A method of detecting a species, strain or type of bacteria includes mixing a labeled bacteriophage including a label that is detectible via a detection system with a bacterial culture including the species, strain or type of bacteria to which the labeled bacteriophage selectively binds and using the detection system to detect the labeled bacteriophage bound to the species, strain or type of bacteria.

The present invention relates to a Siphoviridae bacteriophage Lac-BRP-1 that is isolated from the nature and can kill Lactobacillus brevis cells specifically, which has a genome represented by the nucleotide sequence of SEQ. ID. NO: 1 (Accession NO: KCTC 12659BP), and a method for preventing and treating the contaminations of Lactobacillus brevis by using the composition comprising the bacteriophage as an active ingredient.

Provided are compositions and methods for selectively reducing the amount of antibiotic resistant and/or virulent bacteria in a mixed bacteria population, or for reducing any other type of unwanted bacteria in a mixed bacteria population. The compositions and methods involve targeting bacteria that are differentiated from other members of the population by at least one unique clustered regularly interspaced short palindromic repeats (CRISPR) targeted DNA sequence. The compositions and methods can be readily adapted to target any bacteria or any bacteria plasmid, or both.

Provided is a novel bacteriophage ΦCJ21 (KCCM11363P). In addition, the present invention relates to an antibacterial composition including the bacteriophage ΦCJ21 (KCCM11363P) as an active ingredient. Further, provided is a method of preventing and/or treating infectious diseases by Clostridium perfringens in animals except for humans using the bacteriophage ΦCJ21 (KCCM11363P) or the antibacterial composition containing the bacteriophage ΦCJ21 (KCCM11363P) as an active ingredient.

Provided are compositions and methods for selectively reducing the amount of antibiotic resistant and/or virulent bacteria in a mixed bacteria population, or for reducing any other type of unwanted bacteria in a mixed bacteria population. The compositions and methods involve targeting bacteria that are differentiated from other members of the population by at least one unique clustered regularly interspaced short palindromic repeats (CRISPR) targeted DNA sequence. The compositions and methods can be readily adapted to target any bacteria or any bacteria plasmid, or both.

Provided is a novel bacteriophage ΦCJ22 (KCCM11364P). In addition, provided is an antibacterial composition containing the bacteriophage ΦCJ22 (KCCM11364P) as an active ingredient. Further, provided is a method of preventing and/or treating infectious diseases caused by Clostridium perfringens in animals except for humans by using the bacteriophage ΦCJ22 (KCCM11364P) or an antibacterial composition containing the bacteriophage ΦCJ22 (KCCM11364P) as an active ingredient.

The present invention relates to Siphoviridae bacteriophage Lac-GAP-3 (Accession Number KCTC 12816BP) having the ability to specifically kill Lactococcus garvieae bacteria and a genome represented by SEQ ID NO: 1 and isolated from nature, and a method for prevention and treatment of Lactococcus garvieae bacterial infection by using a composition containing the same bacteriophage as an effective ingredient.

Provided are compositions and methods for selectively reducing the amount of antibiotic resistant and/or virulent bacteria in a mixed bacteria population, or for reducing any other type of unwanted bacteria in a mixed bacteria population. The compositions and methods involve targeting bacteria that are differentiated from other members of the population by at least one unique clustered regularly interspaced short palindromic repeats (CRISPR) targeted DNA sequence. The compositions and methods can be readily adapted to target any bacteria or any bacteria plasmid, or both.

Methods and compositions are provided for preventing or reducing symptoms or disease associated with Xylella fastidiosa or Xanthomonas axonopodis in a plant. The invention provides novel bacteriophages virulent to Xylella fastidiosa or Xanthomonas axonopodis, including XfaMija and XfaMijo, and further provides methods for treating or preventing Pierce's Disease or Citrus Canker in plants.

Methods and compositions are provided for preventing or reducing symptoms or disease associated with Xylella fastidiosa or Xanthomonas axonopodis in a plant. The invention provides novel bacteriophages virulent to Xylella fastidiosa or Xanthomonas axonopodis, including XfaMija and XfaMijo, and further provides methods for treating or preventing Pierce's Disease or Citrus Canker in plants.