Showing papers by "John B. Waterbury published in 1981"
TL;DR: The existence of a symbiotic association between vestimentiferan tube worms from deep-sea hydrothermal vents and chemoautotrophic sulfur-oxidizing prokaryotes, based on histological and enzymatic evidence, is suggested.
Abstract: The existence of a symbiotic association between vestimentiferan tube worms from deep-sea hydrothermal vents and chemoautotrophic sulfur-oxidizing prokaryotes, based on histological and enzymatic evidence, is suggested.
631 citations
01 Jan 1981
TL;DR: The biological oxidations of ammonia to nitrite and nitrite to nitrate, collectively referred to as nitrification, are carried out in nature by two physiological groups of Gram-negative, chemolithotrophic bacteria.
Abstract: The biological oxidations of ammonia to nitrite and nitrite to nitrate, collectively referred to as nitrification, are carried out in nature by two physiological groups of Gram-negative, chemolithotrophic bacteria. The organisms in both groups fix carbon dioxide via the Calvin cycle (Campbell, Hellebust, and Watson, 1966) for their major source of cell carbon and derive their energy and reducing power either from the oxidation of ammonia (ammonia-oxidizing bacteria) or nitrite (nitrite-oxidizing bacteria). With the exception of a few strains of Nitrobacter winogradskyi, which can be grown chemoheterotro-phically, the nitrifying bacteria are obligate chemo-lithotrophs.
131 citations
01 Jan 1981
TL;DR: Oxygenic photosynthesis is the dominant mode of nutrition of cyanobacteria, and their ecological diversity is remarkable; they occupy a very wide range of illuminated ecological niches in terrestrial, marine, and freshwater environments.
Abstract: Oxygenic photosynthesis is the dominant mode of nutrition of cyanobacteria. Despite this seeming metabolic uniformity, their ecological diversity is remarkable; they occupy a very wide range of illuminated ecological niches in terrestrial, marine, and freshwater environments.
128 citations
01 Jan 1981
TL;DR: The cyanobacteria of marine and hypersaline environments will be discussed seChapautely; the physiological properties which distinguish these cyanob bacteria from others and the range of taxonomic diversity encountered in saline environmentswill be indicated.
Abstract: In principle, the isolation and purification of cyanobacteria from saline environments does not differ from that for other groups of cyanobacteria (see this Handbook, Chapter 8 for general discussion and Table 1 in this chapter for specific media for marine and halophilic forms). In this chapter, the cyanobacteria of marine and hypersaline environments will be discussed seChapautely; the physiological properties which distinguish these cyanobacteria from others and the range of taxonomic diversity encountered in saline environments will be indicated.
88 citations
01 Jan 1981
TL;DR: The necessarily provisional goal of this chapter is to redefine genera in such a way that simple and clear-cut assignments may be made for cyanobacterial pure cultures.
Abstract: Phycological observations on field materials have led to a remarkable nomenclatural hypertrophy. About 170 genera and over 1,000 species have been described by the standard taxonomic treatment of Geitler (1932), now almost 50 years old. This field-based system of classification leads to many difficulties and ambiguities when applied to pure cultures. The necessarily provisional goal of this chapter is to redefine genera in such a way that simple and clear-cut assignments may be made for cyanobacterial pure cultures. Our approach has been conservative: insofar as possible, we have attempted to maintain the classical generic nomenclature and definitions (Bourrelly, 1970; Desikachary, 1959; Geitler, 1932).
36 citations