Foliar Application of Vegetal-Derived Bioactive Compounds Stimulates the Growth of Beneficial Bacteria and Enhances Microbiome Biodiversity in Lettuce

Many studies on plant biostimulants and organic fertilizers have been focused on the ability of these products to increase crop productivity and ameliorate crop tolerance to abiotic stresses. However, little information is available on their effect on plant microbiota, whereas it is well known that...

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Vydáno v:	Frontiers in plant science Ročník 10; s. 60
Hlavní autoři:	Luziatelli, Francesca, Ficca, Anna Grazia, Colla, Giuseppe, Baldassarre Švecová, Eva, Ruzzi, Maurizio
Médium:	Journal Article
Jazyk:	angličtina
Vydáno:	Switzerland Frontiers Media SA 05.02.2019 Frontiers Media S.A
Témata:	Amino acids Bacteria Bioactive compounds Biodiversity Biological control Carbohydrates Copper Crop production Culture Enrichment Fertilizers Foliar applications Gene polymorphism Health risks Hydrolysates Lactuca sativa L Legumes Lettuce Microbiomes Microbiota Micronutrients Microorganisms Next-generation sequencing Nitrogen Organic compounds Organic fertilizers Pathogens Peptides Plant bacterial diseases Plant extracts Plant growth plant growth-promoting bacteria plant microbiota Plant Science Plants Polymorphism Probiotics Productivity Proteins Restriction fragment length polymorphism Seeds terminal restriction fragment length polymorphism Tropical plants vegetal protein hydrolysates Italy Lactuca sativa L biocontrol activity next generation sequencing vegetal protein hydrolysates plant microbiota plant growth-promoting bacteria terminal restriction fragment length polymorphism
ISSN:	1664-462X, 1664-462X
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Shrnutí:	Many studies on plant biostimulants and organic fertilizers have been focused on the ability of these products to increase crop productivity and ameliorate crop tolerance to abiotic stresses. However, little information is available on their effect on plant microbiota, whereas it is well known that microorganisms associated with plant play crucial roles on the health and productivity of their host. The aim of this study was to evaluate the effect of a vegetal-derived protein hydrolysate (PH), a vegetal-derived PH enriched with copper (Cu-PH), and a tropical plant extract enriched with micronutrients (PE) on shoot growth and the epiphytic bacterial population of lettuce plants and the ability of these products to enhance the growth of beneficial or harmful bacteria. The three plant-derived products enhanced shoot biomass of lettuce plants indicating a biostimulant effect of the products. Data obtained using culture-independent (Terminal Restriction Fragment Length Polymorphism and Next Generation Sequencing) and culture-dependent approaches indicated that foliar application of commercial products altered the composition of the microbial population and stimulated the growth of specific bacteria belonging to , , , and genus. Data presented in this work demonstrated that some of these strains exhibited potential plant growth-promoting properties and/or biocontrol activity against fungi and bacteria phytopathogens including , , and species. No indication of potential health risks associated to the enrichment of human or plant bacterial pathogens emerged by the analysis of the microbiota of treated and no-treated plants. Overall, the findings presented in this study indicate that the commercial organic-based products can enhance the growth of beneficial bacteria occurring in the plant microbiota and signals produced by these bacteria can act synergistically with the organic compounds to enhance plant growth and productivity.
Bibliografie:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 14 content type line 23 Reviewed by: Antonio Ferrante, University of Milan, Italy; Andrea Ertani, University of Padova, Italy This article was submitted to Crop and Product Physiology, a section of the journal Frontiers in Plant Science Edited by: Martine Dorais, Laval University, Canada
ISSN:	1664-462X 1664-462X
DOI:	10.3389/fpls.2019.00060