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Actinovate
ACTINOVATE is a biofungicide containing the active ingredient Streptomyces lydicus WYEC 108. It was discovered in 1991 and isolated from soil in the UK. It competes with and parasitizes fungal pathogens through secretion of lytic enzymes and antimicrobial metabolites. Toxicology studies found it to be non-toxic and non-pathogenic to mammals. Field studies demonstrated efficacy against many soilborne and foliar fungal diseases comparable to chemical standards. When combined with fungicides, it provided improved disease control over chemicals alone. It is compatible with most pesticides and has minimal risk to non-target organisms.
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Actinovate
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- 3. HISTORY: Streptomyces lydicus WYEC 108 (ACTINOVATE®) Discovery: 1991 Isolation from rhizosphere from linseed plant roots (Crawford et al., 1993) Screening of new actinomycetes to control damping‐off (Phytium ultimum) Selection of WYEC 108: Stable prolific sporulator (15‐35 ºC / pH 4.0‐8.0) Patenting & Licensing 1992: IRF (University of Idaho): plant growth / yield enhancer 1995:US patent of WYEC 108 to control plant pathogens 1998: worldwide licensing to Natural Industries (US) Registration 2004: USA (EPA 73314‐1) 2007: Canada (PMRA PRD2007‐10) 2005‐2011: Turkey, Vietnam, Ecuador, Trinidad (in progress: Australia, Taiwan, Thailand, Costa Rica) 2010: EU (RMS: The Netherlands) 2011: Completeness Check Decision 2011/253/EU of 26 April 2011 PART I – BIOFUNGICIDE ACTINOVATE
- 4. ACTIVE INGREDIENT Taxonomy Streptomyces lydicus strain WYEC 108 Family: Noctuoidea; Orden: Actinomycetales; Class: Actinobacteria; Phylla: ActinobacteriaKingdom: Bacteria Origin Rhizosphere linseed plant (South Downs, UK) Distribution Widely distributed in most agricultural soils worldwide Deposited ATCC 55445 Target Root damping‐off and foliar fungal pathogens Growing Te Typical mesophylic specie (15‐35ºC; optimum 30ºC) Growing pH 4.0 – 8.0 PART I – BIOFUNGICIDE ACTINOVATE
- 5. MODE OF ACTION Competition For the space and nutrients. MycoparasitismThe bacteria breaks down the cell walls of pathogenic fungus mycelium by excreting lytic enzymes (chitinases, glucanases, peroxidases) Antibiosis Production and release of antimicrobial secondary metabolites PART I – BIOFUNGICIDE ACTINOVATE WYEC 108 Fusarium Fusarium
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- 7. TOXICOLOGY: Acute Mammalian Toxicity Guideline Study Toxicity Category Results 152‐30 OPPTS 870.1100 Acute Oral Toxicity IV5 male + 5 female rats (Sprague‐Dawley) No rats died. LD50 > 5.000 mg/kg 152‐32 OPPTS 885.3150 Acute Pulmonary Toxicity /Pathogen. N/A S. lydicus was not toxic, infective, or pathogenic (rats). Clearance: liver‐lymph nodes 7d, kidneys 14d, lungs 28d 152‐33 OPPTS 885.3200 Acute Injection Toxicity / Pathogenicity N/A S. lydicus was not toxic, infective, or pathogenic (rats). Clearance: blood‐kidney‐lymph nodes 14d, lungs 21d, liver‐spleen 28d 152‐34 OPPTS 870.2500 Acute Dermal Irritation Study IV 3 rabbits dosed (500 mg) Very slight erythema in 1 rabbitt with clearance by 24h 152‐35 OPPTS 870.2400 Acute Eye Irritation Study IV 3 rabbits dosed (0.1mL) Conjunctival irritation was reduced by 24 h OECD 471, 1997 Reverse Mutation Assay (Ames test) No mutagen Salmonella typhimurium No genotoxic in vitro; Irrelevant to mammals PART I – BIOFUNGICIDE ACTINOVATE
