Secreted acid phosphatase is expressed in cluster roots of lupin in response to phosphorus deficiency

Wasaki, Jun; Yamamura, Takuya; Shinano, Takuro; Osaki, Mitsuru

doi:10.1007/978-94-010-0243-1_10

Cited by 117 publications

(18 citation statements)

References 33 publications

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“…Organic anion exudation into the rhizosphere increases the mobilization of sparingly soluble soil P Gerke et al 1994;Li et al 1997), whereas phosphatase secretion by white lupin helps it to use organic P fractions in addition to inorganic P in soil (Adams and Pate 1992;Lambers et al 1998). Enhanced ability of white lupin to secrete acid phosphatase under P-deficient conditions has also been described by Tadano and Sakai (1991) and by Wasaki et al (2003).…”

Section: Introductionmentioning

confidence: 84%

“…For organic P to be available for plants, it must be hydrolyzed by phosphatase (Richardson et al 2001). Cluster root formation can further enhance the P uptake of white lupin attributable to the secretion of extracellular acid phosphatases (Adams and Pate 1992;Neumann et al , 2000Ozawa et al 1995;Wasaki et al 2003). In our study, we infer that lower concentration of NaOH-Po in lupin rhizosphere compared to unplanted control might have occurred by acid phosphatase secretion, as demonstrated by George et al (2006), who found a positive correlation between activity of acid phosphatase and reduction of NaOH-Po in the rhizosphere of Tithonia and transgenic clover.…”

Section: P Fractions In the Rhizospherementioning

confidence: 99%

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Interspecific facilitation of P acquisition in intercropping of maize with white lupin in two contrasting soils as influenced by different rates and forms of P supply

et al. 2015

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Aims This study of a maize-white lupin model cropping system was conducted to investigate the effects of rhizosphere-sharing of white lupin, a P-efficient plant, on growth and P accumulation of maize under different P rates and forms in two contrasting soils. Methods With Regosol and Andosol, a 42-day pot experiment was conducted for 0P (no P addition), 50Pi, 100Pi (50 and 100 mg P kg −1 soil by NaHPO 4 ⋅2H 2 O respectively), and 100Po (100 mg P kg −1 soil by phytate). Plant growth, P uptake, rhizosphere pH, and different P fractions were investigated. Results Complementary effects of intercropping for maize were observed in Regosol, but not in Andosol. Total P uptake by intercropped maize in 0P, 50Pi, and 100Po was elevated by 46, 37, and 65 %, respectively, compared to when it was grown as a monoculture. White lupin mobilized P from sparingly soluble forms. Thereby, maize plant enhanced its P accumulation as a result of access to these two fractions in mixed culture in Regosol, where strong root intermingling occurred among intercropped plants.Conclusions Results suggest that the P mobilization strategy of white lupin from sparingly soluble P pools in soil can enhance the P acquisition efficiency of coexisting maize with P facilitation in this intercropping occurring in the direction of white lupin to maize. Achieving enhanced growth and P uptake by Pinefficient species in intercropping with white lupin is dependent on the type of soil in which those plants are grown.

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Section: Introductionmentioning

confidence: 84%

Section: P Fractions In the Rhizospherementioning

confidence: 99%

Interspecific facilitation of P acquisition in intercropping of maize with white lupin in two contrasting soils as influenced by different rates and forms of P supply

et al. 2015

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“…Secretion of phosphatases and low-molecular-weight carboxylates increases in plants under low-P conditions, and consequently phosphate uptake of the plants increases (Veneklaas et al 2003). Remarkable differences in the levels of acid phosphatase (APase) secretion from roots under P-deficient conditions have been observed in lupin (Tadano et al 1993;Wasaki et al 2003), maize (Yun and Kaeppler 2001) and maize and chickpea (Li et al 2004b). Furthermore, intracellular APase secretion in wheat (McLachlan et al 1987) and maize (Elliot and Lä uchli 1986) plants has also been demonstrated.…”

Section: Introductionmentioning

confidence: 88%

Mineral nutrition of wheat, chickpea and lentil as affected by mixed cropping and soil moisture

