| trichoderma biodiversity in china: evidence for a north to south distribution of species in east asia. | towards assessing the biodiversity and biogeography of trichoderma, we have analyzed the occurrence of trichoderma species in soil and litter from four areas in china: north (hebei province), south-east (zhejiang province), west (himalayan, tibet) and south-west (yunnan province). one hundred and thirty five isolates were grouped according to tentative morphological identification. a representative 64 isolates were verified at the species level by the oligonucleotide barcode program tricho key v ... | 2005 | 16165315 |