Publication: Arbuscular mycorrhizal fungus influence maize root growth and architecture in rock phosphate amended tropical soil
Authors
Priyadharsini, Perumalsamy ; Muthukumar, Thangavelu
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Publisher
Universidad de Murcia
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DOI
http://dx.doi.org/10.6018/analesbio.39.22
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info:eu-repo/semantics/article
Description
Abstract
Hemos ensayado la influencia del homgo micorrícizo arbuscular
(AM) Scutellospora calospora en la estructura, crecimiento, asimilación
de nutrientes, actividad fosfatasa y dependencia micorrizal
de raíces de maíz por adicción de 0-5% de fosforita (RP) en suelos
deficientes de fósforo (P). La adicción de RP aumentó significativamente
la longitud total de la raíz, el número de raíces a diferentes
niveles y el diámetro de los pelos radiculares de las plantas AM. El
hongo AM influyó positivamente el crecimiento del maíz y la asimilación
de nutrientes. Las actividades fosfatasa ácida y alcalina fueron
mayores en las plantas AM en suelos mejorados. Al aumentar
las concentraciones RP se redujeron no linealmente el porcentaje
de colonización del hongo AM. Entonces, la inoculación de hongos
AM junto a la mejora de fósfoso proveniente de RP podría sustituir
fertilizantes químicos y hacer disponible el P proveniente de RP.
Abstract We evaluated the influence of arbuscular mycorrhizal (AM) fungus Scutellospora calospora on root architecture, growth, nutrient uptake, root phosphatase activity and mycorrhizal dependency of maize in 0-5% rock phosphate (RP) amended phosphorus (P) deficient soil. RP amendment significantly increased total root length, number of roots in different orders, and root hair diameter of AM plants. The AM fungus positively influenced maize growth and nutrient uptake. Acid and alkaline phosphatase activities were higher for AM plants in RP amended soils. In contrast, increasing concentrations of RP reduced the percentage of AM fungus colonization non-linearly. Thus, AM fungus inoculation along with RP amendment could substitute chemical fertilizers and make available the P in RP to the plants.
Abstract We evaluated the influence of arbuscular mycorrhizal (AM) fungus Scutellospora calospora on root architecture, growth, nutrient uptake, root phosphatase activity and mycorrhizal dependency of maize in 0-5% rock phosphate (RP) amended phosphorus (P) deficient soil. RP amendment significantly increased total root length, number of roots in different orders, and root hair diameter of AM plants. The AM fungus positively influenced maize growth and nutrient uptake. Acid and alkaline phosphatase activities were higher for AM plants in RP amended soils. In contrast, increasing concentrations of RP reduced the percentage of AM fungus colonization non-linearly. Thus, AM fungus inoculation along with RP amendment could substitute chemical fertilizers and make available the P in RP to the plants.
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Citation
Anales de Biología, vol 39, 2017
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