WO2022226608A1 - Ativação das funções bionematicida e promotora do crescimento vegetal em uma solução biotecnológica - Google Patents
Ativação das funções bionematicida e promotora do crescimento vegetal em uma solução biotecnológica Download PDFInfo
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Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N63/00—Biocides, pest repellants or attractants, or plant growth regulators containing microorganisms, viruses, microbial fungi, animals or substances produced by, or obtained from, microorganisms, viruses, microbial fungi or animals, e.g. enzymes or fermentates
- A01N63/20—Bacteria; Substances produced thereby or obtained therefrom
- A01N63/22—Bacillus
- A01N63/23—B. thuringiensis
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01P—BIOCIDAL, PEST REPELLANT, PEST ATTRACTANT OR PLANT GROWTH REGULATORY ACTIVITY OF CHEMICAL COMPOUNDS OR PREPARATIONS
- A01P5/00—Nematocides
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N65/00—Biocides, pest repellants or attractants, or plant growth regulators containing material from algae, lichens, bryophyta, multi-cellular fungi or plants, or extracts thereof
- A01N65/40—Liliopsida [monocotyledons]
- A01N65/42—Aloeaceae [Aloe family] or Liliaceae [Lily family], e.g. aloe, veratrum, onion, garlic or chives
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01P—BIOCIDAL, PEST REPELLANT, PEST ATTRACTANT OR PLANT GROWTH REGULATORY ACTIVITY OF CHEMICAL COMPOUNDS OR PREPARATIONS
- A01P21/00—Plant growth regulators
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F11/00—Other organic fertilisers
- C05F11/08—Organic fertilisers containing added bacterial cultures, mycelia or the like
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N1/00—Microorganisms, e.g. protozoa; Compositions thereof; Processes of propagating, maintaining or preserving microorganisms or compositions thereof; Processes of preparing or isolating a composition containing a microorganism; Culture media therefor
- C12N1/20—Bacteria; Culture media therefor
- C12N1/205—Bacterial isolates
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12R—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES C12C - C12Q, RELATING TO MICROORGANISMS
- C12R2001/00—Microorganisms ; Processes using microorganisms
- C12R2001/01—Bacteria or Actinomycetales ; using bacteria or Actinomycetales
- C12R2001/07—Bacillus
- C12R2001/075—Bacillus thuringiensis
Definitions
- the present invention is related to agricultural compositions comprising a combination of two or more species of bacteria of the genus Bacillus and a botanical extract comprising allicin as an active ingredient, presenting bionematicidal and plant growth promoting effect.
- the present invention contemplates the process of preparing the compositions and their agricultural application.
- Bacillus genus Bacillus are Gram-positive microorganisms, widespread in nature with the ability to produce large amounts of enzymes and a wide range of antibiotics, which make them excellent agricultural tools for plant growth promotion and biological management of pathogens. , including phytonematodes. In addition, they have the ability to form resistance structures under abiotic stress conditions called endospores, increasing their survival in unfavorable environments and, when industrially induced, guarantee the stability of the product for long periods of storage.
- Garlic extract has allicin as one of its active principles, a compound with broad antimicrobial activity even at low concentrations (mM), both against Gram-negative and Gram-positive bacteria, including the genus Bacillus (Leontiev et al., 2018). ). Therefore, it is common sense that the combination of the botanical extract of garlic with bacteria of the genus Bacillus results in incompatibility, composing a technical challenge to be solved. This incompatibility between garlic extract and Bacillus is recognized by the scientific community, and an example described is the inhibition of Bacillus cereus when in contact with 3%, 5% and 10% of this extract (Zahira et al., 1982).
- compositions comprising a combination of viable cells from two or more species of bacteria of the genus Bacillus and a botanical extract comprising allicin.
- the present invention surprisingly solves the problem of incompatibility of two or more species of bacteria of the genus Bacillus with each other as well as with a botanical extract comprising allicin by formulating compositions using essentially only endospores of the bacteria of the genus Bacillus.
