A phytoregulator composition including L-proline, kaolin, and optionally brown algae in wettable powder form for use in plants in flowering and fruiting stages of life is provided.

Provided is a component having plant defense activity. A PR1 gene expression activator containing a culture of a unicellular alga containing a green photosynthetic pigment as an active ingredient; A plant defense activator containing a culture of a unicellular alga containing a green photosynthetic pigment as an active ingredient; A plant disease preventive or ameliorating agent containing a culture of a unicellular alga containing a green photosynthetic pigment as an active ingredient; and a method of producing a plant defense activating component containing: cultivating a unicellular alga containing a green photosynthetic pigment under an aerobic condition to produce a culture containing an extracellular polysaccharide.

Provided is a component having plant defense activity. A PR1 gene expression activator containing a culture of a unicellular alga containing a green photosynthetic pigment as an active ingredient; A plant defense activator containing a culture of a unicellular alga containing a green photosynthetic pigment as an active ingredient; A plant disease preventive or ameliorating agent containing a culture of a unicellular alga containing a green photosynthetic pigment as an active ingredient; and a method of producing a plant defense activating component containing: cultivating a unicellular alga containing a green photosynthetic pigment under an aerobic condition to produce a culture containing an extracellular polysaccharide.

Provided is a component having plant defense activity. A PR1 gene expression activator containing a culture of a unicellular alga containing a green photosynthetic pigment as an active ingredient; A plant defense activator containing a culture of a unicellular alga containing a green photosynthetic pigment as an active ingredient; A plant disease preventive or ameliorating agent containing a culture of a unicellular alga containing a green photosynthetic pigment as an active ingredient; and a method of producing a plant defense activating component containing: cultivating a unicellular alga containing a green photosynthetic pigment under an aerobic condition to produce a culture containing an extracellular polysaccharide.

The present invention concerns a process for preparing a composite of porous material/compound/hybrid organic-inorganic material having a 2:1 lamellar structure, said hybrid material having the following general formula I:
Na.sub.x[(Mg.sub.3)(Al.sub.x(RSi).sub.4−x)O.sub.8+x(OH).sub.2]  (I)
wherein
x is a number such that 0≤x<1.2 and
R represents a C.sub.1-C.sub.30 alkyl group, an aryl group, a (C.sub.1-C.sub.30 alkyl)aryl group or an O—(C.sub.1-C.sub.30 alkyl) group, it being possible for the alkyl group to be substituted with a group chosen from a phenyl, vinyl, aminopropyl or mercaptopropyl group,
and said compound being chosen from the group constituted of at least one active substance and at least one microorganism and mixtures thereof the process comprising:
a) the step of sol-gel synthesis of the hybrid organic-inorganic material having a 2:1 lamellar structure in the presence of the compound and of the porous material saturated with the compound;
b) the recovery of the composite. It also concerns a composite obtainable by means of this process, a composition comprising it and its use in particular for the fertilization of plants.

The present invention concerns a process for preparing a composite of porous material/compound/hybrid organic-inorganic material having a 2:1 lamellar structure, said hybrid material having the following general formula I:
Na.sub.x[(Mg.sub.3)(Al.sub.x(RSi).sub.4−x)O.sub.8+x(OH).sub.2]  (I)
wherein
x is a number such that 0≤x<1.2 and
R represents a C.sub.1-C.sub.30 alkyl group, an aryl group, a (C.sub.1-C.sub.30 alkyl)aryl group or an O—(C.sub.1-C.sub.30 alkyl) group, it being possible for the alkyl group to be substituted with a group chosen from a phenyl, vinyl, aminopropyl or mercaptopropyl group,
and said compound being chosen from the group constituted of at least one active substance and at least one microorganism and mixtures thereof the process comprising:
a) the step of sol-gel synthesis of the hybrid organic-inorganic material having a 2:1 lamellar structure in the presence of the compound and of the porous material saturated with the compound;
b) the recovery of the composite. It also concerns a composite obtainable by means of this process, a composition comprising it and its use in particular for the fertilization of plants.

The present invention concerns a process for preparing a composite of porous material/compound/hybrid organic-inorganic material having a 2:1 lamellar structure, said hybrid material having the following general formula I:
Na.sub.x[(Mg.sub.3)(Al.sub.x(RSi).sub.4−x)O.sub.8+x(OH).sub.2]  (I)
wherein
x is a number such that 0≤x<1.2 and
R represents a C.sub.1-C.sub.30 alkyl group, an aryl group, a (C.sub.1-C.sub.30 alkyl)aryl group or an O—(C.sub.1-C.sub.30 alkyl) group, it being possible for the alkyl group to be substituted with a group chosen from a phenyl, vinyl, aminopropyl or mercaptopropyl group,
and said compound being chosen from the group constituted of at least one active substance and at least one microorganism and mixtures thereof the process comprising:
a) the step of sol-gel synthesis of the hybrid organic-inorganic material having a 2:1 lamellar structure in the presence of the compound and of the porous material saturated with the compound;
b) the recovery of the composite. It also concerns a composite obtainable by means of this process, a composition comprising it and its use in particular for the fertilization of plants.

The invention relates to a phytosanitary composition comprising (i) ulvans and/or ulvan-derived oligosaccharides, for example in the form of an extract containing ulvans and/or ulvan-derived oligosaccharides; and (ii) silicon, to the use of said composition for activating plant defense reactions and resistance against biotic stresses, and also to a method for activating plant defense reactions and resistance against biotic stresses, which involves applying to said plant an effective amount of the phytosanitary composition.

The invention relates to a phytosanitary composition comprising (i) ulvans and/or ulvan-derived oligosaccharides, for example in the form of an extract containing ulvans and/or ulvan-derived oligosaccharides; and (ii) silicon, to the use of said composition for activating plant defense reactions and resistance against biotic stresses, and also to a method for activating plant defense reactions and resistance against biotic stresses, which involves applying to said plant an effective amount of the phytosanitary composition.

The invention relates to a phytosanitary composition comprising (i) ulvans and/or ulvan-derived oligosaccharides, for example in the form of an extract containing ulvans and/or ulvan-derived oligosaccharides; and (ii) silicon, to the use of said composition for activating plant defense reactions and resistance against biotic stresses, and also to a method for activating plant defense reactions and resistance against biotic stresses, which involves applying to said plant an effective amount of the phytosanitary composition.