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Origins of Plastids - Symbiogenesis, Prochlorophytes and the Origins of Chloroplasts (Hardcover, 1993 ed.): Ralph A. Lewin Origins of Plastids - Symbiogenesis, Prochlorophytes and the Origins of Chloroplasts (Hardcover, 1993 ed.)
Ralph A. Lewin
R5,815 Discovery Miles 58 150 Ships in 10 - 15 working days

Origins of Plastids looks at symbiosis and symbiogenesis as a mechanism of evolution. This theory of endosymbiotic evolution postulates that photosynthetic prokaryotes living as endosymbionts within eukaryotic cells gradually evolved into the organelle structures called chloroplasts. The theory is controversial but has been strongly advocated by Lynn Margulis. Based on a colloquium held at the Bodega Bay Marine Laboratory of the University of California at Davis, Origins of Plastids reviews recent data on this most basic problem in plant evolution. In it, leading researchers in the field apply the theory of endosymbiotic evolution to plastid origins, producing an important new reference work for both professionals and graduates interested in the origins of life, the origins of the eukaryotic cell and its organelles, and the evolution of the higher plants in general. Origins of Plastids represents the state-of-the-art in its field. It should find a place on the bookshelves of people interested in microbiology, plant science, phycology, cell biology, and evolution.

Origins of Plastids - Symbiogenesis, Prochlorophytes and the Origins of Chloroplasts (Paperback, Softcover reprint of the... Origins of Plastids - Symbiogenesis, Prochlorophytes and the Origins of Chloroplasts (Paperback, Softcover reprint of the original 1st ed. 1993)
Ralph A. Lewin
R5,612 Discovery Miles 56 120 Ships in 10 - 15 working days

Origins of Plastids looks at symbiosis and symbiogenesis as a mechanism of evolution. This theory of endosymbiotic evolution postulates that photosynthetic prokaryotes living as endosymbionts within eukaryotic cells gradually evolved into the organelle structures called chloroplasts. The theory is controversial but has been strongly advocated by Lynn Margulis. Based on a colloquium held at the Bodega Bay Marine Laboratory of the University of California at Davis, Origins of Plastids reviews recent data on this most basic problem in plant evolution. In it, leading researchers in the field apply the theory of endosymbiotic evolution to plastid origins, producing an important new reference work for both professionals and graduates interested in the origins of life, the origins of the eukaryotic cell and its organelles, and the evolution of the higher plants in general. Origins of Plastids represents the state-of-the-art in its field. It should find a place on the bookshelves of people interested in microbiology, plant science, phycology, cell biology, and evolution.

Prochloron: A Microbial Enigma (Paperback, Softcover reprint of the original 1st ed. 1989): Ralph A. Lewin Prochloron: A Microbial Enigma (Paperback, Softcover reprint of the original 1st ed. 1989)
Ralph A. Lewin
R1,485 Discovery Miles 14 850 Ships in 10 - 15 working days

Ralph A. LewiQand Lanna Cheng In physics, the discovery of new (more properly, hitherto undetected) particles has often resulted from a search: like the discovery of America, their existence had been postulated but their actual existence awaited confirmation. In biology, new discoveries are rarely made in this way. The existence of an alga like Prochloron, as a putative ancestor of chloro plasts, had been postulated, but in fact its discovery was a consequence of fortuitous events. Green algal symbionts in didemnid ascidians had been known for decades to a few marine zoologists who had worked in coral reef areas, but nobody had bothered much about them. When we happened to find them, under boulders on a seashore in Baja California, Mexico, where we were taking part in a student expedition, we didn't bother much either at first, though they worried us a little. With our portable microscope we could see no nuclei in the cells, which, according to the dogma accepted at the time, indicated that they were blue-green algae-yet they didn't look blue-green. They were leaf-green, like green algae and higher plants. We made desultory attempts to grow them in culture, in variously enriched seawater media, but failed. (This proved to be a frustrating experience, all too frequently repeated on subsequent expeditions. ) We collected enough for electron microscopy, though, and transmission electron microscopy (TEM) studies indicated that the cells were unequivocally prokaryotic."

Merde - Excursions in Scientific, Cultural, and Socio-Historical Coprology (Paperback): Ralph A. Lewin Merde - Excursions in Scientific, Cultural, and Socio-Historical Coprology (Paperback)
Ralph A. Lewin
R375 Discovery Miles 3 750 Ships in 10 - 15 working days

Merde is an unusual (very unusual) and witty investigation into a subject you may always have wondered about--but didn't know quite what to ask.
        
History, biology, anthropology, culture, animal behavior--all of these are the real subjects of Merde. Why can some animals do it on the run, and others can't? Why does camel dung make good fires? What are the fascinating stories of the dung beetles?
        
Myths and legends, physical features, health and disease, uses for construction and as fertilizers--even nutritional values!--Ralph Lewin writes about them all in the most ingratiating and sophisticated and yet scientific way. Merde is also full of personal adventures and observations, as well as anecdotes and examples.
        
The scattered literature on this subject is voluminous, but until now no one has perused and compiled it all and given it a personal touch, so to speak. It will be hard not to talk about this treasure trove of a book after you've finished it--or perhaps even when you're in the middle of it.


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