Endophyte Strain Selection via Genetic and Metabolic Analysis
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Solution Overview
Problem
Current methods for breeding and selecting endophytes, particularly Neotyphodium endophytes, face challenges such as low inoculation frequencies, instability in elite germplasm, and limited availability of endophyte strains with desirable properties, which hinders their utility in agriculture for producing bioactive molecules and improving plant traits.
Innovation Solution
A method involving genetic and metabolic analysis of endophytes to select and characterize strains with desired profiles, including geographic origin, using SSR markers and metabolic profiling, and generating novel strains through polyploidization and X-ray mutagenesis to create 'designer' endophytes with improved traits like enhanced stress tolerance and compatibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional breeding methods are used for endophytes, then existing endophyte strains can be maintained, but inoculation frequency remains low and stability in elite germplasm is poor
Solution Approach 1:
The patent applies parameter changes by utilizing polyploidization (changing chromosome number from diploid to tetraploid) and X-ray mutagenesis (changing genetic structure) to create novel endophyte strains with improved stability and compatibility. These genetic parameter changes enable the endophytes to overcome limitations of conventional breeding methods and achieve both high inoculation frequency and stability in elite germplasm.
2Adaptability or versatility
If endophyte strains are selected based on traditional characteristics, then existing strains can be identified, but novel strains with desirable properties are limited
Solution Approach 1:
The patent applies preliminary action by performing polyploidization and X-ray mutagenesis treatments before the actual breeding and selection process. This preliminary genetic modification creates a diverse library of novel endophyte strains with enhanced properties, from which suitable strains can be selected for agricultural applications, thereby increasing the quantity and quality of available strains.
3Measurement precision
If genetic analysis methods are applied to characterize endophytes, then strain identification improves, but the complexity of the characterization process increases
Solution Approach 1:
The patent applies segmentation by dividing the complex characterization process into distinct modules: molecular characterization (using SSR markers and sequencing), metabolic profiling (using HPLC or mass spectrometry), and phenotypic assessment. This segmentation allows systematic evaluation of multiple traits independently, improving measurement precision while managing process complexity through structured analysis.
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
This approach enables the identification and development of novel endophyte strains with improved genetic and metabolic profiles, enhancing their compatibility and stability in plants, thereby increasing their utility in agriculture for producing beneficial bioactive compounds and improving plant resistance and stress tolerance.
Implementation Method 1
Molecular genetic markers such as simple sequence repeat (SSR) markers have been developed as diagnostic tests to distinguish between endophyte taxa and detect genetic variation within taxa.
Implementation Method 2
generating novel strains through polyploidization and X-ray mutagenesis to create 'designer' endophytes with improved traits
Implementation Method 3
generating novel strains through polyploidization and X-ray mutagenesis to create 'designer' endophytes with improved traits
Implementation Method 4
subjecting said endophytes to metabolic analysis
Data Source
AI summary
The present invention relates to a method for identifying and/or characterising an endophyte strain, said method including providing a plurality of samples of endophytes, subjecting said endophytes to genetic analysis; subjecting said endophytes to metabolic analysis and selecting endophytes having a desired genetic and metabolic profile. The present invention also relates to novel endophytes having a desired toxin profile wherein the endophyte produces significantly less toxic alkaloids compared with a control endophyte such as standard toxic (ST) endophyte; and/or significantly more alkaloids conferring beneficial properties compared with a control endophyte such as ST endophyte. The present invention also relates to endophyte variants having a desired genetic and metabolic profile, wherein said endophyte variants possess genetic and/or metabolic characteristics that result in a beneficial phenotype in a plant harbouring or otherwise associated with the endophyte variant. Preferably said endophyte variants are generated by polyploidisation or induced chromosome doubling.