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Phytoplasmas and their interactions with hosts

机译：植原体及其与宿主的相互作用

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Phytoplasmas are bacteria without cell walls and are responsible for plant diseases that have large economic impacts. Knowledge of their biology is limited because they are uncultivable and experimentally inaccessible in their hosts. It is a mystery how these bacteria use the sugar-rich phloem sap in which they live and how they interact with the host. This makes it difficult to develop means to control them. Recently, the full genomes of two phytoplasmas have been sequenced, allowing new insights into their requirements. Phytoplasmas contain a minimal genome and lack genes coding for ATP synthases and sugar uptake and use, making them dependent on their host. This dependency can be exploited to elucidate the particular physiology of the phloem.
机译：植原体是没有细胞壁的细菌，是造成重大经济影响的植物病害的原因。对它们生物学的知识是有限的，因为它们无法被培养并且在宿主中实验上无法接近。这些细菌如何利用它们生活在其中的富含糖的韧皮部汁液以及它们如何与宿主相互作用是一个谜。这使得难以开发控制它们的手段。最近，已经对两个植物原质的完整基因组进行了测序，从而为他们的需求提供了新的见解。植原体的基因组最少，缺乏编码ATP合酶和糖吸收和使用的基因，这使其依赖宿主。可以利用这种依赖性来阐明韧皮部的特定生理学。

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