Effect of Rhizosphere Microorganisms Induced by Potato-Onion on Tomato Root-Knot Nematode Disease
High-throughput sequencing and plant-soil feedback were used in this study,the effect of potato-onion companion induced tomato rhizosphere microorganisms on the tomato toot-knot nematode disease,soil microbial community structure and induced resistance were studied.The results showed that potato-onion companion induce the tomato rhizosphere microorganisms to decreased the tomato disease index,root-knot number and root-knot index and increased the Meloidogyne incognita egg hatching and the lethality rate.Under root-knot nematode stress,the Bacillus and Pseudomonas relative abundance were increased in tomato rhizosphere.Meanwhile,potato-onion companion changes tomato rhizosphere microbes enhanced systemic resistance by increasing expression of resistance-related genes,defense enzyme activity and JAs activity.In conclusion,potato-onion companion with tomato changed tomato rhizosphere microorganisms not only has direct inhibition effect on root-knot nematode,but also enhances resistance to root-knot nematode by inducing resistance.
NETL
NSTL
万方数据
