The genus Lysobacter includes several bacterial species which show potential for being used in biological control of plant diseases. It was shown recently that type strains produce volatile organic compounds (VOCs) controlled the growth Phytophthora infestans vitro when bacteria were grown on a protein rich medium. In present study, capsici AZ78 (AZ78) has been tested its to VOCs may contribute bioactivity against soilborne pathogens. To this end, split Petri dish assays cultures have...

Plants host a complex microbiota inside or outside their tissues, and phyllosphere microorganisms can be influenced by environmental, nutritional agronomic factors. Rare sugars are defined as monosaccharides with limited availability in nature they metabolised only few certain microbial taxa. Among rare sugars, tagatose (TAG) is low-calories sweetener that stimulates inhibits beneficial pathogenic bacteria the human gut microbiota, respectively. Based on this differential effect...

Protein derivatives and carbohydrates can stimulate plant growth, increase stress tolerance activate defense mechanisms. However, these molecules also act as a nutritional substrate for microbial communities living on the phyllosphere possibly affect their biocontrol activity against pathogens. We investigated mechanisms of action protein derivative (nutrient broth, NB) grapevine downy mildew, specifically focusing effects foliar treatments stimulation composition features populations. NB...

Powdery mildew caused by Erysiphe necator is one of the most important grapevine diseases in several viticulture areas, and high fungicide input required to control it. However, numerous synthetic chemical pesticides are under scrutiny due concerns about their impact on human health environment. Biopesticides, such as biogenic elicitors, a promising alternative fungicides. Although studies have reported effective elicitors against diseases, efficacy field conditions has not been investigated...

Rare sugars are monosaccharides with limited availability in nature and their biological functions largely unknown. Among them, tagatose was developed as a low-calorie sweetener showed beneficial effects on human health. Tagatose is metabolised by only certain microbial taxa inhibits the growth of important crop pathogens (e.g. Phytophthora infestans), but its mode action responses The aim this study to understand against spp., final developing new plant protection products. inhibited P....

The use of natural bio-based compounds becomes an eco-friendly strategy to control plant diseases. Rare sugars would be promising as inducers "sweet immunity". present study aimed investigate the induced resistance grapevine leaves against Plasmopara viticola and Botrytis cinerea by a rare sugar-based product (IFP48) its active ingredient D-tagatose (TAG), in order elucidate molecular mechanism involved defense-related metabolic regulations before after pathogen challenge. Data showed that...

Tagatose is a rare sugar with no negative impacts on human health and selective inhibitory effects plant-associated microorganisms. inhibited mycelial growth negatively affected mitochondrial processes in Phytophthora infestans , but not cinnamomi . The aim of this study was to elucidate metabolic changes transcriptional reprogramming activated by P. response tagatose, order clarify the differential mechanisms tagatose species-specific reactions sugar. distinct growth, content amino acid...

Powdery mildew is a constant threat to cucumber production in soilless systems requiring the intensive use of chemical fungicides limit yield losses. However, toxicity risks for growers and food safety issues linked fungicide residues represent major concern crops with frequent extended harvest period, like cucumber, create an urgent need eco-friendly alternatives. The objective this study was assess effectiveness foliar root applications rare sugar tagatose, against naturally occurring...

Tagatose is a rare sugar metabolised by limited number of microorganisms that inhibits large spectrum phytopathogens. In particular, tagatose inhibited Phytophthora infestans growth and negatively affected mitochondrial processes. However, the possible effects on P. metabolism have not yet been investigated. The aim this study was to analyse impact in infestans, order better understand its mode action. with precise reprogramming carbohydrate involved decrease glucose, glucose-1-phosphate...

The substitution of synthetic chemical pesticides has become a priority in agriculture and the induction plant resistance by protein hydrolysates may offer sustainable alternative.The source, method degree hydrolysis, as well amino acid peptide composition affect efficacy protecting plants against pathogens.The aim this work was to clarify effect enzymatic hydrolysis on different sources (soybean, rapeseed guar meal), terms powdery mildew courgette (caused Podosphaera xanthii).The were...

Downy mildew caused by the oomycete Plasmopara viticola represents one of most devastating diseases in vineyards. Current ways to control this disease rely mainly on fungicide applications, but agro-ecological concerns have raised interest sustainable alternative methods. Certain rare sugars, like D-tagatose, shown efficacy reducing various plant diseases, including grapevine downy mildew. However, mechanism action D-tagatose against is not understood. The aim study was characterize and a...

Plant beneficial rhizobacteria may antagonize soilborne plant pathogens by producing a vast array of volatile organic compounds (VOCs). The production these depends on the medium composition used for bacterial cell growth. Accordingly, Lysobacter capsici AZ78 (AZ78) grown protein-rich was previously found to emit pyrazines with toxic activity against phypathogenic fungi and oomycetes. However, discrepancy between quantity in gaseous phase minimum needed achieve inhibition observed, lead us...

Wood pellets can sustain the growth of Trichoderma spp. in soil; however, little is known about their side effects on microbiota. The aims this study were to evaluate effect wood bulk soil and microbial population’s composition diversity. atroviride SC1 coated non-coated applied at level 10 g∙kg−1 final concentration 5 × 103 conidia∙g−1 compared a conidial suspension same without carrier. Untreated served as control. increased total population throughout experiment (estimated colony-forming...

Tagatose is a rare sugar that suppresses plant diseases, such as late blight of tomato, caused by Phytophthora infestans. can be metabolized some microorganisms and no information available on its persistence tomato leaves. The aim this study was to assess the tagatose leaves under commercial greenhouse conditions. amount inhibitory activity against P. infestans decreased seven days after spray application in absence rain wash-off. Potential tagatose-degrading bacteria were isolated from...

Background and Aims. Grapevine is susceptible to several diseases requires a large use of fungicides. Sustainable alternatives must be safe for humans the environment also should not interfere with fermentation. The aim this study was implement rare sugar, tagatose, against powdery mildew downy assess possible side effects on Saccharomyces cerevisiae Methods Results. Tagatose evaluated suppression under controlled field conditions its impact S. fermentation synthetic grape musts. applied at...