Occurrence and effect of arbuscular mycorrhizal propagules in wheat as affected by the source and amount of phosphorus fertilizer and fungal inoculation

Rubio, Rosa; Borie, Fernando; Schalchli, Carlos; Castillo, Claudia; Azcón‐Aguilar, Concepción

doi:10.1016/s0929-1393(03)00045-3

Cited by 64 publications

(37 citation statements)

References 51 publications

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“…This result shows that both NO3 -as N source and the tillage systems that disturb less the soil can promote the density of an important biotic component in view of maintaining a long-term presence of AMF propagules. This spore density increase is related to pH increase, situation already observed in previous studies under similar conditions (Rubio et al, 2003;Cornejo et al, 2007;2008b). In this study, differences in spore density were also found in intermediate growth stages (Z60) which differs from the observed by Cornejo et al (2007), where these differences, with contrasting N sources, were found in wheat postharvest.…”

Section: Soil Alteration (A) N Source (N) a X N Experimental Variablesupporting

confidence: 86%

“…Several studies have demonstrated that the functionality of mycorrhizal symbiosis in agrosystems is affected by practices such as the previous crop in the rotation, type of fertilizer used, and tillage system, influencing persistence and density of AMF propagules remaining in the soil (Borie and Rubio, 1999;Rubio et al, 2003;Borie et al, 2006;Cornejo et al, 2007;2008b). However, among the most relevant aspects to be taken into account in acidic soils is the emphasis on the type of N fertilizer used, because the nitrate (NO3 -) and ammonium (NH4 + ) ions have a considerable effect on the variations of rhizospheric pH, owing these ions are the most abundant, most absorbed, and most accumulated by the plant (Gerendás et al, 1997;Cornejo et al, 2008a).…”

Section: Introductionmentioning

confidence: 99%

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Mycorrhizal Propagule Persistence in a Succession of Cereals in a Disturbed and Undisturbed Andisol Fertilized with Two Nitrogen Sources

Cornejo

Rubio

Borie

2009

Chilean J. Agric. Res.

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Arbuscular mycorrhizal fungi (AMF) form symbiosis with plant roots, improving its establishment, nutrition, and tolerance to adverse soil conditions. In annual crop rotations, some aspects such as the type of N fertilizer and tillage system used can affect the AMF propagule density and its functionality in the following crop. To analyze the effect of the agronomic practices previously mentioned on the persistence and density of AMF propagules, a study in a succession of cereals was carried out. For this, soil previously cropped with wheat (Triticum aestivum L.) and fertilized with urea (NH4 + ) or sodium nitrate (NO3 -) was disturbed in each case by simulating conventional tillage (CT) or maintained without disturbing, simulating no-tillage (NT). It was then cultivated with oat (Avena sativa L.) using the same N sources. Higher densities of AMF active mycelium and colonized root length in the NT soil were observed (76 and 497% higher than in CT soil, respectively, P < 0.001). Moreover, NT + NO3 -interaction produced a higher density of AMF spores (75% higher than in the rest of the treatments, P < 0.05), although showing a decrease in comparison with the previous wheat crop. These results suggest that N source and tillage system interact to influence persistence and density of AMF propagules, an important aspect to consider in acidic soils intended for annual crops.

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Section: Soil Alteration (A) N Source (N) a X N Experimental Variablesupporting

confidence: 86%

Section: Introductionmentioning

confidence: 99%

Mycorrhizal Propagule Persistence in a Succession of Cereals in a Disturbed and Undisturbed Andisol Fertilized with Two Nitrogen Sources

Cornejo

Rubio

Borie

2009

Chilean J. Agric. Res.

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“…Las esporas de HMA se extrajeron desde el suelo mediante la técnica de tamizado húmedo con posterior decantación a través de tamices (425 µm-53 µm) y centrifugación en gradiente de sacarosa para ser cuantificadas en placas de Doncaster bajo una lupa estereoscópica (Sieverding 1991). La longitud de micelio extrarradical se determinó por el método del intercepto de líneas de acuerdo a metodología propuesta por Rubio et al (2003) para suelos derivados de cenizas volcánicas, previa extracción desde el suelo con glicerina ácida y posterior filtración a través de un sistema de filtración micropore utilizado como medio de tinción. En el caso del micelio total, se utilizó el colorante azul de tripán y para el micelio activo, una solución que contenía iodonitrotretazolium, la que tiñe de rojo las partes activas del hongo.…”

Section: Métodosunclassified

Niveles de glomalina y su relación con características químicas y biológicas del suelo (andisol) en un relicto de bosque nativo del sur de Chile

