Impact of Global Climate Change on Potato Diseases and Strategies for Their Mitigation

Lal, Mehi; Yadav, Saurabh; Pant, Rajendra; Dua, V. K.; Singh, B. P.; Kaushik, S. K.

doi:10.4018/978-1-5225-5487-5.ch007

Cited by 2 publications

(1 citation statement)

References 48 publications

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“…Planting crops that are more resistant to pathogens and abiotic stressors and, therefore, require fewer inputs is one way to minimize the impact of agriculture. Potatoes are reliably grown in diverse landscapes and environmental conditions, but abiotic and biotic stressors, including water stress, heat stress, and pathogens can negatively impact yield and tuber quality [ 3 ]. Reliance upon clonal propagation renders potato production more vulnerable to vertical pathogen transmission and spread as compared to crops planted with true seed [ 4 ].…”

Section: Introductionmentioning

confidence: 99%

Transcriptome and Small RNA Profiling of Potato Virus Y Infected Potato Cultivars, Including Systemically Infected Russet Burbank

Ross

Zidack

McDonald

et al. 2022

Viruses

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Potatoes are the world’s most produced non-grain crops and an important food source for billions of people. Potatoes are susceptible to numerous pathogens that reduce yield, including Potato virus Y (PVY). Genetic resistance to PVY is a sustainable way to limit yield and quality losses due to PVY infection. Potato cultivars vary in their susceptibility to PVY and include susceptible varieties such as Russet Burbank, and resistant varieties such as Payette Russet. Although the loci and genes associated with PVY-resistance have been identified, the genes and mechanisms involved in limiting PVY during the development of systemic infections have yet to be fully elucidated. To increase our understanding of PVY infection, potato antiviral responses, and resistance, we utilized RNA sequencing to characterize the transcriptomes of two potato cultivars. Since transcriptional responses associated with the extreme resistance response occur soon after PVY contact, we analyzed the transcriptome and small RNA profile of both the PVY-resistant Payette Russet cultivar and PVY-susceptible Russet Burbank cultivar 24 h post-inoculation. While hundreds of genes, including terpene synthase and protein kinase encoding genes, exhibited increased expression, the majority, including numerous genes involved in plant pathogen interactions, were downregulated. To gain greater understanding of the transcriptional changes that occur during the development of systemic PVY-infection, we analyzed Russet Burbank leaf samples one week and four weeks post-inoculation and identified similarities and differences, including higher expression of genes involved in chloroplast function, photosynthesis, and secondary metabolite production, and lower expression of defense response genes at those time points. Small RNA sequencing identified different populations of 21- and 24-nucleotide RNAs and revealed that the miRNA profiles in PVY-infected Russet Burbank plants were similar to those observed in other PVY-tolerant cultivars and that during systemic infection ~32% of the NLR-type disease resistance genes were targeted by 21-nt small RNAs. Analysis of alternative splicing in PVY-infected potato plants identified splice variants of several hundred genes, including isoforms that were more dominant in PVY-infected plants. The description of the PVYN-Wi-associated transcriptome and small RNA profiles of two potato cultivars described herein adds to the body of knowledge regarding differential outcomes of infection for specific PVY strain and host cultivar pairs, which will help further understanding of the mechanisms governing genetic resistance and/or virus-limiting responses in potato plants.

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Section: Introductionmentioning

confidence: 99%

Transcriptome and Small RNA Profiling of Potato Virus Y Infected Potato Cultivars, Including Systemically Infected Russet Burbank

Ross

Zidack

McDonald

et al. 2022

Viruses

View full text Add to dashboard Cite

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Polymorphism of the available potato gene pool for resistance to abiotic and biotic factors of the environment and its practical use

Bondus

Kharchenko

Furdyha

et al. 2022

The Journal of v. N. Karazin Kharkiv National University, Series "Biology"

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The article presents the results of 1954-2021 studies on the potato polymorphism as a consequence of species evolution and practical application of these investigations. The issue of adaptability of valuable genes of potato, which contributed to its preservation in nature for a long time, is covered, and the potato evolution is traced on living material. It is noted that some species of this crop do not exist any longer and, given this, the importance of the plant genetic bank as a depository of material and intellectual assets of the people of Ukraine is stressed. The studies allowed for identification of valuable potato accessions, analysis of the genealogy of individual cultivars, which provided an opportunity to investigate the relationships between modern cultivars and their ancestors. The identified or newly created valuable potato accessions found further practical use, as they were involved in breeding, scientific and educational programs. Due to multi-year research aimed at targeted involvement, effectively use and preservation of the authenticity of the valuable gene pool of potatoes as well as at optimization of the qualitative and quantitative composition of the National Bank of Plant Genetic Resources of Ukraine, a pedigree database on 301 accessions from 18 countries with certificates for 35 valuable unique accessions was formed and registered with the National Center for Plant Genetic Resources. We also built-up collections of 6 different types, specifically, a trait collection for yield including 46 accessions from 8 countries; a trait collection for starch content and technological scores (61 accessions from 5 countries); a working trait collection for large tubers (121 accessions from 16 countries); a working trait collection for resistance to viral diseases (31 accessions from 7 countries); and a trait collection for distinctness traits (568 accessions from 15 countries). The above collections and accessions of the potato gene pool are a concentrated reserve of valuable genes as well as material and an intellectual asset of the people of Ukraine; they play an important role in improving the welfare of the nation and the strength of the state, increase its scientific, intellectual and spiritual potentials and need preserving in a viable state and genetic integrity.

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Impact of Global Climate Change on Potato Diseases and Strategies for Their Mitigation

Cited by 2 publications

References 48 publications

Transcriptome and Small RNA Profiling of Potato Virus Y Infected Potato Cultivars, Including Systemically Infected Russet Burbank

Transcriptome and Small RNA Profiling of Potato Virus Y Infected Potato Cultivars, Including Systemically Infected Russet Burbank

Polymorphism of the available potato gene pool for resistance to abiotic and biotic factors of the environment and its practical use

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