Arbuscular mycorrhizal fungal association in genetically modified drought-tolerant corn

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...

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Autores principales:	Silvani, Vanesa Analía, Bompadre, María Josefina, Pérgola, Mariana, Godeas, Alicia Margarita
Publicado:	2017
Materias:	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 mycorrhiza Droughts Mycorrhizae Plant Roots Plants, Genetically Modified Symbiosis Zea mays
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00472425_v46_n1_p227_Colombo http://hdl.handle.net/20.500.12110/paper_00472425_v46_n1_p227_Colombo
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

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spelling	paper:paper_00472425_v46_n1_p227_Colombo2023-06-08T15:05:33Z Arbuscular mycorrhizal fungal association in genetically modified drought-tolerant corn Silvani, Vanesa Analía Bompadre, María Josefina Pérgola, Mariana Godeas, Alicia Margarita 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 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. Fil:Silvani, V.A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Bompadre, M.J. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Pergola, M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Godeas, A.M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2017 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00472425_v46_n1_p227_Colombo http://hdl.handle.net/20.500.12110/paper_00472425_v46_n1_p227_Colombo
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	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
spellingShingle	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 Silvani, Vanesa Analía Bompadre, María Josefina Pérgola, Mariana Godeas, Alicia Margarita Arbuscular mycorrhizal fungal association in genetically modified drought-tolerant corn
topic_facet	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
description	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.
author	Silvani, Vanesa Analía Bompadre, María Josefina Pérgola, Mariana Godeas, Alicia Margarita
author_facet	Silvani, Vanesa Analía Bompadre, María Josefina Pérgola, Mariana Godeas, Alicia Margarita
author_sort	Silvani, Vanesa Analía
title	Arbuscular mycorrhizal fungal association in genetically modified drought-tolerant corn
title_short	Arbuscular mycorrhizal fungal association in genetically modified drought-tolerant corn
title_full	Arbuscular mycorrhizal fungal association in genetically modified drought-tolerant corn
title_fullStr	Arbuscular mycorrhizal fungal association in genetically modified drought-tolerant corn
title_full_unstemmed	Arbuscular mycorrhizal fungal association in genetically modified drought-tolerant corn
title_sort	arbuscular mycorrhizal fungal association in genetically modified drought-tolerant corn
publishDate	2017
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00472425_v46_n1_p227_Colombo http://hdl.handle.net/20.500.12110/paper_00472425_v46_n1_p227_Colombo
work_keys_str_mv	AT silvanivanesaanalia arbuscularmycorrhizalfungalassociationingeneticallymodifieddroughttolerantcorn AT bompadremariajosefina arbuscularmycorrhizalfungalassociationingeneticallymodifieddroughttolerantcorn AT pergolamariana arbuscularmycorrhizalfungalassociationingeneticallymodifieddroughttolerantcorn AT godeasaliciamargarita arbuscularmycorrhizalfungalassociationingeneticallymodifieddroughttolerantcorn
_version_	1768543172026171392

Arbuscular mycorrhizal fungal association in genetically modified drought-tolerant corn

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