Literature DB >> 828030

Spectroscopic properties and related functions of the stigma measured in living cells of Euglena gracilis.

P A Benedetti, G Bianchini, A Checcucci, R Ferrara, S Grassi.   

Abstract

The spectroscopic properties of stigma inside green and dark-grown cells and of isolated stigma globules have been studied by means of a microspectrophotometer build in the Laboratory. On the base of these results and of the analysis of the absorption spectra of a stigma suspension, cell suspension and the cell methanolic extracts, it can be inferred that pigments localized in the stigma are free carotenoids which are not closely packed and do not show an ordered arrangement. Furthermore, the efficiency of the stigma as shading device is duscussed.

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Year:  1976        PMID： 828030     DOI： 10.1007/BF00446551

Source DB:  PubMed          Journal:  Arch Microbiol        ISSN： 0302-8933            Impact factor:   2.552


  8 in total

1.  PHOTOTAXIS IN EUGLENA. I. ISOLATION OF THE EYE-SPOT GRANULES AND IDENTIFICATION OF THE EYE-SPOT PIGMENTS.

Authors:  P P BATRA; G TOLLIN
Journal:  Biochim Biophys Acta       Date:  1964-03-30

2.  Fast scanning microspectroscopy: an electrodynamic moving-condenser method.

Authors:  P A Benedetti; G Bianchini; G Chiti
Journal:  Appl Opt       Date:  1976-10-01       Impact factor: 1.980

3.  Structure and function in the euglenoid eyespot apparatus: The fine structure, and response to environmental changes.

Authors:  P A Kivic; M Vesk
Journal:  Planta       Date:  1972-03       Impact factor: 4.116

4.  Unbalanced growth and replication of chloroplast populations in Euglena gracilis.

Authors:  J R Cook
Journal:  J Gen Microbiol       Date:  1973-03

5.  Comparative studies on some decapod crustacean carotenoproteins.

Authors:  P F Zagalsky; H J Ceccaldi; R Daumas
Journal:  Comp Biochem Physiol       Date:  1970-06-01

6.  Action spectra for photoaccumulation of green and colorless Euglena: evidence for identification of receptor pigments.

Authors:  A Checcucci; G Colombetti; R Ferrara; F Lenci
Journal:  Photochem Photobiol       Date:  1976-01       Impact factor: 3.421

7.  Large Scale Isolation and Purification of Eyespot Granules from Euglena gracilis var. bacillaris.

Authors:  C J Bartlett; P L Walne; O J Schwarz; D H Brown
Journal:  Plant Physiol       Date:  1972-06       Impact factor: 8.340

8.  Phototaxis and sensory transduction in Euglena.

Authors:  B Diehn
Journal:  Science       Date:  1973-09-14       Impact factor: 47.728
  8 in total
  4 in total

1.  Influence of different light-dark cycles on motility and photosynthesis of Euglena gracilis in closed bioreactors.

Authors:  Peter R Richter; Sebastian M Strauch; Maria Ntefidou; Martin Schuster; Viktor Daiker; Adeel Nasir; Ferdinand W M Haag; Michael Lebert
Journal:  Astrobiology       Date:  2014-10-03       Impact factor: 4.335

2.  Absorbance spectra of the hematochrome-like granules and eyespot of Euglena gracilis by scan-free absorbance spectral imaging A(x, y, λ) within the live cells.

Authors:  Kyohei Yamashita; Takafumi Yagi; Takumi Isono; Yusuke Nishiyama; Masafumi Hashimoto; Koji Yamada; Kengo Suzuki; Eiji Tokunaga
Journal:  J Plant Res       Date:  2019-04-12       Impact factor: 2.629

3.  Effects of the Timing of Flashes of Light during the Course of Cellular Rotation on Phototactic Orientation of Individual Cells of Cryptomonas.

Authors:  H Kaneda; M Furuya
Journal:  Plant Physiol       Date:  1987-05       Impact factor: 8.340

4.  Carotenoids in the eyespot apparatus are required for triggering phototaxis in Euglena gracilis.

Authors:  Shota Kato; Kazunari Ozasa; Mizuo Maeda; Yuri Tanno; Shun Tamaki; Mieko Higuchi-Takeuchi; Keiji Numata; Yutaka Kodama; Mayuko Sato; Kiminori Toyooka; Tomoko Shinomura
Journal:  Plant J       Date:  2019-12-03       Impact factor: 6.417
  4 in total

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