Penetration and translocation of Erwinia amylovora-specific bacteriophages in apple - a possibility of enhanced control of fire blight

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• 作者：Judit Kolozsváriné Nagy ; Ildikó Schwarczinger…
• 关键词：Erwinia amylovora ; Fire blight ; Phage ; Apple plant ; Translocation
• 刊名：European Journal of Plant Pathology
• 出版年：2015
• 出版时间：August 2015
• 年：2015
• 卷：142
• 期：4
• 页码：815-827
• 全文大小：719 KB
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• 作者单位：Judit Kolozsváriné Nagy (1)
  Ildikó Schwarczinger (1)
  András Künstler (1)
  Miklós Pogány (1)
  Lóránt Király (1)
  
  1. Plant Protection Institute, Centre for Agricultural Research, Hungarian Academy of Sciences, Herman O. street 15, 1022, Budapest, Hungary
  
• 刊物类别：Biomedical and Life Sciences
• 刊物主题：Life Sciences
  Plant Pathology
  Plant Sciences
  Ecology
  
• 出版者：Springer Netherlands
• ISSN：1573-8469

文摘

We have investigated the uptake and delivery of Erwinia amylovora-specific bacteriophages in apple plants. The main aim of this study was to assess the potential of phage application as a means for improving phage persistence and thereby the control of fire blight, the disease caused by E. amylovora. Both phage strains tested (ΦEa104 and H5K) were able to translocate in apple seedlings and were detectable by a modified Adams-drop test and real-time qPCR in plant parts above ground level following their application to the roots. Conversely, phages were detectable in roots after spraying them onto the stem and leaves. A water suspension of phages effectively decreased symptom severity of E. amylovora infection in apple seedlings following treatment of roots or aerial plant parts and application to the cotyledon, as judged by symptom bonitation. A similar effect was achieved by spraying a phage suspension onto flowering firethorn shoots. Interestingly no significant differences in controlling E. amylovora infection were found among the two phage strains tested. It seems that phages specific to E. amylovora can penetrate plants and exhibit a decrease in severity of symptoms caused by the phytopathogen. Demonstrating in planta translocation of E. amylovora-specific bacteriophages and their effect of reducing fire blight symptoms may significantly contribute to a better control of E. amylovora and promote further investigations on penetration and translocation of phages into plants.