The Plant Journal 45:292-307
2005
December
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Release of version 3.0 of the Chlamydomonas reinhardtii genome sequence at the JGI |
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Web site for Chlamydomonas 2006 meeting. 12th International Conference on Cell and Molecular Biology of Chlamydomonas will be held May 9-14, 2006 in Portland, Oregon. |
November
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A different way to look at the classification of volvocine algae |
Yoshida H, Yokomori T, Suyama A. A simple classification of the volvocine algae by formal languages. BULLETIN OF MATHEMATICAL BIOLOGY 67 (6): 1339-1354 NOV 2005
Abstract: There are several explanations of why certain primitive multicellular organisms aggregate in particular forms and why their constituent cells cooperate with one another to a particular degree. Utilizing the framework of formal language theory, we have derived one possible simple classification of the volvocine algae-one of the primitive multicells-for some forms of aggregation and some degrees of cooperation among cells. The volvocine algae range from the unicellular Chlamydomonas to the multicellular Volvox globator, which has thousands of cells. The classification we use in this paper is based on the complexity of Parikh sets of families on Chomsky hierarchy in formal language theory. We show that an alga with almost no space closed to the environment, e.g., Gonium pectorale, can be characterized by PsFIN, one with a closed space and no cooperation, e.g., Eudorina elegans, by PsCF, and one with a closed space and cooperation, e.g., Volvox globator, by Ps lambda SC. This classification should provide new insights into the necessity for specific forms and degrees of cooperation in the volvocine algae. (c) 2005 Society for Mathematical Biology.
October
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Three new articles on Volvox!!!! |
Cheng Q, Pappas V, Hallmann A, et al. Hsp70A and GlsA interact as partner chaperones to regulate asymmetric division in Volvox. DEVELOPMENTAL BIOLOGY 286 (2): 537-548 OCT 15 2005
Abstract: GlsA, a J-protein chaperone, is required for the asymmetric divisions that set aside germ and somatic cell precursors during embryogenesis in Volox carteri, and previous evidence indicated that this function requires an intact Hsp70-binding site. To determine if Hsp70A, the only known cytoplasmic Hsp70 in V. carteri, is the chaperone partner of GlsA, we investigated the localization of the two proteins during critical stages of embryogenesis and tested their capacity to interact. We found that a substantial fraction of Hsp70A co-localizes with GlsA, both in interphase and mitotic blastomeres. In addition, Hsp70A coimmunoprecipitated with GlsA, and co-expression of GlsA and Hsp70A variants partially rescued the Gls phenotype of a glsA mutant, whereas neither variant by itself rescued the mutant phenotype. Immunofluorescence analysis demonstrated that GlsA is about equally abundant in all blastomeres at all cleavage stages examined but that Hsp70A is more abundant in anterior (asymmetrically dividing) blastomeres than in posterior (symmetrically dividing) blastomeres during the period of asymmetric division. We conclude that Hsp70A and GlsA function as chaperone partners that regulate asymmetric division and that the relative abundance of Hsp70A in asymmetrically dividing embryos may determine which blastomeres divide asymmetrically and which do not.
Aono N, Inoue T, Shiraishi H. Genes specifically expressed in sexually differentiated female spheroids of Volvox carteri. JOURNAL OF BIOCHEMISTRY 138 (4): 375-382 OCT 2005
Wadhwa V, Kumar S, Rai S, et al.
A 'pseudo outbreak' of the contamination of blood cultures with Volvox
globator. ANNALS OF TROPICAL MEDICINE AND PARASITOLOGY 99 (7): 719-720 OCT
2005
September
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Article on Chlamydomonas stress genes co-opted for sex in Volvox carteri (by AM Nedelcu) in Proceedings of the Royal Society B 272:1935-1940 |
August
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New Scientist story on a recent article on Chlamydomonas stress genes co-opted for sex in Volvox carteri (by AM Nedelcu) in Proceedings of the Royal Society B |
March
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A nice picture set
depicting many volvocalen algae and Volvox carteri
mutants! C |
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A
color plate depicting a
subset of volvocalean algae. C |
2004
December
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Land of the Rising Chlamy: A Report of the 11th International Meeting on the Cell and Molecular Biology of Chlamydomonas held in Kobe, Japan, from May 11-15, 2004. In Protist, Vol. 155: 373-38o, December 2004 |
November
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Novel method for
the cryopreservation of testicular sperm and ejaculated spermatozoa from
patients with severe oligospermia: a pilot study |
October
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Check the link to the University of Toronto Culture Collection of Algae and Cyanobacteria (UTCC) in the VIP Cultures section; the list of UTCC strains now includes UTCC 629 Volvox carteri which is equivalent to CCCM 7096 and former UTEX LB 1875 (not included yet in the web list, but contact Judy Acreman at jacreman@botany.utoronto.ca). |
August
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Dr. David L. Kirk's quick guide to Volvox; in CURRENT BIOLOGY, 14, R599-R600 (for pdf click here) |
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July
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Pdf file of a recent
paper on sex and oxidative stress in Volvox carteri:
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A wonderful Perspective on their research on Volvox, by Drs. Marilyn M. Kirk and David L. Kirk in the June 2004 issue of J. Biosci. |
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Pdf files of Dr. Desnitskiy's seminal papers on development in Volvox, and the evolution of multicellularity |
June
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Our Volvocales plate featured in "Everything you always wanted to know about sexes" by John Whitfield, PLoS Biology, 2(6):718-721. |
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Volvox makes the news! C
CBC Radio – Information Morning, Saint John; June 23, 2004; Algae Sex (http://nb.cbc.ca/saintjohn/media/algae23.ram)
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May
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Literature database: titles and abstracts (some PDFs too) for all publications related to Volvox, Pleodorina, Eudorina, Gonium, from 1973 to date; see Publications |
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Chlamydomonas Genetics |
April
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Links to descriptions and images of Volvocales via the Protist Information Server, and to Culture collections |
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Movies (QuickTime) of Volvox carteri; courtesy of Cristian Solari, John Kessler and Ray Goldstein |
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Photographs of Gonium pectorale, Eudorina elegans, Pleodorina californica, and Volvox carteri; courtesy of Aurora Nedelcu |
March
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Abstract of a recently accepted paper (Proc. Roy. Soc. Biological Sciences) on reactive oxygen species and sex in Volvox carteri; courtesy of Aurora Nedelcu |
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Media recipes |
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Dr. Alexei Desnitskiy joins VIP |
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two papers (2000, 2002) and an abstract (2003) on Volvox ecology, geographical distribution, development and reproduction - courtesy of Alexei Desnitskiy |
February
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"Red" Volvox - chlorophyll autofluoresence; courtesy of Aurora Nedelcu |
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"Bright" Volvox - bright field image; courtesy of Aurora Nedelcu |
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"hot" Volvox - heat-stressed sex-induced Volvox; courtesy of Oana Marcu and Aurora Nedelcu |
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"Christmas" Volvox - heat-induced apoptosis in Volvox; green DCFDA fluoresecence; courtesy of Oana Marcu and Aurora Nedelcu |
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January
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pdf files of two papers on Volvox carteri (see Publications); courtesy of Aurora Nedelcu and Rick Michod |
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Diagram of Volvox carteri sexual cycle (see Life-history); courtesy of Rick Michod |
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Picture of an asexual Volvox carteri female with asexual babies (see Photo Album); courtesy of Cristian Solari |
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List of publications (year 2003) on Volvox (see Publications) |