A recent study assessing the role of ePG in O. ulmi, however, suggests that the enzyme functions as a parasitic fitness factor as opposed to a virulence factor, given that targeted disruption of the gene led to a reduction in pectin-degrading activity and not a lethal phenotype [ 49].
This work adds to the idea of a general fitness factor, f, that is similar in concept to g and of which g is one manifestation.
The inability to utilize a fungal siderophore as source of iron nutrition by most of the rhizobial cultures isolated from pigeon pea, could be considered a negative fitness factor since hydroxamate siderophores are found in significant amounts in natural soils.
As expected, the non-aggressive species is a weak elm pathogen in contrast to the aggressive O. novo-ulmi species, but both species produce characteristically distinct levels of the toxin protein, cerato-ulmin which is important in protecting infectious propagules from desiccation and is thought to act as a parasitic fitness factor for the organism [ 13- 18].
These results suggest that a phenotype-wide fitness factor may contribute to the association between intelligence and health.
Likewise, the ability to utilise GalNAc of the gut mucin may represent both a virulence and fitness factor of particular importance for O 3/4 and reflects its adaptation/association with its host.
These programs "get rid of the intimidation factor -- women are going where they will see a woman who is more fit and a woman who is less fit," said Dr. Callahan, the author of "The Fitness Factor" (Lyons Press, 2002).
The power of an imperialist is inversely proportional to the cost, as is the case with fitness factor and cost in GA.
The average fitness factor method and normalized weighted objective functions method are separately used to select the best optimal solution from Pareto optimal fronts.
Two methods (normalized weighting objective functions method and average fitness factor method) are combinedly used to select best optimal solution from Pareto optimal front.
