Using arbuscular mycorrhizal fungi to improve the nutrient quality of crops; nutritional benefits in addition to phosphorus

Hart, Miranda M.; Forsythe, Jennifer

doi:10.1016/j.scienta.2012.09.018

Cited by 80 publications

(47 citation statements)

References 69 publications

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“…That is, greater diversity increases the likelihood of an AM fungus with the appropriate functional attributes and host preference being present in the species mix, in this case F. caledonium. This corresponds with results from Bennett and Bever (2007), Vogelsang et al (2006), Jansa et al (2008) and Hart and Forsythe (2012). Even in the context of agroecosystems, the low level at which diversity saturation occurs with AM fungi in this and other pieces of work is in apparent contradiction to results obtained for other trophic groups and is counter-intuitive to the presence of functional diversity in AM fungi and the maintenance of diverse AM communities in the field.…”

Section: Discussionsupporting

confidence: 87%

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Evidence for functional redundancy in arbuscular mycorrhizal fungi and implications for agroecosystem management

2015

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Arbuscular mycorrhizal (AM) fungi provide benefits to host plants and show functional diversity, with evidence of functional trait conservation at the family level. Diverse communities of AM fungi ought therefore to provide increased benefits to the host, with implications for the management of sustainable agroecosystems. However, this is often not evident in the literature, with diversity saturation at low species number. Growth and nutrient uptake were measured in onions in the glasshouse on AM-free phosphorus (P)-poor soil, inoculated with between one and seven species of AM fungi in all possible combinations. Inoculation with AM fungi increased shoot dry weight as well as P and copper concentrations in shoots but reduced the concentration of potassium and sulphur. There was little evidence of increased benefit from high AM fungal diversity, and increasing diversity beyond three species did not result in significantly higher shoot weight or P or Cu concentrations. Species of Glomeraceae had the greatest impact on growth and nutrient uptake, while species of Acaulospora and Racocetra did not have a significant impact. Failure to show a benefit from high AM fungal diversity in this and other studies may be the result of experimental conditions, with the benefits of AM fungal diversity only becoming apparent when the host plant is faced with multiple stress factors. Replicating the complex interactions between AM fungi, the host plant and their environment in the laboratory in order to fully understand these interactions is a major challenge to AM research.

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Section: Discussionsupporting

confidence: 87%

“…Whether high AM fungal diversity is required in these systems for sustainability is still open to question (Verbruggen and Kiers 2010). Nevertheless, the suggestion that increasing AM fungal diversity in agroecosystems can boost crop growth, nutrient uptake and ultimately sustainability is widespread (Hart and Forsythe 2012).…”

Section: Introductionmentioning

confidence: 99%

Evidence for functional redundancy in arbuscular mycorrhizal fungi and implications for agroecosystem management

2015

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“…Moreover, AMF is believed to mediate selective uptake (Giri and Mukerji, 2004) and enhance transport of nutrients (Al-Karaki, 2000;Sharifi et al, 2007). AMF help plants take in nutrients (George, 2000;Hawkins et al, 2000;Hodge et al, 2001;Neumann and George, 2005;Wu et al, 2011;Hart and Forsythe, 2012). Most plants depend on mycorrhizal fungal symbionts for their nutrient uptake (Lambers et al, 2008).…”

Section: Arbuscular Mycorrhizal Fungi and Mineral Nutritionmentioning

confidence: 99%

Arbuscular Mycorrhiza in Crop Improvement under Environmental Stress

Ahanger¹,

Hashem²,

Abd_Allah³

et al. 2014

Emerging Technologies and Management of Crop Stress Tolerance

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“…The physiological and biochemical mechanisms of mycorrizal infections are not fully understood (Ramos et al, 2011) and, consequently, various plant responses may occur (Hart;Forsythe, 2012), especially if one considers the diversity of chemical, physical, biological and mineralogical soil properties. In addition, the fertilizer application and soil land use affect the mycorrizal inoculation (Qin et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Long-term phosphate fertilization, mycorrhizal inoculation and historical land use influence on soybean growth and P uptake

et al. 2016

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Phosphorus is a key-nutrient in the fertility management of highly weathered tropical soils. So, this work was carried out with the objective of evaluating the influence of the interaction between P doses, mycorrhizal inoculation and historical land use on soybean growth and P uptake in five Latosols (Oxisols) with contrasting chemical, physical and mineralogical properties under a continuous long-term phosphate fertilization (more than 15 years). The plants were cultivated in 4.5L-plastic pots containing 4 kg of soil in a completely randomized design, four replications and 2x2x2 factorial scheme with two P doses; and with or without mycorrhizal inoculation; and soils cultivated for long periods and non-cultivated (under native vegetation). There were two cultivations of ten weeks each. Shoot dry mass, P content and accumulation in the shoot dry mass were evaluated after each cultivation period. The cultivation history reduced the response to P application and inoculation. The soybean response to inoculation was greater in cultivated soils and when the lower P dose was applied. The soybean response magnitude to these variables was different among the studied Latosols. The mineralogical and chemical attributes of the Latosols were determinants.Index terms: Mycorrhiza; Latosols (Oxisols); available P; long-term cultivation. RESUMOO P é um nutriente chave no manejo da fertilidade de solos tropicais altamente intemperizados. Este trabalho foi conduzido com o objetivo de avaliar a influência da interação entre doses de P, inoculação micorrízica e histórico de uso do solo no crescimento da soja e absorção de P em cinco Latossolos com atributos físicos, químicos e mineralógicos contrastantes recebendo adubação fosfatada por longo período (> 15 anos). As plantas foram cultivadas em potes plásticos (4,5 L) contendo 4 kg de solo em um delineamento inteiramente casualizado, quatro repetições e esquema fatorial 2x2x2 correspondente a: duas doses de P; com e sem inoculação micorrízica; solos previamente cultivados e não cultivados (sob vegetação nativa). Foram realizados dois cultivos de dez semanas cada. Após cada um dos cultivos, avaliaram-se a massa seca da parte aérea, concentração e acúmulo de P na parte aérea. O cultivo do solo reduziu a resposta à aplicação de P e inoculação. A resposta da soja à inoculação foi maior nos solos cultivados e quando a menor dose de P foi aplicada. A magnitude dessas respostas foi diferente entre os Latossolos estudados, sendo os atributos mineralógicos e químicos dos Latossolos determinantes.Termos para indexação: Micorrizas; Latossolos; P disponível; cultivo do solo.

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Using arbuscular mycorrhizal fungi to improve the nutrient quality of crops; nutritional benefits in addition to phosphorus

Cited by 80 publications

References 69 publications

Evidence for functional redundancy in arbuscular mycorrhizal fungi and implications for agroecosystem management

Evidence for functional redundancy in arbuscular mycorrhizal fungi and implications for agroecosystem management

Arbuscular Mycorrhiza in Crop Improvement under Environmental Stress

Long-term phosphate fertilization, mycorrhizal inoculation and historical land use influence on soybean growth and P uptake

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