ISSN:
1432-2048
Keywords:
Abscisic acid
;
Nicotiana
;
Ribonucleic acid synthesis
;
Tobacco mosaic virus
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
Notes:
Abstract Uptake of abscisic acid from the culture medium by discs of healthy and tobacco mosaic virus-infected tobacco leaves was measured. Small (two to five-fold) increases in abscisic acid concentration in discs caused increases in rates of [3H]uridine and [3H]adenine incorporation into total nucleic acid, virus RNA and host ribosomal RNA. Net accumulation of virus RNA was also enhanced by abscisic acid. This evidence for stimulation of RNA synthesis is compared with previous reports showing inhibition of RNA synthesis in other tissues. It is suggested that the increase in endogenous abscisic acid caused by tobacco mosaic virus infection may be at least partly responsible for observed increases in rates of RNA synthesis after infection.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00390168
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