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Now showing items 31-33 of 33
Engineering of mutants of Anabaena PCC7120 (cyanobacterium) constructed by DNA-plasmid transfer and UV-radiation resistant to the herbicide Diuron capable of ammonia production
(
Elfos Scientiae , Cuba
, 2004 , Article)
Ten mutants of Anabaena PCC7120 were successfully constructed to express two genetic traits, ammonia production and the resistance to the Diuron herbicide, using transposon induced mutagenesis and UV-radiation. The
ranges ...
Competition, facilitation, and niche differentiation in two foliar pathogens
(
Springer Berlin / Heidelberg
, 2004 , Article)
We studied competition between the obligate biotroph Puccinia triticina (designated here as Puccinia) and the facultative saprophyte Pyrenophora tritici-repentis (designated here as Pyrenophora) in older and younger leaves ...
Man-made impact on the geochemistry of the Nile delta lakes. A study of metals concentrations in sediments
(
Kluwer Academic Publishers
, 2004 , Article)
Forty two sediment samples were collected from four River Nile northern delta lakes (Mariut, Edku, Burullus and Manzalah) to asses the man-made impact on their environment during the last 20 years. Due to the continuous ...