- the use of endospores of bacteria of the genus Bacillus according to the present invention enables the preparation of a unique and stable formulation, with a long shelf life and maintenance of the activity of the individual actives, capable of promoting a surprising effect in the control of phytonematodes and in the promotion of plant growth.
- compositions of the present invention optionally further comprise a formulation that promotes the germination of endospores into metabolically active forms only when applied to the field, where the bacteria are able to play their respective biological roles without harming each other.
- the solution presents free amino acids, carbon sources and microbial metabolites, which accelerate the biological activation of endospores without depending on stochastic factors.
- the present invention provides agricultural compositions comprising endospores of two or more species of bacteria of the genus Bacillus and a botanical extract comprising allicin, method of preparation and uses thereof, as well as methods of controlling nematodes in plant cultures and promoting growth. vegetable.
- Figure 1 Bacillus velezensis Bacillus amyloliquefaciens compatibility assay in Petri dishes.
- FIG. 1 Stability between cells of three species of Bacillus in its two forms, vegetative and resistant (endospores), in the presence of the botanical extract of garlic after 24 and 48 hours of the formulation in mixture.
- Figure 4 Synergistic effect of Bacillus spp. and botanical extracts in promoting corn growth.
- the present invention provides an agricultural composition comprising endospores of two or more species of bacteria of the genus Bacillus and a botanical extract comprising allicin.
- the agricultural composition comprises endospores of three or more species of bacteria of the genus Bacillus.
- an agricultural composition according to the present invention further comprises components that promote germination of endospores into metabolically active forms only when applied in the field.
- an agricultural composition according to the present invention has a surprising and potentiated nematicide effect as well as a plant growth promoter. The observed nematicidal effect is greater than that presented by the separate components, bacterial cells and the botanical extract.
- Species of the genus Bacillus useful in the context of the present invention include, but are not limited to, B. velezensis, B. amyloliquefaciens, B. thuringiensis, B. megaterium, B. subtilis, B. firmus, Paenibacillus macerans, B. licheniformis.
- species of bacteria of the genus Bacillus are selected from the group consisting of B. velezensis (Adetomiwa and Olubukola, 2019; Rabbee et al., 2019), B.
- amyloliquefaciens (Idris et al., 2007; Liu et al., 2013; Xu et al., 2013) and B. thuringiensis (Bravo, Gill, and Soberón, 2007; Sansinenea, 2012; Sch ⁇ nemann, Knaak and Fi ⁇ za, 2014).
- B. thuringiensis Brainvo, Gill, and Soberón, 2007; Sansinenea, 2012; Sch ⁇ nemann, Knaak and Fi ⁇ za, 2014.
- different strains of said Bacillus species may be employed.
- Botanical extracts are rich in biologically active natural compounds, with enormous potential for biotechnological application.
- Botanical extracts comprising bionematicidal compounds such as allicin useful in the context of the present invention include, but are not limited to, garlic extract (Allium sativum), tea tree (Melaleuca alternifolia), neem (Azadirachta indica), clove (Syzygium) aromaticum).
- a botanical extract comprising allicin is extracted mainly from garlic bulbs (Allium sativum ) as it has a higher concentration of the active ingredient.
- These bioactive compounds derive from different extraction processes, from solvents with different polarities, generating mainly alcoholic extracts, aqueous extracts or hydrolates and essential oils.
- the main extractors of allicin are: water, when used immediately; or by means of ethanolic solvents, since they present greater efficiency in the extraction of the active ingredient. In both methods, the extracts are passed through a filtration process, and in some cases the extract may follow the allicin concentration step.
- a botanical extract comprising allicin according to the present invention can be obtained by the method as described in Zahira et al., 1982; Curtis et al., 2004 and Fujisawa et al., 2008 incorporated herein in their entirety by reference.
