Abstract
Abstract Background Municipal biowaste management may generate a negative impact on the environment; therefore, their biomasses could be valorised as an alternative feedstock to fossils to produce high performance compounds useful for agricultural applications. The main objective of this study was to evaluate the potential agricultural applications of bioproducts (BPs) obtained by alkaline hydrolysis of the solid anaerobic digestate of municipal biowastes (ADMBW) and of one oxidized (ozonized) product (ADMBW BP OX). Both products were chemically characterized and used for agricultural in vitro assays. Results BP preparations were tested for their potential effect as enhancers of seed germination process using five concentrations (1, 10, 100, 1000, and 5000 mg L −1 ) and three different species: cress ( Lepidium sativum ), tomato ( Solanum lycopersicum ), and lettuce ( Lactuca sativa L.). At this aim several germination indices were calculated to establish the priming effect of these substances on the selected seeds. Moreover, the potential in vitro antifungal effects of BPs at three concentrations (100, 1000, and 5000 mg L −1 ) on many dangerous fungal phytopathogens of economically important cultivated crops were evaluated and compared to Benzothiadiazole, one of the most-used plant disease suppressants. Results show that these ADMBW derived BPs exert a seed specie-specific positive effect on germination process, inducing better performances in the several calculated indices at all the concentration tested, except for the ADMBW BP OX 5000 mg L −1 , which showed at the highest concentration a strong phytotoxic effect on tomato seeds. Conclusions The fungicidal potency of ADMBW BP OX was for the first time clearly demonstrated on multiple targets as Botrytis cinerea , Sclerotinia sclerotiorum , Monilia sp., Sclerotium rolfsii , and Phytophthora nicotianae , by calculating their relative EC 50 and, when it was possible, also EC 95 and MIC values. These results are of great impact in the actual historical moment, as from a biowaste as DMBW, which is worldwide constantly produced, may be possible to obtain agrochemicals and fertilizers without the usual feedstocks, which are more and more expensive. Graphical Abstract
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Claims 9
Claim · model-written summary
Biowaste products improved cress seed germination indices at tested concentrations.
Not reportedComparator
Verbatim
e0“ADMBW derived BPs exert a seed specie-specific positive effect on germination process, inducing better performances in the several calculated indices at all the concentration tested”
e1“cress ( Lepidium sativum )”
Claim · model-written summary
Biowaste products improved tomato seed germination indices except at the highest oxidized-product dose.
- Taxon
- tomato
Solanum lycopersicume1 - Treatment
- ADMBW derived BPse0
- Outcome
- germination processe0
- Direction
- better performancese0
- Qualifier
- except for the ADMBW BP OX 5000 mg L −1e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ADMBW derived BPs exert a seed specie-specific positive effect on germination process, inducing better performances in the several calculated indices at all the concentration tested, except for the ADMBW BP OX 5000 mg L −1”
e1“tomato ( Solanum lycopersicum )”
Claim · model-written summary
Biowaste products improved lettuce seed germination indices at tested concentrations.
- Taxon
- lettuce
Lactuca sativae1 - Treatment
- ADMBW derived BPse0
- Outcome
- germination processe0
- Direction
- better performancese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ADMBW derived BPs exert a seed specie-specific positive effect on germination process, inducing better performances in the several calculated indices at all the concentration tested”
e1“lettuce ( Lactuca sativa L.)”
Claim · model-written summary
The highest oxidized biowaste-product dose was strongly phytotoxic to tomato seeds.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- ADMBW BP OX 5000 mg L −1e0
- Outcome
- phytotoxic effect on tomato seedse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ADMBW BP OX 5000 mg L −1 , which showed at the highest concentration a strong phytotoxic effect on tomato seeds”
Claim · model-written summary
Oxidized biowaste product showed fungicidal potency against Botrytis cinerea in vitro.
- Treatment
- ADMBW BP OXe0
- Interactor
- Botrytis cinerea
Botrytis cinereae0pathogen - Outcome
- fungicidal potencye0
Not reportedTaxon
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“fungicidal potency of ADMBW BP OX was for the first time clearly demonstrated on multiple targets as Botrytis cinerea , Sclerotinia sclerotiorum , Monilia sp., Sclerotium rolfsii , and Phytophthora nicotianae”
t0“seed germination”
Claim · model-written summary
Oxidized biowaste product showed fungicidal potency against Sclerotinia sclerotiorum in vitro.
- Treatment
- ADMBW BP OXe0
- Interactor
- Sclerotinia sclerotiorum
Sclerotinia sclerotiorume0pathogen - Outcome
- fungicidal potencye0
Not reportedTaxon
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“fungicidal potency of ADMBW BP OX was for the first time clearly demonstrated on multiple targets as Botrytis cinerea , Sclerotinia sclerotiorum , Monilia sp., Sclerotium rolfsii , and Phytophthora nicotianae”
Claim · model-written summary
Oxidized biowaste product showed fungicidal potency against Monilia sp. in vitro.
MoniliaNot reportedTaxon
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“fungicidal potency of ADMBW BP OX was for the first time clearly demonstrated on multiple targets as Botrytis cinerea , Sclerotinia sclerotiorum , Monilia sp., Sclerotium rolfsii , and Phytophthora nicotianae”
Claim · model-written summary
Oxidized biowaste product showed fungicidal potency against Sclerotium rolfsii in vitro.
- Treatment
- ADMBW BP OXe0
- Interactor
- Sclerotium rolfsii
Agroathelia rolfsiie0pathogen - Outcome
- fungicidal potencye0
Not reportedTaxon
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“fungicidal potency of ADMBW BP OX was for the first time clearly demonstrated on multiple targets as Botrytis cinerea , Sclerotinia sclerotiorum , Monilia sp., Sclerotium rolfsii , and Phytophthora nicotianae”
Claim · model-written summary
Oxidized biowaste product showed fungicidal potency against Phytophthora nicotianae in vitro.
- Treatment
- ADMBW BP OXe0
- Interactor
- Phytophthora nicotianae
Phytophthora nicotianaee0pathogen - Outcome
- fungicidal potencye0
Not reportedTaxon
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“fungicidal potency of ADMBW BP OX was for the first time clearly demonstrated on multiple targets as Botrytis cinerea , Sclerotinia sclerotiorum , Monilia sp., Sclerotium rolfsii , and Phytophthora nicotianae”
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