Now showing items 1-10 of 14
RNA polymerase activity during breakage of seed dormancy by low temperature treatment of fruits of Acer platanoides (Norway maple)
Endogenous RNA polymerase activity has been characterized in nuclei isolated from embryo axes of Acer platanoides. Optimal activity was recorded at 4·0 mol m MgCl and 50 mol m (NH) SO and total activity could be inhibited ...
Spore dispersal and plant disease gradients : a comparison between two empirical models
Power law and exponential models were fitted to 325 sets of observations which described decreases with distance in deposition of air-borne or splash-borne spores, or pollen, or in amounts of plant disease caused by fungi, ...
Pathogenicity to wheat seedlings of wheat-type and rye-type isolates of Pseudocercosporella herpotrichoides
Four groups of isolates of Pseudocerosporella herpotrichoides (wheat-type carbendazimsensitive, wheat-type carbendazim-resistant, rye-type carbendazim-sensitive and rye-type carbendazim-resistant) were tested for pathogenicity ...
The nucleotide sequence of the tnpA gene of Tn21
The nucleotide sequence of the tnpA gene of Tn21 is presented. The traneposase encoded by this gene is exactly the same length (988 amino acids) as the Tn501 transposase (4). and shows 72% homology overall with this protein, ...
Preferential lipid association and mode of penetration of apocytochrome c in mixed model membranes as monitored by tryptophanyl fluorescence quenching using brominated phospholipids
The fluorescence of the single tryptophan residue at position 59 in apocytochrome c, the biosynthetic precursor of the inner mitochondrial membrane protein cytochrome c, was studied in small unilamellar vesicles composed ...
Factors affecting microcomputer use and programming ability of secondary school children
A survey was conducted in Hertfordshire to provide information about microcomputer use both in school and at home. All schools were found to possess microcomputers but only a limited number of pupils reported using the ...
Explorations of a crisis intervention service
Descriptive studies of a crisis intervention service replicated previous findings of relationships between staff members' attitudes towards treatment and their 'personal styles'. The attitudes and personal styles of crisis ...
In vitro transcription
(Croom Helm, 1987)