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A gibberellin insensitive mutant of Arabidopsis thaliana (1985)

Koorneef, M. ; Elgersma, A. ; Hanhart, C. J. ; [et al.]

Oxford, UK : Blackwell Publishing Ltd

Physiologia plantarum 65 (1985), S. 0

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ISSN: 1399-3054

Source: Blackwell Publishing Journal Backfiles 1879-2005

Topics: Biology

Notes: A dwarf mutant of Arabidopsis thaliana (L.) Heynh. was found to be less sensitive to applied gibberellins than the wild type, and this character was controlled by one partially-dominant gene (denoted Gai) located on chromosome 1. This mutant resembled gibberellin-deficient mutants since not only stem growth, but also apical dominanace and seed germination were reduced. However, in contrast to the latter mutants, gibberellin does not reverse these effects in the Gai mutant. The insensitivity of the mutant could be quantified in much more detail in the recombinant of this mutation with the GA deficient mutant ga-1/ga-1. Endogenous gibberellins of the Gai mutant did not differ from the wild type either in quantity or composition. The data suggest that the gene controls a step involved in gibberellin action.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1111/j.1399-3054.1985.tb02355.x

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Photomorphogenic mutants of tomato (1994)

Kendrick, R. E. ; Kerckhoffs, L. H. J. ; Pundsnes, A. S. ; [et al.]

Springer

Euphytica 79 (1994), S. 227-234

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ISSN: 1573-5060

Keywords: Lycopersicon esculentum ; photomorphogenesis ; phytochrome ; signal transduction ; chromophore ; aurea

Source: Springer Online Journal Archives 1860-2000

Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition

Notes: Abstract Photomorphogenesis of tomato is being studied with the aid of mutants which are either modified in their photoreceptor composition or in their signal transduction chain(s). Several mutants affecting the phytochrome family of photoreceptors, some of which appear deficient for specific genes encoding phytochrome apoproteins have been isolated. In addition, other mutants, including transgenic lines overexpressing phytochrome A, exhibit exaggerated photomorphogenesis during de-etiolation. Anthocyanin biosynthesis and plastid development are being used as model systems for the dissection of the complex interactions among photomorphogenic photoreceptors and to elucidate the nature of their transduction chains.