Competitive interactions amongst four species of Glomus on maize and onion

Daft, M. J.; Hogarth, Barbara G.

doi:10.1016/s0007-1536(83)80019-9

Cited by 65 publications

(30 citation statements)

References 16 publications

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“…However, in the present study, the isolates G11-CN, G14-CN, and Am-R also exerted strong effects on growth, irrespective of the growth conditions. These results corroborate those found by Daft and Hogarth (1983) and Edathil et al (1996), indicating that the maximum benefits for growth can be achieved using a single and efficient AMF species and that isolate mixtures composed of a high diversity of species do not necessarily translate into increased benefits to plants.…”

supporting

confidence: 87%

“…Thonar et al (2011) observed distinct spatial efficiencies in P uptake by Rhizophagus intraradices, Claroideoglomus claroideum, and Gigaspora margarita, which help to explain the empirical evidence that root colonization by multiple AMF species may be more beneficial to plants than colonization by a single species (Jansa et al 2008). However, there is evidence that most of the benefits to host plants could be achieved using a single species, provided that the species is efficient and adapted (Daft andHogarth 1983, Edathil et al 1996). Therefore, a high taxonomic diversity of AMF species in a particular system would not necessarily result in increased benefits to the host plants.…”

mentioning

confidence: 99%

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Effectiveness of Arbuscular Mycorrhizal Fungal Isolates from the Land Uses of Amazon Region in Symbiosis with Cowpea

Silva

Siqueira

Stürmer

et al. 2018

An. Acad. Bras. Ciênc.

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Arbuscular mycorrhizal fungi provide several ecosystem services, including increase in plant growth and nutrition. The occurrence, richness, and structure of arbuscular mycorrhizal fungi communities are influenced by human activities, which may affect the functional benefits of these components of the soil biota. In this study, 13 arbuscular mycorrhizal fungi isolates originating from soils with different land uses in the Alto Solimões-Amazon region were evaluated regarding their effect on growth, nutrition, and cowpea yield in controlled conditions using two soils. Comparisons with reference isolates and a mixture of isolates were also performed. Fungal isolates exhibited a wide variability associated with colonization, sporulation, production of aboveground biomass, nitrogen and phosphorus uptake, and grain yield, indicating high functional diversity within and among fungal species. A generalized effect of isolates in promoting phosphorus uptake, increase in biomass, and cowpea yield was observed in both soils. The isolates of Glomus were the most efficient and are promising isolates for practical inoculation programs. No relationship was found between the origin of fungal isolate (i.e. land use) and their symbiotic performance in cowpea.

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supporting

confidence: 87%

mentioning

confidence: 99%

Effectiveness of Arbuscular Mycorrhizal Fungal Isolates from the Land Uses of Amazon Region in Symbiosis with Cowpea

Silva

Siqueira

Stürmer

et al. 2018

An. Acad. Bras. Ciênc.

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“…Desta forma, experimentos que envolvam mais do que um isolado fúngico em um único hospedeiro refletirão, provavelmente, melhor os processos que ocorrem naturalmente. Competição interespecífica tem sido medida como uma função de esporulação diferenciada por parte desses fungos (Daft, 1983;Daft & Hogarth, 1983) e pela formação de pontos de entrada em raízes sendo colonizadas (Wilson, 1984). Apesar dessas interações, uma mistura de isolados fúngicos tem demonstrado prover um benefício no crescimento maior do que isolados fúngicos colonizando as raízes sozinhos (Daft, 1983).…”

Section: Introductionunclassified

Efeito de diferentes isolados fúngicos da mesma comunidade micorrízica no crescimento e absorção de fósforo em soja e trevo vermelho

Stürmer

2004

Rev. Bras. Ciênc. Solo

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RESUMOExperimentos que testam a eficiência de fungos micorrízicos arbusculares (FMAs) provenientes de uma mesma amostra de solo complementam os estudos de diversidade taxonômica por promover relações funcionais dentro das comunidades micorrízicas. Neste estudo, isolados fúngicos de três comunidades distintas foram avaliados quanto a sua eficiência em aumentar a produção de biomassa e teor de P em dois hospedeiros micotróficos. No primeiro experimento, avaliou-se o efeito de 13 isolados de FMA pertencentes às comunidades JA205, MN414 e VA105, para testar a hipótese de que pelo menos um isolado de cada comunidade micorrízica seria eficiente para a soja. Todos os três isolados da comunidade JA205 e Glomus clarum da comunidade VA105 aumentaram a produção de biomassa seca em relação às plantas não micorrizadas. Os isolados da comunidade MN414 não influíram na produção de biomassa seca. A concentração de P, no entanto, foi significativamente aumentada por 7 dos 13 isolados em relação às plantas-controle. No segundo experimento, avaliou-se o efeito da inoculação separada e da co-inoculação de isolados das comunidades VA105 e MN414 em trevo. A colonização pelos cinco isolados de ambas as comunidades aumentou significativamente a produção de biomassa seca e conteúdo de P no trevo, com exceção de Scutellospora calospora MN414C que teve efeito apenas no conteúdo de P. A co-inoculação de isolados nem sempre produziu maior benefício do que a inoculação com isolados em separado. Plantas colonizadas com S. verrucosa VA105B + Glomus clarum VA105D produziram quantidade significativamente maior de biomassa do que plantas inoculadas com S. verrucosa apenas, mas não diferiram daquelas inoculadas com G. clarum. No outro extremo, a produção de biomassa seca e conteúdo de P não foram significativamente diferentes em plantas inoculadas com Glomus sp. MN414B +

