The type IV secretion system of Sinorhizobium meliloti strain 1021 is required for conjugation but not for intracellular symbiosis.
The type IV secretion system (T4SS) of the plant intracellular symbiont Sinorhizobium meliloti 1021 is required for conjugal transfer of DNA. However, it is not required for host invasion and persistence, unlike the T4SSs of closely related mammalian intracellular pathogens. A comparison of the requirement for a bacterial T4SS in plant versus animal host invasion suggests an important difference in the intracellular niches occupied by these bacteria.
Jones
Kathryn M
KM
Department of Biology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.
Lloret
Javier
J
Daniele
Joseph R
JR
Walker
Graham C
GC
D000818:Animals; D001426:Bacterial Proteins / Q000502:physiology*; D003227:Conjugation, Genetic; D010944:Plants / Q000382:microbiology; D016962:Sinorhizobium meliloti / Q000235:genetics / Q000378:metabolism* / Q000472:pathogenicity; D013559:Symbiosis
D001426:Bacterial Proteins