Genetic variation in 30 isolates of Discula umbrinella derived from beech, chestnut, and oak was assessed using randomly amplified polymorphic DNA (RAPD) and restriction fragment length polymorphic markers. Polymerase chain reaction amplifications with 17 primers produced 134 different DNA fragments. Three RAPD fragments were subsequently used for Southern hybridization. By these techniques up to four different individuals could be detected in the same leaf. The presence of several individuals within a single leaf indicates a finely tuned balance between the endophyte and its host. Cluster analysis of all arbitrary primed amplified DNA fragments showed that the isolates could be placed into four groups corresponding to their host origin. The high percentage of private RAPD variants within groups is consistent with low gene flow.

Download full-text PDF

Source
http://dx.doi.org/10.1094/mpmi-5-479DOI Listing

Publication Analysis

Top Keywords

isolates discula
8
discula umbrinella
8
beech chestnut
8
chestnut oak
8
randomly amplified
8
amplified polymorphic
8
polymorphic dna
8
dna fragments
8
differentiation isolates
4
umbrinella teleomorph
4

Similar Publications

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!