TaCaM-3A Gene Editing for Wheat Sprouting Resistance and Yield
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Solution Overview
Problem
Current wheat breeding techniques struggle to effectively enhance sprouting resistance due to unclear practical application of known dormancy genes, leading to slow progress in developing wheat varieties resistant to sprouting during overcast and rainy weather, which causes quality deterioration and yield decline.
Innovation Solution
Identification and application of the TaCaM-3A gene for seed dormancy in wheat, utilizing gene editing technologies like CRISPR/Cas9 to regulate seed dormancy and sprouting resistance by reducing or deleting the gene's expression, thereby enhancing sprouting resistance and yield.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If known dormancy genes (TaVp-1, TaMFT, TaSdr, etc.) are used for breeding, then sprouting resistance should be improved, but the practical application value is unclear resulting in slow breeding progress
Solution Approach 1:
The patent changes the parameter of gene expression levels by identifying TaCaM-3A as a key negative regulator and using gene editing to reduce its expression, thereby converting the unclear application of known genes into a targeted approach with measurable expression changes and improved sprouting resistance
Solution Approach 2:
The patent replaces traditional mechanical breeding methods with gene editing technology (CRISPR/Cas9) to directly modify the TaCaM-3A gene, substituting the slow process of conventional breeding with a precise molecular-level intervention that accelerates breeding progress while improving sprouting resistance
2Reliability
If gene editing technology is used to reduce TaCaM-3A expression, then sprouting resistance is improved, but the complexity of the breeding process increases
Solution Approach 1:
The patent extracts the specific function of TaCaM-3A as a negative regulator of seed dormancy and isolates it as the primary target for gene editing, removing the complexity of dealing with multiple dormancy genes simultaneously and focusing breeding efforts on a single key gene to improve sprouting resistance
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 TaCaM-3A gene significantly improves sprouting resistance and wheat yield by increasing grain size, weight, and yield per plant, providing a valuable target for breeding improved wheat varieties.
Implementation Method 1
The gene editing technology uses a CRISPR/Cas9 system, and an sgRNA target sequence used by the CRISPR/Cas9 system is a sequence as shown in SEQ ID NO.15 or SEQ ID NO.16
Implementation Method 2
reduction of the expression level of the gene TaCaM-3A in wheat or deletion of function of the gene TaCaM-3A is achieved through RNA interference or a gene editing technology
Data Source
AI summary
The present disclosure relates to the field of wheat genetic breeding technology, and provides a gene TaCaM-3A for seed dormancy in wheat and application thereof. The full-length sequence of gene TaCaM-3A is shown in SEQ NO.1. The present disclosure identifies a gene TaCaM-3A that negatively regulating seed dormancy and sprouting resistance. Functional loss of this gene can significantly enhance sprouting resistance of wheat varieties, and increase grain length, grain width, and yield per plant. This gene has the potential to simultaneously improve sprouting resistance and yield of wheat, and has significant breeding application value in wheat sprouting-resistance breeding.