Influence of mycorrhizal fungi on phytoremediating potential and yield of sunflower in Cd and Pb polluted soils

Adewole, M. B.; Awotoye, Olusegun Olufemi; Ohiembor, M.O.; Salami, Ayobami T.

doi:10.2298/jas1001017a

Cited by 8 publications

(10 citation statements)

References 13 publications

(12 reference statements)

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“…Previous studies of Shaheen et al (2007), andEl-Shaikh andMohammed (2009) showed an increase in agronomic growth performance and yield of okra when bio-inoculants were applied to soil. The roots of plant that developed well and had enhanced access to soil nutrients when soils are treated with arbuscular mycorrhiza (Adewole et al, 2010) could be attributable to increased okra yield.…”

Section: Yield Of Okramentioning

confidence: 99%

“…Arbuscular mycorrhizal fungi (AMF) can be integrated into soil management to achieve low-cost sustainable agricultural systems (Hooker and Black, 1995). AMF improve plant-water relations and thus increase the drought resistance of host plants (Nelsen, 1987), improve disease control (Khan, 2006) and increase mineral uptake and yield of crop (Adewole et al, 2010), hence, reduce the use of fertilizers. Mycorrhiza is undoubtedly of extraordinary importance in plant production, plant and soil ecology and plays a key role in sustainable agriculture (Bethlenfalvay et al, 1998).…”

Section: Introductionmentioning

confidence: 99%

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Effects of different soil amendments on the growth and yield of okra in a tropical rainforest of southwestern Nigeria

Adewole

Ilesanmi

2012

J AGR SCI BELGRADE

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This study investigated the effects of different soil enhancers on the growth response of okra [Abelmoschus esculentus (L.) Moench] cultivated on a ‘contaminated’ field with sewage sludge from the two oxidation ponds of the Obafemi Awolowo University (OAU), Ile-Ife, Nigeria. This was with a view to assessing the growth performance and yield of the test crop under different soil amendments. Okra variety, NHAe 47-4 with NPK 12-12-17 (IO), compost organic fertilizer (OR), Glomus mosseae mycorrhiza (MY) and zero fertilizer applications as control (CT) was laid out in a completely randomised block design and each treatment plot (4 x 2 m) was replicated four times. Selected weather parameters were collected from a meteorological station in OAU campus during the period of the experiments. Growth parameters such as plant height, stem girth and number of leaves of okra increased with added soil amendments from four weeks after planting in the order: IO > OR > MY > CT. In 2010, the highest mean yield of 16.3 t ha-1 obtained with 6.0 t ha-1 of MY was not significantly higher than 15.4 t ha-1 obtained with application of 0.2 t ha-1 of IO, but significantly (p < 0.05) higher than 13.1 and 10.4 t ha-1 obtained with applications of 6.0 and zero t ha-1 of OR and CT respectively. Comparative okra yield, though relatively higher with mycorrhizal inoculation, but lower with no soil amendment was obtained in 2011. The study concluded that a direct linear relationship existed between solar radiation and okra productivity. Also, for a moderately ‘treated field’ with sewage sludge from domestic wastes, arbuscular mycorrhizal fungi can be integrated into soil fertility management to achieve low-cost sustainable agricultural systems for enhanced productivity of okra

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Section: Yield Of Okramentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effects of different soil amendments on the growth and yield of okra in a tropical rainforest of southwestern Nigeria

Adewole

Ilesanmi

2012

J AGR SCI BELGRADE

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“…Accumulation of contaminants can also occur through fungal structures such as arbuscules, vesicles and vacuoles, minimizing toxicity in the plant itself [191]. Finally, since AMF leads to enhanced plant nutrition and water availability resulting in an increase in plant yield, AMF may indirectly dilute the effects of heavy metals by promoting plant growth [208,215].…”

Section: Remediation Of Heavy-metal Contaminated Soilsmentioning

confidence: 99%

“…A recent review found that AMF could be used as a biomanagement tool in order to reduce phosphate fertilizer application by up to 80% [95,96]. Yield has been known to increase when there is a plant-AMF association in stressed environments, such as nutrient deficiency [95], salinity stress [123] and heavy metal pollution [215]. The successful use of plants in soil restoration depends on mycorrhizal associations [200], and it has been demonstrated that a 'phytomicrobial' approach to soil restoration is an economically viable option [96].…”

Section: Management Implicationsmentioning

confidence: 99%

Arbuscular mycorrhizal associations in plant nutrition and health.

