Nuaima Rasha Haj, Tanneau Eva, Heuer Holger
Institute for Epidemiology and Pathogen Diagnostics, Julius Kühn Institute, 38104 Brunswick, Germany.
Max Planck Institute for Evolutionary Biology, 24306 Plön, Germany.
Microorganisms. 2025 Jan 28;13(2):289. doi: 10.3390/microorganisms13020289.
Rhizosphere microbes, particularly bacteria, are essential for controlling plant-parasitic nematodes (PPNs) through various mechanisms. However, the plant's age and the genetic composition of nematode populations can significantly influence the inhibitory effectiveness of these microbes against the beet cyst nematode . In this study, rhizosphere microbes were isolated from 39-day-old and 69-day-old resistant oilseed radish plants to evaluate their impact on the penetration of the second-stage juveniles (J2s) originating from four genetically distinct populations. The suppression of J2s penetration by the attached microbes varied across the nematode populations, which displayed differing levels of aggressiveness toward the resistant oilseed radish. Furthermore, differences in the alpha and beta diversity of rhizosphere bacteria were observed between the 39-day-old and 69-day-old plants, leading to variations in the bacterial attachment among the four nematode populations. In summary, the effectiveness of resistant catch crops against is influenced by the pathogenicity of the nematode populations and their interactions with the rhizosphere microbial community shaped by the plant's age.
根际微生物，尤其是细菌，通过各种机制对控制植物寄生线虫至关重要。然而，植物的年龄和线虫种群的遗传组成会显著影响这些微生物对甜菜孢囊线虫的抑制效果。在本研究中，从39日龄和69日龄的抗性油菜萝卜植株中分离根际微生物，以评估它们对来自四个遗传不同种群的二期幼虫（J2s）穿透的影响。附着微生物对J2s穿透的抑制作用因线虫种群而异，这些线虫种群对抗性油菜萝卜表现出不同程度的侵袭性。此外，在39日龄和69日龄植株之间观察到根际细菌的α和β多样性存在差异，导致四个线虫种群之间的细菌附着情况有所不同。总之，抗性诱捕作物对[未提及具体对象]的有效性受线虫种群的致病性及其与受植物年龄影响的根际微生物群落相互作用的影响。