- Components that promote endospore germination into metabolically active forms only when applied to the field in the context of the present invention include, but are not limited to, carbon sources such as glucose, sucrose, maltose, cane molasses, nitrogen sources, including yeast extract , bacteriological peptone, free amino acids, including glutamic acid, tryptophan and glycine and, finally, metabolic extracts of microbial origin, including those rich in exopolysaccharides (EPS).
- carbon sources such as glucose, sucrose, maltose, cane molasses
- nitrogen sources including yeast extract , bacteriological peptone, free amino acids, including glutamic acid, tryptophan and glycine
- metabolic extracts of microbial origin including those rich in exopolysaccharides (EPS).
- EPS exopolysaccharides
- a composition of the present invention may optionally contain additives, or agriculturally acceptable carriers, such as seed treatment and seed furrow additives, cell protectors for spray tanks, soil conditioners, fall aids, seed coating polymers, polymers for coatings of chemical or organic fertilizer granules, solid fertilizers, liquid fertilizers used in formulations for foliar products, endospore activators, among other purposes.
- additives such as seed treatment and seed furrow additives, cell protectors for spray tanks, soil conditioners, fall aids, seed coating polymers, polymers for coatings of chemical or organic fertilizer granules, solid fertilizers, liquid fertilizers used in formulations for foliar products, endospore activators, among other purposes.
- a composition according to the present invention may be packaged in a suitable package known in the art.
- a plastic bag and/or vials can be used without the need for oxygen exchange of the final product.
- the packaging of the product presented by the present invention eliminates the need for light protection, as it presents photostability.
- the packaged volume can contain approximately 1 - 20 L and can be stored in refrigerated environments, or at room temperature, comprising the range of approximately 10 - 35°C.
- the present invention further provides a process for producing an agricultural composition comprising the steps of: (a) fermenting microbial cultures of two or more species of the genus Bacillus;
- the present invention also provides additional parameters for fermentation of Bacillus cells, and cell sporulation, such as parameters of pressure, temperature, oxygenation (air volume and agitation) and culture media, making it possible to obtain Bacillus endospores used in the preparation of an agricultural composition according to the present invention.
- the fermentation of the culture of the different Bacillus in batches takes place for approximately 24 - 168 hours.
- the method of the present invention comprises sequentially expanding (scaling) the culture of Bacillus spp. for inoculation of the fermentation culture.
- the sequential expansion is started in volumes of 100 ml_, which serve as an inoculum for about 1 L. These, in turn, are inoculated in about 10 L, which are then inoculated in 180 L tanks and which, finally, they are transferred to reactors containing about 2000 L.
- the Bacillus species is expanded into about 100 ml vials by incubation on an orbital shaker at about 80 rpm to about 200 rpm.
- the incubation time is preferably from about 8 hours to about 24 hours.
- the Bacillus species are then cultured in stainless steel flasks containing about 1 L of culture medium.
- the culture temperature for multiplication of the three species of Bacillus in accordance with the present invention is from about 22°C to about 38°C.
- different Bacillus species are inoculated separately in the scaling process up to 180L and mixed in the 2000L fermenters as described for the present invention.
- said flasks are inoculated into two other stainless steel flasks of about 10 L and then transferred into tanks containing about 180 L of culture specific for each microorganism, with the addition of a stainless steel flask containing about 5 L of the solution of endospore-forming salts for Bacillus spp. (Table 4), incubated for about 24 to about 168 hours.
- the step of mixing the different Bacillus species and botanical extract comprising allicin in a concentration of about 1% to about 30% is conducted at a temperature of about 22°C to about 38°C.
- the pressure is preferably from about 0.5 to about 1.2 kgf/cm 3 .
- Agitation is preferably from about 40 Hz to about 45 Hz.
- the culture medium used for scaling up the culture of the three Bacillus and/or fermentation for the 100 ml_, 1L and 10 L scales is described in Table 1.
