The community structure of arbuscular mycorrhizal fungi in roots of maize grown in a 50-year monoculture

Sasvári, Zita; Hornok, L.; Posta, Katalin

doi:10.1007/s00374-010-0519-z

Cited by 41 publications

(22 citation statements)

References 41 publications

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“…In both cases the PCA and the hierarchical clustering did not highlighted a correlation between treatments and the related AMF assemblages (data not shown). The lack of correlation could be related to the findings of several studies where, beside niche-based mechanisms [7] [25], was emphasized the importance of stochastic-neutral processes involved in the shaping of AMF communities [26] [27].…”

Section: Resultsmentioning

confidence: 99%

“…Chemical fertilization and, above all, high phosphorus levels do not favor a wide AMF community because these conditions can suppress root colonization and thus growth of AMF [6]. Furthermore also other agricultural practices like mechanical disturbance and pesticide application can affect the occurrence of AMF, impacting soil biological activity [7] [8]. Most of AMF community analyses have been exclusively focused on roots, without considering that the extra-radical phase is at least as important as the intraradical mycelia for the nutrient supply of the host plant [9].…”

Section: Introductionmentioning

confidence: 99%

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From Monoculture to Norfolk System: How the Number of Crops in Rotation Can Influence the Biodiversity of Arbuscular Mycorrhiza Assemblages in the Soil

Magurno¹,

Sasvári²,

Barchi³

et al. 2014

OJE

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Given the attention drawn since several decades by arbuscular mycorrhizal fungi (AMF) as potential biological alternatives to chemicals in a low-input agriculture, much effort has been spent in the investigation of mechanisms influencing the dynamics inside AMF communities. In the present study we evaluated the influence of different crop rotations on the AMF soil community, after a 50 y long-term field experiment established at Martonvásár, Hungary. Four types of crop rotation were chosen for sampling: corn monocropping, corn-alfalfa, corn-wheat, and corn-spring barleypeas-wheat. Community composition of AMF in soil was analyzed with a molecular approach amplifying a portion of 28S rDNA. The crop rotation practice didn't show an influence on identity of the species composing AMF assemblages, but on the other hand seemed to affect positively the true diversity, defined as number of MOTUs present in the communities.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

From Monoculture to Norfolk System: How the Number of Crops in Rotation Can Influence the Biodiversity of Arbuscular Mycorrhiza Assemblages in the Soil

Magurno¹,

Sasvári²,

Barchi³

et al. 2014

OJE

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“…La diversidad taxonómica es una medida de las especies de HMA presentes en el suelo, la cual puede ser afectada por las prácticas agrícolas así como por el cultivo de especies no micotróficas y el establecimiento de monocultivos, sin embargo la pérdida o disminución de la diversidad taxonómica tiene también un importante impacto sobre la diversidad funcional de los HMA (Sasvári et al 2011).…”

Section: Discussionunclassified

Diversidad de hongos micorrícicos arbusculares en maíz con cultivo de cobertura y biofertilizantes en Chiapas, México

Pérez-Luna

Álvarez-Solís²,

Mendoza‐Vega

et al. 2012

Gayana Bot.

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“…La diversidad taxonómica es una medida de las especies de HFMA presentes en el suelo, la cual puede verse influenciada por las prác-ticas agrícolas, el cultivo de especies no micotróficas y el establecimiento de monocultivos; la pérdida o disminución de la diversidad taxonómica, por su parte, tiene un importante impacto sobre la diversidad funcional de los HFMA (Sasvári et al, 2011).…”

Section: Morfotipos E íNdice De Biodiversidad De Los Hfma Encontradosunclassified

Influencia de las coberturas en cultivos de cítricos sobre los hongos formadores de micorrizas arbusculares en Oxisoles del piedemonte llanero colombiano

L.¹,

Cano³

et al. 2013

CTA

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RESUMENSe identificaron morfológicamente hongos formadores de micorrizas arbusculares nativos asociados a coberturas de gramíneas y leguminosas, establecidas en suelos Oxisoles del piedemonte llanero (Meta, Colombia) y se evaluó su capacidad de colonización. El área experimental se estableció en las calles de un cultivo de naranja Valencia donde se sembraron especies de Arachis pintoi (CIAT 18744), Brachiaria brizantha cv. Toledo, B. dictyoneura cv. Llanero, Desmodium ovalifolium cv. Maquenque, Panicum maximum (CIAT 36000), Paspalum notatum, un testigo químico (glifosato) y un testigo mecánico con guadaña. Se utilizó un diseño de bloques completos al azar con ocho tratamientos y tres repeticiones, que se evaluaron en la época húmeda y en la seca. Se tomaron muestras de suelo rizosférico y raíces de las gramíneas y leguminosas para identificar morfológicamente hongos formadores de micorrizas arbusculares y cuantificar el número de esporas y el porcentaje de colonización. Se identificaron 26 morfotipos de dichos hongos, incluyendo Scutellospora heterogama, Acaulospora scrobiculata y A. morrowiae que representaron 65% de la población presente en las dos épocas. La colonización radical osciló entre 47% y 94% con un contenido de esporas entre 63 y 300/100 g de suelo seco. Las coberturas con mayor porcentaje de colonización y diversidad de hongos formadores de micorrizas arbusculares fueron B. brizantha, B. dictyoneura y P. notatum; el control mecánico y los tratamientos con glifosato presentaron una influencia negativa sobre el contenido de esporas y colonización radical de dichos hongos.Palabras claves: biodiversidad, cítricos, morfotipos, suelo ácido, trópico bajo. ABSTRACTNative arbuscular mycorrhizal fungi associated with grass and legume cover crops established on Oxisol soils in the Colombian piedmont (Meta) were identified morphologically and the ability to colonize was evaluated. The experimental area consisted of cover crops Arachis pintoi (CIAT 18744), Brachiaria brizantha cv. Toledo, B. dictyoneura cv. Llanero, Desmodium ovalifolium cv. Maquenque, Panicum maximum (CIAT 36000), Paspalum notatum, and a chemical control (Glyphosate and mechanical control) established in the rows in a Valencia orange grove. The experiment followed a complete randomized block design (8 cover crops) and three replications, evaluated during the wet and dry seasons. Rhizosphere soil and grass and legumes roots were sampled in order to identified AMF and quantify the number of spores and the percentage of colonization. A total of 26 species were identified, including Acaulospora scrobiculata, A. morrowiae and, Scutellospora heterogama, which accounted for over 65% of the population. The percentage of root colonization ranged between 47% and 94% with spore counts between 63 and 300/100 g of dry soil. Cover crops with the highest colonization percentage and AMF diversity were B. brizantha, B. dictyoneura and P. notatum in their respective order. Glyphosate and mechanical control had a negative influence on the sporulation and coloniz...

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The community structure of arbuscular mycorrhizal fungi in roots of maize grown in a 50-year monoculture

Cited by 41 publications

References 41 publications

From Monoculture to Norfolk System: How the Number of Crops in Rotation Can Influence the Biodiversity of Arbuscular Mycorrhiza Assemblages in the Soil

From Monoculture to Norfolk System: How the Number of Crops in Rotation Can Influence the Biodiversity of Arbuscular Mycorrhiza Assemblages in the Soil

Diversidad de hongos micorrícicos arbusculares en maíz con cultivo de cobertura y biofertilizantes en Chiapas, México

Influencia de las coberturas en cultivos de cítricos sobre los hongos formadores de micorrizas arbusculares en Oxisoles del piedemonte llanero colombiano

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