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http://purl.uniprot.org/citations/11725952http://www.w3.org/1999/02/22-rdf-syntax-ns#typehttp://purl.uniprot.org/core/Journal_Citation
http://purl.uniprot.org/citations/11725952http://www.w3.org/1999/02/22-rdf-syntax-ns#typehttp://purl.uniprot.org/core/Journal_Citation
http://purl.uniprot.org/citations/11725952http://www.w3.org/2000/01/rdf-schema#comment"Haemoglobin genes have been found in a number of plant species, but the number of genes known has been too small to allow effective evolutionary inferences. We present nine new non-symbiotic haemoglobin sequences from a range of plants, including class 1 haemoglobins from cotton, Citrus and tomato, class 2 haemoglobins from cotton, tomato, sugar beet and canola and two haemoglobins from the non-vascular plants, Marchantia polymorpha (a liverwort) and Physcomitrella patens (a moss). Our molecular phylogenetic analysis of all currently known non-symbiotic haemoglobin genes and a selection of symbiotic haemoglobins have confirmed the existence of two distinct classes of haemoglobin genes in the dicots. It is likely that all dicots have both class 1 and class 2 non-symbiotic haemoglobin genes whereas in monocots we have detected only class 1 genes. The symbiotic haemoglobins from legumes and Casuarina are related to the class 2 non-symbiotic haemoglobins, whilst the symbiotic haemoglobin from Parasponia groups with the class 1 non-symbiotic genes. Probably, there have been two independent recruitments of symbiotic haemoglobins. Although the functions of the two non-symbiotic haemoglobins remain unknown, their patterns of expression within plants suggest different functions. We examined the expression in transgenic plants of the two non-symbiotic haemoglobins from Arabidopsis using promoter fusions to a GUS reporter gene. The Arabidopsis GLB1 and GLB2 genes are likely to be functionally distinct. The class 2 haemoglobin gene (GLB2) is expressed in the roots, leaves and inflorescence and can be induced in young plants by cytokinin treatment in contrast to the class 1 gene (GLB1) which is active in germinating seedlings and can be induced by hypoxia and increased sucrose supply, but not by cytokinin treatment."xsd:string
http://purl.uniprot.org/citations/11725952http://purl.org/dc/terms/identifier"doi:10.1023/a:1012440926982"xsd:string
http://purl.uniprot.org/citations/11725952http://purl.org/dc/terms/identifier"doi:10.1023/a:1012440926982"xsd:string
http://purl.uniprot.org/citations/11725952http://purl.org/dc/terms/identifier"doi:10.1023/A:1012440926982"xsd:string
http://purl.uniprot.org/citations/11725952http://purl.uniprot.org/core/author"Dennis E.S."xsd:string
http://purl.uniprot.org/citations/11725952http://purl.uniprot.org/core/author"Dennis E.S."xsd:string
http://purl.uniprot.org/citations/11725952http://purl.uniprot.org/core/author"Peacock W.J."xsd:string
http://purl.uniprot.org/citations/11725952http://purl.uniprot.org/core/author"Peacock W.J."xsd:string
http://purl.uniprot.org/citations/11725952http://purl.uniprot.org/core/author"Llewellyn D.J."xsd:string
http://purl.uniprot.org/citations/11725952http://purl.uniprot.org/core/author"Llewellyn D.J."xsd:string
http://purl.uniprot.org/citations/11725952http://purl.uniprot.org/core/author"Trevaskis B."xsd:string
http://purl.uniprot.org/citations/11725952http://purl.uniprot.org/core/author"Trevaskis B."xsd:string
http://purl.uniprot.org/citations/11725952http://purl.uniprot.org/core/author"Hunt P.W."xsd:string
http://purl.uniprot.org/citations/11725952http://purl.uniprot.org/core/author"Hunt P.W."xsd:string
http://purl.uniprot.org/citations/11725952http://purl.uniprot.org/core/author"Watts R.A."xsd:string
http://purl.uniprot.org/citations/11725952http://purl.uniprot.org/core/author"Watts R.A."xsd:string
http://purl.uniprot.org/citations/11725952http://purl.uniprot.org/core/author"Burnell J."xsd:string
http://purl.uniprot.org/citations/11725952http://purl.uniprot.org/core/author"Burnell J."xsd:string
http://purl.uniprot.org/citations/11725952http://purl.uniprot.org/core/date"2001"xsd:gYear
http://purl.uniprot.org/citations/11725952http://purl.uniprot.org/core/date"2001"xsd:gYear
http://purl.uniprot.org/citations/11725952http://purl.uniprot.org/core/name"Plant Mol. Biol."xsd:string
http://purl.uniprot.org/citations/11725952http://purl.uniprot.org/core/name"Plant Mol. Biol."xsd:string
http://purl.uniprot.org/citations/11725952http://purl.uniprot.org/core/pages"677-692"xsd:string