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首页> 外文期刊>Forest Pathology >Variation among New Zealand isolates of Sphaeropsis sapinea
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Variation among New Zealand isolates of Sphaeropsis sapinea

机译：新西兰沙生菌的分离株之间的差异

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摘要

Sphaeropsis sapinea is a pathogen of many coniferous species and causes significant losses to the plantation forestry industries of many countries. New Zealand isolates of S. sapinea were examined for colony and morphological characteristics, and pathogenicity to Pinus radiata seedlings. Considerable variation was observes in colony growth form and Colour, and in the growth rates on four agar media. v a The conidial dimensions, carbon and nitrogen utilization, and pathogenicity also varied among the isolates. The variation observed was such that the isolates could not be placed within previously described distinct morphotypes and the present results concur with previous studies cautioning the use of morphological criteria alone to partition the species. These results contrast markedly with previous report and seemingly indicate a change in the New Zealand S. sapinea population. This difference may reflect the re-introduction or spread of additional isolates or a shift in the structure of the resident population.
机译：鞘脂单孢菌是许多针叶树种的病原体，对许多国家的人工林工业造成重大损失。检查了新西兰分离的S. sapinea的菌落和形态特征，以及对辐射松幼苗的致病性。观察到菌落生长形式和颜色以及四种琼脂培养基上的生长速率存在明显差异。 v在分离株之间，分生孢子的大小，碳和氮的利用以及致病性也有所不同。观察到的变异使得不能将分离物置于先前描述的不同形态类型中，并且本结果与先前的研究一致，该研究警告仅使用形态学标准来划分物种。这些结果与以前的报告明显不同，似乎表明新西兰S. sapinea种群发生了变化。这种差异可能反映了其他分离株的重新引入或传播或常住人口结构的变化。

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