US 9,681,669 B2 · Plant extracts comprising at least a phenolic compound, for inducing the natural defense of a plant against a pathogen, such as Phytophthora infestans

Abstract

A sugar beet extract (SBE) induced defense in potato plants under green-house conditions and in field trial, without apparent toxicity for the plant. Treatment with SBE resulted in significant reduction of the size of Phytophthora infestans infection lesions and lower sporangia production. SBE had no apparent toxic effect, neither on the hyphal growth of the pathogennor on the germination of sporangia. SBE triggered PR-1 protein induction which suggests that the defense mechanism conferred by SBE could be via direct induced resistance. An array of phenolic metabolites and minerals was found in the SBE and constitutes potential inducers of the defense.

Claims27

Dependent claims

A plant extract comprising at least one phenolic compound, wherein the plant extract is obtained according to a process comprising the steps of:

mixing a solvent with a solid fraction of carbonated sugar beet root juice obtained by carbonating sugar beet root juice produced from sugar beet root, wherein said solvent is ethanol or a combination of water and ethanol which comprises an amount of ethanol sufficient to extract said at least one phenolic compound into a supernatant;
allowing said mixture of said solvent and said solid fraction of said carbonated sugar beet root juice to settle, forming a supernatant and settled solids;
and
separating said supernatant from said settled solids, wherein said supernatant comprises the plant extract.

1 more element

Dependencies are inferred from the claim text.

Facts

Application

14/426,837Filed 10 Sep 2013

Priority

SE 125101511 Sep 2012

Published

US 2015/0245620 A13 Sep 2015

Granted

20 Jun 2017

Term ends

Not estimatedThe source records don’t support an estimate.

Classification14 codes

A01N 65/08
Biocides, pest repellants or attractants, or plant growth regulators containing material from algae, lichens, bryophyta, multi-cellular fungi or…:…
A01N 37/40
Having at least one oxygen or sulfur atom attached to an aromatic ring system: having at least one carboxylic group or a thio analogue, or a…
A01N 43/16
Six-membered rings: with oxygen as the ring hetero atom
C05D 9/02
Other inorganic fertilisers: containing trace elements

Plant extracts comprising at least a phenolic compound, for inducing the natural defense of a plant against a pathogen, such as Phytophthora infestans

Life of this patent

Plant extracts comprising at least a phenolic compound, for inducing the natural defense of a plant against a pathogen, such as Phytophthora infestans

Life of this patent

Abstract

Claims27