THE BIOLOGY OF PHYTOPHTHORA CINNAMOMI IN AUSTRALASIAN FORESTS
THE BIOLOGY OF PHYTOPHTHORA CINNAMOMI IN AUSTRALASIAN FORESTS
复制标题
澳大利亚森林中肉桂疫霉的生物学
DOI:
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发表时间:
1987
期刊:
影响因子:
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通讯作者:
G. Weste
中科院分区:
文献类型:
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作者:
G. Weste
The request for this review is evidence of the worldwide concern for and fascination with the invasion by Phytophthora cinnamomi Rands of Au stralasian native forests. The area of Australia is large, but most of the interior is barren desert. Quite extensive forests occur on the eastern coastal zone from Papua New Guinea in the north to Tasmania in the south, and in the south west, with a smaller region in the far north of the continent. The forest tree genera are varied, and those of the rain forest may have Indo-Malaysian affinities, but dry, sclerophyll, or open forests are dominated by some of the 600 species of Eucalyptus. The southwest open forests are dominated by Eucalyptus marginata (jarrah), andjarrah dieback, recorded as early as 1920, was the first, and remains the worst, example of the cinnamon fungus epidemic. The role of P. cinnamomi in jarrah dieback was not elucidated until 1 965 (53). The same pathogen was then isolated from the eastern states. These early isolations did not prove that P. cinnamomi was responsible for the epidemic dieback and death of 75% of the flora that occurred in the jarrah forests of Western Australia, the stringy bark forests of the Brisbane Ranges, and the silvertop forests of East Gippsland. Proof was obtained when washed mycelium of P. cinnamomi, added to the topsoil, produced typical symptoms that gradually extended into the forest and from which the pathogen