- Endospore formation by Bacillus cells is induced by the imposition of an osmotic stress modality during or after the fermentative process of cell multiplication.
- Osmotic stress is simulated by adding a concentrated salt solution, composed of 50 to 400 g/L of Ca(N03) 2 , 1.0 to 10 g/L of MnCh and 0.1 to 0.8 g/L L of FeS0 4 , which, in combination, trigger a series of physiological responses in cells, resulting in the induction of endospore formation.
- the formation of endospores occurs in the stationary phase of bacterial growth, when microorganisms understand stress as an unfavorable condition for survival.
- Endospores are known resistance structures for Gram positive bacterial cells.
- osmotic stress is induced by incubating the cells in medium containing a saline concentration of 1 g/L to about 15 g/L.
- the salts are Ca(NO3) 2 , MnCh and FeSO 4 .
- a solution as described in Table 4 is added to the culture and/or fermentation broth in a ratio of about 1 spore-formed saline to about 36 Bacillus culture broth.
- the cells are incubated with the saline for about 24 to about 168 hours.
- the present invention provides a product comprising a composition according to the present invention as a growth promoter for plants, especially grasses.
- the present invention further provides use of the compositions according to the present invention for controlling nematodes and/or for promoting plant growth in agricultural crops.
- the present invention further provides methods of controlling nematodes and/or promoting plant growth in agricultural crops comprising applying a composition according to the present invention to agricultural crops. in a modality preferably, the methods of the present invention are applied to grass crops, preferably maize.
- an agricultural composition according to the present invention is applied to seeds and/or the planting furrow.
- the following examples are intended to illustrate, but not limit, the invention.
- Bacillus species are inoculated separately in flasks containing 100 mL of culture medium as described in Table 1 for B. amyloliquefacies and B. velezensis and Table 3 for B. thurigiensis, being incubated in an orbital shaker at 80-200 rpm, at 22- 38 ° C for approximately 8-48 hours.
- Table 2 Culture medium used for the growth of Bacillus spp. for 200 L tanks.
- Table 3 Culture medium used for the growth of B. thuringiensis in 200 L tanks.
- the sterilization process using 1400 L of water with defoamer is carried out for approximately 60 to 120 minutes, at a temperature of approximately 121 °C to approximately 130 °C .
- sterilization is carried out at a pressure of approximately 1.0 - 2.0 kgf/cm 2 .
- the pressure is preferably from about 1.0 to about 1.2 kgf/cm 3 .
- Agitation is preferably from about 40 Hz to about 45 Hz.
- the three species of Bacillus containing about 1 to about 30% allicin-based botanical extract is then inoculated and mixed with the fermenter, preferably about 30 to about 120 minutes.
- the final product is packaged in gallons or bags, packages in which the product is stored and marketed.
- Example 3 The induction and stabilization of endospores allows (i) the combination of different species of Bacillus ( Figure 1) and (ii) their association with botanical extracts ( Figure 2).
- Figure 1 When the cells of the three species of Bacillus, B. amyloliquefaciens, B. velezensis and B. thuringiensis, in their vegetative forms, were added to the botanical extract of garlic, there was a strong drop in cell viability, in just 24 hours, and even more accentuated after 48 hours.
- the cells of the species in their respective resistance forms were submitted to the same conditions, addition of the botanical extract and storage time, great stability of the composition was obtained, without significant differences in the concentration and viability of the cells.
- the stability and compatibility obtained in the assay using sporulated cells mixed with allicin makes the technology possible for industrial production and agronomic application.
- Example 4 The combination of three Bacillus species and botanical extract potentiates the nematicide effect on agriculturally relevant targets
- J2 juveniles of Meloidogyne javanica nematodes commonly called “knot nematodes” was evaluated.
- knot nematodes or root-knot nematode in English, being considered one of the most economically important phytonemtaoid groups in the country.
- J2 stage juveniles are the infective form of nematodes, that is, they are the mobile and active form of the nematode that penetrate the root cell elongation zone and initiate the process of parasitism.
