MADS-box Gene Mutations for Tomato Inflorescence Architecture
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Solution Overview
Problem
Improving tomato inflorescence architecture to boost flower and fruit production has remained challenging due to genetic incompatibilities and the difficulty of transferring complex polygenic traits from wild species, with existing breeding methods often resulting in high flower abortion and low fruit production.
Innovation Solution
Identification and combination of mutations in MADS-box transcription factor genes, such as Solyc04g005320, Solyc12g038510, and Solyc03g114840, to create genetically altered Solanaceae plants with a range of inflorescence types, including weakly branched varieties that enhance flower and fruit production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional breeding methods are used to transfer complex polygenic traits from wild species, then inflorescence architecture modification is attempted, but genetic incompatibilities and difficulty of transferring traits occur
Solution Approach 1:
The patent segments the complex polygenic trait transfer problem into individual gene mutations. Instead of attempting to transfer entire polygenic architectures from wild species, the invention identifies and modifies specific MADS-box genes (Solyc04g005320, Solyc12g038510, Solyc03g114840) that control inflorescence branching, thereby simplifying the breeding process while achieving the desired architectural changes.
Solution Approach 2:
The patent applies parameter changes by creating a quantitative range of inflorescence phenotypes through controlled mutations in MADS-box genes. By varying the degree and combination of mutations in these key regulatory genes, the invention generates a spectrum of inflorescence architectures from weakly branched to highly branched, allowing precise control over the target parameter without the complexity of traditional polygenic transfer.
2Productivity
If existing breeding methods are used to increase flower production, then inflorescence complexity is modified, but high flower abortion and low fruit production occur
Solution Approach 1:
The patent applies dynamics by creating a quantitative range of inflorescence phenotypes rather than a single fixed architecture. Through controlled mutations in MADS-box genes, the invention generates a spectrum of branching patterns that can be optimized for both flower production and fruit retention, allowing dynamic adjustment of the phenotype to balance the contradiction between increasing flower numbers and maintaining fruit retention reliability.
Data Source
AI summary
Aspects of the disclosure relate to plants, such as Solanaceae plants containing one or more of a mutant Solyc04g005320 gene (or a homolog thereof), a mutant Solycl2g038510 gene (or a homolog thereof), and a mutant Solyc03gl14840 gene (or a homolog thereof), as well as methods of producing such plants. In some aspects, such plants have one or more improved traits, such as modified inflorescence architecture, modified flower number, modified fruit number, higher yield, higher quality products, and higher fruit productivity.