Molecular cloning of a novel phytochrome gene of the moss Ceratodon purpureus which encodes a putative light-regulated protein kinase

Thümmler, F.; Dufner, Monika; Kreisl, Peter; Dittrich, P.

doi:10.1007/bf00028888

Cited by 100 publications

(66 citation statements)

References 47 publications

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“…In the moss Ceratodon purpureus, two phytochrome sequences have been reported: a conventional one (CERPU;PHY0;2, Hughes, Lamparter & Mittmann 1996; K. Pasentsis, N. Paulo, P. Dittrich, P. Algarra & F. Thummler, University of Munich, unpublished results), which we abbreviate as PHYCER2, and a second species which has a protein kinase domain in the C-terminus (PHYCER; Thummler et al 1992) similar to Adiantum PHY3. A conventional phytochrome sequence was also obtained from a Physcomitrella cDNA library.…”

Section: Gene Family and Molecular Speciesmentioning

confidence: 99%

Cryptogam phytochromes

WADA¹,

Kanegae²,

Nozue³

et al. 1997

Plant Cell & Environment

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Section: Gene Family and Molecular Speciesmentioning

confidence: 99%

Cryptogam phytochromes

WADA¹,

Kanegae²,

Nozue³

et al. 1997

Plant Cell & Environment

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“…The genomes of bryophytes have been suggested to be a rich source of novel genes (Matsunaga et al, 2004;Proctor, 2001;Rensing et al, 2002;Wood et al, 1999). Mention may be made of a novel phytochrome gene in the moss Ceratodon purpureus which actually encodes a light regulated protein kinase of 140 kDa (Thummler et al, 1992). Because of the highest ratio of homologous recombination to nonhomologous recombination (Schaefer and Zrÿd, 1997), the moss Physcomitrella patens has become highly amenable to a genetic analysis of genes at a level comparable to the yeast.…”

Section: Bryophytes As An Ancient Lineage May Have Retained Many Novementioning

confidence: 99%

Hormonal regulation in green plant lineage families

Johri

2008

Physiol Mol Biol Plants

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The patterns of phytohormones distribution, their native function and possible origin of hormonal regulation across the green plant lineages (chlorophytes, charophytes, bryophytes and tracheophytes) are discussed. The five classical phytohormonesauxins, cytokinins, gibberellins (GA), abscisic acid (ABA) and ethylene occur ubiquitously in green plants. They are produced as secondary metabolites by microorganisms. Some of the bacterial species use phytohormones to interact with the plant as a part of their colonization strategy. Phytohormone biosynthetic pathways in plants seem to be of microbial origin and furthermore, the origin of high affinity perception mechanism could have preceded the recruitment of a metabolite as a hormone. The bryophytes represent the earliest land plants which respond to the phytohormones with the exception of gibberellins. The regulation by auxin and ABA may have evolved before the separation of green algal lineage. Auxin enhances rhizoid and caulonemal differentiation while cytokinins enhance shoot bud formation in mosses. Ethylene retards cell division but seems to promote cell elongation. The presence of responses specific to cytokinins and ethylene strongly suggest the origin of their regulation in bryophytes. The hormonal role of GAs could have evolved in some of the ferns where antheridiogens (compounds related to GAs) and GAs themselves regulate the formation of antheridia.During migration of life forms to land, the tolerance to desiccation may have evolved and is now observed in some of the microorganisms, animals and plants. Besides plants, sequences coding for late embryogenesis abundant-like proteins occur in the genomes of other anhydrobiotic species of microorganisms and nematodes. ABA acts as a stress signal and increases rapidly upon desiccation or in response to some of the abiotic stresses in green plants. As the salt stress also increases ABA release in the culture medium of cyanobacterium Trichormus variabilis, the recruitment of ABA in the regulation of stress responses could have been derived from prokaryotes and present at the level of common ancestor of green plants. The overall hormonal action mechanisms in mosses are remarkably similar to that of the higher plants. As plants are thought to be monophyletic in origin, the existence of remarkably similar hormonal mechanisms in the mosses and higher plants, suggests that some of the basic elements of regulation cascade could have also evolved at the level of common ancestor of plants. The networking of various steps in a cascade or the crosstalk between different cascades is variable and reflects the dynamic interaction between a species and its specific environment.

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“…Ceratodon has two expressed genes related to phytochrome, designated PhyCer (Thummler et al 1992) and CpPHY2 (Hughes, Lamparter & Mittmann 1996). Their N-tennini are homologous with other phytochrotnes and share 89% of their amino acids; however, the C-terminus of PhyCer is unrelated to CpPHY2 and to all other phytochromes.…”

Section: Phy Gene Diversity In Land Plantsmentioning

confidence: 99%

Phytochrome gene diversity

Mathews

Sharrock

1997

Plant Cell & Environment

263

214

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The structures and functions of the phytochrome apoprotein genes (the PHY genes), their diversity across the plant kingdom, and their evolution are central concerns in the study of red-light sensing in plants. We summarize here recent advances in two areas relating to these topics: (1) the characteristics of the PHY gene family in Arabidopsis thaliana, the higher plant species for which the most extensive information on these genes is available, and (2) the similarity relationships, phylogeny, and evolutionary implications of PHY gene sequences and partial sequences which have been described from various plants. Together, these two areas of study, one directed at understanding in detail the phytochromes present in a single species and the other directed at a much broader understanding of PHY gene relatedness and distribution, are producing an increasingly clear picture of the diversity and evolution of plant red-light photoreceptors. Moreover, they suggest that the complexity of the phytochrome family has increased as land plants have evolved novel morphologies.

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Molecular cloning of a novel phytochrome gene of the moss Ceratodon purpureus which encodes a putative light-regulated protein kinase

Cited by 100 publications

References 47 publications

Cryptogam phytochromes

Cryptogam phytochromes

Hormonal regulation in green plant lineage families

Phytochrome gene diversity

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