Nanoparticulate formulation for preventing or treating callose formation in plants
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Solution Overview
Problem
Current treatments for callose formation in plants, particularly those caused by phloem-restricted pathogens, are ineffective, leading to nutrient obstruction and compromised plant health, with no available formulations to prevent or treat callose formation or suppress the hypersensitive response (HR) effectively.
Innovation Solution
A nanoparticulate formulation comprising a core with antioxidants, imaging agents, and active agents encapsulated in a shell stabilized by amphiphilic molecules or block copolymers, administered via foliar, root, or seed delivery, to modulate the plant's immune response and prevent or suppress callose formation and HR.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If antibiotics are injected into the tree trunk to treat pathogen infection, then the pathogen load in the plant's vascular system is reduced, but the method is not effective for disease prevention or mitigation and is only used as a last-resort effort
Solution Approach 1:
The nanoparticulate formulation is applied to plants before pathogen infection occurs, enabling preventive action against callose formation. The formulation proactively modulates the plant's immune response and prevents HR activation, rather than treating established infections with antibiotics as a last resort
2Object-affected harmful factors
If the HR response is activated to block pathogen movement through the vascular system, then the spread of pathogens is restricted, but callose deposits form obstructions within the phloem, inhibiting the normal flow of nutrients
Solution Approach 1:
The formulation converts the harmful HR response into a beneficial effect by modulating the plant's immune response. Instead of allowing uncontrolled HR activation that causes callose obstruction, the formulation suppresses excessive HR while maintaining pathogen defense, transforming a harmful defense mechanism into a controlled protective response
Solution Approach 2:
The nanoparticulate formulation changes the parameter of immune response intensity by modulating HR activation. It adjusts the threshold and magnitude of the plant's defense response, preventing excessive callose formation while maintaining adequate pathogen resistance through controlled modulation of the immune signaling pathways
3Strength
If callose deposits are formed to seal off damaged areas and reinforce cell walls, then the structural integrity of plant tissues is strengthened, but the vasculature is partially blocked, leading to nutrient deficiencies
Solution Approach 1:
The formulation applies local quality control to callose deposition by suppressing callose formation specifically in the phloem vasculature where it causes obstruction, while allowing callose to form in cell walls where it provides structural reinforcement. This spatially selective modulation prevents nutrient blockage while maintaining tissue integrity
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The formulation effectively inhibits callose deposition and suppresses the HR, improving nutrient flow and overall plant health by preventing callose formation and reducing oxidative stress, thereby enhancing plant vigor and productivity.
Implementation Method 1
a nanoparticulate formulation comprising: (i) a core comprising at least one antioxidant alone or in further combination with (a) at least one imaging agent, (b) at least one active agent, or (c) a combination of (a) and (b); and (ii) a shell comprising a stabilizer
Implementation Method 2
The HR involves the activation of several defense mechanisms, including the generation of reactive oxygen species (ROS) as part of the oxidative burst. When the oxidative burst is prevented, interrupted, or suppressed, it leads to a reduction in the intensity of the HR.
Data Source
AI summary
A nanoparticulate formulation, which formulation comprises (i) a core comprising at least one antioxidant alone or further in combination with (a) at least one imaging agent, (b) at least one active agent, or (c) a combination of (a) and (b); and (ii) a shell comprising a stabilizer selected from an amphiphilic molecule, at least one block copolymer, and any combinations thereof; and methods of use for preventing or treating a callose formation and preventing or suppressing a hypersensitive response in plants.