Mutation Breeding in Tomato: Advances, Applicability and Challenges.

Area of Science:

• Plant breeding and genetics
• Crop improvement strategies
• Molecular biology techniques

Background:

• Induced mutagenesis is a key strategy for enhancing crop traits without disrupting the genetic background.
• Traditional mutagenesis methods (physical, chemical, insertional) are effective but can be random.
• Genome editing offers precise mutations but faces regulatory hurdles and adaptation challenges.

Purpose of the Study:

• To review current induced mutagenesis methods for tomato crop improvement.
• To discuss the potential and challenges of genome editing in tomato.
• To highlight advanced sequencing-based mutation mapping approaches for accelerating tomato breeding.

Main Methods:

• Review of physical, chemical, and insertional mutagenesis techniques.
• Analysis of genome-editing applications and challenges in tomato and other crops.
• Examination of next-generation sequencing-based mutation mapping approaches (Mutmap, MutChromeSeq, whole-genome sequencing).

Main Results:

• Induced mutagenesis remains a promising approach for tomato trait improvement, especially given regulatory uncertainties surrounding genome editing.
• Novel sequencing techniques significantly accelerate the detection of induced mutations and understanding of trait development.
• Integration of existing tomato mutant resources with new mapping technologies can rapidly enhance crop quality and yield.

Conclusions:

• Both random mutagenesis and precise genome editing have roles in tomato improvement, with mutagenesis offering a more immediate solution due to regulatory factors.
• Advanced sequencing technologies are crucial for efficiently identifying causal mutations and accelerating breeding programs.
• Combining established mutant resources with modern mapping tools is essential for rapid progress in tomato breeding for enhanced quality and yield.