- 8. Active Ingredient Streptomyces lydicus strain WYEC 108 Concentration1x107 cfu/g (0.0371% TGAI) Physical State Solid powder (SP) Colour White pale pH (CIPAC MT 75) 6.65 (1% p/v) Stability (Tª) 1 year (35ºC) FORMULATION CHARACTERISTICS PART I – BIOFUNGICIDE ACTINOVATE 1,00E+00 1,00E+01 1,00E+02 1,00E+03 1,00E+04 1,00E+05 1,00E+06 1,00E+07 1,00E+08 1,00E+09 0 50 100 150 200 250 300 350 DAYS VIABILITY (CFU/mL) 4ºC RT
- 9. SOIL DISEASE FOLIAR DISEASE Fusarium Laveillula PythiumSpahaeroteca Rhizoctonia Erisiphe Phytophthora Oidium Sclerotinia Venturia Armillaria Botrytis Alternaria TARGET PATHOGENS Fusarium Fusarium + ACTINOVATE Rhizoctonia Rhizoctonia + ACTINOVATE Phytoph. Phytoph. + ACTINOVATE PART I – BIOFUNGICIDE ACTINOVATE Pythium Pythium + ACTINOVATE
- 10. Guideline Group TargetTest Remarks OPPTS 885.4380 Terrestrian Organisms Invertebrate: Honey bees Apis mellifera Dietary effect No risk NOEC > 17980 µg/mL (≈ x20 commercial dose) OPPTS 885.4050 Vertebrate: Nothern Bobwhite Colinus virginatus Avian Oral Pathog./ Toxicity Test No risk (1.25x108 cfu/kg body for 5d) OPPTS 885.4300 Non‐Target Plants ‐ Efficacy trials ‐ Databases ‐ Background levels Absence of adversed effects OPPTS 850.1300 y 885.4240 Acuatic Organisms Invertebrate: Daphnia magna Chronic Toxicity (21‐d static renewal test) NOEC (survival) = 3.1x103cfu/mL NOEC (reprod.) = 1.6x103cfu/mL OPPTS 850.1075 Vertebrate: Rainbow Trout Oncorhynchus myskiss Acute Toxicity Test (96‐h static test) No risk LC50 > 1x106 cfu/mL NOEC > 1x106 cfu/mL PART II – SUITABILITY FOR IPM EFFECT ON NON‐TARGET ORGANISMS ‐ Potential Ecological Risk Minimal
- 11. PART II – SUITABILITY FOR IPM DIRECTION FOR USE Crop SoilFoliar Vegetables 300 ‐ 500 g/Ha 250 ‐ 700 g / Ha Seed coating 200 – 500 g / 300 ‐ 1200 mL (per 50 g seeds) Turf 3 kg/Ha (initially) 1 kg/Ha (every 6‐8 wks) Cut flowers, bulbs and pot plants 100‐200 g/500 L 500 g/250 L (woody plants) 200‐300 g/50 kg bulbs 250 ‐ 700 g / Ha
- 12. Petunia and Geranium (Reddy, 2007, Alabama, US) PART II – SUITABILITY FOR IPM EFFICACY TRIAL: Phytium and Rhizoctonia Geranium ‐ Rhizoctonia ‐Root‐rot severity was reduced by ACTINOVATE ≈ same level than Chemical Standard ‐Vigor was increased by ACTINOVATE (PGPR) Petunia ‐ Pythium 0 0,5 1 1,5 2 2,5 3 3,5 4 4,5 5 Vigor Root‐rot Severity Scale 0‐5 Untreated Control Pathogen Control ACTINOVATE Chemical Standard 0 0,5 1 1,5 2 2,5 3 3,5 4 4,5 5 Vigor Root‐rot Severity Scale 0‐5 Untreated Cont Pathogen Cont ACTINOVATE Chemical Stand ‐ Preventive teatment 7 days before transplant and inoculation with pathogen ‐ Damping‐off was evaluated 45 days after transplanting.