Rintoul¹

2016

CABI Reviews

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Plants and arbuscular mycorrhizal fungi have co-evolved over a period of at least 450 million years. This fungal-plant association involves the transfer of carbon to the obligate biotropic fungus, in return for a wide range of beneficial functions. Although this is usually a mutualistic relationship, it can become parasitic to the plant under adverse conditions. Here, the research examining mechanisms by which mycorrhizal associations improve plant fitness is reviewed. Although there is strong evidence that a number of beneficial functions are performed by mycorrhizae, the mechanisms behind these are often not clear. There are numerous factors which influence these mechanisms and their outcomes, one or more of which can be affecting the association simultaneously. The knowledge we have on arbusular mycorrhizal associations with plants could be applied to various land management practices in order to improve soil degradation brought about by anthropogenic activities. These include erosion, drought, nutrient stress and salinization, and are often a result of poor land management. In order to use mycorrhizal fungi as a biomanagement tool, more research is required, particularly in mature field communities over long timescales. There is a need to invest in the development of sustainable agroecological management methods and to design future policy and legislation that encourages large organizations to incorporate more sustainable practices whilst protecting small-scale farmers.

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“…Particularly high levels of elements found in synthetic fertilisers like sodium and potassium have been reported to lead to soil and water pollution and loss of biodiversity in soils [1]. One of the most essential macronutrients for plant growth is phosphorous.…”

Section: Introductionmentioning

confidence: 99%

Enhancement of Colonisation of Soybean Roots by Arbuscular Mycorrhizal Fungi Using Vermicompost and Biochar

Wathira¹

2016

AFF

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Pollution and contamination of soil is one of the major concerns in the world today. Excessive use of synthetic fertilisers has caused tremendous harm to the environment and the human population indirectly. Chemical residues accumulated in crops that find their way to into the human food chain have been found to have adverse health effects. Enrichment of lakes with runoff from heavily-fertilised farms has resulted in eutrophication and pollution of water bodies. Application of organic matter and use of mycorrhiza have been recommended as ways of mitigating these problems. The aim of the study was to investigate the effect of organic amendments on colonisation of soybean roots by arbuscular mycorrhizal fungi. The study consisted of a field experiment of seven treatments with 3 replications in a complete randomized block design. The treatments were biochar (B), vermicompost (V), mycorrhiza (M), biochar and vermicompost (BV), biochar and mycorrhiza (BM), biochar, vermicompost and mycorrhiza (BVM), mycorrhiza and vermicompost (MV), and the control block which had no amendments (NT). Before planting of soybeans and application of amendments, soil samples were collected for characterization of soil chemical properties and mycorrhizal spores. Soybean seeds were planted in each plot. At flowering time, roots were screened for percentage mycorrhizal colonisation and dry mass of plants from each plot was taken. At harvest time, soil samples, plants and harvested soybeans from each plot were collected and dry weight taken. There was mean increase of 53.38% in levels of phosphorous and 15.33% of carbon in the soil after application of amendments. Levels of nitrogen decreased in all treatment blocks. There was a significant (P<0.0000) increase in arbuscular mycorrhizal fungi spores after application of treatments. The colonization percentage of arbuscules in roots was highest (14.7%) in the bio char and vermicomposting blocks (BV) while the blocks without any treatment, NT, had the lowest colonization percentage of 1.2%. The highest dry weight of both shoots and roots were recorded in blocks treated with biochar which also had the highest weight of harvested soy bean seeds with a mean of 171.28g. Blocks treated with mycorrhiza had the lowest harvest weight of soybean seeds with a mean of 58.17g. From this study it was concluded that the organic amendments enhanced the activity of the already-present mycorrhizal fungi in the soil, without requiring the introduction of commercial mycorrhizal amendments and biochar enhances microbial activity which stimulates crop productivity.

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Influence of mycorrhizal fungi on phytoremediating potential and yield of sunflower in Cd and Pb polluted soils

Cited by 8 publications

References 13 publications

Effects of different soil amendments on the growth and yield of okra in a tropical rainforest of southwestern Nigeria

Effects of different soil amendments on the growth and yield of okra in a tropical rainforest of southwestern Nigeria

Arbuscular mycorrhizal associations in plant nutrition and health.

Enhancement of Colonisation of Soybean Roots by Arbuscular Mycorrhizal Fungi Using Vermicompost and Biochar

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