Biocontrol Potential of Endophytic Bacillus Spp. Associated to Wild Solanaceous Species and Their Secondary Metabolites Against Various Potato (Solanum Tuberosum L.) Storage Diseases DOI
Hayfa Jabnoun‐Khiareddine, Rania Aydi Ben Abdallah,

Abeer Hassem

et al.

Published: Jan. 1, 2024

Fusarium dry rot, Pythium leak and Southern blight diseases caused by various species, aphanidermatum, Sclerotium rolfsii, respectively, are responsible for important tuber storage losses in Tunisia. In the present study, six strains belonging to five Bacillus isolated from wild solanaceous plants, were screened their abilities inhibit potato rot-causing pathogens vitro on tubers. Based dual culture assays, whole cell suspensions of B. tequilensis SV39 SV104, subtilis SV41, methylotrophicus SV44 amyloliquefaciens subsp. plantarum SV65 exhibited potent antifungal activity against target soilborne phytopathogens. Significant inhibitory effects also induced cell-free filtrates, butanolic chloroform extracts depending pathogens, concentration used bacterial tested. The gas chromatography-mass spectrometry (GC–MS) analysis extract revealed highest relative abundance phthalic acid derivatives as major volatile compounds. current study sheds light ability all reduce severity, about 59-61% 51-58%, estimated via lesion diameter or rot penetration, respectively. Furthermore, SV104 most effective bio-agents controlling 64.06 57.31%, while (B. tequilensis), SV41 subtilis) plantarum) reducing penetration 54-63%. application is great interest an efficient safe control diseases.

Language: Английский

Harnessing Plant’s Arsenal: Essential Oils as Promising Tools for Sustainable Management of Potato Late Blight Disease Caused by Phytophthora infestans—A Comprehensive Review DOI Creative Commons
Florian Martini, M. Haïssam Jijakli, É. Gontier

et al.

Molecules, Journal Year: 2023, Volume and Issue: 28(21), P. 7302 - 7302

Published: Oct. 27, 2023

Potato late blight disease is caused by the oomycete Phytophthora infestans and listed as one of most severe phytopathologies on Earth. The current environmental issues require new methods pest management. For that reason, plant secondary metabolites and, in particular, essential oils (EOs) have demonstrated promising potential pesticide alternatives. This review presents up-to-date work accomplished using EOs against P. at various experimental scales, from vitro to vivo. Additionally, some cellular mechanisms action spp., especially towards cell membranes, are also presented for a better understanding anti-oomycete activities. Finally, challenges constraints encountered development EOs-based biopesticides highlighted.

Language: Английский

Citations

3
Multi-species endophytic Bacillus for improved control of potato soilborne and tuber-borne diseases in Tunisia: from laboratory to field conditions DOI Creative Commons
Hayfa Jabnoun‐Khiareddine,

Rania Aydi-Ben-Abdallah,

Mejda Daami‐Remadi

et al.

Egyptian Journal of Biological Pest Control, Journal Year: 2023, Volume and Issue: 33(1)

Published: Nov. 7, 2023

Abstract Background Due to the soilborne and tuber-borne nature of their causative agents, Fusarium wilt, Rhizoctonia root canker black dot diseases are still leading serious problems in potato production Tunisia worldwide. Among endophytic bacteria, genus Bacillus is one most exploited microbial groups known as potent biocontrol agents against several diseases. In present study, six strains belonging five species were screened for abilities inhibit wilt pathogens vitro, vivo under natural conditions over three cropping seasons promote plant growth. Results Based on dual-culture assays, whole-cell suspensions SV39 SV104 ( tequilensis ), SV41 B. subtilis SV44 methylotrophicus ) SV65 amyloliquefaciens subsp. plantarum exhibited antifungal activity important phytopathogens with ~ 65 70% inhibition rates. Significant rates also induced by cell-free culture filtrates, butanolic chloroformic extracts depending target pathogens, concentration used strain tested. pot experiment, a decrease severity, ranging from 43 65% compared inoculated untreated control, was all spp. strain-based treatments, while SV39-, S42- SV65-based treatments effective suppressing 50–53 65–52%, severity relative vascular discoloration extent F. oxysporum f. sp. tuberosi , respectively, positive control. This potential associated an enhancement growth parameters. Field studies indicated that soil treatment had significantly controlled fungal improved at least two and/or parameters seasons. SV41-, SV44- SV104-based resulted significant increase tuber yield season. Conclusion These could be combinations introduced other existing practices order provide supplemental control promotion organic or conventional systems.

