Magnesium Hydroxide Microparticle Treatment Potently Inhibits <i>Venturia oleaginea</i> Pathogenesis on Olives
Olive trees worldwide suffer from a number of devastating fungal diseases that affect production. One such serious disease is olive leaf spot caused by <i>Venturia oleaginea</i>. Recently, we applied magnesium hydroxide porous micron-scale particles (PMPs) on tomatoes and observed potent...
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MDPI AG
2024-10-01
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| Series: | International Journal of Plant Biology |
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| Online Access: | https://www.mdpi.com/2037-0164/15/4/71 |
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| author | Aggeliki Andreadelli Arthur Fau Antiopi Tsoureki Elisavet Papa Katerina Pliatsika Spyros Petrakis Penelope Baltzopoulou Chrysa Pagkoura Andreas Giannopoulos George Karagiannakis Antonios M. Makris |
| author_facet | Aggeliki Andreadelli Arthur Fau Antiopi Tsoureki Elisavet Papa Katerina Pliatsika Spyros Petrakis Penelope Baltzopoulou Chrysa Pagkoura Andreas Giannopoulos George Karagiannakis Antonios M. Makris |
| author_sort | Aggeliki Andreadelli |
| collection | DOAJ |
| description | Olive trees worldwide suffer from a number of devastating fungal diseases that affect production. One such serious disease is olive leaf spot caused by <i>Venturia oleaginea</i>. Recently, we applied magnesium hydroxide porous micron-scale particles (PMPs) on tomatoes and observed potent antimicrobial activity, reducing the fungal load of the treated phyllosphere. To assess the effectiveness of the compound on olive fungal disease, we applied it for two consecutive seasons. One particular olive tree exhibited extreme manifestations of fungal disease and was destined for removal. A single application of Mg(OH)<sub>2</sub> PMP reversed all symptoms of the disease and eliminated the <i>Venturia</i> pathogen, curing the tree of disease. <i>Venturia oleaginea</i> appears to be exceptionally susceptible to treatment compared to other species in the fungal leaf community. The beneficial fungus <i>Aureobasidium pullulans</i> increased in relative abundance in all the sprayed trees. No toxicity and leaf loss were observed, and the compound retention exceeded 47 days. All trees sprayed showed drastic reductions in the total fungal load and compared favorably to the commercial copper compound. Spraying induced a moderate expression of key indicator genes associated with stress responses. No leaf chlorosis or shedding were observed. Overall, Mg(OH)<sub>2</sub> PMP treatment appears to be a highly promising tool for combating plant fungal disease. |
| format | Article |
| id | doaj-art-783c644865aa44bbb5dd63b3cbc72060 |
| institution | DOAJ |
| issn | 2037-0164 |
| language | English |
| publishDate | 2024-10-01 |
| publisher | MDPI AG |
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| series | International Journal of Plant Biology |
| spelling | doaj-art-783c644865aa44bbb5dd63b3cbc720602025-08-20T02:43:31ZengMDPI AGInternational Journal of Plant Biology2037-01642024-10-011541001102010.3390/ijpb15040071Magnesium Hydroxide Microparticle Treatment Potently Inhibits <i>Venturia oleaginea</i> Pathogenesis on OlivesAggeliki Andreadelli0Arthur Fau1Antiopi Tsoureki2Elisavet Papa3Katerina Pliatsika4Spyros Petrakis5Penelope Baltzopoulou6Chrysa Pagkoura7Andreas Giannopoulos8George Karagiannakis9Antonios M. Makris10Institute of Applied Biosciences, Centre for Research & Technology Hellas (CERTH), 6th km Charilaou-Thermi Road, Thermi, 57001 Thessaloniki, GreeceInstitute of Applied Biosciences, Centre for Research & Technology Hellas (CERTH), 6th km Charilaou-Thermi Road, Thermi, 57001 Thessaloniki, GreeceInstitute of Applied Biosciences, Centre for Research & Technology Hellas (CERTH), 6th km Charilaou-Thermi Road, Thermi, 57001 Thessaloniki, GreeceInstitute of Applied Biosciences, Centre for Research & Technology Hellas (CERTH), 6th km Charilaou-Thermi Road, Thermi, 57001 Thessaloniki, GreeceInstitute of Applied Biosciences, Centre