Journal article

Publication year: 1996

Pages: 560-568

Journal: Plant, Cell and Environment

Volume number: 19

Issue number: 5

ISSN: 0140-7791

DOI Link: https://doi.org/10.1111/j.1365-3040.1996.tb00389.x

Publisher: Wiley

Abstract: 
Following UV mutagenesis of protonemal tissue of the moss Ceratodon purpureus we have isolated different aphototropic mutant lines that can be divided into two distinct classes, One class, represented by the line ptr1, shows characteristic features of phytochrome chromophore deficiency, ptr1 shows negligible photoreversibility (<5% of wild type), whereas immunoblots show normal apoprotein levels, The aphototropic phenotype could be partially restored with biliverdin, a precursor of the phytochrome chromophore, It was found that, whereas in wild type formation of Pfr leads to suppression of gravitropism, there is no such suppression in ptr1, In addition, ptr1 shows lower chlorophyll levels than the wild type, These findings indicate that, as expected for a chromophore-deficient mutant, multiple phytochrome effects are lost, The other class of mutants, represented by the line ptr103, shows more specific effects, In this mutant, only phototropism is affected, Suppression of gravitropism, the content of chlorophyll and photoreversibility of phytochrome were similar to those of the wild type.

Harvard Citation style: Lamparter, T., Esch, H., Cove, D., Hughes, J. and Hartmann, E. (1996) Aphototropic mutants of the moss Ceratodon purpureus with spectrally normal and with spectrally dysfunctional phytochrome, Plant, Cell and Environment, 19(5), pp. 560-568. https://doi.org/10.1111/j.1365-3040.1996.tb00389.x

APA Citation style: Lamparter, T., Esch, H., Cove, D., Hughes, J., & Hartmann, E. (1996). Aphototropic mutants of the moss Ceratodon purpureus with spectrally normal and with spectrally dysfunctional phytochrome. Plant, Cell and Environment. 19(5), 560-568. https://doi.org/10.1111/j.1365-3040.1996.tb00389.x