Arbuscular mycorrhiza and kinetic parameters of phosphorus absorption by bean plants

Silveira, Adriana Parada Dias da; Cardoso, Elke Jurandy Bran Nogueira

doi:10.1590/s0103-90162004000200013

Cited by 27 publications

(17 citation statements)

References 15 publications

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“…The kinetic parameters vary, especially with genotype and species (ALI et al, 2010;BRIX et al, 2010;LIMA et al, 2005;McFARLANE;YANAI, 2006;PINTO, 2009;SCHONINGER;GATIBONI;ERNANI, 2013;SILVEIRA;CARDOSO, 2004), as they determine the characteristics of the plant itself, and provide it with a higher or lower nutrient uptake capacity at a given concentration in the external medium. A genotype or species is considered efficient in the uptake of a particular nutrient when it presents kinetic parameters that qualify it as such.…”

Section: Kinetic Parameters Of P K Ca and Mg Uptakementioning

confidence: 99%

Root Morphology and Nutrient Uptake Kinetics by Australian Cedar Clones

et al. 2016

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-Evaluation of root morphology and kinetic parameters assist in the characterization of genotypes in nutrient uptake efficiency. This study characterized Australian cedar clones concerning their nutrient uptake capacity at the seedling stage through root morphology and the kinetics of P, K, Ca, and Mg uptake. The experiment was conducted using a nutrient solution in a greenhouse and growth chamber. Four Australian cedar clones (HE, XF, XD, and XE), provided by Bela Forest View (Empresa Florestal Bela Vista), were tested using a completely randomized design with five repetitions, totaling 20 experimental plots. The length, volume, surface area, average diameter, and root length per diameter class, as well as the uptake parameters V max , K m , C min , and the estimated inflow of P, K, Ca, and Mg, were determined. The root morphological characteristics varied between Australian cedar clones; clone XD exhibited the largest root system development. The uptake efficiency of P, K, Ca, and Mg varied between cedar Australian clones. When availability differed, clones XE and XF exhibited greater plasticity in the uptake of P and K respectively, and similar results were found for clone HE in the uptake of Ca and Mg.Keywords: Morphological attributes of root systems. Kinetic parameters. Inflow of P, K, Ca, and Mg. Nutrient uptake. Toona ciliata. MORFOLOGIA RADICULAR E CINÉTICA DE ABSORÇÃO DE NUTRIENTES POR CLONES DECEDRO-AUSTRALIANO RESUMO -Avaliações da morfologia radicular e de parâmetros cinéticos auxiliam na caracterização de genótipos quanto à eficiência de absorção de nutrientes. O objetivo deste trabalho foi caracterizar clones de cedro-australiano quanto à capacidade de absorção de nutrientes na fase de muda, por meio da determinação de características morfológicas radiculares e dos parâmetros cinéticos de absorção de P, K, Ca e Mg. O experimento foi conduzido em solução nutritiva em casa de vegetação e câmara de crescimento. Foram testados quatro clones de cedro-australiano (HE, XF, XD e XE), provenientes da empresa Bela Vista Florestal, sendo utilizado o delineamento inteiramente casualizado com cinco repetições, totalizando em vinte parcelas experimentais. Determinou-se o comprimento, volume, área superficial, diâmetro médio e extensão de raízes por classes de diâmetro, bem como os parâmetros de absorção Vmax, Km, Cmin e o influxo estimado para P, K, Ca e Mg. As características morfológicas radiculares variam entre os clones de cedro-australiano, tendo destaque para o clone XD que apresentou um maior desenvolvimento do sistema radicular. A eficiência de absorção de P, K, Ca e Mg varia entre os clones de cedro-australiano. Em condições de variações na disponibilidade, os clones XF e XE apresentam maior plasticidade na absorção de P e K, respectivamente, e o clone HE na absorção de Ca e Mg. Palavras-chave:Atributos morfológicos do sistema radicular. Parâmetros cinéticos. Influxos de P, K, Ca e Mg.Absorção de nutrientes. Toona ciliata.

