Use of polymers and of small xyloglucan, and of compounds a, as phytosanitary products and biofertilizers

摘要

The invention concerns the use of a compound comprising a polysaccharide structure of formula X1-X2-X3-(X4)n wherein: X1, X2, X3 and X4, independently of one another, represent a monosaccharide selected among glucose, galactose, xylose, fucose, or arabinose, said monosaccharide being optionally in reduced form and/or substituted, in particular by an alkyl or acyl group, such as a methyl or acetyl group; and n represents 0 or 1, for adapting plants to abiotic stress, flowering control, fructification control, and for inducing defence reactions against pathogens.