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首页> 外文会议>International Conference on Pseudomonas Syringae Pathovars and Related Pathogens >Separate Origins and Pathogenic Convergencein Pseudomonas avellanae Lineages
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Separate Origins and Pathogenic Convergencein Pseudomonas avellanae Lineages

机译：分开的起源和致病症inaudomonas avellanae谱系

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Pseudomonas avellanae is the causal agent of hazelnut (Corylus avel-lana L.) decline both in northern Greece and central Italy, and two lineages relatedto the geographic origin of the pathogen have previously been pointed out. In orderto verify the possible correlation between the genetic diversity and the geographicdistance, forty representative strains, obtained from all the areas where the diseasewas so far observed, were analysed by combining the data obtained from repetitive-sequence PCR using ERIC and BOX primer sets and IS50-PCR, and statisticalmethods revealing the genetic diversity among the populations. The Manteltest performed with ERIC-PCR, BOX-PCR and IS50-PCR data revealed that theP avellanae populations that are spatially distant from each other are also geneticallydissimilar. The gene flow estimates confirm such data. Virulence tests were carriedout on hazelnut trees trained in soils with different pHs. The highest virulence ofP. avellanae strains was observed when they were inoculated on twigs of treesgrown in subacidic soils (pH 4.8). Such data are in agreement with the more severeoccurrence of the hazelnut decline both in Greece and Italy in orchards character-ized by subacidic soils. The sudden occurrence of hazelnut decline in differentgeographic areas could represent a case of pathogenic convergence in locally adaptedphytopathogenic pseudomonads.
机译：假单胞菌avellanae是榛子的致病因子（榛子AVEL-LANA L.）在希腊北部和意大利中部两个下降，两个谱系愿意与我们病原体的地理来源先前已指出。在orderto验证的遗传多样性和geographicdistance之间的可能的相关性，40代表株，从所有其中diseasewas迄今所观察到的区域而获得的，通过使用ERIC和BOX引物组和IS50从重复序列PCR获得的数据进行组合分析-PCR，统计学方法揭示了人口中的遗传多样性。所述Manteltest与ERIC-PCR，BOX-PCR和IS50-PCR数据进行显示，求解P avellanae种群在空间上彼此远离，也geneticallydissimilar。基因流程估计确认这些数据。在培训的榛子树上携带毒力测试，培训的土壤具有不同的pH。最高的毒力量。当它们接种在亚脱发土壤中的树枝（pH 4.8）中时观察到禽兰菌株。这些数据与希腊和意大利在果树园的果园和意大利的榛子拒绝的更严重的细胞。突然发生的榛子下降在不同地相位区域的下降可以代表局部适应的肺疗法假单胞菌在局部适应的致病会聚的情况。

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