Getting the ecology into interactions between plants and the plant growth-promoting bacterium Pseudomonas fluorescens.
Getting the ecology into interactions between plants and the plant growth-promoting bacterium Pseudomonas fluorescens.
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DOI：
10.3389/fpls.2013.00081
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发表时间：
2013
影响因子：
5.6
通讯作者：
Biere A
中科院分区：
文献类型：
--
作者：
Hol WH;Bezemer TM;Biere A
植物促生根瘤菌（Plant growth-promoting rhizobacteria， PGPR）通过促进植物生长和诱导系统抗性，对初级生产力的贡献越来越受到重视。在这里，我们重点研究了一种特殊的PGPR（荧光假单胞菌）通过诱导植物防御对植物的有益影响。这种模式生物对pgpr诱导植物防御的潜在分子机制提供了更多的理解。然而，只有当我们知道这些机制在更现实的、物种多样化的条件下也在多大程度上发生在植物根际时，这些知识才能充分发挥价值。为了提供必要的生态背景，我们回顾了文献，比较了荧光假单孢菌作为单一物种或与其他土壤栖息物种联合存在时对诱导植物防御的影响。具体来说，我们讨论了与其他植物共生菌（细菌或真菌）、植物病原体（细菌或真菌）、食菌菌（线虫或原生动物）和分解者的组合。荧光假单胞菌和其他植物共生菌之间的协同相互作用比拮抗相互作用更常被报道。最近的发展使荧光假单胞菌的防御性状基因组筛选成为可能，这可能有助于选择在生物防治方面可能具有积极相互作用的菌株。然而，研究多种食草动物、病原体或食草动物和病原体一起对PGPR诱导植物防御的有效性的影响的研究还不够充分，而且我们还没有发现任何研究检查了荧光假单胞菌和细菌捕食者或分解者之间的相互作用。由于共生土壤生物可以增强但也会降低PGPR的有效性，因此更好地了解调节荧光假单胞菌与植物相互作用的生物因子将提高引入荧光假单胞菌提高植物生产和防御的有效性。
Plant growth-promoting rhizobacteria (PGPR) are increasingly appreciated for their contributions to primary productivity through promotion of growth and triggering of induced systemic resistance in plants. Here we focus on the beneficial effects of one particular species of PGPR (Pseudomonas fluorescens) on plants through induced plant defense. This model organism has provided much understanding of the underlying molecular mechanisms of PGPR-induced plant defense. However, this knowledge can only be appreciated at full value once we know to what extent these mechanisms also occur under more realistic, species-diverse conditions as are occurring in the plant rhizosphere. To provide the necessary ecological context, we review the literature to compare the effect of P. fluorescens on induced plant defense when it is present as a single species or in combination with other soil dwelling species. Specifically, we discuss combinations with other plant mutualists (bacterial or fungal), plant pathogens (bacterial or fungal), bacterivores (nematode or protozoa), and decomposers. Synergistic interactions between P. fluorescens and other plant mutualists are much more commonly reported than antagonistic interactions. Recent developments have enabled screenings of P. fluorescens genomes for defense traits and this could help with selection of strains with likely positive interactions on biocontrol. However, studies that examine the effects of multiple herbivores, pathogens, or herbivores and pathogens together on the effectiveness of PGPR to induce plant defenses are underrepresented and we are not aware of any study that has examined interactions between P. fluorescens and bacterivores or decomposers. As co-occurring soil organisms can enhance but also reduce the effectiveness of PGPR, a better understanding of the biotic factors modulating P. fluorescens–plant interactions will improve the effectiveness of introducing P. fluorescens to enhance plant production and defense.
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影响因子：
4.1
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通讯作者：
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