Strategies for improving phosphorus acquisition efficiency of crop plants

Ramaekers, Lara; Remans, Roseline; Rao, Idupulapati M.; Blair, Matthew W.; Vanderleyden, Jozef

doi:10.1016/j.fcr.2010.03.001

Cited by 294 publications

(192 citation statements)

References 89 publications

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“…Considerable genetic variation in PAE and PUE has been reported in a wide range of barley and wheat genotypes (Gahoonia and Nielsen, 1996;Manske et al, 2001;Ozturk et al, 2005;Liao et al, 2008;George et al, 2011), but there have been few studies on the genetic variation in expression levels of Pi transporters and the relationships between the expression of Pi transporters and PAE or PUE (Ramaekers et al, 2010). To address this issue, we used barley, a diploid relative of hexaploid wheat, as a model system for winter cereals to study the functions of PHT1 genes involved in the acquisition and remobilization of Pi (Preuss et al, 2010(Preuss et al, , 2011.…”

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confidence: 99%

“…PAE refers to the ability of the plant to mobilize P from poorly soluble sources and/or to take up the soluble Pi available in the soil solution (Narang et al, 2000), whereas PUE is the amount of biomass produced per unit of acquired P (Ozturk et al, 2005;Wang et al, 2010). PAE is considered to be a major component of overall P efficiency (Ozturk et al, 2005;Ismail et al, 2007;Ramaekers et al, 2010), but PUE can influence PAE. P supply to plants is often fluctuating; therefore, P remobilization within the plant is critical for plant survival (Drew and Saker, 1984;Marschner and Cakmak, 1986;Jeschke et al, 1997;Vance et al, 2003;Huang et al, 2008).…”

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Phosphate Utilization Efficiency Correlates with Expression of Low-Affinity Phosphate Transporters and Noncoding RNA, IPS1, in Barley

et al. 2011

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Genetic variation in phosphorus (P) efficiency exists among wheat (Triticum aestivum) and barley (Hordeum vulgare) genotypes, but the underlying mechanisms for the variation remain elusive. High-and low-affinity phosphate (Pi) PHT1 transporters play an indispensable role in P acquisition and remobilization. However, little is known about genetic variation in PHT1 gene expression and association with P acquisition efficiency (PAE) and P utilization efficiency (PUE). Here, we present quantitative analyses of transcript levels of high-and low-affinity PHT1 Pi transporters in four barley genotypes differing in PAE. The results showed that there was no clear pattern in the expression of four paralogs of the high-affinity Pi transporter HvPHT1;1 among the four barley genotypes, but the expression of a low-affinity Pi transporter, HvPHT1;6, and its close homolog HvHPT1;3 was correlated with the genotypes differing in PUE. Interestingly, the expression of HvPHT1;6 and HvPHT1;3 was correlated with the expression of HvIPS1 (for P starvation inducible; noncoding RNA) but not with HvIPS2, suggesting that HvIPS1 plays a distinct role in the regulation of the low-affinity Pi transporters. In addition, high PUE was found to be associated with high root-shoot ratios in low-P conditions, indicating that high carbohydrate partitioning into roots occurs simultaneously with high PUE. However, high PUE accompanying high carbon partitioning into roots could result in low PAE. Therefore, the optimization of PUE through the modification of low-affinity Pi transporter expression may assist further improvement of PAE for low-input agriculture systems.

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Phosphate Utilization Efficiency Correlates with Expression of Low-Affinity Phosphate Transporters and Noncoding RNA, IPS1, in Barley

et al. 2011

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“…Entre essas estratégias, as mais comuns são o desenvolvimento de maior quantidade de raízes basais e axiais com grande número de pelos radiculares, a formação de exsudatos radiculares e o crescimento das raízes em ângulos diferentes (Ramaekers et al, 2010;Lynch, 2011).…”

Section: Resultsunclassified

Seleção de linhagens de sorgo granífero eficientes e responsivas à aplicação de fósforo

Rodrigues

Magalhães

Guimarães

et al. 2014

Pesq. agropec. bras.

