Androgenesis-Based Doubled Haploidy: Past, Present, and Future Perspectives

Area of Science:

• Plant Science
• Molecular Biology
• Genetics

Background:

• Androgenesis is crucial for genetic gain in plant breeding, enabling haploid plant production via microgametophyte cell fate redirection.
• Past research concentrated on optimizing androgenesis protocols, often species-specific, due to unique nutritional needs compared to somatic embryogenesis.
• Understanding the molecular basis of androgenesis is key to expanding its application across diverse plant species and genotypes.

Purpose of the Study:

• To review the fundamental applications of androgenesis in plant breeding.
• To explore the role of genomics and gene editing in advancing androgenesis protocol development.
• To identify strategies for overcoming genotype specificity and recalcitrance in non-model plants.

Main Methods:

• Review of existing literature on androgenesis protocols and applications.
• Analysis of transcriptomic and epigenetic studies on induced microspores.
• Evaluation of gene transfer and genome editing techniques in microspore development.

Main Results:

• Transcriptomic and epigenetic analyses reveal key molecular players like microRNAs and histone deacetylase inhibitors in androgenesis.
• Specific compounds like ά-phytosulfokine can promote androgenesis in certain species.
• Gene editing technologies offer potential for precise genetic manipulation in microspores for breeding.

Conclusions:

• Androgenesis is a powerful tool for crop improvement, with ongoing research enhancing its efficiency and applicability.
• Genomics and gene editing are poised to revolutionize androgenesis by enabling precise genetic control and broader species adaptation.
• Overcoming genotype-specific limitations and recalcitrance remains a critical area for future research and development in plant breeding programs.