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Humic Acids Isolated from Earthworm Compost Enhance Root Elongation, Lateral Root Emergence, and Plasma Membrane H+-ATPase Activity in Maize Roots
Open accessAbstract
Earthworms (Eisenia foetida) produce humic substances that can influence plant growth by mechanisms that are not yet clear. In this work, we investigated the effects of humic acids (HAs) isolated from cattle manure earthworm compost on the earliest stages of lateral root development and on the plasma membrane H+-ATPase activity. These HAs enhance the root growth of maize (Zea mays) seedlings in conjunction with a marked proliferation of sites of lateral root emergence. They also stimulate the plasma membrane H+-ATPase activity, apparently associated with an ability to promote expression of this enzyme. In addition, structural analysis reveals the presence of exchangeable auxin groups in the macrostructure of the earthworm compost HA. These results may shed light on the hormonal activity that has been postulated for these humic substances.
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Cited by
A review of earthworm impact on soil function and ecosystem services
Blouin, M., Hodson, M. E., Delgado, E. A., Baker, G., Brussaard, L., Butt, K. R., Dai, J., Dendooven, L., Peres, G., Tondoh, J. E., et al. (2013) · European Journal of Soil Science · doi:10.1111/ejss.12025 · Cited by 1,307
Humic and fulvic acids as biostimulants in horticulture
Canellas, L. P., Olivares, F. L., Aguiar, N. O., Jones, D. L., Nebbioso, A., Mazzei, P., & Piccolo, A. (2015) · Scientia Horticulturae · doi:10.1016/j.scienta.2015.09.013 · Cited by 1,158
Self-citationRole of organic amendments on enhanced bioremediation of heavy metal (loid) contaminated soils
Park, J. H., Lamb, D., Paneerselvam, P., Choppala, G., Bolan, N., & Chung, J.-W. (2011) · Journal of Hazardous Materials · doi:10.1016/j.jhazmat.2010.09.082 · Cited by 936
Influences of vermicomposts on field strawberries: 1. Effects on growth and yields
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Khaled, H., & Fawy, H. A. (2011) · Soil and Water Research · doi:10.17221/4/2010-swr · Cited by 403
Metadata
- Authors
- Canellas, L. P., Olivares, F. L., Okorokova-Façanha, A. L., & Façanha, A. R.
- Venue
- Plant Physiology
- Publisher
- Oxford University Press (OUP)
- Published
- 2002-12-01
- Volume
- 130
- Issue
- 4
- Pages
- 1951-1957
- ISSN
- 0032-0889 (ISSN-L)
- 1532-2548
- OpenAlex
- W2102725293
- Cited by
- 839
- References
- 0
- FWCI
- 7.77
- Type
- journal article
- Language
- en
- Open access
- bronze
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- CoChat. (2026). Citation check: Humic Acids Isolated from Earthworm Compost Enhance Root Elongation, Lateral Root Emergence, and Plasma Membrane H+-ATPase Activity in Maize Roots. https://app.cochat.ai/papers/10.1104/pp.007088
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- Canellas, L. P., Olivares, F. L., Okorokova-Façanha, A. L., & Façanha, A. R. (2002). Humic Acids Isolated from Earthworm Compost Enhance Root Elongation, Lateral Root Emergence, and Plasma Membrane H+-ATPase Activity in Maize Roots. Plant Physiology. https://doi.org/10.1104/pp.007088
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