Linked Life Data

1124432

Source:http://linkedlifedata.com/resource/pubmed/id/1124432

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
1975-7-3
pubmed:abstractText
We conducted comparative biochemical and electron-microscopic studies of several types of plastome and nuclear mutants of Antirrhinum majus and Pelargonium zonale. It was shown that specific blocking of the photosynthetic reaction occurs in plastome mutants of A. majus; Photosystem II was found to be damaged in the en:alba-1 mutant and photo-system I was affected in the en:viridis-1 mutant. The plastid mutations in these mutants caused loss of certain soluble lamellar proteins and pigment--protein complexes or a reduction in their content, which led to disappearance of photosynthetic activity. When the content of high-molecular ribosomal RNA in the leaves of normal and mutant P. zonale plants was compared, the normal plants were found to have four types of RNA: two types of cytoplasmic-ribosome RNA and two types of plastid-ribosome RNA. No plastid-ribosome RNA was detected in the mutant. These results were confirmed by electron-microscopic examination: no ribosomes were detected in the mutant plastids. Thus, use of plastome mutants made it possible to establish that the genetic information concentrated in the plastid DNA controls formation of ribosomes and lamellae in the chloroplasts and thus affects chloroplast photosynthetic function.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
May
pubmed:issn
0049-173X
pubmed:author
pubmed:issnType
Print
pubmed:volume
5
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
236-44
pubmed:dateRevised
2005-11-17
pubmed:meshHeading
pubmed:year
1975
pubmed:articleTitle
Use of plastome and nuclear mutants of higher plants to study the genetic control of plastid formation and function.
pubmed:publicationType
Journal Article