Eukaryotic sample for Planococcus citri
Planococcus citri
The smallest bacterial genome yet reported is from Tremblaya princeps, a symbiont of the mealybug Planococcus citri (PCIT). Tremblaya PCIT is unusual not only for having a 139 kb genome, but for possessing a bacterial endosymbiont of its own, Moranella endobia. Here, using a combination of genome and transcriptome sequencing, we show that the extreme genomic degeneracy of Tremblaya PCIT is likely due to the presence of Moranella as an endosymbiont, and that horizontal gene transfer from Tremblaya PCIT to the insect host has not been a factor enabling this reductive process. We find at least 22 expressed horizontally transferred genes from other bacterial lineages on the Pl. citri genome that appear to complement missing symbiont genes. Our data show that the functioning of this complex symbiosis is dependent on genes from at least six distinct groups of organisms, including several horizontally transferred genes from a diverse suite of bacteria to the host insect genome.
estimated_size
362000000
ploidy
diploid
lat_lon
51.53 N 0.08 W
biome
sap-feeding insect
collection_date
2012-01-01
isolate
Logan UT, USA, and London, England
feature
plant
project_name
Draft genome of Planococcus citri
geo_loc_name
United Kingdom: London
investigation_type
eukaryote
material
plant
num_replicons
1
is_reference
0
isol_growth_condt
from plants
env_package
MIGS/MIMS/MIMARKS.miscellaneous
propagation
sexual
BioSampleModel
MIGS.eu