This thesis is based on the following articles and manuscripts, which are referred to in the text by their Roman numerals: Mesocosms mimic natural meadows as regards greenhouse gas fluxes and potential activities of nitrifying and denitrifying bacteria. Plant and Soil 276: 287-299. soil microbial community structure under elevated tropospheric O 3 and CO 2. Submitted for publication. Difference...

747 1941-Lathyrus sativus peas, spastic paraparesis; the toxic agent was identified to be 1)-JY-methylamino-Lalanine (BMAA); 1953-Guamalian type of Parkinsonism, caused by the seeds of Cycas circinalis; the toxic agent was identified as 1)-JY-oxalylmethylamino-Lalanine (BOMAA); 1948-hexachloraphene encephalopathy; 1950-monosodium glutamate in baby food; 1953-Minamata disease, mercury encephalop...

Introduction Grass pea consumption leads to neurolathyrism and a safer use of this environmentally adaptable crop needs cultivars with decreased neurotoxin levels. Were they cross-compatible, grass peas would be useful genetic resources for disease resistance breeding of peas (Pisum sativum L.). In vitro selection (9) and gene transfer may provide grass peas better adapted for consumption, whil...

The effects of Lathyrus sativus neurotoxin were studied on the cell membrane potential and cellular cation composition in Retzius nerve cells of the leech Haemopis sanguisuga, with ion-selective microelectrodes using liquid ion-exchangers. Bath application of 10(-4) mol/l Lathyrus sativus neurotoxin for 3 min depolarized the cell membrane potential and decreased the input resistance of directly...

PsSat5, a cDNA clone from Pisum sativum cv. Alaska, contained a microsatellite consisting of 15 TCA repeats within the 59UTR. This SSR microsatellite was immediately upstream of the presumptive ATG start codon. PCR amplification of genomic DNA from cv. Alaska yielded an identical sequence. This repeat region was analyzed from 10 additional wild and cultivated accessions of Pisum and from four c...

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