Zobrazeno 1 - 10
of 13
pro vyhledávání: '"Ira N. Feit"'
Publikováno v:
Journal of Biosciences. 32:329-338
The three basic cell types in the migrating slug of Dictyostelium discoideum show differential chemotactic response to cyclic AMP (cAMP) and differential sensitivity to suppression of the chemotaxis by ammonia.The values of these parameters indicate
Publikováno v:
Journal of Biosciences. 26:157-166
A drop assay for chemotaxis to cAMP confirms that both anterior-like cells (ALC) and prestalk cells (pst cells) respond to cAMP gradients. We present evidence that the chemotactic response of both ALC and pst cells is suppressed by ammonia, but a hig
Publikováno v:
Developmental Genetics. 11:439-441
Vital dyes have been extensively used in many laboratories to distinguish the prestalk and prespore zones of a migrating slug in Dictyostelium discoideum. Here we present evidence that the two zones do not form immediately following aggregation, as i
Publikováno v:
Developmental genetics. 11(5-6)
Ammonia appears to be an important regulatory signal for several aspects of the Dictyostelium life cycle. The postulated role of ammonia in the determination of the prespore pathway in cells of the slug stage has led us to examine the effect of ammon
Autor:
Robert B. Sollitto, Ira N. Feit
Publikováno v:
Differentiation. 33:193-196
Culminating fruiting bodies of Dictyostelium discoideum were found to show negative chemotaxis toward ammonia, whether the gradient was created by an ammonia source (ammonium hydroxide solution) or an ammonia sink (oxalic acid or an ammonia-absorbing
Autor:
Ira N. Feit
Publikováno v:
Developmental Genetics. 9:639-652
Ammonia, at moderate concentrations, stimulates aggregate density of Dictyostelium mucoroides. The range of stimulatory concentrations includes ammonia concentrations established by populations of amebae. At higher concentrations, ammonia inhibits ag
Induction of stalk and spore cell differentiation by cyclic AMP in slugs of Dictyostelium discoideum
Publikováno v:
Science (New York, N.Y.). 200(4340)
Multicellular masses of the cellular slime mold Dictyostelium discoideum, under conditions which ordinarily suppress cell differentiation, develop clusters of stalk cells and spore cells when implanted with Sephadex particles that had been soaked in
Publikováno v:
Journal of Biosciences. Mar2007, Vol. 32 Issue 2, p329-338. 10p. 2 Black and White Photographs, 2 Diagrams, 8 Charts.
Autor:
Sternfeld, John1 sternfeld@cortland.edu, O'Mara, Ryan1
Publikováno v:
Development, Growth & Differentiation. Jan2005, Vol. 47 Issue 1, p49-58. 10p.
Autor:
The Washington Post
Publikováno v:
Washington Post, The. 02/05/2019.