Bo Tingting, Kong Chuixu, Zou Shunxing, Mo Minghe, Liu Yajun
State Key Laboratory for Conservation and Utilization of Bio-Resources, Yunnan University, Kunming 650032, China.
Key Laboratory for Southwest Microbial Diversity of the Ministry of Education, Yunnan University, Kunming 650032, China.
Microorganisms. 2022 Jan 20;10(2):218. doi: 10.3390/microorganisms10020218.
is widely applied in many countries as a biocontrol fungus against parasitic nematodes in plants. In a field experiment, the combined use of B16 increased the biocontrol efficiency of ZK7 against . Further study indicated that the colonization of ZK7 in the rhizosphere soil and the roots of tomatoes was significantly higher in the combined use group than in the control group. Gas chromatography was conducted to determine the effects of signaling substances. Five compounds, hexanal, (E)-2-hexenal, furfural, benzaldehyde, and 2-nonanone, were found to be highly altered in the volatile compounds produced in the soil under the combined application. The changes in benzaldehyde and 2-nonanone were the main factors that resulted in an increase in the colonization of fungi ZK7 in the tomato roots. Furfural was the main volatile substance that affected the colonization of fungi ZK7 in the soil. The combined use of B16 and ZK7 altered the volatile ranges and resulted in increased colonization of biocontrol fungi and improved biocontrol efficiency against nematodes. This combined model could be used to promote the ability of biocontrol fungi to control root-knot nematodes.
作为一种用于防治植物寄生线虫的生防真菌，在许多国家被广泛应用。在田间试验中，B16与ZK7联合使用提高了ZK7对[具体对象未提及]的生防效率。进一步研究表明，联合使用组中ZK7在番茄根际土壤和根系中的定殖显著高于对照组。通过气相色谱法测定信号物质的影响。发现己醛、（E）-2-己烯醛、糠醛、苯甲醛和2-壬酮这五种化合物在联合施用处理的土壤中产生的挥发性化合物中有显著变化。苯甲醛和2-壬酮的变化是导致真菌ZK7在番茄根中定殖增加的主要因素。糠醛是影响真菌ZK7在土壤中定殖的主要挥发性物质。B16和ZK7联合使用改变了挥发性范围，导致生防真菌定殖增加，并提高了对线虫的生防效率。这种联合模式可用于提高生防真菌防治根结线虫的能力。
