Photoresponsive cAMP signal transduction in cyanobacteria

Ohmori, Masayuki; Okamoto, Shinobu

doi:10.1039/b401623h

Cited by 52 publications

(46 citation statements)

References 97 publications

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“…Two paralogues, aphA and aphB, exist in Anabaena sp. strain PCC 7120 as well as in the two other heterocystous strains (101). Besides these four strains, only C. watsonii has a Cph1-like protein, as well as a paralogue that does not group with AphB.…”

Section: Subtilis)mentioning

confidence: 99%

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Cyanobacterial Two-Component Proteins: Structure,Diversity, Distribution, andEvolution

Ashby

Houmard

2006

Microbiol Mol Biol Rev

123

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SUMMARY A survey of the already characterized and potential two-component protein sequences that exist in the nine complete and seven partially annotated cyanobacterial genome sequences available (as of May 2005) showed that the cyanobacteria possess a much larger repertoire of such proteins than most other bacteria. By analysis of the domain structure of the 1,171 potential histidine kinases, response regulators, and hybrid kinases, many various arrangements of about thirty different modules could be distinguished. The number of two-component proteins is related in part to genome size but also to the variety of physiological properties and ecophysiologies of the different strains. Groups of orthologues were defined, only a few of which have representatives with known physiological functions. Based on comparisons with the proposed phylogenetic relationships between the strains, the orthology groups show that (i) a few genes, some of them clustered on the genome, have been conserved by all species, suggesting their very ancient origin and an essential role for the corresponding proteins, and (ii) duplications, fusions, gene losses, insertions, and deletions, as well as domain shuffling, occurred during evolution, leading to the extant repertoire. These mechanisms are put in perspective with the different genetic properties that cyanobacteria have to achieve genome plasticity. This review is designed to serve as a basis for orienting further research aimed at defining the most ancient regulatory mechanisms and understanding how evolution worked to select and keep the most appropriate systems for cyanobacteria to develop in the quite different environments that they have successfully colonized.

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Section: Subtilis)mentioning

confidence: 99%

“…CyaC is one of the six AC/GC purine nucleotide cyclases found in Anabaena sp. strain PCC 7120 (101). Because a cyaC mutant has a very low cAMP level, it has been proposed to be responsible for the maintenance of the steady-state level of cellular cAMP.…”

Section: Hybrid Kinasesmentioning

confidence: 99%

Cyanobacterial Two-Component Proteins: Structure,Diversity, Distribution, andEvolution

Ashby

Houmard

2006

Microbiol Mol Biol Rev

123

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“…A more recent comprehensive analysis of the effect of cGMP on gene expression in plants, using DNA microarrays, revealed 1000 genes that responded (>2-fold) to 10 lM of membrane-permeable cGMP within 2 h [7]. Interestingly, cNMPs mediate phytochrome signaling in the cyanobacterium Anabaena [8], and also participate in photo transduction in vertebrate retina. Hence, the role of cNMPs in photo transduction may be evolutionarily conserved from prokaryotes through plants to mammals.…”

Section: Physiological Roles Of Cnmps In Plantsmentioning

confidence: 99%

Cyclic nucleotide‐gated channels in plants

Kaplan¹,

2007

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Until recently the role of cyclic nucleotide monophosphates (cNMPs) in plants had been controversial, with equivocal data about their concentrations, biosynthetic and degrading enzymes, and cellular targets. This review discusses the current knowledge in this field, with focus on the largest class of cNMP targets in plant cells, the cyclic nucleotide-gated channels (CNGCs). Aspects of structure and function are addressed, with reference to studies in heterologous systems and in planta. The picture emerging, albeit still fragmented, is of proteins with diverse functions in the control of ion homeostasis, development, and defense against biotic and abiotic threats.

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“…Among them: cyanobacterium Anabaena -720 nm (Ohmori and Okamoto, 2004), green alga Mesotaenium caldariorum -722 nm (Kidd and Lagarias, 1990), green alga Mougeotia scalaris -720 nm (Jorissen at al., 2002), liverwort Sphaerocarpos -720 nm (Taylor and Bonner, 1967), moss Ceratodon purpureus -722 nm (Lamparter et al, 1995), and slime mould Physarum polycephalum -720 nm (Hato et al, 1976). These values differ significantly from 730 nm that are given broadly in the literature for Angiospermae in LFR responses.…”

Section: Discussionmentioning

confidence: 99%

Atmospheric moisture controls far-red irradiation: a probable impact on the phytochrome

Doroszewski

Górski

Kozyra

2015

International Agrophysics

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A b s t r a c t. It is commonly accepted that an important role of the phytochrome lies in signalling the proximity of competing plants. However, not all photoresponses conveyed by the phytochrome can be explained by the competition only. Because a better description of the natural variability of solar spectral irradiance is necessary to recognize the other roles of the phytochrome, long-lasting spectroradiometric measurements have been performed. Special attention has been paid to the relations between the far-red and red bands of the solar spectrum, which have an impact on the phytochrome. The effect of atmospheric moisture on far-red irradiance (attenuated in the 720 nm band of water vapour absorption) is described. The far-red irradiance, active in the 'high irradiance response' of the phytochrome, and the red/ far-red ratio, important for the 'low fluence response', may vary very strongly relative to the atmospheric moisture. Together with other facts known from photophysiology, the results of the measurements enabled us to formulate a thesis that the phytochrome monitors the amount of water vapour and opens appropriate metabolic pathways to cope with the danger of drought. The recognition of this novel role of the phytochrome might broaden the knowledge in the area of plant photomorphogenesis and ecology.

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Photoresponsive cAMP signal transduction in cyanobacteria

Cited by 52 publications

References 97 publications

Cyanobacterial Two-Component Proteins: Structure,Diversity, Distribution, andEvolution

Cyanobacterial Two-Component Proteins: Structure,Diversity, Distribution, andEvolution

Cyclic nucleotide‐gated channels in plants

Atmospheric moisture controls far-red irradiation: a probable impact on the phytochrome

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