High-density detection of restriction-site-associated DNA markers for rapid mapping of mutated loci in Neurospora.
The wealth of sequence information available for Neurospora crassa and other fungi has greatly facilitated evolutionary and molecular analyses of this group. Although "reverse" genetics, in which genes are first identified by their sequence rather than by their mutant phenotypes, serves as a valuable new approach for elucidating biological processes, classical "forward" genetic analysis is still extremely useful. Unfortunately, mapping mutations and identifying the corresponding genes has typically been slow and laborious. To facilitate forward genetics in Neurospora, we have adapted microarray-based restriction-site-associated DNA (RAD) mapping for use with N. crassa oligonucleotide microarrays. This technique was used to simultaneously detect an unprecedented number of genomewide restriction site polymorphisms from two N. crassa strains: Mauriceville and Oak Ridge. Furthermore, RAD mapping was used to quickly map a previously unknown gene, defective in methylation-7 (dim-7).
Institute of Molecular Biology, University of Oregon, Eugene, Oregon 97403-1229, USA.
Zachary A
ZA
Lewis
Anthony L
AL
Shiver
Nicholas
N
Stiffler
Michael R
MR
Miller
Eric A
EA
Johnson
Eric U
EU
Selker
D004271:DNA, Fungal / Q000235:genetics*; D005800:Genes, Fungal; D005819:Genetic Markers; D016681:Genome, Fungal / Q000235:genetics*; D046228:Microarray Analysis; D009154:Mutation; D009492:Neurospora crassa / Q000235:genetics*; D011110:Polymorphism, Genetic; D015183:Restriction Mapping / Q000379:methods*
D004271:DNA, Fungal; D005819:Genetic Markers