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Effects of Magnesium Oxide and Magnesium Hydroxide Microparticle Foliar Treatment on Tomato PR Gene Expression and Leaf Microbiome

Recently, metal oxides and magnesium hydroxide nanoparticles (NPs) with high surface-to-volume ratios were shown to possess antibacterial properties with applications in biomedicine and agriculture. To assess recent observations from field trials on tomatoes showing resistance to pathogen attacks, p...

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Autores principales: Andreadelli, Aggeliki, Petrakis, Spyros, Tsoureki, Antiopi, Tsiolas, George, Michailidou, Sofia, Baltzopoulou, Penelope, van Merkestein, Robert, Hodgson, Philip, Sceats, Mark, Karagiannakis, George, Makris, Antonios M.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8228823/
https://www.ncbi.nlm.nih.gov/pubmed/34199815
http://dx.doi.org/10.3390/microorganisms9061217
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author Andreadelli, Aggeliki
Petrakis, Spyros
Tsoureki, Antiopi
Tsiolas, George
Michailidou, Sofia
Baltzopoulou, Penelope
van Merkestein, Robert
Hodgson, Philip
Sceats, Mark
Karagiannakis, George
Makris, Antonios M.
author_facet Andreadelli, Aggeliki
Petrakis, Spyros
Tsoureki, Antiopi
Tsiolas, George
Michailidou, Sofia
Baltzopoulou, Penelope
van Merkestein, Robert
Hodgson, Philip
Sceats, Mark
Karagiannakis, George
Makris, Antonios M.
author_sort Andreadelli, Aggeliki
collection PubMed
description Recently, metal oxides and magnesium hydroxide nanoparticles (NPs) with high surface-to-volume ratios were shown to possess antibacterial properties with applications in biomedicine and agriculture. To assess recent observations from field trials on tomatoes showing resistance to pathogen attacks, porous micron-scale particles composed of nano-grains of MgO were hydrated and sprayed on the leaves of healthy tomato (Solanum lycopersicum) plants in a 20-day program. The results showed that the spray induced (a) a modest and selective stress gene response that was consistent with the absence of phytotoxicity and the production of salicylic acid as a signalling response to pathogens; (b) a shift of the phylloplane microbiota from near 100% dominance by Gram (−) bacteria, leaving extremophiles and cyanobacteria to cover the void; and (c) a response of the fungal leaf phylloplane that showed that the leaf epiphytome was unchanged but the fungal load was reduced by about 70%. The direct microbiome changes together with the low level priming of the plant’s immune system may explain the previously observed resistance to pathogen assaults in field tomato plants sprayed with the same hydrated porous micron-scale particles.
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spelling pubmed-82288232021-06-26 Effects of Magnesium Oxide and Magnesium Hydroxide Microparticle Foliar Treatment on Tomato PR Gene Expression and Leaf Microbiome Andreadelli, Aggeliki Petrakis, Spyros Tsoureki, Antiopi Tsiolas, George Michailidou, Sofia Baltzopoulou, Penelope van Merkestein, Robert Hodgson, Philip Sceats, Mark Karagiannakis, George Makris, Antonios M. Microorganisms Article Recently, metal oxides and magnesium hydroxide nanoparticles (NPs) with high surface-to-volume ratios were shown to possess antibacterial properties with applications in biomedicine and agriculture. To assess recent observations from field trials on tomatoes showing resistance to pathogen attacks, porous micron-scale particles composed of nano-grains of MgO were hydrated and sprayed on the leaves of healthy tomato (Solanum lycopersicum) plants in a 20-day program. The results showed that the spray induced (a) a modest and selective stress gene response that was consistent with the absence of phytotoxicity and the production of salicylic acid as a signalling response to pathogens; (b) a shift of the phylloplane microbiota from near 100% dominance by Gram (−) bacteria, leaving extremophiles and cyanobacteria to cover the void; and (c) a response of the fungal leaf phylloplane that showed that the leaf epiphytome was unchanged but the fungal load was reduced by about 70%. The direct microbiome changes together with the low level priming of the plant’s immune system may explain the previously observed resistance to pathogen assaults in field tomato plants sprayed with the same hydrated porous micron-scale particles. MDPI 2021-06-04 /pmc/articles/PMC8228823/ /pubmed/34199815 http://dx.doi.org/10.3390/microorganisms9061217 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Andreadelli, Aggeliki
Petrakis, Spyros
Tsoureki, Antiopi
Tsiolas, George
Michailidou, Sofia
Baltzopoulou, Penelope
van Merkestein, Robert
Hodgson, Philip
Sceats, Mark
Karagiannakis, George
Makris, Antonios M.
Effects of Magnesium Oxide and Magnesium Hydroxide Microparticle Foliar Treatment on Tomato PR Gene Expression and Leaf Microbiome
title Effects of Magnesium Oxide and Magnesium Hydroxide Microparticle Foliar Treatment on Tomato PR Gene Expression and Leaf Microbiome
title_full Effects of Magnesium Oxide and Magnesium Hydroxide Microparticle Foliar Treatment on Tomato PR Gene Expression and Leaf Microbiome
title_fullStr Effects of Magnesium Oxide and Magnesium Hydroxide Microparticle Foliar Treatment on Tomato PR Gene Expression and Leaf Microbiome
title_full_unstemmed Effects of Magnesium Oxide and Magnesium Hydroxide Microparticle Foliar Treatment on Tomato PR Gene Expression and Leaf Microbiome
title_short Effects of Magnesium Oxide and Magnesium Hydroxide Microparticle Foliar Treatment on Tomato PR Gene Expression and Leaf Microbiome
title_sort effects of magnesium oxide and magnesium hydroxide microparticle foliar treatment on tomato pr gene expression and leaf microbiome
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8228823/
https://www.ncbi.nlm.nih.gov/pubmed/34199815
http://dx.doi.org/10.3390/microorganisms9061217
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