title: Genetics of dothistromin biosynthesis of Dothistroma septosporum: an update.
abstract: Dothistroma needle blight is one of the most devastating fungal pine diseases worldwide. The disease is characterized by accumulation in pine needles of a red toxin, dothistromin, that is chemically related to aflatoxin (AF) and sterigmatocystin (ST). This review updates current knowledge of the genetics of dothistromin biosynthesis by the Dothistroma septosporum pathogen and highlights differences in gene organization and regulation that have been discovered between the dothistromin and AF/ST systems. Some previously reported genes are promoted or demoted as 'dothistromin genes' based on recent research. A new dothistromin gene, norB, is reported, and evidence of dothistromin gene homologs in other Dothideomycete fungi is presented. A hypothesis for the biological role of dothistromin is outlined. Finally, the impact that the availability of the D. septosporum genome sequence will have on dothistromin research is discussed.
authors: Bio-Protection Research Centre, Institute of Molecular BioSciences, Massey University, Palmerston North, New Zealand. arne.schwelm@vbsg.slu.se
authors: Arne
authors: A
authors: Schwelm
authors: Rosie E
authors: RE
authors: Bradshaw
mesh_terms: D000880:Anthraquinones / Q000737:chemistry / Q000378:metabolism*; D001203:Ascomycota / Q000235:genetics* / Q000378:metabolism; D015966:Gene Expression Regulation, Fungal; D005800:Genes, Fungal / Q000235:genetics; D009183:Mycotoxins / Q000737:chemistry / Q000378:metabolism*; D010088:Oxidoreductases / Q000235:genetics; D028223:Pinus / Q000382:microbiology; D010935:Plant Diseases / Q000382:microbiology
chemical_list: D000880:Anthraquinones; D009183:Mycotoxins; C042735:dothistromin; D010088:Oxidoreductases; C034747:nitric-oxide reductase