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《Biodemography and social biology》2013,59(3-4):192-193
Secrets of the Savanna: Twenty‐Three Years in the African Wilderness Unraveling the Mysteries of Elephants and People. Mark and Delia Owens. Houghton Mifflin Company, 2006 相似文献
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Kishinevsky B. D. Nandasena K. G. Yates R. J. Nemas C. Howieson J.G. 《Plant and Soil》2003,251(1):143-153
Cultural, physiological and biochemical properties of 18 strains of rhizobia isolated from root nodules of the forage legume H. spinosissimum were compared with those of rhizobia from the related species H. coronarium (15 strains) and H. flexuosum (four strains). On the basis of 43 characteristics the 37 strains of Hedysarum rhizobia could be divided into two groups by numerical analysis. The H. spinosissimum rhizobia formed the first group and the second group comprised the strains from H. coronarium and H. flexuosum. The reference Rhizobium leguminosarum bv. viceae strain 250A was clustered with the rhizobia from H. coronarium and H. flexuosum. By contrast Bradyrhizobium sp. (Arachis) reference strain 280A was not clustered with any of the strains tested, indicating that the H. spinosissimum rhizobia differ from both Rhizobium and Bradyrhizobium. Serological data also discriminate between H. spinosissimum and H. coronariumrhizobia but not between the latter and H. flexuosum strains. The strains tested exhibit a high degree of specificity for nodulation and nitrogen fixation. We also determined the16SrRNA gene sequence of H. spinosissimum rhizobia (four strains), H. coronarium (two strains) and H. flexuosum (two strains) and found that the four H. spinosissimum isolates share a 98% identity among each other in this region but they showed less than 92% identity to the H. coronarium and H. flexuosum isolates. The H. spinosissimum isolates were closely related to both Mesorhizobium loti and M. ciceri, sharing 97% identity with each species. 相似文献
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Heterophyes heterophyes is reported for the first time from the snail host Pirenella conica in Greece. H. aequalis and H. dispar are reported for the first time from Greece and from Europe. The results presented, together with the available data on necropsies of dogs and cats, human infections and the biotope preference of the snail, suggest that Greece is an important focus of infection in Europe. 相似文献
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When I agreed to review this book, I did so because I thoughtit would be an opportunity to bring myself up-to-date in a fieldI felt I ought to know more about. I had no idea that it wouldmake such compulsive reading. Jean Langenheim has spent hercareer working on plant resins and she has done a great serviceby assembling her wealth of knowledge and experience into thismarvellous book. The blandness of the title 相似文献
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