Diversity and geographic distribution of secondary endosymbiotic bacteria in natural populations of the pea aphid, Acyrthosiphon pisum
- T. Tsuchida, R. Koga, H. Shibao, Tadao Matsumoto, T. Fukatsu
- Environmental ScienceMolecular Ecology
- 1 October 2002
It was demonstrated that different S‐symbionts coexist commonly in the same local populations, but double infections with two S‐ SYMBionts were rarely detected, and the distribution of PAUS infection might be related to host plant species, temperature and precipitation.
Major alteration of the expression site of endogenous cellulases in members of an apical termite lineage
- G. Tokuda, N. Lo, Hirofumi Watanabe, Gaku Arakawa, Tadao Matsumoto, H. Noda
- BiologyMolecular Ecology
- 24 August 2004
A comparative study of cellulase expression in various termitid and flagellate‐harbouring species, using enzyme assays and reverse transcription polymerase chain reactions found taxa from phylogenetically basal lineages were consistently found to express endogenous genes specifically in the salivary glands, whilst those from a relatively apical lineage containing termitids expressed cellulases solely in the midgut.
Cellulose Digestion in the Wood-Eating Higher Termite, Nasutitermes takasagoensis (Shiraki): Distribution of Cellulases and Properties of Endo-β-1,4-gIucanase
- G. Tokuda, Hirofumi Watanabe, Tadao Matsumoto, H. Noda
- Biology, MedicineZoological Science
- 1 February 1997
The activity and stability on pH and temperature of the purified endo-β-1,4-glucanase are prominent among those from various organisms.
Phylogenetic Diversity of Symbiotic Methanogens Living in the Hindgut of the Lower Termite Reticulitermes speratus Analyzed by PCR and In Situ Hybridization
- N. Shinzato, Tadao Matsumoto, I. Yamaoka, T. Oshima, A. Yamagishi
- BiologyApplied and Environmental Microbiology
- 1 February 1999
ABSTRACT A phylogenetic analysis of the sequences of 60 clones of archaeal small-subunit rRNA genes amplified from the termiteReticulitermes speratus revealed that most of them (56 clones) clustered…
Phylogenetic Comparison of Endosymbionts with Their Host Ants Based on Molecular Evidence
- S. Sameshima, E. Hasegawa, O. Kitade, N. Minaka, Tadao Matsumoto
- Biology
- 1 December 1999
The results suggest that the endosymbionts of ants have plural origins, and that in the Camponotini, ancestral symbionts have coevolved with their host ants, which are so divergent to several genera as to construct one tribe.
The role of termites in an equatorial rain forest ecosystem of West Malaysia
- Tadao Matsumoto
- Environmental ScienceOecologia
- 1 June 1976
It was concluded that the termites played a very important role in the organic matter decomposition cycle of Pasoh Forest and their nitrogen metabolism was similar to what has been found in other insects.
Molecular Phylogeny of Orthopteroid Insects based on the Mitochondrial Cytochrome Oxidase II Gene
- K. Maekawa, O. Kitade, Tadao Matsumoto
- Biology
- 1 February 1999
Phylogenetic trees using first and second codon positions based on both the neighbor-joining method and parsimony analysis indicated that the topology was nearly identical to each other, and inferred trees showed that grylloblattids were not a primitive group, but closely related to the Dictyoptera.
Genome size of termites (Insecta, Dictyoptera, Isoptera) and wood roaches (Insecta, Dictyoptera, Cryptocercidae)
- S. Koshikawa, S. Miyazaki, R. Cornette, Tadao Matsumoto, T. Miura
- BiologyDie Naturwissenschaften
- 31 May 2008
The present results raise the possibility that genome size is influenced by selective pressures on traits associated with the evolution of sociality in dictyopteran species.
Molecular phylogeny of cockroaches (Blattaria) based on mitochondrial COII gene sequences
- K. Maekawa, Tadao Matsumoto
- Biology
- 1 October 2000
Phylogenetic relationships among five cockroach families using seventeen species, were estimated based on the DNA sequences of the mitochondrial cytochrome oxidase subunit II (COII) gene and indicated that Polyphagidae and Cryptocercidae are closely related to each other, and that these two groups are a sister group to the remainingcockroach families.
Wing disc development during caste differentiation in the ant Pheidole megacephala (Hymenoptera: Formicidae)
- S. Sameshima, T. Miura, Tadao Matsumoto
- BiologyEvolution & Development
- 1 September 2004
It is suggested that each worker caste shows a different degeneration process to express the wingless character and that apoptotic degeneration has been adopted in association with the evolution of worker dimorphism.
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