Language: Английский

Citations

3
Identification and characterization of siderophilic biocontrol strain SL-44 combined with whole genome DOI

Huichun Xiang,

Yanhui He, Xiaobo Wang

et al.

Environmental Science and Pollution Research, Journal Year: 2023, Volume and Issue: 30(22), P. 62104 - 62120

Published: March 20, 2023

Language: Английский

Citations

1
Evaluation of Bacillus subtilis Czk1 Metabolites by LC–MS/MS and Their Antifungal Potential against Pyrrhoderma noxium Causing Brow Rot Disease DOI Creative Commons
Yanqiong Liang, Weihuai Wu, Rui Li

et al.

Agriculture, Journal Year: 2023, Volume and Issue: 13(7), P. 1396 - 1396

Published: July 14, 2023

Brown rot disease caused by Pyrrhoderma noxium is a widespread that severely affects the roots of rubber trees (Hevea brasiliensis Muell. Arg.). The economic losses, along with environmental and health problems arising from use control chemicals, have raised interest scholars to explore biological agents for effective fungal pathogen P. noxium. Here, inhibition effect culture filtrate B. subtilis Czk1 on was demonstrated. findings indicate antifungal activity this strain mediated wholly or partly compounds produced in filtrate. combined liquid chromatography–tandem mass spectrometry assays rapidly identified Czk1. Metabolic profiles were assessed used identify major metabolites based scores variable importance projection plot principal component analysis. A total 296 differential screened, including 208 positive ion mode 88 negative mode. Two key metabolites, diacetyl trans-2-octenoic acid, screened 29 assays. median concentration (EC50) acid 0.9075 mg/mL 4.8213 mg/mL, respectively. can disrupt internal structure pathogenic mycelium, thereby impeding its growth. This study expected contribute existing knowledge Czk1-produced their future applications. also provide new biopreservative perspective unexplored as biocontrol agent.

Language: Английский

Citations

1
Biocontrol Potential of Endophytic Bacillus Spp. Associated to Wild Solanaceous Species and Their Secondary Metabolites Against Various Potato (Solanum Tuberosum L.) Storage Diseases DOI
Hayfa Jabnoun‐Khiareddine, Rania Aydi Ben Abdallah,

Abeer Hassem

et al.

Published: Jan. 1, 2024

Fusarium dry rot, Pythium leak and Southern blight diseases caused by various species, aphanidermatum, Sclerotium rolfsii, respectively, are responsible for important tuber storage losses in Tunisia. In the present study, six strains belonging to five Bacillus isolated from wild solanaceous plants, were screened their abilities inhibit potato rot-causing pathogens vitro on tubers. Based dual culture assays, whole cell suspensions of B. tequilensis SV39 SV104, subtilis SV41, methylotrophicus SV44 amyloliquefaciens subsp. plantarum SV65 exhibited potent antifungal activity against target soilborne phytopathogens. Significant inhibitory effects also induced cell-free filtrates, butanolic chloroform extracts depending pathogens, concentration used bacterial tested. The gas chromatography-mass spectrometry (GC–MS) analysis extract revealed highest relative abundance phthalic acid derivatives as major volatile compounds. current study sheds light ability all reduce severity, about 59-61% 51-58%, estimated via lesion diameter or rot penetration, respectively. Furthermore, SV104 most effective bio-agents controlling 64.06 57.31%, while (B. tequilensis), SV41 subtilis) plantarum) reducing penetration 54-63%. application is great interest an efficient safe control diseases.

Language: Английский

Citations

0