ENDOSYMBIONTS (BUCHNERA) FROM THE APHIDS SCHIZAPHIS-GRAMINUM AND DIURAPHIS-NOXIA HAVE DIFFERENT COPY NUMBERS OF THE PLASMID CONTAINING THE LEUCINE BIOSYNTHETIC GENES

Authors
THAO ML BAUMANN L BAUMANN P MORAN NA
Citation
Ml. Thao et al., ENDOSYMBIONTS (BUCHNERA) FROM THE APHIDS SCHIZAPHIS-GRAMINUM AND DIURAPHIS-NOXIA HAVE DIFFERENT COPY NUMBERS OF THE PLASMID CONTAINING THE LEUCINE BIOSYNTHETIC GENES, Current microbiology, 36(4), 1998, pp. 238-240
Citations number
12
Categorie Soggetti
Microbiology
Journal title
Current microbiology → ACNP
ISSN journal
03438651
Volume
36
Issue
4
Year of publication
1998
Pages
238 - 240
Database
ISI
SICI code
0343-8651(1998)36:4<238:E(FTAS>2.0.ZU;2-O
Abstract
The prokaryotic endosymbiont (Buchnera) of the aphid Schizaphis gramin um contains 24 copies of a plasmid that has genes encoding enzymes of the leucine biosynthetic pathway while the endosymbiont of the related aphid Diuraphis noxia has only one copy of this plasmid. These result s, in conjunction with similar results for the trpEG-containing plasmi ds, suggest that D. noxia has a reduced demand for endosymbiont-derive d essential amino acids.