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“…Our data on spore production were comparable to those obtained by Giovannetti et al (1988) by using Glomus monosporum with Allium cepa and Trifolium pratense as host plants (0.6-3.7 spores/g of soil) and by Moreira et al (2007) by using diverse AM fungi in symbiosis with different host plants (0.2-1.5 spores/g of soil). Differences in AM fungal sporulation have been reported by several authors when different plants were used as hosts, both in laboratory (Daft and Hogarth, 1983;Hetrick and Bloom, 1986;Koomen et al, 1987;Hung and Sylvia, 1988;Bever et al, 1996;Carrenho et al, 2002) and in field conditions (Black and Tinker, 1979;Schenck and Kinloch, 1980;McGraw and Hendrix, 1984;Moreira et al, 2007). Moreover, sporulation was significantly affected by harvest time (Bever et al, 1996), season (Fowler and Antonovics, 1981;Gemma et al, 1989;Bentivenga and Hetrick, 1991;Hetrick et al, 1994), edaphic factors (Gilden and Tinker, 1981;Stahl and Smith, 1984;Louis and Lim, 1988;Boerner, 1990;Stahl et al, 1990;Stahl and Christensen, 1991), and AM fungal geographic origin (Fox and Morrow, 1981;Burdon, 1987).…”

Section: Greenhouse Experimentsmentioning

confidence: 84%

Selection of Infective Arbuscular Mycorrhizal Fungal Isolates for Field Inoculation

Pellegrino¹,

Ramasamy²,

Sbrana³

et al. 2010

Italian Journal of Agronomy

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Arbuscular mycorrhizal (AM) fungi play a key role in host plant growth and health, nutrient and water uptake, plant community diversity and dynamics. AM fungi differ in their symbiotic performance, which is the result of the interaction of two fungal characters, infectivity and efficiency. Infectivity is the ability of a fungal isolate to establish rapidly an extensive mycorrhizal symbiosis and is correlated with pre-symbiotic steps of fungal life cycle, such as spore germination and hyphal growth. Here, different AM fungal isolates were tested with the aim of selecting infective endophytes for field inoculation. Greenhouse and microcosm experiments were performed in order to assess the ability of 12 AM fungal isolates to produce spores, colonize host roots and to perform initial steps of symbiosis establishment, such as spore germination and hyphal growth. AM fungal spore production and root colonization were significantly different among AM fungal isolates. Spore and sporocarp densities ranged from 0.8 to 7.4 and from 0.6 to 2.0 per gram of soil, respectively, whereas root colonization ranged from 2.9 to 72.2%. Percentage of spore or sporocarp germination ranged from 5.8 to 53.3% and hyphal length from 4.7 to 79.8 mm. The ordination analysis (Redundancy Analysis, RDA) showed that AM fungal isolates (used as explanatory variables) explained about 60% of the whole variance and their effect on fungal infectivity variables was significant (P = 0.002). The biplot clearly showed that variables which might be used to detect infective AM fungal isolates were hyphal length and root colonization. Such analysis may allow the detection of the best parameters to select efficient AM fungal isolates to be used in agriculture.

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Competitive interactions amongst four species of Glomus on maize and onion

Cited by 65 publications

References 16 publications

Effectiveness of Arbuscular Mycorrhizal Fungal Isolates from the Land Uses of Amazon Region in Symbiosis with Cowpea

Effectiveness of Arbuscular Mycorrhizal Fungal Isolates from the Land Uses of Amazon Region in Symbiosis with Cowpea

Efeito de diferentes isolados fúngicos da mesma comunidade micorrízica no crescimento e absorção de fósforo em soja e trevo vermelho

Selection of Infective Arbuscular Mycorrhizal Fungal Isolates for Field Inoculation

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