Potentiating agents for protecting plants from fungal infections

Patent metadata

Field	Value
Publication number	US-10405550-B2
Application number	US-201314414788-A
Country	US
Kind code	B2
Filing date	Jun 27, 2013
Priority date	Jul 16, 2012
Publication date	Sep 10, 2019
Grant date	Sep 10, 2019

Abstract

A method for preventing, controlling or treating a fungal infection on a plant organ includes applying to the plant organ a non-fungicidal amount or a potentiating amount of a composition including a potentiating agent of a plant defense molecule, in association with a phytopharmaceutical vehicle.

First claim

The invention claimed is:

1. A method for controlling or treating a fungal infection by Alternaria brassicicola on a plant, a part of a plant, or a plant propagation material comprising applying to said plant, part of a plant or plant propagation material a plant defense molecule selected from the group consisting of brassinin, camalexin, resveratrol, 3,5-dihydroxybiphenyl, aucuparin and 6-methoxymellein; and a non-fungicidal amount or a potentiating amount of a potentiating agent selected from the group consisting of chelerythrine, sanguinarine, and Cl − , HSO 4 − , I − , HCO 3 − salts thereof;
wherein said non-fungicidal amount or potentiating amount ranges from 1 to 25 μm.

2. The method according to claim 1 , wherein the plant, the part of a plant, or the plant propagation material is selected from the group consisting of Brassicacae family; Apiaceae family; Vitaceae family; and Rosaceae family.

3. The method according to claim 1 , wherein
said plant organ is Brassica oleracea ,
and
said potentiating agent of a plant defense molecule is chelerythrine.

4. The method according to claim 1 , wherein said potentiating agent of a plant defense molecule is sanguinarine.

5. The method according to claim 1 , wherein said potentiating agent of a plant defense molecule is chelerythrine.

6. The method according to claim 1 , wherein the composition further comprises an agent for stimulating the synthesis of a plant defense molecule, an insecticide and/or a herbicide.

7. The method according to claim 1 , wherein:
said plant defense molecule is camalexin; and
said potentiating agent of a plant defense molecule is chelerythrine.

8. A composition comprising a plant defense molecule selected from the group consisting of brassinin, camalexin, resveratrol, 3,5-dihydroxybiphenyl, aucuparin and 6-methoxymellein and a potentiating agent of a plant defense molecule, wherein said potentiating agent is selected from the group consisting of chelerythrine, sanguinarine and Cl − , HSO 4 − , I − , HCO 3 − salts thereof;
and
wherein said composition comprises a non-fungicidal amount or potentiating amount of the potentiating agent that ranges from 1 to 25 μM.

9. The composition according to claim 8 , which is a phytosanitary or phytopharmaceutical composition and further comprising a phytopharmaceutical vehicle.

10. The composition according to claim 8 , which is a coating, dressing, or pelleting composition.

11. The composition according to claim 8 , wherein
said plant defense molecule is camalexin; and
said potentiating agent of a plant defense molecule is chelerythrine.

12. A seed coated, dressed or pelleted with the composition according to claim 8 .

Assignees

• Univ Angers

Inventors

• Simoneau Philippe
• Guillemette Thomas
• Richomme Pascal
• Helesbeux Jean-Jacques

Classifications

• A01N43/90 Primary

  having two or more relevant hetero rings, condensed among themselves or with a common carbocyclic ring system · CPC title

• A01N43/16

  with oxygen as the ring hetero atom · CPC title

• A01N25/00

  Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application {, e.g. seed treatment or sequential application}; Substances for reducing the noxious effect of the active ingredients to organisms other than pests · CPC title

• A01N43/42

  condensed with carbocyclic rings · CPC title

• A01N31/06

  Oxygen or sulfur directly attached to a cycloaliphatic ring system · CPC title