- Bacillus spp. are recognized for their nematicidal potential thanks to their ability to synthesize a wide range of antibiotics, polypeptides, hydrolytic enzymes and endotoxins that interfere with the reproductive cycle of nematodes, and act on adult and juvenile forms (Machado et al., 2012).
- Garlic extract in turn, has biologically active ingredients, among which allicin and polysulfites stand out, which have double action against insects and nematodes, and have been used as component of new generation nematicity products (Umetsu and Shirai, 2020).
- the invention acted on the mobile forms of the nematode (J2), which have a greater power of root infection, highlighting the enormous potential of this technology for the management of this great challenge in today's agriculture.
- Example 5 In addition to enhancing the nematicide effect, the combination of three species of Bacillus and botanical extract acts synergistically to promote plant growth.
- the present invention which consists of the combination of three species of Bacillus and garlic extract, provided plant growth promotion, as can be seen in figures 4 and 5.
- the nematicide effect it was verified synergistic action of the components of the present innovation, so that its effect is greater than the sum of the effects of each of the agents applied separately.
- ADELEKE M. T. V. Effect of Allium sativum (garlic) extract on the growth and nodulation of cowpea (Vigna unguiculata) and groundnut (Arachis hypogea). African Journal of Agricultural Research, v. 43, n.11 4304-4312, 2016.
- ADETOMIWA A.A., DU, T.L. E OLUBUKOLA, O.B.. Bacillus velezensis: phylogeny, useful applications, and avenues for exploitation. Applied Microbiology and Biotechnology, 103, 2019, 3669-3682.
- BRAVO A.
- GILL SS
- SOBER ⁇ N M. Mode of action of Bacillus thuringiensis Cry and Cyt toxins and their potential for insect control.
- Toxicon v. 49, no. 4, p. 423-435, 2007.
- IDRIS E. et al. Tryptophan-dependent production of indole-3-acetic acid (IAA) affects level of plant growth promotion by Bacillus amyloliquefaciens FZB42. Molecular plant-microbe interactions : MPMI, v. 20, no. 6, p. 619-626, 2007.
- RABBEE M.F. et al., Bacillus velezensis. A Valuable Member of Bioactive Molecules within Plant Microbiomes. Molecules, 24, 2019, 1046. doi: 10.3390/molecules24061046
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US18/554,607 US20240180165A1 (en) | 2021-04-30 | 2021-04-30 | Activation of bionematicide and plant growth promoting functions in a biotechnological solution comprising two or more bacillus species and allicin; industrial process and application thereof |
PCT/BR2021/050180 WO2022226608A1 (pt) | 2021-04-30 | 2021-04-30 | Ativação das funções bionematicida e promotora do crescimento vegetal em uma solução biotecnológica |
BR112023018245A BR112023018245A2 (pt) | 2021-04-30 | 2021-04-30 | Composição agrícola de espécies bacterianas do gênero bacillus e alicina, processo de fabricação e usos da mesma, bem como métodos para controlar nematoides em culturas agrícolas e promover o crescimento de plantas em culturas agrícolas |
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CN103478509A (zh) * | 2013-10-24 | 2014-01-01 | 南京农业大学 | 一种解淀粉芽孢杆菌抗菌脂肽的生产方法及其在对虾饲料中的应用 |
US20160362654A1 (en) * | 2013-02-06 | 2016-12-15 | Envera, Llc | Dried spore germinative compound mixtures |
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- 2021-04-30 WO PCT/BR2021/050180 patent/WO2022226608A1/pt active Application Filing
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PL167237B1 (pl) * | 1991-04-09 | 1995-08-31 | Univ M Curie Sklodowskiej | Biopreparat do ochrony roślin |
US20160362654A1 (en) * | 2013-02-06 | 2016-12-15 | Envera, Llc | Dried spore germinative compound mixtures |
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