Abstract: Organic oligomers of acylglycerol having general formula (I): Formula (I), in which M1 and Q1 are organic groups; G11 is a hydroxylpropyl group; G12 and G13 are ?/??-acylglycerols; n is a natural integer from the range [0; 8]; m is a natural integer from the range [0; 4]; and p is a natural integer from the range [0; 3].

Abstract: A method for processing plant matter, which involves applying a processing composition including at least one biological agent selected from: bacteria including a DNA sequence, referred to as 16S rDNA, coding for the 16S ribosomal RNA of the bacterium, which is 100% homologous with SEQ ID NO. 1, culture media in which bacteria have grown which include the 16S rDNA sequence that is 100% homologous with SEQ ID NO. 1 and which are substantially free of the bacteria, the culture media including polynucleotides having a DNA sequence which is 100% homologous with SEQ ID NO. 1, and in which the bacteria are selected from bacteria that are consistent with the strain filed and registered on 7 Apr. 2011 with number 1-4467 before the French National Collection of Microorganism Cultures (CNCM) of the Pasteur Institute, and mutant bacteria of the filed strain.

Abstract: A process for treating plants, including the application of at least one compound, termed carbonic ester of glycerol, including at least one carboxylic ester function formed by a carbonic acid-derived group and at least one glycerol-derived group, with the exception of cyclic glyceryl carbonate including five ring members.

Abstract: Organic oligomers of acylglycerol having general formula (I): Formula (I), in which M1 and Q1 are organic groups; G11 is a hydroxylpropyl group; G12 and G13 are ?/??-acylglycerols; n is a natural integer from the range [0; 8]; m is a natural integer from the range [0; 4]; and p is a natural integer from the range [0; 3].

Abstract: A method of stimulating the natural defense system of a plant utilizing an isolated strain of Streptomyces beta-vulgaris is described. The method includes administering to the plant an effective amount of the Streptomyces beta-vulgaris strain, or an active compound obtained from culturing the strain, which stimulates the expression of the plant defense genes such as PR1 and PDF1.2a.

Abstract: A new Streptomyces beta-vulgaris strain that is deposited at the CNCM under number I-3639, and the use of this strain or a mutant strain for obtaining a composition (culture filtrate) and active compounds (secondary metabolites) by fermentation. Also, the use of the new strain, a mutant strain, the culture filtrate, or active compounds for the protection of plants and the biological struggle against phytopathogenic agents and/or for stimulating the growth of plants.