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Dhevi V. Sundar R, Arunachalam S. Endophytic fungi of Tradescantia pallida mediated targeting of Multi-Drug resistant human pathogens. Saudi J Biol Sci 2024; 31:103937. [PMID: 38352729 PMCID: PMC10863426 DOI: 10.1016/j.sjbs.2024.103937] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2023] [Revised: 01/09/2024] [Accepted: 01/19/2024] [Indexed: 02/16/2024] Open
Abstract
Antimicrobial resistance (AMR) has emerged as one of the most serious worldwide public health issues of the twenty-first century. The expeditious rise of AMR has urged the development of new, natural effective therapeutic strategies against drug-resistant pathogens. Endophytic fungi, which inhabit distinctive environments like endosymbiotic relationships with plants, are gaining interest as alternative reservoirs for novel compounds that exhibit a broad range of chemical diversity and unique modes of action by releasing a variety of secondary metabolites with antimicrobial properties. The objective of the current research was to isolate and identify endophytic fungal species from leaves of Tradescantia pallida and to investigate their antagonistic effects on Multi-Drug-Resistant human pathogens. Endophytic fungus TPL11 and TPL14 showed maximum inhibition in agar plug and agar well diffusion assay. The ethyl acetate crude extract effectively suppressed growth of MRSA (Methicillin-resistant Staphylococcus aureus) ATCC 43300,700699 strains and VRE (Vancomycin-resistant Enterococcus) with the Inhibition zone of 22 ± 0.05, 23 ± 0.11 and 24 ± 0.11 mm respectively with minimum inhibitory concentration (MIC) of 3.125 µg/mL. Whereas TPL11 fungus revealed antibiosis of 22 ± 0.05 and 21 ± 0.15 mm against MRSA(ATCC 43300,700699) and 24 ± 0.05 mm for VRE with MIC of 6.25,3.125 and 1.56 μg/mL respectively. The MIC (Minimum inhibitory concentration) index further confirmed that both the extracts were bacteriostatic against MRSA and bactericidal against VRE. The isolates TPL11 and TPL14 were identified as Fusarium oxysporum and Nigrospora sphaerica by 18S rRNA internal transcribed spacer (ITS) sequencing. To our insight, it is the first report to reveal the presence of F.oxysporum and N.sphaerica in T.pallida and their antibacterial activity.
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Affiliation(s)
- Ranjitha Dhevi V. Sundar
- School of Biosciences and Technology, Vellore Institute of Technology, Vellore 14, India
- VIT School of Agricultural Innovations and Advanced Learning, VIT, Vellore, India
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Khadiri M, Boubaker H, Laasli SE, Farhaoui A, Ezrari S, Radouane N, Radi M, Askarne L, Barka EA, Lahlali R. Unlocking Nature's Secrets: Molecular Insights into Postharvest Pathogens Impacting Moroccan Apples and Innovations in the Assessment of Storage Conditions. PLANTS (BASEL, SWITZERLAND) 2024; 13:553. [PMID: 38498518 PMCID: PMC10891559 DOI: 10.3390/plants13040553] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Revised: 01/29/2024] [Accepted: 02/14/2024] [Indexed: 03/20/2024]
Abstract
Apple production holds a prominent position in Morocco's Rosaceae family. However, annual production can fluctuate due to substantial losses caused by fungal diseases affecting stored apples. Our findings emphasize that the pre-storage treatment of apples, disinfection of storage facilities, box type, and fruit sorting are pivotal factors affecting apple losses during storage. Additionally, the adopted preservation technique was significantly correlated with the percentage of damage caused by fungal infections. Blue mold accounts for nearly three-quarters of the diseases detected, followed by gray rot with a relatively significant incidence. This study has revealed several fungal diseases affecting stored apples caused by pathogens such as Penicillium expansum, Botrytis cinerea, Alternaria alternata, Trichothecium roseum, Fusarium avenaceum, Cadophora malorum, and Neofabraea vagabunda. Notably, these last two fungal species have been reported for the first time in Morocco as pathogens of stored apples. These data affirm that the high losses of apples in Morocco, attributed primarily to P. expansum and B. cinerea, pose a significant threat in terms of reduced production and diminished fruit quality. Hence, adopting controlled atmosphere storage chambers and implementing good practices before apple storage is crucial.
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Affiliation(s)
- Mohammed Khadiri
- Phytopathology Unit, Department of Plant Protection, Ecole Nationale d’Agriculture de Meknès, Km10, Rte Haj Kaddour, BP S/40, Meknès 50001, Morocco; (M.K.); (S.-E.L.); (A.F.)
- Laboratoire de Biotechnologies Microbiennes et Protection des Végétaux, Faculté des Sciences, Université Ibn Zhor, BP 8106, Agadir 80000, Morocco; (H.B.); (L.A.)
| | - Hassan Boubaker
- Laboratoire de Biotechnologies Microbiennes et Protection des Végétaux, Faculté des Sciences, Université Ibn Zhor, BP 8106, Agadir 80000, Morocco; (H.B.); (L.A.)
| | - Salah-Eddine Laasli
- Phytopathology Unit, Department of Plant Protection, Ecole Nationale d’Agriculture de Meknès, Km10, Rte Haj Kaddour, BP S/40, Meknès 50001, Morocco; (M.K.); (S.-E.L.); (A.F.)
| | - Abdelaaziz Farhaoui
- Phytopathology Unit, Department of Plant Protection, Ecole Nationale d’Agriculture de Meknès, Km10, Rte Haj Kaddour, BP S/40, Meknès 50001, Morocco; (M.K.); (S.-E.L.); (A.F.)
- Department of Biology, Laboratory of Biotechnology and Valorization of Bio-Resources (BioVaR), Faculty of Sciences, Moulay Ismail University, BP 11201, Zitoune, Meknes 50000, Morocco
| | - Said Ezrari
- Microbiology Unit, Laboratory of Bioresources, Biotechnology, Ethnopharmacology and Health, Faculty of Medicine and Pharmacy Oujda, University Mohammed Premier, Oujda 60000, Morocco
| | - Nabil Radouane
- African Genome Center, Mohammed VI Polytechnic University (UM6P), Ben Guerir 43150, Morocco;
| | - Mohammed Radi
- Phytopathology Unit, Department of Plant Protection, Ecole Nationale d’Agriculture de Meknès, Km10, Rte Haj Kaddour, BP S/40, Meknès 50001, Morocco; (M.K.); (S.-E.L.); (A.F.)
- Laboratory of Environment and Valorization of Microbial and Plant Resources, Faculty of Sciences, Moulay Ismail University, BP 11201, Zitoune, Meknes 50000, Morocco
| | - Latifa Askarne
- Laboratoire de Biotechnologies Microbiennes et Protection des Végétaux, Faculté des Sciences, Université Ibn Zhor, BP 8106, Agadir 80000, Morocco; (H.B.); (L.A.)
| | - Essaid Ait Barka
- Induced Resistance and Plant Biosection Research Unit-EA 4707-USC INRAE1488, Reims Cham-pagne-Ardenne University, 51687 Reims, France
| | - Rachid Lahlali
- Phytopathology Unit, Department of Plant Protection, Ecole Nationale d’Agriculture de Meknès, Km10, Rte Haj Kaddour, BP S/40, Meknès 50001, Morocco; (M.K.); (S.-E.L.); (A.F.)
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