A role for the OsHKT 2;1 sodium transporter in potassium use efficiency in rice

Hartley, Thomas Noel; Thomas, Alice Sarah; Maathuis, Franciscus Johannes Maria

doi:10.1093/jxb/erz113

Cited by 29 publications

(17 citation statements)

References 39 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The QTLs, qALU 5.2 , qFeU 5.2 , qZnU 4.1 , qPU 4.1 and qPU 5.2 , for uptake of Al, Fe, Zn and P, respectively, under aerobic direct-seeded situations were reported by Sandhu et al (2015). Hartley et al (2019) reported a key role of OsHKT2;1 (sodium transporter gene) in potassium use efficiency (KUE). The GWAS performed on a complex mapping population revealed co-location of QTL for Fe and P uptake near OsPT9, OsGLK1, nyc3, OsRPK1 and OsCCaMK genes associated with nutrient uptake, chloroplast development, symbiosis association and stay green phenotype (Sandhu et al, 2019a).…”

Section: Nutrient Uptakementioning

confidence: 88%

“…Hartley et al . (2019) reported a key role of OsHKT2;1 (sodium transporter gene) in potassium use efficiency (KUE). The GWAS performed on a complex mapping population revealed co‐location of QTL for Fe and P uptake near OsPT9 , OsGLK1 , nyc3 , OsRPK1 and OsCCaMK genes associated with nutrient uptake, chloroplast development, symbiosis association and stay green phenotype (Sandhu et al ., 2019a).…”

Section: Traits For Developing Ddsr Varietiesmentioning

confidence: 99%

See 1 more Smart Citation

More and more of less and less: Is genomics‐based breeding of dry direct‐seeded rice (DDSR) varieties the need of hour?

Sagare¹,

Abbai

Jain³

et al. 2020

Plant Biotechnology Journal

View full text Add to dashboard Cite

Rice is a staple food for half of the world's population. Changing climatic conditions, water and labour scarcity are the major challenges that shall limit future rice production. Dry direct-seeded rice (DDSR) is emerging as an efficient, resources conserving, mechanized, climate smart and economically viable strategy to be adopted as an alternative to puddled transplanted rice (TPR) with the potential to address the problem of labour-water shortages and ensure sustainable rice cultivation. Despite these benefits, several constraints obstruct the adoption of DDSR. In principle, the plant type for DDSR should be different from one for TPR, which could be achieved by developing rice varieties that combine the traits of upland and lowland varieties. In this context, recent advances in precise phenotyping and NGS-based trait mapping led to identification of promising donors and QTLs/genes for DDSR favourable traits to be employed in genomic breeding. This review discusses the important traits influencing DDSR, research studies to clarify the need for breeding DDSR-specific varieties to achieve enhanced grain yield, climate resilience and nutrition demand. We anticipate that in the coming years, genomic breeding for developing DDSR-specific varieties would be a regular practice and might be further strengthened by combining superior haplotypes regulating important DDSR traits by haplotypebased breeding.

show abstract

Section: Nutrient Uptakementioning

confidence: 88%

Section: Traits For Developing Ddsr Varietiesmentioning

confidence: 99%

More and more of less and less: Is genomics‐based breeding of dry direct‐seeded rice (DDSR) varieties the need of hour?

Sagare¹,

Abbai

Jain³

et al. 2020

Plant Biotechnology Journal

View full text Add to dashboard Cite

show abstract

“…K use efficiency (KUE) and the agronomic efficiency of K (KAE) are two important indicators for measuring agriculture production sustainability [64][65][66]. Figure 4 depicts represents the average IKS at regional scale.…”

Section: K Use Efficiency and Agronomic Efficiency Of K Under Different K Inputmentioning

confidence: 99%

“…K use efficiency (KUE) and the agronomic efficiency of K (KAE) are two important indicators for measuring agriculture production sustainability [64][65][66]. Figure 4 depicts the variation trend of KUE and KAE under different K rates so as to establish their response curves to K rates.…”

Section: K Use Efficiency and Agronomic Efficiency Of K Under Different K Inputmentioning

confidence: 99%

Evaluation of the Regional-Scale Optimal K Rate Based on Sustainable Apple Yield and High-Efficiency K Use in Loess Plateau and Bohai Bay of China: A Meta-Analysis

Tang¹,

Wang²,

DianYu³

et al. 2021

Agronomy

View full text Add to dashboard Cite

In order to meet the growing food demand of the global population and maintain sustainable soil fertility, there is an urgent need to optimize fertilizer application amount in agricultural production practices. Most of the existing studies on the optimal K rates for apple orchards were based on case studies and lack information on optimizing K-fertilizer management on a regional scale. Here, we used the method of combining meta-analysis with the K application rate-yield relationship model to quantify and summarize the optimal K rates of the Loess Plateau and Bohai Bay regions in China. We built a dataset based on 159 observations obtained from 18 peer-reviewed literature studies distributed in 15 different research sites and evaluated the regional-scale optimal K rates for apple production. The results showed that the linear plus platform model was more suitable for estimating the regional-scale optimal K rates, which were 208.33 and 176.61 kg K ha−1 for the Loess Plateau and Bohai Bay regions of China, respectively. Compared with high K application rates, the optimal K rates increased K use efficiency by 45.88–68.57%, with almost no yield losses. The optimal K rates also enhanced the yield by 6.30% compared with the low K application rates.

show abstract

“…In conditions of K + deficiency, where low/ moderate concentrations of Na + are known to be able to contribute to turgor building and growth in a number of plant species including rice (Yoshida and Castaneda, 1969;Wakeel et al, 2011;Kronzucker et al, 2013), OsHKT2;1, which is involved in root Na + uptake, was shown through the analysis of knock-out mutants to play a role in plant biomass production (Horie et al, 2007). OsHKT2;1 gene was also identified as likely candidate for a QTL of K + use efficiency in low-K + -growth condition, correlating with high shoot Na + content (Miyamoto et al, 2012;Hartley et al, 2020). It should be noted that in quite salt tolerant species like barley, similar HKT-mediated beneficial (likely osmotic) effects of Na + on plant growth were noticed, although in K + -replete and high saline conditions, upon overexpression of the HKT2;1 barley gene (Mian et al, 2011).…”

mentioning

confidence: 99%

Constitutive Contribution by the Rice OsHKT1;4 Na+ Transporter to Xylem Sap Desalinization and Low Na+ Accumulation in Young Leaves Under Low as High External Na+ Conditions

et al. 2020

View full text Add to dashboard Cite

show abstract

A role for the OsHKT 2;1 sodium transporter in potassium use efficiency in rice

Abstract: Genome-wide association studies were used to analyse potassium use efficiency in rice. Novel associations were found along with a role for sodium replacement via the OsHKT2;1 sodium transporter.

Cited by 29 publications

References 39 publications

More and more of less and less: Is genomics‐based breeding of dry direct‐seeded rice (DDSR) varieties the need of hour?

More and more of less and less: Is genomics‐based breeding of dry direct‐seeded rice (DDSR) varieties the need of hour?

Evaluation of the Regional-Scale Optimal K Rate Based on Sustainable Apple Yield and High-Efficiency K Use in Loess Plateau and Bohai Bay of China: A Meta-Analysis

Constitutive Contribution by the Rice OsHKT1;4 Na+ Transporter to Xylem Sap Desalinization and Low Na+ Accumulation in Young Leaves Under Low as High External Na+ Conditions

Contact Info

Product

Resources

About