Germplasm, Breeding, and Genomics in Potato Improvement of Biotic and Abiotic Stresses Tolerance.

Jagesh Kumar Tiwari,Clarissa Challam,Vinod Kumar,Rajesh K Singh,Hemant B Kardile,Rasna Zinta,Satish K Luthra,Sharmistha Naik,Anuj K Poonia,Tanuja Buckseth,Manoj Kumar,Nisha Bhatia,Dalamu Dalamu

doi:10.3389/fpls.2022.805671

Abstract

Potato is one of the most important food crops in the world. Late blight, viruses, soil and tuber-borne diseases, insect-pests mainly aphids, whiteflies, and potato tuber moths are the major biotic stresses affecting potato production. Potato is an irrigated and highly fertilizer-responsive crop, and therefore, heat, drought, and nutrient stresses are the key abiotic stresses. The genus Solanum is a reservoir of genetic diversity, however, a little fraction of total diversity has been utilized in potato breeding. The conventional breeding has contributed significantly to the development of potato varieties. In recent years, a tremendous progress has been achieved in the sequencing technologies from short-reads to long-reads sequence data, genomes of Solanum species (i.e., pan-genomics), bioinformatics and multi-omics platforms such as genomics, transcriptomics, proteomics, metabolomics, ionomics, and phenomics. As such, genome editing has been extensively explored as a next-generation breeding tool. With the available high-throughput genotyping facilities and tetraploid allele calling softwares, genomic selection would be a reality in potato in the near future. This mini-review covers an update on germplasm, breeding, and genomics in potato improvement for biotic and abiotic stress tolerance.

Highlights

Potato (Solanum tuberosum L.) is the third most important food crop of the world after rice and wheat
The rapid advancements in sequencing technologies, multi-omics approaches, genome editing, and genomic selection coupled with softwares/bioinformatics allow discovery of SNP markers, genes, and regulatory elements for breeding and to enhance understanding of potato biology (Aksoy et al, 2015)
This mini-review highlights the prospects of germplasm, breeding, and genomics in potato improvement for biotic and abiotic stresses tolerance

Summary

Introduction

Potato (Solanum tuberosum L.) is the third most important food crop of the world after rice and wheat. The rapid advancements in sequencing technologies, multi-omics approaches, genome editing, and genomic selection coupled with softwares/bioinformatics allow discovery of SNP markers, genes, and regulatory elements for breeding and to enhance understanding of potato biology (Aksoy et al, 2015). Numerous genes/QTLs have been mapped in potato for various traits like late blight resistance (Hein et al, 2009) and drought stress (Anithakumari et al, 2012).

Results

Conclusion