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Resumo -O objetivo deste trabalho foi selecionar linhagens de sorgo simultaneamente responsivas ao fósforo e com elevada eficiência produtiva quanto a esse nutriente. Foram avaliadas 36 linhagens endogâmicas, em delineamento de blocos ao acaso, com duas repetições. Os caracteres usados para avaliação da eficiência produtiva foram produtividade média e eficiências de absorção, de utilização e de uso de fósforo, com e sem adubação fosfatada. Para análise da responsividade ao nutriente, foram avaliados caracteres de produtividade relativa e de eficiências de recuperação aparente, fisiológica e agronômica. Há variabilidade genética entre as linhagens quanto às eficiências de absorção, de utilização e de uso do fósforo, e quanto à responsividade ao nutriente, o que sugere a possibilidade de produção de híbridos destinados a nichos de mercado diferentes. As linhagens mais responsivas foram P9401, BR007B, BR008B, SC414-12E e SC566, e as mais eficientes, sob baixa disponibilidade de fósforo, foram ATF40B, SC566, BR005R, CMSXS225 e BR012 (R6). As linhagens ATF40B, ATF54 (f61), ATF54 (f596), QL3 e SC566 apresentaram melhor desempenho simultâneo das diferentes eficiências avaliadas e da responsividade ao fósforo. Apenas a avaliação do caráter produtividade, sob diferentes disponibilidades de fósforo, já permite identificar linhagens eficientes e responsivas ao fósforo.Termos para indexação: Sorghum bicolor, eficiência de absorção, estresse nutricional, índice de seleção, seleção simultânea. Selection of grain sorghum lines efficient and responsive to phosphorus applicationAbstract -The objective of this work was to select sorghum lines simultaneously responsive to phosphorus fertilization and with high productive efficiency regarding this nutrient. Thirty six sorghum inbred lines were evaluated in a randomized complete block design, with two replicates. The traits used to evaluate the productive efficiency were average yield and efficiencies of absorption, utilization, and use of phosphorus, with and without phosphorus fertilization. For the analysis of the responsivity to the nutrient, the evaluated traits were relative yield and apparent recovery, physiological, and agronomic efficiencies. The lines were genetically divergent as to the efficiencies of absorption, utilization, and use of phosphorus, and to the responsivity to the nutrient, suggesting the possibility of producing hybrids destined to different market niches. The most responsive lines were P9401, BR007B, BR008B, SC414-12E, and SC566, and the most efficient ones under low phosphorus availability were ATF40B, SC566, BR005R, CMSXS225, and BR012 (R6). The ATF40B, ATF54 (f61), ATF54 (f596), QL3, and SC566 lines showed better simultaneous performance for the different evaluated efficiencies and for the responsivity to phosphorus. The evaluation of productivity alone, under different phosphorus availabilities, already makes it possible to identify efficient and responsive lines to phosphorus.

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“…Some transcriptomic studies of www.intechopen.com low-P adaptation strategies have also been carried out using cDNA arrays (Hammond et al, 2003;Misson et al, 2005;Ramaekers et al, 2010;Uhde-Stone et al, 2003;Wang et al, 2002;Wasaki et al, 2003bWasaki et al, , 2006Wu et al, 2003). Although some aspects of plant strategies for coping with P-deficient conditions are understood, the majority are not; a broad view of gene expression is necessary to fully elucidate all of the mechanisms involved (Ramaekers et al, 2010). In this chapter, we review the progress in understanding the transcriptomic changes by P deficiency in rice plants, which is a model of Gramineae plants and also relatively tolerant of low P and low pH conditions.…”

Section: Wwwintechopencommentioning

confidence: 99%

“…Moreover, P fertilizer is receiving more attention as a nonrenewable resourse (Cordell et al, 2009;Steen, 1998). For sustainable P management in agriculture on tropical and subtropical soils, it is essential to define the mechanisms involved in making plants more efficient in P acquisition and use (Lynch, 2011;Ramaekers et al, 2010;Rao et al, 1999). P is a constituent of phospholipids (PL), nucleic acids, nucleosides, coenzymes, and phosphate esters in plants.…”

Section: Wwwintechopencommentioning

confidence: 99%

Physiological and Biochemical Mechanisms of Plant Adaptation to Low-Fertility Acid Soils of the Tropics: The Case of Brachiariagrasses

Khan¹,

Rao²,

Wasaki³

et al. 2011

Principles, Application and Assessment in Soil Science

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Strategies for improving phosphorus acquisition efficiency of crop plants

Cited by 294 publications

References 89 publications

Phosphate Utilization Efficiency Correlates with Expression of Low-Affinity Phosphate Transporters and Noncoding RNA, IPS1, in Barley

Phosphate Utilization Efficiency Correlates with Expression of Low-Affinity Phosphate Transporters and Noncoding RNA, IPS1, in Barley

Seleção de linhagens de sorgo granífero eficientes e responsivas à aplicação de fósforo

Physiological and Biochemical Mechanisms of Plant Adaptation to Low-Fertility Acid Soils of the Tropics: The Case of Brachiariagrasses

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