- 13. Potato crop (Chapingo, México) EFFICACY TRIAL: Rhizoctonia solani PART II – SUITABILITY FOR IPM ‐Dose‐response effect high dose = best results 0 10 20 30 40 50 60 70 80 90 100 36 DAT 71 DAT 110 DAT Pathogen Control ACTINOVATE (1 kg/Ha) ACTINOVATE (1.5 kg/Ha) ACTINOVATE (2 kg/Ha) 67% 77% 82% 65% 76% 80% 61% 75% 79% Disease Incidence (%) 0 5 10 15 20 25 30 35 40 45 50 36 DAT 71 DAT 110 DAT Contr ACTIN ACTIN ACTIN 76% 81% 85% 72% 80% 82% 79% 70% 81% Disease Severity (%) ‐ ACTINOVATE preventively applied to potato seeds
- 14. Turf vr. Raleigh (Schlesselman & Bruno, 2006, Wharton, Texas, US) PART II – SUITABILITY FOR IPM EFFICACY TRIAL: Rhizoctonia solani 0 5 10 15 20 25 30 35 40 45 CONTROL Chemical 1ACTINOVATE Chemical 2 Chemical 3 ‐ ACTINOVATE efficacy was similar than efficacy showed by chemical standards Disease Incidence (%) ‐ Two spray applications
- 15. PART II – SUITABILITY FOR IPM EFFICACY TRIAL: Fusarium oxysporium fsp cyclaminis (FOC) *Published: Crop Protection 0 20 40 60 80 100 120 AUDPC Dry Weight%VD FOC T (1DAT) + ACT (7DAT) + FOC (14 DAT) F (1DAT) + ACT (7DAT) + FOC (14 DAT) ‐ Applying ACTINOVATE after a preventive fungicide showed promise supression of FOC Trial I AUDPC: Area Under the Disease Progressive Curve ; %VD: % Vascular Discoloration T: Thiophanate methyl; F: Fludioxonil; Cyclamen (*Elmer & McGovern, 2004, Gainesville, Florida US)
- 16. PART II – SUITABILITY FOR IPM EFFICACY TRIAL: Fusarium oxysporium fsp cyclaminis (FOC) *Published: Crop Protection Trial II ‐ACTINOVATE rotated with a chemical fungicide showed a better suppresion of FOC than the chemical alone AUDPC: Area Under the Disease Progressive Curve ; %VD:% Vascular Discoloration F: Fludioxonil; Az: Azoxystrobin Cyclamen (*Elmer & McGovern, 2004, Gainesville, Florida US) 0 20 40 60 80 100 120 AUDPC Dry Weight %VD FOC FOC (1 DAT) + AZ‐ACT (7DAT) + ACT (14 DAT) FOC (1 DAT) + AZ (7DAT) + AZ (14 DAT) FOC (1 DAT) + F ‐ ACT (7DAT) + ACT (14 DAT) FOC (1 DAT) + F (7DAT) + F (14 DAT) Trial II
- 17. COMPATIBILITY WITH PPPs PART II – SUITABILITY FOR IPM 0 10 20 30 40 50 60 70 80 90 100 Triadimenol 25% Copper oxychloride Miclobutanil 24% Ciproconazol Methyl Tiofanate Procimidone 50% Citrus extract 40% potassium phosphite Copper oxychloride Cymoxanile 60% COMPATIBILITY (%) 0 10 20 30 40 50 60 70 80 90 100 Bupirimate 2,5% Kasugamycin Dimethomorph 15% Wettable Sulphur Thiram 80% COMPATIBILITY (%) Fungicide FungicideFungicide‐BactericideFungicide‐Bactericide COMPATIBLE with ACTINOVATE NON‐COMPATIBLE with ACTINOVATE ‐Ten of them affected less than 80% the viability of ACTINOVATE spores.
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