Bacterial canker of stone‐fruits: Infection experiments with Pseudomonas mors‐prunorum and P. syringae
Bacterial canker of stone‐fruits: Infection experiments with Pseudomonas mors‐prunorum and P. syringae
复制标题
核果细菌性溃疡病：Pseudomonas mors-prunorum 和 P. syringae 的感染实验
DOI：
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发表时间：
1966
期刊：
影响因子：
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通讯作者：
C. Garrett
中科院分区：
文献类型：
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作者：
J. Crosse;C. Garrett
总结
通过李茎和樱桃枝的伤口以及樱桃叶的疤痕，比较了高接种浓度下的梨枯假单胞菌和梨枯假单胞菌的效果。在伤口接种中，一种北美樱桃菌株的P. erichingae比三种本土樱桃菌株的P. mors-prunorum的毒性要大得多，但两种梨菌株的P. erichingae毒性较低。P. mors-prunorum表现出更大的能力，通过叶痕入侵，特别是接近尾声的落叶期，当所有三个P. pyringae菌株基本上是无效的。讨论的证据表明，梨枯病菌株通过叶痕的更大感染性与它们从小接种物定殖宿主组织的能力有关。樱桃疫霉菌株在樱桃溃疡病中死亡较早，在寄主传代过程中稳定性较差。实验结果表明，这些生物的毒力是一个复杂的现象，由几个因素决定。
SUMMARY
The effect was compared of inoculating Pseudomonas mors-prunorum and P. syringae at high inoculum concentration through wounds in plum stems and cherry branches, and through cherry-leaf scars. In the wound inoculations a North American cherry strain of P. syringae was considerably more virulent than any of three indigenous cherry strains of P. mors-prunorum, but two pear strains of P. syringae were less virulent. P. mors-prunorum showed a much greater capacity to invade through leaf scars, particularly towards the end of the leaf-fall period, when all three P. syringae strains were largely ineffective. Evidence is discussed which suggests that the greater infectivity of the P. mors-prunorum strains through leaf scars was related to their capacity to colonize the host tissues from small inocula. The P. syringae strains died out in cherry cankers earlier than P. mors-prunorum strains and they were less stable during host passage. The results of the experiments indicate that virulence in these organisms is a complex phenomenon and determined by several factors.