Effects of epigeic earthworm (Eisenia fetida) and arbuscular mycorrhizal fungus (Glomus intraradices) on enzyme activities of a sterilized soil–sand mixture and nutrient uptake by maize

Li, Huan; Xiang, Dan; Wang, Chong; Li, Xin; Lou, Yi

doi:10.1007/s00374-012-0679-0

Cited by 51 publications

(22 citation statements)

References 60 publications

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“…The final inoculation intensity for mesocosms assigned to the inoculated treatment was 200 spores per 1 L of growth medium. For the mockinoculated treatment, the same amount of the liquid inoculant was filtered through Whatman filter papers #1 and #42 (Li et al, 2012), mixed with 1.5 kg of sterilized sand, and added to the growth medium in mock-inoculated mesocosms to introduce inoculum factors other than VAM fungi.…”

Section: Mycorrhizal Studymentioning

confidence: 99%

Reduction in Root Secondary Growth as a Strategy for Phosphorus Acquisition

2017

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We tested the hypothesis that reduced root secondary growth of dicotyledonous species improves phosphorus acquisition. Functional-structural modeling in SimRoot indicates that, in common bean (Phaseolus vulgaris), reduced root secondary growth reduces root metabolic costs, increases root length, improves phosphorus capture, and increases shoot biomass in lowphosphorus soil. Observations from the field and greenhouse confirm that, under phosphorus stress, resource allocation is shifted from secondary to primary root growth, genetic variation exists for this response, and reduced secondary growth improves phosphorus capture from low-phosphorus soil. Under low phosphorus in greenhouse mesocosms, genotypes with reduced secondary growth had 39% smaller root cross-sectional area, 60% less root respiration, 27% greater root length, 78% greater shoot phosphorus content, and 68% greater shoot mass than genotypes with advanced secondary growth. In the field under low phosphorus, these genotypes had 43% smaller root cross-sectional area, 32% greater root length, 58% greater shoot phosphorus content, and 80% greater shoot mass than genotypes with advanced secondary growth. Secondary growth eliminated arbuscular mycorrhizal associations as cortical tissue was destroyed. These results support the hypothesis that reduced root secondary growth is an adaptive response to low phosphorus availability and merits investigation as a potential breeding target.

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Section: Mycorrhizal Studymentioning

confidence: 99%

Reduction in Root Secondary Growth as a Strategy for Phosphorus Acquisition

2017

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“…The maize seeds were Nong Da 108, which were pre-treated as described by Li et al (2012b). After the seeds were incubated at 25 C for 24 h, two germinating seeds were planted in each plot.…”

Section: Earthworm Mycorrhiza and Experimental Setupmentioning

confidence: 99%

“…There was a 1-mm mesh with a 3-cm diameter hole in the centre on the pot top to allow for maize growth and to retain inoculated earthworms. In the AM and AM + E treatments, the live mycorrhiza inoculum was placed approximately 2 cm under the soil surface at 60 g kg À1 (Li et al, 2012b).…”

Section: Earthworm Mycorrhiza and Experimental Setupmentioning

confidence: 99%

Rhizosphere interactions between earthworms (Eisenia fetida) and arbuscular mycorrhizal fungus (Funneliformis mosseae) promote utilization efficiency of phytate phosphorus in maize

Cao

Huang

Wang

2015

Applied Soil Ecology

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“…The earthworm Eisenia fetida, a model organism for ecotoxicological studies, was chosen in this study based on the potential that E. fetida prefer to consume organic matter in soil and form aggregates, which strongly affects organic matter transformation and soil development (Li et al 2012). Earthworms (E. fetida) were purchased from a local earthworm breeding farm (Guangzhou, China).…”

Section: Earthwormsmentioning

confidence: 99%

Distribution and fractionation of cadmium in soil aggregates affected by earthworms (Eisenia fetida) and manure compost

Feng

et al. 2016

J Soils Sediments

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Purpose The objectives of this study were (1) to investigate the effects of manure compost and earthworms on Cd mobility in Cd-contaminated soil, (2) to test whether the bioturbation of earthworms reduces the immobilization effect of the manure compost when they are combined, and (3) to explore the distribution of Cd in aggregates formed by earthworms with corresponding fractionation analysis. Materials and methods A laboratory experiment was conducted to evaluate the effect of either or both application of manure compost and the earthworms Eisenia fetida into cadmium historically contaminated soil on cadmium mobility. Soil characteristics and metal concentrations in earthworms and soil were measured, and soil aggregates in the mesocosms were separated for Cd fraction analysis based on four steps sequential extraction. Results and discussion Manure compost reduced mobile Cd based on CaCl 2 extraction and Toxicity Characteristic Leaching Procedure (TCLP) test by 60-95 and 25-30 %, respectively. However, earthworm application alone increased Cd mobility by 9-15 %. Besides, in the presence of manure compost, earthworms further immobilized cadmium to a slight extent. The interaction effect of manure compost and earthworms combined on Cd immobilization suggested that earthworms promoted the formation of large macroaggregates (>2 mm) and the redistribution of Cd concentration in soil aggregates. Additionally, earthworms reduced carbonate fraction of Cd from 42.3-49.6 to 6.3-19.5 % in different aggregates, respectively. And, residual fraction of Cd increased from 33.9-42.2 to 63.9-77.5 % simultaneously. The results may be due to the thorough mixture of phosphates and organic matter with cadmium during bioturbation on account of the available form of phosphorus, nitrogen, and cadmium changing to the more recalcitrant form.Conclusions Manure compost addition increased the soil pH, phosphorus, nitrogen, and organic carbon content, and decreased Cd mobility. The application of earthworms and manure compost combined exhibited higher efficiency for cadmium immobilization, which can be used for Cd remediation due to the redistribution of Cd concentration in soil aggregates and the transformation of soluble Cd to the residual precipitate fraction.

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Effects of epigeic earthworm (Eisenia fetida) and arbuscular mycorrhizal fungus (Glomus intraradices) on enzyme activities of a sterilized soil–sand mixture and nutrient uptake by maize

Cited by 51 publications

References 60 publications

Reduction in Root Secondary Growth as a Strategy for Phosphorus Acquisition

Reduction in Root Secondary Growth as a Strategy for Phosphorus Acquisition

Rhizosphere interactions between earthworms (Eisenia fetida) and arbuscular mycorrhizal fungus (Funneliformis mosseae) promote utilization efficiency of phytate phosphorus in maize

Distribution and fractionation of cadmium in soil aggregates affected by earthworms (Eisenia fetida) and manure compost

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