Chryseobacterium nankingense sp. nov. WR21 effectively suppresses Ralstonia solanacearum growth via intensive root exudates competition

Previous studies demonstrated that the Chryseobacterium sp. WR21 could effectively control the bacterial wilt disease caused by Ralstonia solanacearum through effective root colonization. The strain WR21 exhibited a low level of DNA homology with Chryseobacterium strains DSM 15235 T (24.1%), DSM 177...

Full description

Saved in:
Bibliographic Details
Published inBioControl (Dordrecht, Netherlands) Vol. 62; no. 4; pp. 567 - 577
Main Authors Huang, Jianfeng, Wei, Zhong, Hu, Jie, Yang, Chunlan, Gu, Yi’an, Mei, Xinlan, Shen, Qirong, Xu, Yangchun, Riaz, Kashif
Format Journal Article
LanguageEnglish
Published Dordrecht Springer Netherlands 01.08.2017
Springer Nature B.V
Springer Verlag
Subjects
Agriculture
Animal Biochemistry
Animal Ecology
Antagonism
Bacteria
Behavioral Sciences
Biodiversity and Ecology
Biological control
Biomedical and Life Sciences
Colonization
Competition
Deoxyribonucleic acid
Disease control
DNA
Entomology
Environmental Sciences
Exudates
Exudation
Growth rate
Homology
In vitro methods and tests
Life Sciences
Low level
New species
Nutrients
Original Article
Pathogens
Plant Pathology
Tomatoes
Wilt
Resource competition
Bacterial wilt
Root exudates
Biocontrol
Online AccessGet full text

Cover

More Information
Summary:Previous studies demonstrated that the Chryseobacterium sp. WR21 could effectively control the bacterial wilt disease caused by Ralstonia solanacearum through effective root colonization. The strain WR21 exhibited a low level of DNA homology with Chryseobacterium strains DSM 15235 T (24.1%), DSM 17724 T (24.8%), and DSM 18014 T (10.4%), suggesting that WR21 may represent a novel species, for which the name Chryseobacterium nankingense sp. nov. is proposed. The in vitro competition experiments with strain WR21 indicated it significantly inhibited growth of the pathogen in co-culture with six of nine tested nutrients (e.g. root exudates) that could be utilized by strain WR21 and R. solanacearum . Similar trends were observed in co-culturing experiments using tissue exudates of tomato. A positive relationship (r = 0.785) was noticed between the differences in the average growth rate of both strains and the disease suppression effects. In conclusion, Chryseobacterium nankingense sp. nov. WR21 exhibits antagonism through nutrient competition that might be used for achieving biocontrol of Ralstonia solanacearum induced wilts.
ISSN:1386-6141
1573-8248
DOI:10.1007/s10526-017-9812-1