Staining ability of various sapstaining fungi on agar plates and on wood wafers
1999
Yang, D.Q.
Sapstain is the blue-black discoloration of sapwood caused by various sapstaining fungi that deeply penetrate into the wood. These staining fungi generally belong to three groups of fungi: species of Ceratocystis/Ophiostoma, black yeasts, and dark molds. The staining abilities of these fungi vary with different wood species. To develop an effective narrow-spectrum control method for sapstain control, information on the staining ability of these fungi on various wood species will be very useful. The present study was conducted to evaluate growth and pigmentation of various sapstaining fungi on malt-extract agar and on different wood species. A total of 18 sapstaining fungal species, including 70 isolates, were examined. All of these fungi were isolated from logs and lumber of various softwoods across Canada. The results showed that various staining fungi had different growth rates in Petri plates. For most of these fungi, no correlation was found between growth rate on agar and growth rate on wood. On the basis of staining ability, three categories of staining fungi could be recognized on four wood species tested: 1) dark staining fungi, such as O. piliferum on jack pine, O. minus on white pine, and C. coerulescens on white spruce; 2) light staining fungi, such as O. piceae, C. adiposa, and Leptographium sp. on all four wood species; and 3) no growth, such as O. flexuosum on white spruce and balsam fir.
Show more [+] Less [-]AGROVOC Keywords
Bibliographic information
This bibliographic record has been provided by National Agricultural Library