Arbuscular Mycorrhizal symbiosis in four Al-tolerant wheat genotypes grown in an acidic Andisol

Arbuscular mycorrhizal (AM) fungi play an important role in protecting host plant against phytotoxic aluminum (Al) in soil. The aim of this work was to analyze the effect of AM fungi native from acid soil on the growth of four Al-tolerant wheat (Triticum aestivum L.) genotypes. A greenhouse experime...

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Autores principales:	Seguel,A, Castillo,C.G, Morales,A, Campos,P, Cornejo,P, Borie,F
Lenguaje:	English
Publicado:	Chilean Society of Soil Science / Sociedad Chilena de la Ciencia del Suelo 2016
Materias:	Wheat Arbuscular mycorrhizal fungi Al-tolerance Acidic soil
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162016000100013
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spelling	oai:scielo:S0718-951620160001000132016-05-05Arbuscular Mycorrhizal symbiosis in four Al-tolerant wheat genotypes grown in an acidic AndisolSeguel,ACastillo,C.GMorales,ACampos,PCornejo,PBorie,F Wheat Arbuscular mycorrhizal fungi Al-tolerance Acidic soil Arbuscular mycorrhizal (AM) fungi play an important role in protecting host plant against phytotoxic aluminum (Al) in soil. The aim of this work was to analyze the effect of AM fungi native from acid soil on the growth of four Al-tolerant wheat (Triticum aestivum L.) genotypes. A greenhouse experiment was conducted using three near isogenic Chilean wheat genotypes (‘Crac’, ‘Invento’ and ‘Otto’) and one of recognized Al-tolerance (‘Atlas 66’) which were grown in an acid Andisol with 34% Al-saturation. The plant dry biomass and root colonization were determined at six early growth stages and AM spore density, glomalin (as GRSP) and acid phosphatase (P-ase) activity were analyzed at two stages; i) 11 days after sowing -DAS-, and at 60 DAS. Results showed that in all genotypes AM root colonization was not inhibited in spite of high soil Al saturation in the soil and a significant root colonization degree was observed at the first phenological stage mainly in the native wheat genotypes. Also, ‘Crac’ and ‘Invento’ genotypes showed the highest densities of AM spores and GRSP production. All wheat cultivars increased the P-ase activity overtime. Root biomass correlated positive and significantly with root colonization (r=0.71; P<0.001) and inversely with AM spores (r=-0.61; P<0.001). ‘Atlas 66’ showed a high adaptability to grow in acid conditions but produced the lesser amounts of AM propagules, which suggest that this genotype would show Al-tolerance mechanisms not fully associated to AM symbiosis as the Chilean wheat cultivars do. In conclusion, the higher early root colonization, AM spores and GRSP production associated to native wheat genotypes could indicate that AM symbiosis play a principal role in the Al tolerance capacity of T. aestivum developed in those soils with high Al levels and fungal native populations adapted to this conditions.info:eu-repo/semantics/openAccessChilean Society of Soil Science / Sociedad Chilena de la Ciencia del SueloJournal of soil science and plant nutrition v.16 n.1 20162016-03-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162016000100013en10.4067/S0718-95162016005000013
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Wheat Arbuscular mycorrhizal fungi Al-tolerance Acidic soil
spellingShingle	Wheat Arbuscular mycorrhizal fungi Al-tolerance Acidic soil Seguel,A Castillo,C.G Morales,A Campos,P Cornejo,P Borie,F Arbuscular Mycorrhizal symbiosis in four Al-tolerant wheat genotypes grown in an acidic Andisol
description	Arbuscular mycorrhizal (AM) fungi play an important role in protecting host plant against phytotoxic aluminum (Al) in soil. The aim of this work was to analyze the effect of AM fungi native from acid soil on the growth of four Al-tolerant wheat (Triticum aestivum L.) genotypes. A greenhouse experiment was conducted using three near isogenic Chilean wheat genotypes (‘Crac’, ‘Invento’ and ‘Otto’) and one of recognized Al-tolerance (‘Atlas 66’) which were grown in an acid Andisol with 34% Al-saturation. The plant dry biomass and root colonization were determined at six early growth stages and AM spore density, glomalin (as GRSP) and acid phosphatase (P-ase) activity were analyzed at two stages; i) 11 days after sowing -DAS-, and at 60 DAS. Results showed that in all genotypes AM root colonization was not inhibited in spite of high soil Al saturation in the soil and a significant root colonization degree was observed at the first phenological stage mainly in the native wheat genotypes. Also, ‘Crac’ and ‘Invento’ genotypes showed the highest densities of AM spores and GRSP production. All wheat cultivars increased the P-ase activity overtime. Root biomass correlated positive and significantly with root colonization (r=0.71; P<0.001) and inversely with AM spores (r=-0.61; P<0.001). ‘Atlas 66’ showed a high adaptability to grow in acid conditions but produced the lesser amounts of AM propagules, which suggest that this genotype would show Al-tolerance mechanisms not fully associated to AM symbiosis as the Chilean wheat cultivars do. In conclusion, the higher early root colonization, AM spores and GRSP production associated to native wheat genotypes could indicate that AM symbiosis play a principal role in the Al tolerance capacity of T. aestivum developed in those soils with high Al levels and fungal native populations adapted to this conditions.
author	Seguel,A Castillo,C.G Morales,A Campos,P Cornejo,P Borie,F
author_facet	Seguel,A Castillo,C.G Morales,A Campos,P Cornejo,P Borie,F
author_sort	Seguel,A
title	Arbuscular Mycorrhizal symbiosis in four Al-tolerant wheat genotypes grown in an acidic Andisol
title_short	Arbuscular Mycorrhizal symbiosis in four Al-tolerant wheat genotypes grown in an acidic Andisol
title_full	Arbuscular Mycorrhizal symbiosis in four Al-tolerant wheat genotypes grown in an acidic Andisol
title_fullStr	Arbuscular Mycorrhizal symbiosis in four Al-tolerant wheat genotypes grown in an acidic Andisol
title_full_unstemmed	Arbuscular Mycorrhizal symbiosis in four Al-tolerant wheat genotypes grown in an acidic Andisol
title_sort	arbuscular mycorrhizal symbiosis in four al-tolerant wheat genotypes grown in an acidic andisol
publisher	Chilean Society of Soil Science / Sociedad Chilena de la Ciencia del Suelo
publishDate	2016
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162016000100013
work_keys_str_mv	AT seguela arbuscularmycorrhizalsymbiosisinfouraltolerantwheatgenotypesgrowninanacidicandisol AT castillocg arbuscularmycorrhizalsymbiosisinfouraltolerantwheatgenotypesgrowninanacidicandisol AT moralesa arbuscularmycorrhizalsymbiosisinfouraltolerantwheatgenotypesgrowninanacidicandisol AT camposp arbuscularmycorrhizalsymbiosisinfouraltolerantwheatgenotypesgrowninanacidicandisol AT cornejop arbuscularmycorrhizalsymbiosisinfouraltolerantwheatgenotypesgrowninanacidicandisol AT borief arbuscularmycorrhizalsymbiosisinfouraltolerantwheatgenotypesgrowninanacidicandisol
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Arbuscular Mycorrhizal symbiosis in four Al-tolerant wheat genotypes grown in an acidic Andisol

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