ORIGINAL RESEARCH article
Front. Plant Sci.
Sec. Crop and Product Physiology
Integrated Transcriptomic and Metabolomic Analyses Reveal Optimized Cultivation Strategies for purple Potatoes (Solanum tuberosum L.)
Provisionally accepted
- 1Institute of specialty crop, Chongqing Academy of Agricultural Sciences, Chongqing, China
- 2Chongqing Academy of Agricultural Sciences, Chongqing, China
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Potato (Solanum tuberosum L.), a cornerstone of global food security, faces significant yield limita-tions worldwide. Fertilization regimes and planting density critically determine potato yield and quality. This study employed anthocyanin-rich purple potato cultivar 'Jinyun No.5' with superior nutritional quality as experimental material, manipulating basal fertilizer application rates and planting density to establish sustainable high-efficiency cultivation protocols for pigmented potatoes. The optimal cultivation scheme utilized 0.15 kg·m⁻² basal fertilizer and 5.25 plants·m⁻² density, maximizing yield while optimizing anthocyanin and starch content. Yield increased by 12.9% versus minimum density (3.75 plants·m⁻²) at equivalent fertilization, and by 6.6% versus minimum fertilization (0.05 kg·m⁻²) at equivalent density. Integrated metabolomic-transcriptomic analysis confirmed significant upregulation of anthocyanin synthase genes (ANS, DFR) and starch branching enzyme genes (SBEI, SBEII) in the optimal treatment, correlating with observed quality enhancements.
Keywords: Purple potato, Basal fertilizer, plant density, Anthocyanin, Starch
Received: 13 Aug 2025; Accepted: 04 Nov 2025.
Copyright: © 2025 Zhong, Yang, Liang and Qiang. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
* Correspondence: MA Qiang, maqiang2013@qq.com
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