Control of Southern Root-knot Nematodes on Tomato and Regulation of Soil Bacterial Community by Biofumigation with Zanthoxylum bungeanum Seed  

作　　者：Xiaoyun Wang Wencong Shi Jilei Wang Zheng Gao Shuang Li Ningxin Wang Qinghua Shi 

机构地区：[1]College of Horticulture Science and Engineering,Shandong Agricultural University,Tai’an 271018,China [2]College of Life Sciences,Shandong Agricultural University,Tai’an 271018,China [3]College of Plant Protection,Shandong Agricultural University,Tai’an 271018,China [4]State Key Laboratory of Crop Biology,Shandong Agricultural University,Tai’an 271018,China [5]Shandong Liangjian Bioengineering Co.,Ltd.,Jinan 271100,China

出　　处：《Horticultural Plant Journal》2021年第1期49-58,共10页园艺学报（英文版）

基　　金：This project was supported by the Key Research and Development Program of Shandong Province(Grant No.2017GNC13104);Major Agricultural Application Technology Innovation Project of Shandong Province(2018);Shandong Agriculture Research System(Grant No.SDAIT-05-05);Industrial upgrading project of agricultural science of Shandong Province(2017).

摘　　要：Biofumigation is an environmentally friendly strategy used to control nematodes and plant diseases.The volatile oil of Zanthoxylum bungeanum has high insecticidal and antibacterial activity.However,it is not known if the seed of Z.bungeanum is a suitable material for biofumigation to control southern root-knot nematodes(SRKN)on tomato,and how it may regulate the soil bacterial community structure.We used pot experiments in the greenhouse to determine the effects of Z.bungeanum seeds on SRKN,plant growth parameters,soil physicochemical and microbial characteristics.A total of 26 volatile components,including nematicidally active substances,were identified from Z.bungeanum seeds.Z.bungeanum seed biofumigation significantly reduced the SRKN population by 88.89%and 81.55%on the 50th and 100th day after transplanting,respectively.Compared to the control,the total soluble sugar,soluble solids,soluble protein,titratable acid,root activity and the fruit yield per tomato plant increased significantly.The content of soil alkali-hydrolyzed nitrogen,available potassium and the soil enzyme activities were also significantly increased.The soil bacterial diversity and the co-occurrence network complexity were increased by Z.bungeanum seed biofumigation.Relativelymore keystone OTUs in biofumigation soil had potential plant growth-promoting capabilities.The function of Z.bungeanum seed increasing tomato production in SRKN-infected soil depends on directly killing SRKN and improving soil properties.These results indicate that Z.bungeanum seed can be used as both a nematicide and a high quality organic fertilizer in tomato production.

关 键 词：biofumigant Zanthoxylum bungeanum seed root-knot nematode TOMATO soil bacterial community 

分 类 号：S432.45[农业科学—植物病理学]