00985nas a2200145 4500008004100000022001300041245008900054210006900143260001600212300000800228490000700236520052700243100002700770856004200797 1971 eng d a0031949X00aBlack-Butt Disease of Black Wattle Caused by Phytophthora nicotianae var. parasitica0 aBlackButt Disease of Black Wattle Caused by Phytophthora nicotia cJan-01-1971 a1440 v613 a

Inoculation experiments show that the black-butt disease of Black Wattle (Acacia mearnsii), cultivated for the high-quality tannins in its bark, appears to be caused by Phytophthora nicotianae var. parasitica. Two syndromes of the disease can be distinguished. The first takes the form of spreading mottled lesions, possibly related to infection by zoospores, and the second of tongues of diseased bark, originating from the penetration of mycelium.

1 aZeijlemaker, F., C. J. uhttps://doi.org/10.1094/phyto-61-144