The present invention relates to a new isolated strain of the microorganism Microbacterium esteraromaticum which has nematicidal effect, the bacterial culture and the composition comprising it and their uses in the control of nematode infection in a plant. Also refers to a method to obtain the mutant strain of the invention.

The present invention has revealed that an antiviral agent containing a serine protease such as subtilisin, nattokinase, and trypsin has an effect of inactivating non-envelope type viruses, and that combining such an antiviral agent containing a serine protease with a cationic polymer enhances the inactivation effect of the antiviral agent against non-envelope type viruses. As a result, an antiviral agent that is highly safe, that has a high virus inactivation ability, and that contains a component that is inexpensive in terms the manufacturing cost and a cationic polymer, was discovered.

The present invention includes modified and unmodified microbes, compositions comprising these microbes, and methods of using these microbes and/or compositions for enhancing plant health, plant growth plant yield and/or drought tolerance. This disclosure also provides non-naturally occurring plant varieties that are artificially infected with microbes descried herein, as well as seed, reproductive tissue, vegetative tissue, regenerative tissues, plant parts, or progeny thereof.

Provided is a pesticidal Flavobacterium strain and bioactive compositions and metabolites derived therefrom as well as their methods of use for controlling pests.

Provided is a pesticidal Flavobacterium strain and bioactive compositions and metabolites derived therefrom as well as their methods of use for controlling pests.

MLX1034 is from Polaribacter sp. Q13, and has the amino acid sequence of the 1,3/1,4-xylanase MLX1034 is listed in SEQ ID NO.1; a nucleotide sequence of the gene is listed in SEQ ID NO.2; the 1,3/1,4-xylanase MLX1034 in the invention is capable of efficiently and specifically degrading 1,3/1,4-xylan and producing xylooligosaccharides with DP values above one; in addition, the physical and chemical properties of the 1,3/1,4-xylanase MLX1034 are stable enough to hydrolyze 1,3/1,4-xylan at room temperature; the 1,3/1,4-xylanase MLX1034 is suitable for the industrial production of red algal xylooligosaccharides at low energy costs.

This invention provides a novel protein deamidating enzyme. This protein deamidating enzyme includes a polypeptide containing an amino acid sequence shown in any of sequence numbers 1-11, or a subsequence thereof (the amino acid sequence of positions 338-515 in sequence number 1, positions 381-564 in sequence number 2, positions 122-309 in sequence number 4, positions 1-146 in sequence number 5, positions 19-235 in sequence number 6, positions 19-205 in sequence number 6, positions 10-303 in sequence number 7, positions 10-186 in sequence number 7, positions 162-426 in sequence number 9, or positions 162-341 in sequence number 9), a polypeptide which contains an amino acid sequence obtained by substituting, adding, inserting, or deleting one or multiple amino acids in the amino acid sequence in any of sequence numbers 1-11 or a subsequence thereof, and which has protein glutaminase activity, or a polypeptide which contains an amino acid sequence that has a 70% or higher sequence identity with an amino acid sequence shown in any of sequence number 1-11, or a subsequence thereof, and that has protein glutaminase activity.

The invention relates to a bacterial strain or a combination of bacterial strains, selected from the group consisting of: a Chryseobacterium massiliae strain, a Flavobacterium sp. strain with at least 95% or more Average Nucleotide Identity (ANI) value with the Flavobacterium sp. strain whose genome comprises SEQ ID NO: 1 or as identified by Accession Number No. I-5481 deposited at the Collection Nationale De Culture De Microorganismes (CNCM) on Jan. 24, 2020, and variants thereof, for use as a probiotic in fish(es). The bacterial strain(s) may has(ve) at least 95% or more Average Nucleotide Identity (ANI) value with the Chryseobacterium massiliae strain whose genome comprises SEQ ID NO:2 or as identified by Accession Number No. I-5479 deposited at the CNCM on Jan. 24, 2020, and/or the Flavobacterium sp. strain whose genome comprises SEQ ID NO: 1 or as identified by Accession Number No. I-5481 deposited at the CNCM on Jan. 24, 2020, respectively, or variants thereof. Probiotic use may be directed to preventing or minimizing infections by Flavobacterium columnare in fishes. The invention also concerns the said deposited bacterial strains, or probiotic compositions or food products or kits comprising the same, and a method to identify bacterial strain(s) that are probiotic against a pathogen infection.

A fermentation process for preparing a postbiotic with a by-product of wheat processing includes: preparation of a material; inoculation of Paenibacillus polymyxa (P. polymyxa)+Brachybacterium paraconglomeratum (B. paraconglomeratum)+Flavobacterium pectinovorum (F. pectinovorum) as fermentation strains; and isolation and extraction of the postbiotic. Since wheat starch wastewater and wheat bran include abundant nutrient components, the wheat starch wastewater and wheat bran can be used to prepare postbiotics, which is conducive to reducing a wastewater treatment cost of a related enterprise and protecting the environment, and can turn waste into treasure and increase an added value of an agricultural product. Preliminary experimental results show that, when no nutrients are additionally supplemented, marker products such as lipoteichoic acid (LTA) and short-chain fatty acids (SCFAs) in a prepared postbiotic solution are at high contents, which can extend an industrial chain of wheat deep-processing and improve an industrial value of deep processing technology.

The present invention includes modified and unmodified microbes, compositions comprising these microbes, and methods of using these microbes and/or compositions for enhancing plant health, plant growth plant yield and/or drought tolerance. This disclosure also provides non-naturally occurring plant varieties that are artificially infected with microbes descried herein, as well as seed, reproductive tissue, vegetative tissue, regenerative tissues, plant parts, or progeny thereof.