for Research & Technology Hellas (CERTH), 6th km Charilaou-Thermi Road, Thermi, 57001 Thessaloniki, GreeceInstitute of Applied Biosciences, Centre for Research & Technology Hellas (CERTH), 6th km Charilaou-Thermi Road, Thermi, 57001 Thessaloniki, GreeceChemical Process & Energy Resources Institute, Centre for Research & Technology Hellas (CERTH), 6th km Charilaou-Thermi Road, Thermi, 57001 Thessaloniki, GreeceChemical Process & Energy Resources Institute, Centre for Research & Technology Hellas (CERTH), 6th km Charilaou-Thermi Road, Thermi, 57001 Thessaloniki, GreeceK+N Efthymiadis S.A., Industrial Area of Thessaloniki, 57022 Sindos, GreeceChemical Process & Energy Resources Institute, Centre for Research & Technology Hellas (CERTH), 6th km Charilaou-Thermi Road, Thermi, 57001 Thessaloniki, GreeceInstitute of Applied Biosciences, Centre for Research & Technology Hellas (CERTH), 6th km Charilaou-Thermi Road, Thermi, 57001 Thessaloniki, GreeceOlive trees worldwide suffer from a number of devastating fungal diseases that affect production. One such serious disease is olive leaf spot caused by <i>Venturia oleaginea</i>. Recently, we applied magnesium hydroxide porous micron-scale particles (PMPs) on tomatoes and observed potent antimicrobial activity, reducing the fungal load of the treated phyllosphere. To assess the effectiveness of the compound on olive fungal disease, we applied it for two consecutive seasons. One particular olive tree exhibited extreme manifestations of fungal disease and was destined for removal. A single application of Mg(OH)<sub>2</sub> PMP reversed all symptoms of the disease and eliminated the <i>Venturia</i> pathogen, curing the tree of disease. <i>Venturia oleaginea</i> appears to be exceptionally susceptible to treatment compared to other species in the fungal leaf community. The beneficial fungus <i>Aureobasidium pullulans</i> increased in relative abundance in all the sprayed trees. No toxicity and leaf loss were observed, and the compound retention exceeded 47 days. All trees sprayed showed drastic reductions in the total fungal load and compared favorably to the commercial copper compound. Spraying induced a moderate expression of key indicator genes associated with stress responses. No leaf chlorosis or shedding were observed. Overall, Mg(OH)<sub>2</sub> PMP treatment appears to be a highly promising tool for combating plant fungal disease.https://www.mdpi.com/2037-0164/15/4/71magnesium hydroxideporous micron particles (PMPs)plant signalingleaf microbiome<i>Venturia oleaginea</i>olive leaf spot disease |
| spellingShingle | Aggeliki Andreadelli Arthur Fau Antiopi Tsoureki Elisavet Papa Katerina Pliatsika Spyros Petrakis Penelope Baltzopoulou Chrysa Pagkoura Andreas Giannopoulos George Karagiannakis Antonios M. Makris Magnesium Hydroxide Microparticle Treatment Potently Inhibits <i>Venturia oleaginea</i> Pathogenesis on Olives International Journal of Plant Biology magnesium hydroxide porous micron particles (PMPs) plant signaling leaf microbiome <i>Venturia oleaginea</i> olive leaf spot disease |
| title | Magnesium Hydroxide Microparticle Treatment Potently Inhibits <i>Venturia oleaginea</i> Pathogenesis on Olives |
| title_full | Magnesium Hydroxide Microparticle Treatment Potently Inhibits <i>Venturia oleaginea</i> Pathogenesis on Olives |
| title_fullStr | Magnesium Hydroxide Microparticle Treatment Potently Inhibits <i>Venturia oleaginea</i> Pathogenesis on Olives |
| title_full_unstemmed | Magnesium Hydroxide Microparticle Treatment Potently Inhibits <i>Venturia oleaginea</i> Pathogenesis on Olives |
| title_short | Magnesium Hydroxide Microparticle Treatment Potently Inhibits <i>Venturia oleaginea</i> Pathogenesis on Olives |
| title_sort | magnesium hydroxide microparticle treatment potently inhibits i venturia oleaginea i pathogenesis on olives |
| topic | magnesium hydroxide porous micron particles (PMPs) plant signaling leaf microbiome <i>Venturia oleaginea</i> olive leaf spot disease |
| url | https://www.mdpi.com/2037-0164/15/4/71 |
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