n of land by plants. New Phytologist 186: 514-525. White T, Bruns T, Lee S. Taylor). 1990. Amplification and direct sequencing of fungal ribosomal RNAgenes for phylogenetia. In:Innis M.Gelfand D.Sninskyl. White T. eds. PCR protocols: a guide to method and applications Orlando. FL USA: Anaemic Press. 31