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Epidemiology studies of Pseudomonas syringae pathovars associated with bacterial canker on the sweet cherry in Serbia

机译:塞尔维亚甜樱桃细菌溃疡相关的假单胞菌霉菌的流行病学研究

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This study was?conducted to?examine the?epidemiological characteristics of?two Pseudomonas?syringae pvs. – syringae (Pss) and morsprunorum race 1 (Psm) on the?sweet cherry in?both field and laboratory conditions. Cycled inoculations of? one-year-old branches indicated that? the sweet cherry became sensitive to?Psm race 1 earlier in? the season (October) compared to?Pss (November). The?most severe infections occurred in?the dormancy period (November), while the?necroses formed in?January and March were less in?their length. Inoculations of?the two-/three-year-old branches performed in?November resulted in?necrosis, with those induced by?Pss being more aggressive. The?January inoculations, however, resulted in?less formed necroses in?length. Laboratory tests performed on excised sweet cherry branches confirmed the?results yielded by?the field experiments, indicating that?the dormancy period poses the?greatest risk for?the P. syringae pvs. infection. The?isolation of?Pss and Psm bacteria from naturally infected sweet cherry samples (cankers) during the?summer indicated that?the bacteria that?persists in?cankers in?low numbers became active during autumn. Significant Pss and Psm race 1 epiphytic bacterial populations were noted during the?spring, but decreased in?the summer and increased again in?the autumn, indicating the?presence of?inoculum reservoirs. The?greater understanding of?the control strategies aimed at?the epidemiological factors should, thus, facilitate better disease outbreak management.
机译:这项研究是?进行?检查吗?两种假单胞菌的流行病学特征?Syringae PVS。 - 在甜樱桃中的桑克酸(PSS)和Morsprururum Race 1(PSM)在?既有现场和实验室条件。循环的接种?一岁的分支表明?甜蜜的樱桃变得敏感?PSM比赛1早些时候?本赛季(10月)与?PSS(11月)相比。 ?最严重的感染发生在?休眠期(十一月),而姓氏在1月和3月形成的?它们的长度较少。接种的?在11月份进行的两个/三岁的分支机构导致了?坏死,被那些诱导的人更具侵略性。然而,1月份的接种导致?长度较少地形成粗糙。在切除的甜樱桃枝上进行了实验室测试证实了?结果产生的结果?现场实验,表明?休眠期造成最大的风险?P.Inringae PVS。感染。夏天的自然感染的甜樱桃样品(溃疡)中的αs和psm细菌的分离表明?细菌?持续存在?溃疡在秋天期间变得活跃。在春天期间注意到了重要的PSS和PSM种族和PSM比赛1果白细菌种群,但在夏天和夏季再次增加?秋季,表明?Inculum储层的存在。更好的理解?旨在的控制策略?流行病学因素应该促进更好的疾病爆发管理。

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