Linked Life Data

11683273

Source:http://linkedlifedata.com/resource/pubmed/id/11683273

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
2001-10-30
pubmed:abstractText
We investigated how over-expression of a cDNA for human ornithine decarboxylase (odc) affects the polyamine pools in transgenic rice. We further investigated tissue-specific expression patterns and product accumulation levels of the transgene driven by either constitutive or seed-specific promoters. Our results indicate that: (1) whereas the expression of a heterologous arginine decarboxylase (adc) cDNA in rice resulted in increased putrescine and spermine levels only in seeds, plants engineered to express odc cDNA exhibited significant changes in the levels of all three major polyamines in seeds and also in vegetative tissues (leaves and roots); (2) there was no linear correlation between odc mRNA levels, ODC enzyme activity and polyamine accumulation, suggesting that control of the polyamine pathway in plants is more complex than in mammalian systems; (3) ODC activity and polyamine changes varied in different tissues, indicating that the pathway is regulated in a tissue-specific manner. Our results suggest that ODC rather than ADC is responsible for the regulation of putrescine synthesis in plants.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Oct
pubmed:issn
1617-4615
pubmed:author
pubmed:issnType
Print
pubmed:volume
266
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
303-12
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
2001
pubmed:articleTitle
Over-expression of a cDNA for human ornithine decarboxylase in transgenic rice plants alters the polyamine pool in a tissue-specific manner.
pubmed:affiliation
Molecular Biotechnology Unit, John Innes Centre, Norwich Research Park, UK.
pubmed:publicationType
Journal Article