Purpose The aim of this study is to determine whether customer satisfaction, trust and commitment as relationship quality factors can be valuable to a luxury motor vehicle dealership in generating favourable behavioural intentions concerning post-purchase service and repair offerings. Design/methodology/approach A descriptive research design was followed, and self-administered questionnaires were fielded among customers of the luxury motor vehicle dealership. A total of 301 questionnaires were returned and the interrelationships between the constructs were examined using structural equation modelling. Findings It was discovered that customers who trust the dealership may be more committed, and commitment may strengthen the relationship between customer satisfaction and a favourable behavioural intention towards the dealership. Research limitations/implications The findings of the study add to the developing body of empirical literature on relationship quality and behavioural intention. Practical implications The study indicates how relationship quality factors can influence behavioural intentions of customers, assist in building long-term relationships with customers and retain current customers where post-purchase service and repairs of luxury goods are concerned. Originality/value The study provides an emerging market perspective of the interrelationships between relationship quality factors affecting behavioural intention regarding service and repairs of luxury goods.

a b s t r a c tAmylostereum areolatum is a filamentous fungus that grows through tip extension, branching and hyphal fusion. In the homokaryotic phase, the hyphae of different individuals are capable of fusing followed by heterokaryon formation, only if they have dissimilar allelic specificities at their mating-type (mat) loci. In turn, hyphal fusion between heterokaryons persists only when they share the same alleles at all of their heterokaryon incompatibility (het) loci. In this study we present the first genetic linkage map for A. areolatum, onto which the mat and het loci, as well as quantitative trait loci (QTLs) for mycelial growth rate are mapped. The recognition loci (mat-A and het-A) are positioned near QTLs associated with mycelial growth, suggesting that the genetic determinants influencing recognition and growth rate in A. areolatum are closely associated. This was confirmed when isolates associated with specific mat and het loci displayed significantly different mycelial growth rates. Although the link between growth and sexual recognition has previously been observed in other fungi, this is the first time that an association between growth and self-recognition has been shown.

In filamentous fungi, vegetative compatibility among individuals of the same species is determined by the genes encoded at the heterokaryon incompatibility (het) loci. The hyphae of genetically similar individuals that share the same allelic specificities at their het loci are able to fuse and intermingle, while different allelic specificities at the het loci result in cell death of the interacting hyphae. In this study, suppression subtractive hybridization (SSH) followed by pyrosequencing and quantitative reverse transcription PCR were used to identify genes that are selectively expressed when vegetatively incompatible individuals of Amylostereum areolatum interact. The SSH library contained genes associated with various cellular processes, including cell-cell adhesion, stress and defence responses, as well as cell death. Some of the transcripts encoded proteins that were previously implicated in the stress and defence responses associated with vegetative incompatibility. Other transcripts encoded proteins known to be associated with programmed cell death, but have not previously been linked with vegetative incompatibility.Results of this study have considerably increased our knowledge of the processes underlying vegetative incompatibility in Basidiomycetes in general and A. areolatum in particular.

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