Reductive evolution suggested from the complete genome sequence of a plant-pathogenic phytoplasma
- K. Oshima, S. Kakizawa, S. Namba
- BiologyNature Genetics
- 2004
The phytoplasma genome encodes even fewer metabolic functions than do mycoplasma genomes, and lacks the pentose phosphate cycle and ATP-synthase subunits, which are thought to be essential for life.
Phytoplasmas: bacteria that manipulate plants and insects.
- S. Hogenhout, K. Oshima, E. Ammar, S. Kakizawa, Heather N. Kingdom, S. Namba
- Biology, MedicineMolecular plant pathology
- 1 July 2008
Phytoplasma can increase fecundity and survival of insect vectors, and may influence flight behaviour and plant host preference of their insect hosts, but generally do not negatively affect the fitness of their major insect vectors.
A unique virulence factor for proliferation and dwarfism in plants identified from a phytopathogenic bacterium
- A. Hoshi, K. Oshima, S. Namba
- Environmental ScienceProceedings of the National Academy of Sciences
- 14 April 2009
It is shown that a single virulence factor, tengu-su inducer (TENGU), induces witches' broom and dwarfism and is a small secreted protein of the plant-pathogenic bacterium, phytoplasma.
Diversity of Bacterial Endosymbionts Associated with Macrosteles Leafhoppers Vectoring Phytopathogenic Phytoplasmas
- Y. Ishii, Yu Matsuura, S. Kakizawa, N. Nikoh, T. Fukatsu
- BiologyApplied and Environmental Microbiology
- 14 June 2013
Two genetically distinct phytoplasmas, namely, “Candidatus Phytoplasma asteris,” associated with aster yellows and related plant diseases, and “candidatusPhy toplasma oryzae,’ associated with rice yellow dwarf disease, were identified from the leafhoppers.
Interaction between the membrane protein of a pathogen and insect microfilament complex determines insect-vector specificity.
- Shiho Suzuki, K. Oshima, S. Namba
- BiologyProceedings of the National Academy of Sciences…
- 14 March 2006
This study focused on an abundant cell-surface membrane protein of the phytoplasma named antigenic membrane protein (Amp), which is not homologous with any reported functional protein, and reported interactions between pathogens and mammalian microfilaments between a bacterial surface protein and a host microfilament in insect cells.
"Candidatus Phytoplasma oryzae", a novel phytoplasma taxon associated with rice yellow dwarf disease.
- H. Jung, T. Sawayanagi, S. Namba
- Biology, MedicineInternational Journal of Systematic and…
- 1 November 2003
In addition to rice yellow dwarf (RYD) phytoplasma, several phytoplasmas infect gramineous plants, including rice orange leaf, bermuda grass white leaf, brachiaria grass white leaf and sugarcane…
'Candidatus Phytoplasma castaneae', a novel phytoplasma taxon associated with chestnut witches' broom disease.
- H. Jung, T. Sawayanagi, S. Namba
- Medicine, BiologyInternational Journal of Systematic and…
- 1 September 2002
In Korea, Japanese chestnut trees showing symptoms indicative of witches' broom disease, including abnormally small leaves and yellowing of young leaves, were examined, indicating that a phytoplasma was the causal agent of the chestnut Witches' broom (CnWB) disease.
Diversity and functional importance of phytoplasma membrane proteins.
- S. Kakizawa, K. Oshima, S. Namba
- BiologyTrends in Microbiology
- 1 June 2006
Dramatic Transcriptional Changes in an Intracellular Parasite Enable Host Switching between Plant and Insect
It is reported that phytoplasmas dramatically alter their gene expression in response to “host switching” between plant and insect hosts, and the elucidation of this mechanism may contribute to the development of novel pest controls.
Positive Selection Acting on a Surface Membrane Protein of the Plant-Pathogenic Phytoplasmas
- S. Kakizawa, K. Oshima, S. Namba
- BiologyJournal of Bacteriology
- 1 May 2006
This study shows a strong positive selection on the phytoplasma antigenic membrane protein (Amp), implying an important biological role for Amp in host-bacterium interactions.
...
...