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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
MeSH Review

Chara

 
 
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High impact information on Chara

  • Primary fixation with buffered glutaraldehyde plus 2.0 mM CaCl2 and 0.1% tannic acid results in the preservation of certain portions of the plasma membrane coat of Chara when seen with the electron microscope [1].
  • Determination of the inorganic pyrophosphate level and its subcellular localization in Chara corallina [2].
  • Marchantia protamines appear as four components on acid-urea gels, whereas Chara and Marsilea protamines comigrate as a single band with a mobility comparable to salmon protamine [3].
  • Relocalization of the calcium gradient and a dihydropyridine receptor is involved in upward bending by bulging of Chara protonemata, but not in downward bending by bowing of Chara rhizoids [4].
  • The localization of cytoplasmic free calcium and a dihydropyridine (DHP) receptor, a putative calcium channel, was recorded during the opposite graviresponses of tip-growing Chara rhizoids and Chara protonemata by using the calcium indicator Calcium Crimson and a fluorescently labeled dihydropyridine (FL-DHP) [4].
 

Biological context of Chara

  • When uncoated polystyrene beads suspended in Mg-ATP solution were introduced into the internodal cell of an alga Chara corallina, the beads moved along the actin cables with directions and velocities (30-62 microns s-1) similar to those of native cytoplasmic streaming [5].
  • Thus, in both Arabidopsis roots and Chara rhizoids, the sites of gravity perception/transduction appear to be enriched in integrin-like molecules [6].
  • The influence of 48-h treatment with epoxomicin, an inhibitor of proteolytic activity of proteasomes, at the concentration 10 microM, on spermiogenesis in algae Chara vulgaris was examined [7].
  • Changes in the activity of RNA polymerase detected in situ and the intensity of 3H uridine incorporation into the nucleolus and the nucleus of interphase cells in antheridial filaments of Chara vulgaris L [8].
  • Cell cycle control in synchronously dividing antheridial filaments of Chara vulgaris L. as revealed by cycloheximide pulse treatment [9].
 

Anatomical context of Chara

  • The results showed that (1) not only Ca2+ but also P(i) can be released from isolated calcified Chara cell walls into pure deionized water and 100 mM KCl solution, and (2) the positive charge due to the Ca2+ released cannot be neutralized only by the negative charge from the simultaneously released P(i) [10].
  • It was found that the motile activity of myosin prepared from NEM-treated C. corallina decreased to a level accountable for the decrease in the velocity of cytoplasmic streaming but it was also found that Chara myosin was far less susceptible to NEM than skeletal muscle myosin [11].
 

Associations of Chara with chemical compounds

 

Gene context of Chara

  • Myosin and Ca2+-sensitive streaming in the alga Chara: detection of two polypeptides reacting with a monoclonal anti-myosin and their localization in the streaming endoplasm [16].
  • In this study, a doubled haploid (DH) population derived from Chara (moderately high PPO activity)/WW2449 (low PPO activity) was screened for PPO activity based on L-DOPA and L-tyrosine assays using whole seeds [17].
  • Previous results have demonstrated that extracts derived from maturing male sex organs of Chara tomentosa are capable of inducing profound structural and functional effects upon M-phase cells in the primary root meristems of Melandrium noctiflorum and Allium cepa [18].

References

  1. Plasma membrane coat and a coated vesicle-associated reticulum of membranes: their structure and possible interrelationship in Chara corallina. Pesacreta, T.C., Lucas, W.J. J. Cell Biol. (1984) [Pubmed]
  2. Determination of the inorganic pyrophosphate level and its subcellular localization in Chara corallina. Takeshige, K., Tazawa, M. J. Biol. Chem. (1989) [Pubmed]
  3. Protamines in plant sperm. Reynolds, W.F., Wolfe, S.L. Exp. Cell Res. (1984) [Pubmed]
  4. Relocalization of the calcium gradient and a dihydropyridine receptor is involved in upward bending by bulging of Chara protonemata, but not in downward bending by bowing of Chara rhizoids. Braun, M., Richter, P. Planta (1999) [Pubmed]
  5. The force-velocity relationship of the ATP-dependent actin-myosin sliding causing cytoplasmic streaming in algal cells, studied using a centrifuge microscope. Chaen, S., Inoue, J., Sugi, H. J. Exp. Biol. (1995) [Pubmed]
  6. Immunolocalization of integrin-like proteins in Arabidopsis and Chara. Katembe, W.J., Swatzell, L.J., Makaroff, C.A., Kiss, J.Z. Physiol. Plantarum (1997) [Pubmed]
  7. The influence of epoxomicin, inhibitor of proteasomal proteolytic activity, on spermiogenesis in Chara vulgaris. Kwiatkowska, M., Wojtczak, A., Popłońska, K., Teodorczyk, M. Folia Histochem. Cytobiol. (2003) [Pubmed]
  8. Changes in the activity of RNA polymerase detected in situ and the intensity of 3H uridine incorporation into the nucleolus and the nucleus of interphase cells in antheridial filaments of Chara vulgaris L. Kwiatkowska, M., Maszewski, J. Folia histochemica et cytochemica. (1979) [Pubmed]
  9. Cell cycle control in synchronously dividing antheridial filaments of Chara vulgaris L. as revealed by cycloheximide pulse treatment. Olszewska, M.J., Bilecka, A., Kuran, H., Marciniak, K. Folia histochemica et cytochemica. (1982) [Pubmed]
  10. Ca2+ and phosphate releases from calcified Chara cell walls in concentrated KCl solution. Kiyosawa, K. J. Exp. Bot. (2001) [Pubmed]
  11. Susceptibility of Chara myosin to SH reagents. Seki, M., Awata, J.Y., Shimada, K., Kashiyama, T., Ito, K., Yamamoto, K. Plant Cell Physiol. (2003) [Pubmed]
  12. Enflurane is a potent inhibitor of high conductance Ca(2+)-activated K+ channels of Chara australis. Antkowiak, B., Kirschfeld, K. FEBS Lett. (1992) [Pubmed]
  13. Calcium release from InsP3-sensitive internal stores initiates action potential in Chara. Biskup, B., Gradmann, D., Thiel, G. FEBS Lett. (1999) [Pubmed]
  14. The uptake and metabolism of urea by Chara australis: IV. Symport with sodium--a slip model for the high and low affinity systems. Walker, N.A., Reid, R.J., Smith, F.A. J. Membr. Biol. (1993) [Pubmed]
  15. Acetylcholine-activated Cl- channel in the Chara tonoplast. Gong, X.Q., Bisson, M.A. J. Membr. Biol. (2002) [Pubmed]
  16. Myosin and Ca2+-sensitive streaming in the alga Chara: detection of two polypeptides reacting with a monoclonal anti-myosin and their localization in the streaming endoplasm. Grolig, F., Williamson, R.E., Parke, J., Miller, C., Anderton, B.H. Eur. J. Cell Biol. (1988) [Pubmed]
  17. Genetic and in silico comparative mapping of the polyphenol oxidase gene in bread wheat (Triticum aestivum L.). Raman, R., Raman, H., Johnstone, K., Lisle, C., Smith, A., Martin, P., Matin, P., Allen, H. Funct. Integr. Genomics (2005) [Pubmed]
  18. Cell cycle arrest in antheridial extract-treated root meristems of Allium cepa and Melandrium noctiflorum. Maszewski, J., Kaźmierczak, A., Polit, J. Folia Histochem. Cytobiol. (1998) [Pubmed]
 
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