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Identification of genes regulated by dark adaptation and far-red light illumination in roots of Arabidopsis thaliana (2004)

SATO-NARA, K. ; NAGASAKA, A. ; YAMASHITA, H. ; [et al.]

Oxford, UK : Blackwell Science Ltd

Plant, cell & environment 27 (2004), S. 0

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ISSN: 1365-3040

Source: Blackwell Publishing Journal Backfiles 1879-2005

Topics: Biology

Notes: Roots in the soil are illuminated by far-red (FR) light passed through plant tissues in the daytime, and are in complete darkness at night. To evaluate whether gene expression of roots is affected by a dark-FR light cycle, gene expression profiles were analysed for dark-adapted versus light-grown plants and for FR light-illuminated versus dark-adapted plants using the RIKEN Arabidopsis full-length cDNA microarray (containing approximately 7000 independent, full-length cDNA groups). Among candidate dark- and FR-regulated genes, several were further analysed. Eleven dark-inducible and five dark-repressed genes were characterized. Almost all the dark-inducible and –repressed genes were oppositely regulated by FR light illumination. The functions of dark- and FR-responsive genes and the significance of FR light-regulated gene expression in roots under ground are discussed.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1111/j.1365-3040.2004.01241.x

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Expression of S-100 protein in the human fetal inner ear (1995)

Yamashita, H. ; Takahashi, M. ; Bagger-Sjöbäck, D.

Springer

European archives of oto-rhino-laryngology and head & neck 252 (1995), S. 312-315

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ISSN: 1434-4726

Keywords: S-100 protein ; Inner ear ; Human fetus Development

Source: Springer Online Journal Archives 1860-2000

Topics: Medicine

Notes: Abstract The expression of S-100 protein was analyzed in the human fetal inner ear using immunohistochemical methods. In the 11-week-old human fetus, the cochlea was almost negative for S-100 protein, whereas in the 14- and 15-week-old fetuses, the spiral ligament, Reissner's membrane and spiral limbus were positive for the protein. These results suggest that S-100 protein may be a reliable marker for determining functional maturation of the fetal cochlea and the inner ear. In the l l-, 14- and 15-week fetuses, the epithelial cells of the endolymphatic sac were labelled with S-100 protein. These findings demonstrate that the endolymphatic sac, spiral limbus and spiral ligament in the fetal inner ear have a high activity of S-100 protein, with this presence possibly related to fluid and ion transport of endolymph.