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Section: Kinetic Parameters Of P K Ca and Mg Uptakementioning

confidence: 99%

Root Morphology and Nutrient Uptake Kinetics by Australian Cedar Clones

et al. 2016

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“…The low plant diversity of the studied region is possibly associated with temperature conditions, which influenced the frequency and occurrence of AMFs in the studied region (Newsham et al 2009, Silveira andCardoso 2004). Another important factor verified in the areas of this study was the presence of soil mesofauna species, especially mites and nematodes.…”

Section: Resultsmentioning

confidence: 63%

“…The functional compatibility between the mycorrhizal symbiosis and the phosphorus level in the soil solution controls the kinetic parameters of the absorption and influx of P to the plants, and may favor or not the establishment of symbiosis (Silveira 1990, Silveira andCardoso 2004). The phosphorus can inhibit or completely limit the formation of symbiosis, causing different responses of AMF in the growth of host plants (Parniske 2008, Smith and.…”

Section: Resultsmentioning

confidence: 99%

Occurrence of arbuscular mycorrhizal fungi on King George Island, South Shetland Islands, Antarctica

Barbosa

Pereira

Cury

2017

An. Acad. Bras. Ciênc.

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Arbuscular mycorrhizal fungi make up an important ecological niche in ecosystems, and knowledge of their diversity in extreme environments is still incipient. The objective of this work was to evaluate the density and diversity of arbuscular mycorrhizal fungi in the soil of King George Island in the South Shetland Islands archipelago, Antarctica. For that, soil and roots of Deschampsia antarctica were collected at the brazilian research station in Antarctica. The spore density, species diversity and mycorrhizal colonization in the roots were evaluated. There was a low density of spores (27.4 ± 17.7) and root mycorrhizal colonization (6 ± 5.1%), which did not present statistical difference. Four species of arbuscular mycorrhizal fungi were identified, distributed in two genera: three species of the genus Glomus (Glomus sp1, Glomus sp2 and Glomus sp3) and one of the genus Acaulospora, which was identified at species level (Acaulospora mellea). Greater soil diversity was verified with pH 5.9 and phosphorus concentration of 111 mg dm -3 , occurring two species of genus Glomus and A. mellea. Based on literature data, this may be the first record of this species of Acaulospora mellea in Antarctic soils, colonizing D. antarctica plants.

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“…As reported earlier, a number of soil microorganisms have mineral phosphate solubilizing activity (Sudara Rao and Sinha 1963;Banik and Dey 1982;Yahya and Al-Azawi 1989;Silveira and Cardoso 2004;Khan, Zaidi, and Wani 2007). This activity is greater in the rhizosphere.…”

Section: Introductionmentioning

confidence: 57%

Changes of Inorganic Active P Forms in Two Calcareous Soils and Maize Growth in Pot Culture in Sterile and Unsterile Conditions

Sinegani

Jalilvand

2013

Communications in Soil Science and Plant Analysis

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Plants and microorganisms can change phosphorus (P) forms and its availability in soil significantly. Two soils with different calcium carbonate and P forms were sampled and the experiment used a completely randomized design considered as factorial. The factors were soil (Sulan and Bahar), sterilization (sterile and unsterile soils), and maize planting (unplanted and planted soil with Zea mays). Plants were grown in greenhouse condition and harvested at flowering. Shoot and root dry weights and the ratio of root/shoot biomass were greater in Bahar soil especially in unsterile conditions than in Sulan soil. After plant harvest the effect of soil sterilization on soluble P was significant and it was greater in sterile soil compared to that in unsterile soil. The effect of maize planting on available P, dicalcium phosphate P (DCP-P), and octcalcium phosphate P (OCP-P) was significant. They were greater in unplanted soil, especially in unsterile conditions. Although the greatest apatite P was measured in unplanted soil in sterile conditions, this form of soil P did not change significantly.

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Arbuscular mycorrhiza and kinetic parameters of phosphorus absorption by bean plants

Cited by 27 publications

References 15 publications

Root Morphology and Nutrient Uptake Kinetics by Australian Cedar Clones

Root Morphology and Nutrient Uptake Kinetics by Australian Cedar Clones

Occurrence of arbuscular mycorrhizal fungi on King George Island, South Shetland Islands, Antarctica

Changes of Inorganic Active P Forms in Two Calcareous Soils and Maize Growth in Pot Culture in Sterile and Unsterile Conditions

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