Sutthisa1* and N. Sanoamuang2,3

1 Department of Biology, Faculty of Science, Mahasarakham University, Kantarawichai District, Mahasarakham Province, 44150 Thailand
2 Department of Plant Science and Agricultural Resources, Faculty of Agriculture, KhonKaen
University, KhonKaen, 40002 Thailand
3 Applied Taxonomic Research Center, KhonKaen University, KhonKaen, 40002 Thailand


(Received: 21 August 2017; accepted: 20 Ocotber 2017)


The objective of this study was to identify and study the effect of colchicine treatment on the growth and enzyme production ofPycnoporuscoccineus KKUPN1.  Molecular identification using universal primer ITS1 and ITS4 found that KKUPN1 was Pycnoporuscoccineus (ID: KU202741).  The effect of colchicine when culturing P. coccineus KKUPN1 in Czapex doc brothandpotato dextrose broth (PDB) containing 0, 0.05 and 0.1% (v/v) colchicine for 7 and 14 d was studied.  The result showed that in the early stage all treatments containing colchicine gave better growth than the treatments without colchicine.  However, 5 d after inoculation, the growth rates were not significantly different in all treatments.  The colony morphology of P. coccineus KKUPN1 isolated from Czapex doc broth containing colchicine showed the production of orange-red pigment that was not present from the medium without colchicine. In PDB containing 0.05 and 0.1% (v/v) colchicine for 7 d, the colonies had orange-red pigment from the edge of the colony to the center, while 0% (v/v) colchicine produced sparse mycelia with slight pigment.  The enzyme test of P. coccineus KKUPN1 cultured in Czapex doc broth or PDB with colchicine added produced results that showed they did not produce a hemicellulolytic enzyme and a lignin modification enzyme, but could produce a cellulolytic enzyme that was detected by CMC agar and esculin agar but could not be detected by cellulose agar.


colchicine, enzyme production, Pycnoporuscoccineus