By Masao Goto

Meant as a textual content for plant bacteriology classes and as a reference for plant pathologists in agricultural extension companies and experimental stations, basics of Bacterial Plant Pathology provides present info on bacterial morphology, taxonomy, genetics, and ecology. prognosis, disorder administration, and the molecular foundation of host-pathogen interactions are tested. The ebook is definitely illustrated, comprises either topic and taxonomic indexes, and gives feedback for the extra examining.

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Aerobic. Chemoorganotrophic. Some nonplant pathogenic strains show lithoautotrophic growth or denitrification of nitrate. Oxidative metabolism with oxygen as the terminal electron acceptor. Two hydroxylated fatty acid, 3-hydroxyoctanoic acid, and 3-hydroxydecanoic acid are always present; 2-hydroxylated fatty acids are absent, and a cyclopropane-substituted fatty acid is present in most of the strains. T h e mol% of G + C of the DNA is 6 2 - 6 6 . T h e type species is Acidovorax facilis (Schatz and Bovell 1952) Willems, Falsen, Pot, Jantzen, Hoste, Vandamme, Gillis, Kersters, and De Ley 1990.

7 International Code of Nomenclature of Bacteria The International Code of Nomenclature of Bacteria was revised in 1976 from the previous edition, which originated in the International Botanical Code dating from May 1, 1753. T h e most important changes in the new code are described below. 1 PRIORITY T h e priority of bacterial names was established as ofJanuary 1, 1980, under rule 24 of the new code. For names published prior to January 1, 1980, names were retained only for those listed in the Approved Lists of Bacterial Names and those agreed upon as to the validity for their retention.

The latter in particular is considered to be the most useful chronometer of the evolution of prokaryotes at the level above species. The use of rRNA as the criterion of phylogenetic systematics is based on (1) the ribosome is of ancient origin, (2) it is universally distributed and functionally equivalent among prokaryotes, (3) its changes are not extensive, and the primary structures are well conserved, (4) the presence of extreme conservation and of variability makes it useful in analysis of distant as well as close relationships, and (5) the molecule of 16S-rRNA is large enough for statistical analysis.

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