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首页> 外文期刊>Acta Horticulturae >Chestnut blight and evaluation of the feasibility of its biological control in the Aydn Province, Turkey by using hypovirulence.
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Chestnut blight and evaluation of the feasibility of its biological control in the Aydn Province, Turkey by using hypovirulence.

机译：利用低毒力在土耳其艾登省进行栗疫病及其生物防治的可行性评估。

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Aydn is the leading chestnut producing province of Turkey and supplies approximately one-third of the Turkish production. However, the nut production and the survival of the chestnut trees is under the threat of chestnut blight. So far the limited efforts applied by chestnut growers to control the disease through their own practices have been insufficient to decrease its spread and to prevent its introduction into new disease-free areas. On the contrary, the disease spread was encouraged by the sylvicultural and harvesting mistreatments. In Aydn Province out of 31 chestnut-producing villages, 22 of them were found to be contaminated with chestnut blight. Among all C. parasitica isolates obtained from the cankers of blighted trees, only one exhibited dsRNA, but its association with hypovirulence has not been established yet. Two vc types, the EU-1 and EU-12, were identified. EU-1 was the most widespread vc type. The low vc diversity provides a good potential for hypovirulence related biological control of chestnut blight in the province. In addition, the low vc diversity might be an indication of lack of sexual reproduction of C. parasitica. Mating type assays on C. parasitica isolates showed that both mating types were present in the province, however, the MAT-1:MAT-2 ratio was significantly skewed from 1:1 in each village, which might be another evidence of lack of sexual recombination. No perithecia were encountered in nature. These results emphasize the opportunity to control the disease through biological control by introducing appropriate hypovirulent strains. But it should be remembered that in some villages of Aydn Province the presence of EU-1 and EU-12 from opposite mating types (MAT-1 and MAT-2) may create a possibility that the fungus may initiate sexual reproduction and this may result in the emergence of new vc groups.
机译：艾登（Aydn）是土耳其主要的栗子生产省，供应土耳其约三分之一的产量。然而，栗树的坚果生产和板栗树的生存受到威胁。迄今为止，板栗种植者通过自己的实践来控制该病的有限努力不足以减少其传播并防止其被引入新的无病地区。相反，由于树木栽培和收割不当，促使疾病传播。在艾登省的31个栗子生产村庄中，有22个被栗子枯萎病污染。在所有 C中。从枯萎的树木的鳞茎中分离出的寄生虫分离株中，只有一种表现出dsRNA，但尚未确定其与低毒力的关系。确定了两种vc类型，即EU-1和EU-12。 EU-1是最广泛使用的vc类型。低的vc多样性为该省栗枯病的低毒相关生物防治提供了良好的潜力。另外，低的vc多样性可能表明缺乏C的有性生殖。寄生虫。在iC上进行交配型分析。寄生虫的分离株表明，该省存在两种交配类型，但是，每个村庄的MAT-1：MAT-2比值从1：1明显偏斜，这可能是缺乏性重组的又一证据。在自然界中没有遇到皮膜炎。这些结果强调了通过引入适当的低毒力菌株通过生物控制来控制疾病的机会。但应记住，在艾登省的一些村庄，存在相反交配类型（MAT-1和MAT-2）的EU-1和EU-12可能会导致真菌启动性繁殖的可能性，并可能导致在出现新的vc组。

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