Güneş

İnal

Adak

et al. 2007

Nutr Cycl Agroecosyst

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Interspecific complementary and competitive interactions on yield and N, P, K, Fe, Zn and Mn nutrition of mixed wheat/chickpea and wheat/lentil grown in a glasshouse under normal and drought conditions, and intercropping of wheat/chickpea in the field under rainfed conditions were investigated. The results of the experiments confirmed that drought significantly decreased the growth and mineral nutrition of all plant species. Individual plant dry weights of wheat, chickpea and lentil in the glasshouse experiment, and vegetative shoot dry weight of intercropped wheat in the field experiment were significantly increased by the associated plant species as compared with their monoculture. Even though there were increases in vegetative shoot dry weight of wheat, biological and seed yield of intercropped wheat and chickpea were decreased due to the lower row number in intercropping. However, the calculated LER (Land Equivalent Ratio) was found to be higher than 1.0 for biological and seed yields, showing that intercropping of wheat and chickpea has an advantage over monoculture. In many cases, the drought · cropping system interaction on the nutrient concentrations of plant species was not significant. Results of the glasshouse study showed that P nutrition of wheat was improved by chickpea and lentil, which might result from increases in leaf acid phosphatase in mixed cropping. The release of Fe(III)-complexing compounds from the roots was higher in the sole wheat and mixed culture than that of monocultured chickpea and lentil. This improves Fe nutrition of wheat and chickpea, but those improvements were not significant. However, Zn and Mn concentrations of mixed cropped chickpea were also increased. Under the field conditions, shoot concentration of P, K, Fe, Zn and Mn in wheat were increased by intercropping. Furthermore, the concentrations of Zn and Mn in chickpea were increased by intercropping while N, P and K concentrations were decreased. In addition, the concentrations of N, P, K and Fe for wheat seeds and of Zn and Mn for chickpea were improved by intercropping. It is concluded that interspecific interaction was complementary and generally facilitated the mineral nutrition of wheat and chickpea species grown in mixed culture. Besides giving a yield advantage, intercropping of chickpea and wheat also had a positive effect on seed mineral composition.

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“…In many soils including the one used here, organically bound P constitutes a major fraction of the soil P (Otani and Ae 1996). Plants may gain access to this organic phosphorus pool by excretion of phosphatases (Miller et al, 2001;Wasaki et al, 2003a) or phytases (Richardson et al, 2001). The acid phosphatase excretion was investigated for Nipponbare and NIL-Pup1 without detecting significant differences between them (Table 5).…”

Section: Possible Causes For Higher External P Uptake Efficiencymentioning

confidence: 99%

“…A second important mechanism by which plants increase P uptake are rhizosphere processes capable of mobilizing soilbound P through soil-P desorption or mineralization. The release of H + or OH ) (Gahoonia et al, 1992;Saleque and Kirk, 1995) of organic acids (Ae et al, 1990;Kirk et al, 1999a), or phosphatases and phytases (Richardson et al, 2001;Wasaki et al, 2003a) into the rhizosphere are mechanisms that increase the pool of P available for plant uptake. Otani and Ae (1996) compared the ability of different crop species to take up P from a highly P deficient soil.…”

Section: Introductionmentioning

confidence: 97%

Combining a modelling with a genetic approach in establishing associations between genetic and physiological effects in relation to phosphorus uptake

Wissuwa

2005

Plant Soil

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The Pup1 locus confers tolerance to phosphorus (P) deficiency in rice (Oryza sativa L.). Transferring the Pup1 locus to an intolerant genotype increased P uptake by a factor 3 to 4. Lines with the Pup1 locus maintained higher root growth rates under P deficiency, but only as they started to diverge from intolerant lines in P uptake. It was thus not possible to determine if differences in root growth preceded and caused differences in P uptake or whether high root growth was the result of higher external P uptake efficiency (P influx per root size). The purpose of this paper is to review experimental evidence on the effect of Pup1 in light of recent results in modelling cause-and-effect relations between root growth, external efficiency and P uptake. Model simulations suggested that only very small changes in factors enhancing root growth were needed to explain the effect of Pup1 on P uptake. A 22% increase in root fineness or in internal P utilization efficiency (root dry matter per root P) was sufficient to triple P uptake . External root efficiency had to increase by 33% to account for the effect of Pup1. However, the most noticeable effect of increases in external efficiency was a subsequent stimulation of root growth that contributed eight times more to final P uptake compared to the change in external efficiency. Comparisons of model simulations with empirical data suggested that measured differences in external efficiency between Nipponbare and NIL-Pup1 were sufficiently large to account for the increase in P uptake. A segregation analysis using several pairs of contrasting NILs (at the Pup1 locus) further confirmed this as Pup1 co-segregated with external efficiency but not with seedling root growth or internal efficiency.

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Secreted acid phosphatase is expressed in cluster roots of lupin in response to phosphorus deficiency

Cited by 117 publications

References 33 publications

Interspecific facilitation of P acquisition in intercropping of maize with white lupin in two contrasting soils as influenced by different rates and forms of P supply

Interspecific facilitation of P acquisition in intercropping of maize with white lupin in two contrasting soils as influenced by different rates and forms of P supply

Mineral nutrition of wheat, chickpea and lentil as affected by mixed cropping and soil moisture

Combining a modelling with a genetic approach in establishing associations between genetic and physiological effects in relation to phosphorus uptake

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