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BackgroundPolyaspartic Acid-Calcium (PASP-Ca) is a versatile and eco-friendly amino acid complex, primarily recognized for bolstering nitrogen use efficiency and crop productivity. However, the core significance of this complex remains enigmatic in potato crop. We hypothesized that simultaneous application of PASP-Ca with potato genotypes characterized by substantial root systems and high genetic potentials for nitrogen-use efficiency (NUE) would best address this knowledge gap. Methods 2The synergistic effect of various PASP-Ca treatments on morphophysiological, N-related, and enzymatic parameters coupled with their transcript levels (shoot and root) in four potato genotypes having contrasting NUEs under low and high N supplies in aeroponics. ResultsPASP-Ca markedly boosted plant growth, yield components, and photosynthetic efficiency, with pronounced effects observed in nitrogen-efficient genotypes, especially Qingshu-9, emphasizing the importance of genotype selection in optimizing nitrogen utilization. Moreover, PASP-Ca treatments, particulartly LN-P100 significantly enhances root system architecture (RSA), contributing to expanded root dimensions and improved nutrient acquisition capacity, especially under nitrogen-deficient conditions. Carbohydrate metabolism in potato tubers benefits from PASP-Ca treatment, leading to increased starch content, thereby impacting tuber quality. Among the N-assimilating enzymes, a large genotypic variation was observed for glutamine synthetase (GS), which may be considered a potential trait for improving NUE. Molecular analysis further elucidated the underlying mechanisms, demonstrating the upregulation of essential genes involved in nitrogen metabolism. ConclusionsThe potential efficacy of PASP-Ca synergist as a novel accelerant for enhancing potato crop growth, biomass production, and nitrogen utilization efficiency, all coalescing seamlessly with the ethos of sustainable agricultural practices.
BackgroundPolyaspartic Acid-Calcium (PASP-Ca) is a versatile and eco-friendly amino acid complex, primarily recognized for bolstering nitrogen use efficiency and crop productivity. However, the core significance of this complex remains enigmatic in potato crop. We hypothesized that simultaneous application of PASP-Ca with potato genotypes characterized by substantial root systems and high genetic potentials for nitrogen-use efficiency (NUE) would best address this knowledge gap. Methods 2The synergistic effect of various PASP-Ca treatments on morphophysiological, N-related, and enzymatic parameters coupled with their transcript levels (shoot and root) in four potato genotypes having contrasting NUEs under low and high N supplies in aeroponics. ResultsPASP-Ca markedly boosted plant growth, yield components, and photosynthetic efficiency, with pronounced effects observed in nitrogen-efficient genotypes, especially Qingshu-9, emphasizing the importance of genotype selection in optimizing nitrogen utilization. Moreover, PASP-Ca treatments, particulartly LN-P100 significantly enhances root system architecture (RSA), contributing to expanded root dimensions and improved nutrient acquisition capacity, especially under nitrogen-deficient conditions. Carbohydrate metabolism in potato tubers benefits from PASP-Ca treatment, leading to increased starch content, thereby impacting tuber quality. Among the N-assimilating enzymes, a large genotypic variation was observed for glutamine synthetase (GS), which may be considered a potential trait for improving NUE. Molecular analysis further elucidated the underlying mechanisms, demonstrating the upregulation of essential genes involved in nitrogen metabolism. ConclusionsThe potential efficacy of PASP-Ca synergist as a novel accelerant for enhancing potato crop growth, biomass production, and nitrogen utilization efficiency, all coalescing seamlessly with the ethos of sustainable agricultural practices.
Browning is a common problem that occurs during potato processing; it is typically resolved by adding chemicals during the production process. However, there is a need to develop potato varieties that are resistant to browning due to a growing consumer interest in healthier diets. This study initially identified 275 potato varieties that are resistant to browning; these were narrowed down to eight varieties, with four of them being highly resistant. A hybrid population was developed by crossing the highly resistant CIP395109.29 with the easily browned Kexin 23. Bulked segregant analysis (BSA) was conducted, which identified 21 potato genes associated with anti-browning properties through sequencing data analysis and organization. The findings of this study lay a solid groundwork for future research on breeding potatoes with anti-browning traits, offer molecular markers for identifying anti-browning varieties, and serve as a valuable reference for further investigations into potato browning mechanisms.
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