Colombo, R.P.; Ibarra, J.G.; Bidondo, L.F.; Silvani, V.A.; Bompadre, M.J.; Pergola, M.; López, N.I.; Godeas, A.M."Arbuscular mycorrhizal fungal association in genetically modified drought-tolerant corn" (2017) Journal of Environmental Quality. 46(1):227-231
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The commercial use of genetically modified (GM) plants has significantly increased worldwide. The interactions between GM plants and arbuscular mycorrhizal (AM) fungi are of considerable importance given the agricultural and ecological role of AM and the lack of knowledge regarding potential effects of droughttolerant GM corn (Zea mays L.) on AM fungal symbiosis. This work studied AM fungal colonization in five corn lines growing under two different irrigation regimes (30 and 100% of soil field capacity [SFC]). Four of the lines were GM corn, and two of these were drought tolerant. The experiment was conducted for 60 d in a growth chamber under constant irrigation, after which mycorrhization, corn biomass, and days to plant senescence (DTS) were evaluated. Arbuscular mycorrhizal fungal species of the order Diversisporales were predominant in the soil inocula. At the end of the experiment, all plants showed AM colonization. Mycorrhization was higher at 30% SFC than at 100% SFC. Within the same corn line, the AM fungi produced more vesicles in plant roots under drought stress. Among treatments, DTS varied significantly, and droughttolerant GM corn lines survived longer than the wild-type corn when maintained at 100% SFC. Corn biomass did not vary among treatments, and no correlations were found between DTS or biomass and mycorrhization. We conclude that overexpression of the Hahb-4 gene in corn plants under the experimental conditions of this study did not affect AM fungal infectivity and improved the tolerance of the corn to drought stress. © American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America. 5585 Guilford Rd., Madison, WI 53711 USA. All rights reserved.


Documento: Artículo
Título:Arbuscular mycorrhizal fungal association in genetically modified drought-tolerant corn
Autor:Colombo, R.P.; Ibarra, J.G.; Bidondo, L.F.; Silvani, V.A.; Bompadre, M.J.; Pergola, M.; López, N.I.; Godeas, A.M.
Filiación:Dep. de Biodiversidad y Biología Experimental, FCEN, Univ. de Buenos Aires, IBBEA-CONICET, Argentina
Dep. de Química Biológica, FCEN, Univ. de Buenos Aires, IQUIBICEN-CONICET, Argentina
Dep. de Ciencia y Tecnología, Univ. Nacional de Quilmes, Argentina
Palabras clave:Biomass; Drought; Ecology; Fungi; Irrigation; Arbuscular mycorrhizal; Arbuscular mycorrhizal fungi; Corn (Zea mays L.); Experimental conditions; Fungal colonization; Genetically modified; Irrigation regimes; Potential effects; Genetically modified plants; ethylene; transcription factor; Article; biomass; Diversisporales; drought stress; drought tolerance; environmental stress; fungal colonization; fungus; maize; nonhuman; phenotype; plant root; senescence; soil inoculation; symbiosis; transgenic plant; drought; genetics; maize; mycorrhiza; Biomass; Droughts; Mycorrhizae; Plant Roots; Plants, Genetically Modified; Symbiosis; Zea mays
Página de inicio:227
Página de fin:231
Título revista:Journal of Environmental Quality
Título revista abreviado:J. Environ. Qual.
CAS:ethylene, 74-85-1


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---------- APA ----------
Colombo, R.P., Ibarra, J.G., Bidondo, L.F., Silvani, V.A., Bompadre, M.J., Pergola, M., López, N.I.,..., Godeas, A.M. (2017) . Arbuscular mycorrhizal fungal association in genetically modified drought-tolerant corn. Journal of Environmental Quality, 46(1), 227-231.
---------- CHICAGO ----------
Colombo, R.P., Ibarra, J.G., Bidondo, L.F., Silvani, V.A., Bompadre, M.J., Pergola, M., et al. "Arbuscular mycorrhizal fungal association in genetically modified drought-tolerant corn" . Journal of Environmental Quality 46, no. 1 (2017) : 227-231.
---------- MLA ----------
Colombo, R.P., Ibarra, J.G., Bidondo, L.F., Silvani, V.A., Bompadre, M.J., Pergola, M., et al. "Arbuscular mycorrhizal fungal association in genetically modified drought-tolerant corn" . Journal of Environmental Quality, vol. 46, no. 1, 2017, pp. 227-231.
---------- VANCOUVER ----------
Colombo, R.P., Ibarra, J.G., Bidondo, L.F., Silvani, V.A., Bompadre, M.J., Pergola, M., et al. Arbuscular mycorrhizal fungal association in genetically modified drought-tolerant corn. J. Environ. Qual. 2017;46(1):227-231.