How a phosphorus‐acquisition strategy based on carboxylate exudation powers the success and agronomic potential of lupines (Lupinus, Fabaceae)

American Journal of Botany, Journal Year: 2013, Volume and Issue: 100(2), P. 263 - 288

Published: Jan. 25, 2013

Lupines ( Lupinus species; Fabaceae) are an ancient crop with great potential to be developed further for high‐protein feed and food, cover crops, phytoremediation. Being legumes, they capable of symbiotically fixing atmospheric nitrogen. However, species appear nonmycorrhizal or weakly mycorrhizal at most; instead some produce cluster roots, which release vast amounts phosphate‐mobilizing carboxylates (inorganic anions). Other lupines cluster‐like function in a similar manner, large without specialized roots. These traits associated nutrient acquisition make ideally suited either impoverished soils phosphorus that is poorly available most plants, e.g., acidic alkaline soils. Here we explore how common the phosphorus‐acquisition strategy based on exudation genus , concluding it very likely more widespread than generally acknowledged. This trait may partly account role as pioneers invasive species, but also makes them suitable plants while reach “peak phosphorus”.

Language: Английский

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Phosphorus acquisition efficiency in arbuscular mycorrhizal maize is correlated with the abundance of root‐external hyphae and the accumulation of transcripts encoding PHT1 phosphate transporters

New Phytologist, Journal Year: 2017, Volume and Issue: 214(2), P. 632 - 643

Published: Jan. 18, 2017

Plant interactions with arbuscular mycorrhizal fungi have long attracted interest for their potential to promote more efficient use of mineral resources in agriculture. Their use, however, remains limited by a lack understanding the processes that determine outcome symbiosis. In this study, impact host genotype on growth response inoculation was investigated panel diverse maize lines. A 30 lines evaluated and without fungi. The line Oh43 identified show superior and, along five other reference lines, characterized greater detail split-compartment system, using 33 P quantify phosphorus uptake. Changes relative indicated variation capacity profit from Shoot phosphate content, abundance root-internal -external fungal structures, uptake, accumulation transcripts encoding plant PHT1 family transporters varied among Superior is correlated extensive development root-external hyphae, specific Pht1 high uptake plants. data indicate genetic factors influence strategy an performance.

Language: Английский

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Crop residue contributions to phosphorus pools in agricultural soils: A review

Soil Biology and Biochemistry, Journal Year: 2014, Volume and Issue: 74, P. 127 - 137

Published: March 22, 2014

Language: Английский

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Improving phosphorus use efficiency in agriculture: opportunities for breeding

Euphytica, Journal Year: 2015, Volume and Issue: 207(1), P. 1 - 22

Published: Oct. 16, 2015

Abstract Phosphorus (P) is often an important limiting factor for crop yields, but rock phosphate as fertilizer a non-renewable resource and expected to become scarce in the future. High P input levels agriculture have led environmental problems. One of ways tackle these issues simultaneously improving phosphorus use efficiency (PUE) crops through breeding. In this review, we describe plant architectural physiological traits PUE. Subsequently, discuss efficient methods screening PUE traits. We address targeted cultivation methods, including solid hydroponic systems, well testing such image analysis biomass photosynthesis measurements. Genetic variation has been assessed many crops, genetics studied by quantitative trait loci (QTL) analyses genome-wide association study. A number genes involved plant’s response low characterized. These include transcription factors, signal transduction, hormonal pathways, sugar signalling, saving metabolic scavenging, transporters metabolites and/or ATP-ases mobilizing soil. addition, role microorganisms promoting plants, particularly arbuscular mycorrhizal fungi discussed. An overview given selecting optimal combinations fungal genotypes, their genetics, incl. QTLs involved. conclusion, significant progress made PUE, developing systems difficult highly relevant root phenotyping, identifying

Language: Английский

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Identification of primary and secondary metabolites with phosphorus status‐dependent abundance in Arabidopsis, and of the transcription factor PHR1 as a major regulator of metabolic changes during phosphorus limitation

Plant Cell & Environment, Journal Year: 2014, Volume and Issue: 38(1), P. 172 - 187

Published: June 4, 2014

Massive changes in gene expression occur when plants are subjected to phosphorus (P) limitation, but the breadth of metabolic these conditions and their regulation is barely investigated. Nearly 350 primary secondary metabolites were profiled shoots roots P-replete P-deprived Arabidopsis thaliana wild type mutants central P-signalling components PHR1 PHO2, microRNA399 overexpresser. In type, levels 87 metabolites, including phosphorylated not 3-phosphoglycerate, decreased, whereas concentrations most organic acids, amino nitrogenous compounds, polyhydroxy acids sugars increased. Furthermore, 35 glucosinolates, benzoides, phenylpropanoids flavonoids, altered during P limitation. Observed indicated P-saving strategies, increased photorespiration crosstalk between limitation sulphur nitrogen metabolism. The phr1 mutation had a remarkably pronounced effect on P-limitation response, providing evidence that key factor for reprogramming effects pho2 or overexpression comparatively minor. addition, positive correlations transcripts encoding pathway enzymes revealed. This study provides an unprecedented phenotype Arabidopsis.

Language: Английский

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