Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 2023 Apr 14;18(4):e0284510.
doi: 10.1371/journal.pone.0284510. eCollection 2023.

NP and 9311 are excellent population parents for screening QTLs of potassium-efficient rice

Tingchang Liu  1   2 , Liangli Bai  3 , Lifang Huang  1 , Donghai Mao  1
Affiliations

NP and 9311 are excellent population parents for screening QTLs of potassium-efficient rice

Tingchang Liu et al. PLoS One. .

Abstract

High and stable rice yields are critical to global food security, and potassium-deficient soils in East Asia have seriously limited rice production in the regions. It is feasible to screen potassium efficient quantitative trait locus(QTLs) from existing rice varieties to cope with rice production in potassium-deficient areas, and the selection of population parents is the key to locating major QTLs. After a long period of natural selection, potassium efficient rice varieties mainly exist in the region where the soil potassium level is low. The present study chose the representative twelve high-yielding rice varieties in east Asia, firstly, to measure plant height, fresh sheath weight, and fresh blade weight under hydroponic conditions. Based on the difference and consistency of the three parameters, NP as low potassium tolerant, and 9311 as low potassium sensitive rice variety were screened. We further analyzed the relative values of the six parameters of NP and 9311 treated with a culture medium containing different potassium (K+) concentrations and showed that the two varieties significantly differed in multiple low potassium concentrations. Meanwhile, we calculated the coefficient of variation of twelve rice varieties and most of those parameters reached a maximum at 4 mg/L K+, indicating that this concentration was suitable for screening potassium-efficient rice. We also measured the potassium content and the potassium-related traits in NP and 9311 tissues, and found that NP and 9311 significantly differed in potassium translocation. These differences may be responsible for the long-distance transport of potassium from the root to the aboveground part. In conclusion, we identified a pair of parents with significant differences in potassium translocation, which can be used to locate the relevant QTLs with high potassium efficiency to cope with the crisis of soil potassium deficiency in East Asia.

PubMed Disclaimer

Conflict of interest statement

The authors have declared that no competing interests exist.

Figures

Fig 1
Fig 1. Relative plant height of twelve rice varieties in different potassium concentration culture solution.
The dotted line is japonica rice and the solid line is indica rice.
Fig 2
Fig 2. Relative fresh sheath weight of twelve rice varieties in different potassium concentration culture solution.
The dotted line is japonica rice and the solid line is indica rice.
Fig 3
Fig 3. Relative fresh blade weight of twelve rice varieties in different potassium concentration culture solution.
The dotted line is japonica rice and the solid line is indica rice.
Fig 4
Fig 4. The variation coefficient of parameters of twelve rice varieties treated with different potassium concentration medium.
The dotted line is japonica rice and the solid line is indica rice.
Fig 5
Fig 5. Significance analysis of six parameters of NP and 9311 in different potassium concentration culture solution.
*: Significant difference at 0.05 level; **: Very significant difference at 0.01 level; ***: Highly significant difference at 0.001 level.
Fig 6
Fig 6. Phenotypic differences between NP and 9311 treated with low potassium (1, 4 mg/L K+) and common potassium (40 mg/L K+) medium.
a: Plant growth state; b: Root state of the plant.
See this image and copyright information in PMC

Similar articles

See all similar articles

Cited by

References

    1. Muthayya S, Sugimoto JD, Montgomery S, Maberly GF. An overview of global rice production, supply, trade, and consumption. Ann N Y Acad Sci. 2014;1324:7–14. 10.1111/nyas.12540 . - DOI - PubMed
    1. Heffer P, Prudhomme M, Tiejun RU. 2016–2020 fertilizer outlook (summary report). Phosphate & Compound Fertilizer. 2016.
    1. Santa-Mariea G, F R, J D. The HAK1 and HAK2 genes of barley encode high-affinity K + transporters that are also present in Arabidopsis. Plant Nutrition—Molecular Biology and Genetics. 1999:137–43. doi: 10.1007/978-94-017-2685-6_18 - DOI
    1. Lin-sheng A, Jin-Shan N, Gong-fu L. Physiological Characterestics of K-Deficit Tolerent Rice Variety. Plant Physiology Communication. 1995;31(4):257–9.
    1. Guodong L, Gengling L. A NEW STRATEGY ALLEVIATING SHORTAGE OF POTASSIUM RESOURCE IN CHINA. Scientia Agricultura Sinica. 1995;28(1):25–32. https://doi.org/CNKI:SUN:ZNYK.0.1995-01-003.

Publication types