Algae Polysaccharide Elicitor Activates Plant Immunity
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Solution Overview
Problem
Current agricultural practices face challenges in controlling plant diseases due to resistance development in pathogens against chemical pesticides, leading to reduced efficacy and increased environmental impact, necessitating a non-toxic approach to enhance plant defense mechanisms.
Innovation Solution
A composition derived from blue-green algae, specifically Spirulina, combined with polycationic molecules like chitosan saccharides, is used to induce plant metabolic changes, enhancing resistance and protein content, and applied in various fields including agriculture, pharmaceuticals, and cosmetics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If chemical fertilizers and pesticides are used to control plant diseases and maintain high yield, then plant disease control and productivity are improved, but environmental harm and biodiversity loss increase
Solution Approach 1:
The patent transitions from chemical-based plant protection to bio-based alternatives by changing the chemical composition parameters. Specifically, it uses polysaccharides extracted from blue-green algae (containing rhamnose, uronic acids, and sulfate groups) as active ingredients, fundamentally altering the chemical nature of plant protection products from synthetic chemicals to natural biomolecules, thereby reducing environmental harm while maintaining crop productivity
Solution Approach 2:
The patent employs naturally derived, biodegradable polysaccharides from blue-green algae as temporary, environmentally friendly alternatives to persistent chemical pesticides. These natural compounds provide short-term disease control functionality while decomposing harmlessly in the environment, contrasting with long-lasting synthetic pesticides that accumulate and cause ecological damage
2Reliability
If chemical pesticides are used to control plant diseases, then disease control efficacy is improved, but pathogen resistance development increases
Solution Approach 1:
The patent converts the plant's own metabolic responses to stress into a beneficial defense mechanism. By applying polysaccharide elicitors that trigger plant defense pathways (such as salicylic acid and jasmonic acid signaling), the plant's natural immune response is activated, producing resistance to pathogens without the harmful side effects of chemical pesticides and without selecting for resistant pathogen strains
Solution Approach 2:
The patent enables plants to defend themselves by activating their intrinsic immune systems through bio-elicitors. The polysaccharides from blue-green algae serve as signals that stimulate the plant's own defense mechanisms, including the production of pathogenesis-related proteins and reinforcement of cell walls, allowing the plant to autonomously resist diseases without external chemical intervention
3Reliability
If toxic compounds are applied to plants for disease control, then plant protection is improved, but plant metabolic health deteriorates
Solution Approach 1:
The patent introduces polysaccharides from blue-green algae as intermediary molecules that mediate between the external environment and the plant's defense systems. These polysaccharides act as safe elicitors that trigger protective metabolic pathways without directly contacting and damaging plant tissues with toxic chemicals, serving as a benign bridge that activates immunity while preserving plant health
Data Source
AI summary
The present invention relatesto a composition comprising saccharides extracted from blue-green algae biomass, the said saccharides comprising -from 55% to 60% of rhamnose by weight, -from 6.5 % to 10% of uronic acid by weight, -from 5% to 15 % of sulfate groups by weight, and -less than 10% of xylose, glucose and galactose or a mixture thereof calculated by weight upon the total of the composition being 100%.