Linked Life Data

11551991

Source:http://linkedlifedata.com/resource/pubmed/id/11551991

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
Pt 17
pubmed:dateCreated
2001-9-11
pubmed:abstractText
The black-bean aphid Aphis fabae bears populations of coccoid symbiotic bacteria Buchnera spp. at 2.0-3.2 x 10(7)cells mg(-1)aphid mass and rod-shaped secondary symbionts of uncertain taxonomic affiliation at 0.1-0.6 x 10(7)cells mg(-1)aphid mass. Buchnera provides essential amino acids, supplementing the poor supply in the aphid diet of plant phloem sap. Comparison of the performance of A. fabae containing and experimentally deprived of their bacteria showed that the bacteria caused increased larval mass of aphids reared on Chenopodium album and Papaver dubium plants, but not when reared on Lamium purpureum. In the aphids reared on L. purpureum, the density of the bacteria, especially the secondary symbionts, was significantly elevated, and bacterial-mediated production of the essential amino acid threonine was reduced, even though the essential amino acid content of phloem exudates from L. purpureum had a low threonine content. It is proposed that the shortfall in threonine, possibly compounded by the high density of secondary symbionts, may contribute to the poor performance of the aphids on L. purpureum. This study offers the first evidence to suggest plant-mediated interference with the nutritional function of symbiotic bacteria in any phytophagous insect.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Sep
pubmed:issn
0022-0949
pubmed:author
pubmed:issnType
Print
pubmed:volume
204
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
3027-38
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
2001
pubmed:articleTitle
The impact of host plant on the abundance and function of symbiotic bacteria in an aphid.
pubmed:affiliation
Department of Biology, University of York, York, YO10 5YW, UK. T.L.Wilkinson@bham.ac.uk
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't