The interactive effects of arbuscular mycorrhiza and plant growth-promoting rhizobacteria synergistically enhance host plant defences against pathogens.
The interactive effects of arbuscular mycorrhiza and plant growth-promoting rhizobacteria synergistically enhance host plant defences against pathogens.
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DOI：
10.1038/s41598-017-16697-4
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发表时间：
2017-11-27
影响因子：
4.6
通讯作者：
Cameron DD
中科院分区：
文献类型：
--
作者：
Pérez-de-Luque A;Tille S;Johnson I;Pascual-Pardo D;Ton J;Cameron DD
植物根系、菌根真菌和植物根际促生细菌（PGPR）之间的地下相互作用可以通过增强营养获取和引发植物免疫系统来改善植物健康。用菌根真菌Rhizophagus irregularis和根际细菌Pseudomonasputida KT 2440接种两个形成菌根能力不同的小麦品种。菌根亲和性高的品种比菌根亲和性低的品种支持更高水平的根际细菌定殖。这些水平增加了菌根感染。相反，低兼容性品种的根际细菌定殖减少菌根丛枝形成。单次接种R. irregularis或P.putida对两个品种的生长影响不同。此外，虽然这两个品种的系统引发壳聚糖诱导的胼胝质后，单一接种R。不规则孢或恶臭假单胞菌中，只有具有高菌根相容性的品种在与两种微生物共接种后显示出胼胝质响应性的协同增加。结果表明，根系、菌根真菌和PGPR之间的多边相互作用对小麦的生长和系统启动具有协同效应。
Belowground interactions between plant roots, mycorrhizal fungi and plant growth-promoting rhizobacteria (PGPR) can improve plant health via enhanced nutrient acquisition and priming of the plant immune system. Two wheat cultivars differing in their ability to form mycorrhiza were (co)inoculated with the mycorrhizal fungus Rhizophagus irregularis and the rhizobacterial strain Pseudomonas putida KT2440. The cultivar with high mycorrhizal compatibility supported higher levels of rhizobacterial colonization than the low compatibility cultivar. Those levels were augmented by mycorrhizal infection. Conversely, rhizobacterial colonization of the low compatibility cultivar was reduced by mycorrhizal arbuscule formation. Single inoculations with R. irregularis or P. putida had differential growth effects on both cultivars. Furthermore, while both cultivars developed systemic priming of chitosan-induced callose after single inoculations with R. irregularis or P. putida, only the cultivar with high mycorrhizal compatibility showed a synergistic increase in callose responsiveness following co-inoculation with both microbes. Our results show that multilateral interactions between roots, mycorrhizal fungi and PGPR can have synergistic effects on growth and systemic priming of wheat.
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影响因子：
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