Effects of different potassium application rates on potato yield and the expression of CIPK8, a candidate gene involved in potassium uptake
- 1College of Life Sciences, Inner Mongolia Agriculture University , , ,
- 2Inner Mongolia Autonomous Region Agriculture and Animal Husbandry Technology Extension Center , , ,
- 3Inner Mongolia Xinyu Seed Industry Co., Ltd. , , ,
Abstract
Introduction: Potassium is critical for potato yield, but low use efficiency dueto improper fertilization limits production.
Methods: Here, we investigated the effects of different potassium applicationrates (0, 120, 180, 240, and 300 kg·hm ² K?O in 2024; and 0, 180, 240, and300 kg·hm ² K ₂ O in 2025) on potato yield and CIPK8 expression over twofield seasons.
Results: Yield peaked at 240 kg·hm ² (K240), increasing by 23–29% over thecontrol. CIPK8 gene and protein expression followed a unimodal pattern,peaking at 90 days after planting (DAP; tuber bulking stage), with K240inducing >50% higher expression than K0 and significantly higher expressionthan K300. Fluorescence in situ hybridization detected CIPK8 sequences inthe nucleus, while immunofluorescence detected CIPK8 protein in thenucleus, cytoplasm, and membrane.
Discussion: Our results suggest that K240 is associated with the highestCIPK8 expression and potato yield, suggesting CIPK8 as a potential candidateinvolved in potassium uptake regulation. However, further functionalvalidation is needed to establish a causal relationship. This study provides amolecular basis for efficient potassium management in potato.
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BibTeX
@article{gai2026effects,
title = {{Effects of different potassium application rates on potato yield and the expression of CIPK8, a candidate gene involved in potassium uptake}},
author = {Yaoyao Gai and Dong Wang and Yikun Li and Zhiping Li and Shujuan Wang and Wenrui Zhao and Xinyao Shi and Ziyi Zhang},
journal = {Frontiers in plant science},
year = {2026},
month = sep,
doi = {10.3389/fpls.2026.1912167},
url = {https://europepmc.org/article/PMC/PMC13662108},
note = {CC BY},
}
RIS
TY - JOUR
TI - Effects of different potassium application rates on potato yield and the expression of CIPK8, a candidate gene involved in potassium uptake
AU - Yaoyao Gai
AU - Dong Wang
AU - Yikun Li
AU - Zhiping Li
AU - Shujuan Wang
AU - Wenrui Zhao
AU - Xinyao Shi
AU - Ziyi Zhang
PY - 2026
DA - 2026/09/30
JO - Frontiers in plant science
DO - 10.3389/fpls.2026.1912167
UR - https://europepmc.org/article/PMC/PMC13662108
AB - Introduction: Potassium is critical for potato yield, but low use efficiency dueto improper fertilization limits production. Methods: Here, we investigated the effects of different potassium applicationrates (0, 120, 180, 240, and 300 kg·hm ² K?O in 2024; and 0, 180, 240, and300 kg·hm ² K ₂ O in 2025) on potato yield and CIPK8 expression over twofield seasons. Results: Yield peaked at 240 kg·hm ² (K240), increasing by 23–29% over thecontrol. CIPK8 gene and protein expression followed a unimodal pattern,peaking at 90 days after planting (DAP; tuber bulking stage), with K240inducing >50% higher expression than K0 and significantly higher expressionthan K300. Fluorescence in situ hybridization detected CIPK8 sequences inthe nucleus, while immunofluorescence detected CIPK8 protein in thenucleus, cytoplasm, and membrane. Discussion: Our results suggest that K240 is associated with the highestCIPK8 expression and potato yield, suggesting CIPK8 as a potential candidateinvolved in potassium uptake regulation. However, further functionalvalidation is needed to establish a causal relationship. This study provides amolecular basis for efficient potassium management in potato.
SN - 1664-462X
ER -