et al. 2008

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Glomalina en bosque nativo BOSQUE 29(1): [11][12][13][14][15][16][17][18][19][20][21][22] 2008 ARTÍCULOS Niveles de glomalina y su relación con características químicas y biológicas del suelo (andisol) en un relicto de bosque nativo del sur de Chile SUMMARYIn forest ecosystems the arbuscular mycorrhizal fungi (AMF) play an important role in the carbon accumulation by a glicoprotein production named glomalin that participate in the soil aggregate stability. Therefore, the aim of this study was to quantify the glomalin content of an andisol of southern Chile under adult and mixed forest and to determine the relationships with fungal and soil chemical characteristics. The study was at two slopes and exposition (NE and SW). The forest vegetation was principally dominated by species that develop ectomycorrhiza, but the underforest species, shrubs and climbers, developed arbuscular mycorrhiza with high glomalin production capacity and with amounts higher than those determined in agroecosystems for the same area. Glomalin concentration in the upper horizon ranged between 44.2 and 46.1 mg g -1 representing between 8.9 and 10.4 % of the total soil carbon, decreasing their content as depth increased. The slope and exposition type influenced glomalin content both, total and easily extractable. Therefore, NE with smooth slope presented the major content of total glomalin, while SW with sharp slope showed high levels of easily extractable glomalin. Total glomalin showed close relationships with the spores AMF (r = 0.84, P < 0.001) and with soil organic matter (r = 0.83, P < 0.001). Data obtained in this study suggest that it is necessary to preserve the forest ecosystems for keeping up the mycorrhizal potential and reinforce the statement that glomalin can be an important carbon sink contributing to soil carbon retention.Key words: arbuscular mycorrhizal fungi, glomalin, carbon storage, andisol. RESUMENEn ecosistemas forestales, los hongos micorrícico-arbusculares (HMA) juegan un rol importante en la acumulación de carbono debido a la producción de una glicoproteína denominada glomalina que participa en la estabilidad de los agregados de suelo. Por lo tanto, el objetivo del estudio fue cuantificar el contenido de glomalina en un andisol del sur de Chile bajo bosque mixto adulto y estudiar las relaciones con características fúngicas y químicas del suelo, bajo dos pendientes y exposiciones (NE y SO). La vegetación forestal estuvo dominada principalmente por especies que forman ectomicorrizas, pero especies acompañantes, arbustos y trepadoras presentaron micorrizas arbusculares capaces de producir altos niveles de glomalina, superiores a los de agroecosistemas de la misma área. La concentración de glomalina en el suelo superior (0-10 cm) fluctuó entre 44,2 y 46,1 mg g -1 , representando entre 8,9 y 10,4% del carbono total del suelo, disminuyendo sus contenidos a mayor profundidad. Así, NE con inclinación suave presentó mayor contenido de glomalina total, mientras que SO, con pendiente abrupta, tuvo elevados niveles de gloma...

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“…Soil samples were crushed and passed through a 2-mm sieve. Then hyphal length was measured by the filtration-grid-line method [27]. Patterns of in situ catabolic potential (ISCP) were designed to determine the functions of soil microbial communities and the microbial functional diversity in soil treatments after one and two growing seasons [28].…”

Section: Soil Microbial Analysismentioning

confidence: 99%

Field Application of the Mycorrhizal Fungus <i>Rhizophagus irregularis</i> Increases the Yield of Wheat Crop and Affects Soil Microbial Functionalities

Wahbi¹,

Prin²,

Maghraoui³

et al. 2015

AJPS

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The aim of this study was to test the impact of Rhizophagus irregularis, an arbuscular mycorrhizal fungus (AMF), on durum wheat growth and soil microbial functionalities in a field inoculation trial conducted in Morocco. The results showed that i) the R. irregularis inoculum effectively improved wheat growth, ii) wheat growth promotion depended on the soil mycorrhizal infectivity and iii) functional abilities of soil microflora depended on AMF inoculation. This study confirms that field AMF inoculation can be proposed as an effective agronomic practice in wheat production and as a sustainable cultural practice to manage soil biofunctioning. To fully promote inoculation practices, a better knowledge of AMF ecology has to be acquired to better adapt AMF inoculation to environmental conditions, and thus warrant better yields and agricultural sustainability.

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Occurrence and effect of arbuscular mycorrhizal propagules in wheat as affected by the source and amount of phosphorus fertilizer and fungal inoculation

Cited by 64 publications

References 51 publications

Mycorrhizal Propagule Persistence in a Succession of Cereals in a Disturbed and Undisturbed Andisol Fertilized with Two Nitrogen Sources

Mycorrhizal Propagule Persistence in a Succession of Cereals in a Disturbed and Undisturbed Andisol Fertilized with Two Nitrogen Sources

Niveles de glomalina y su relación con características químicas y biológicas del suelo (andisol) en un relicto de bosque nativo del sur de Chile

Field Application of the Mycorrhizal Fungus <i>Rhizophagus irregularis</i> Increases the Yield of Wheat Crop and Affects Soil Microbial Functionalities

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Occurrence and effect of arbuscular mycorrhizal propagules in wheat as affected by the source and amount of phosphorus fertilizer and fungal inoculation

Cited by 64 publications

References 51 publications

Mycorrhizal Propagule Persistence in a Succession of Cereals in a Disturbed and Undisturbed Andisol Fertilized with Two Nitrogen Sources

Mycorrhizal Propagule Persistence in a Succession of Cereals in a Disturbed and Undisturbed Andisol Fertilized with Two Nitrogen Sources

Niveles de glomalina y su relación con características químicas y biológicas del suelo (andisol) en un relicto de bosque nativo del sur de Chile

Field Application of the Mycorrhizal Fungus &lt;i&gt;Rhizophagus irregularis&lt;/i&gt; Increases the Yield of Wheat Crop and Affects Soil Microbial Functionalities

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Field Application of the Mycorrhizal Fungus <i>Rhizophagus irregularis</i> Increases the Yield of Wheat Crop and Affects Soil Microbial Functionalities