Screening of Antagonistic Bacteria from Endophytes against Walnut Blight Pathogen Xanthomonas arboricola pv. juglandis
Walnut blight caused by Xanthomonas arboricola pv. juglandis (Xaj) is the most important bacterial disease in walnut production worldwide. To seek biocontrol agents against Xaj, we screened 152 endophytic bacteria isolated from 87 plants. Through dual-culture method screening, we obtained four antag...
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Journal of Pure and Applied Microbiology
2021-09-01
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doaj-6064ce437b1f49e4b4790feea71e5e692021-09-24T12:18:57ZengJournal of Pure and Applied MicrobiologyJournal of Pure and Applied Microbiology0973-75102581-690X2021-09-011531384139210.22207/JPAM.15.3.30Screening of Antagonistic Bacteria from Endophytes against Walnut Blight Pathogen Xanthomonas arboricola pv. juglandisBenzhong Fuhttps://orcid.org/0000-0001-5068-7240Lei YuBokai WangCao ZhengWalnut blight caused by Xanthomonas arboricola pv. juglandis (Xaj) is the most important bacterial disease in walnut production worldwide. To seek biocontrol agents against Xaj, we screened 152 endophytic bacteria isolated from 87 plants. Through dual-culture method screening, we obtained four antagonistic bacteria, ATE17, BME17, CIE17, and OFE17 which were isolated from Amaranthus tricolor, Bambusa multiplex, Canna indica, and Osmanthus fragrans plants respectively. The inhibition ratios of ATE18, BME17, CIE18, and OFE17 against Xaj on plates were 1.5, 1.6, 1.3, and 1.6, respectively. These indicated they have good biocontrol potential for walnut bacterial blight. Subsequently, the four endophytic bacteria were identified by morphology, Gram staining, Microbial Identification System (fatty acid methyl ester analysis), as well as 16S rDNA and gyrB sequencing. It turns out that all four strains were identified as Bacillus sp. Furthermore, the two strains BME17 and OFE17 can suppress multiple plant fungal pathogens and bacterial pathogens on plates.https://microbiologyjournal.org/screening-of-antagonistic-bacteria-from-endophytes-against-walnut-blight-pathogen-xanthomonas-arboricola-pv-juglandis/antagonismbacillus sp.bambusa multiplexbiocontrol agentendophytic bacteriaosmanthus fragrans |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Benzhong Fu Lei Yu Bokai Wang Cao Zheng |
spellingShingle |
Benzhong Fu Lei Yu Bokai Wang Cao Zheng Screening of Antagonistic Bacteria from Endophytes against Walnut Blight Pathogen Xanthomonas arboricola pv. juglandis Journal of Pure and Applied Microbiology antagonism bacillus sp. bambusa multiplex biocontrol agent endophytic bacteria osmanthus fragrans |
author_facet |
Benzhong Fu Lei Yu Bokai Wang Cao Zheng |
author_sort |
Benzhong Fu |
title |
Screening of Antagonistic Bacteria from Endophytes against Walnut Blight Pathogen Xanthomonas arboricola pv. juglandis |
title_short |
Screening of Antagonistic Bacteria from Endophytes against Walnut Blight Pathogen Xanthomonas arboricola pv. juglandis |
title_full |
Screening of Antagonistic Bacteria from Endophytes against Walnut Blight Pathogen Xanthomonas arboricola pv. juglandis |
title_fullStr |
Screening of Antagonistic Bacteria from Endophytes against Walnut Blight Pathogen Xanthomonas arboricola pv. juglandis |
title_full_unstemmed |
Screening of Antagonistic Bacteria from Endophytes against Walnut Blight Pathogen Xanthomonas arboricola pv. juglandis |
title_sort |
screening of antagonistic bacteria from endophytes against walnut blight pathogen xanthomonas arboricola pv. juglandis |
publisher |
Journal of Pure and Applied Microbiology |
series |
Journal of Pure and Applied Microbiology |
issn |
0973-7510 2581-690X |
publishDate |
2021-09-01 |
description |
Walnut blight caused by Xanthomonas arboricola pv. juglandis (Xaj) is the most important bacterial disease in walnut production worldwide. To seek biocontrol agents against Xaj, we screened 152 endophytic bacteria isolated from 87 plants. Through dual-culture method screening, we obtained four antagonistic bacteria, ATE17, BME17, CIE17, and OFE17 which were isolated from Amaranthus tricolor, Bambusa multiplex, Canna indica, and Osmanthus fragrans plants respectively. The inhibition ratios of ATE18, BME17, CIE18, and OFE17 against Xaj on plates were 1.5, 1.6, 1.3, and 1.6, respectively. These indicated they have good biocontrol potential for walnut bacterial blight. Subsequently, the four endophytic bacteria were identified by morphology, Gram staining, Microbial Identification System (fatty acid methyl ester analysis), as well as 16S rDNA and gyrB sequencing. It turns out that all four strains were identified as Bacillus sp. Furthermore, the two strains BME17 and OFE17 can suppress multiple plant fungal pathogens and bacterial pathogens on plates. |
topic |
antagonism bacillus sp. bambusa multiplex biocontrol agent endophytic bacteria osmanthus fragrans |
url |
https://microbiologyjournal.org/screening-of-antagonistic-bacteria-from-endophytes-against-walnut-blight-pathogen-xanthomonas-arboricola-pv-juglandis/ |
work_keys_str_mv |
AT benzhongfu screeningofantagonisticbacteriafromendophytesagainstwalnutblightpathogenxanthomonasarboricolapvjuglandis AT leiyu screeningofantagonisticbacteriafromendophytesagainstwalnutblightpathogenxanthomonasarboricolapvjuglandis AT bokaiwang screeningofantagonisticbacteriafromendophytesagainstwalnutblightpathogenxanthomonasarboricolapvjuglandis AT caozheng screeningofantagonisticbacteriafromendophytesagainstwalnutblightpathogenxanthomonasarboricolapvjuglandis |
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1717369829905661952 |