The Experts below are selected from a list of 321 Experts worldwide ranked by ideXlab platform
Yoichi Torigoe - One of the best experts on this subject based on the ideXlab platform.
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Molecular diversity and distribution of indigenous arbuscular mycorrhizal communities colonizing roots of two different winter cover crops in response to their root proliferation
Journal of Microbiology, 2016Co-Authors: Masao Higo, Yusuke Miyazawa, Yukiya Matsuda, Katsunori Isobe, Rhae A. Drijber, Yoichi TorigoeAbstract:A clear understanding of how crop root proliferation affects the distribution of the spore abundance of arbuscular mycorrhizal fungi (AMF) and the composition of AMF communities in agricultural fields is imperative to identify the potential roles of AMF in winter cover crop rotational systems. Toward this goal, we conducted a field trial using wheat ( Triticum aestivum L.) or red clover ( Trifolium pratense L.) grown during the winter season. We conducted a molecular analysis to compare the diversity and distribution of AMF communities in roots and spore abundance in soil cropped with wheat and red clover. The AMF spore abundance, AMF root colonization, and abundance of root length were investigated at three different distances from winter crops (0 cm, 7.5 cm, and 15 cm), and differences in these variables were found between the two crops. The distribution of specific AMF communities and variables responded to the two winter cover crops. The majority of Glomerales phylotypes were common to the roots of both winter cover crops, but Gigaspora phylotypes in Gigasporales were found only in red clover roots. These results also demonstrated that the diversity of the AMF colonizing the roots did not significantly change with the three distances from the crop within each rotation but was strongly influenced by the host crop identity. The distribution of specific AMF phylotypes responded to the presence of wheat and red clover roots, indicating that the host crop identity was much more important than the proliferation of crop roots in determining the diversity of the AMF communities.
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Temporal variation of the molecular diversity of arbuscular mycorrhizal communities in three different winter cover crop rotational systems
Biology and Fertility of Soils, 2015Co-Authors: Masao Higo, Katsunori Isobe, Rhae A. Drijber, Takuya Kondo, Moe Yamaguchi, Saki Takeyama, Yoichi TorigoeAbstract:A clear understanding of the significance of arbuscular mycorrhizal fungi (AMF) to phosphorus (P) nutrition in intensively managed cover crop rotational systems with soybean [ Glycine max (L.) Merr.] will impact how we currently manage these systems, particularly crop rotation decisions. We investigated the impact of wheat ( Triticum aestivum L.), rapeseed ( Brassica napus L.), or fallow on composition of AMF communities in soil over 2 years of a consecutive soybean rotational system. The composition of AMF communities was characterized on the basis of the large subunit (LSU) ribosomal DNA (rDNA). AMF spore abundance in soil after cultivation of wheat was higher than that after rapeseed or fallow for the all sampling years. Phylogenetic analysis identified 19 AMF phylotypes, including five Glomus ; three Gigaspora ; two of Acaulospora , Funneliformis , and Rhizophagus ; one of Racocetra , Claroideoglomus , Diversispora , and Sclerocystis ; and an unknown glomeromycete in soil. Dominant phylotypes of Glomerales occurred widely across the winter cover crop rotations. However, the phylotype richness and diversity of AMF communities were unchanged among crop rotations and years. Redundancy analysis (RDA) demonstrated that AMF communities within a crop rotation were not significantly different. However, when analyzed over a 2-year period, the composition of AMF communities was clearly influenced by year where the distribution of specific AMF phylotypes responded to the winter cover crop management. Thus, diversity of AMF communities in soil was clearly shifted by rotation year, which indicated that other abiotic environmental factors may impact composition AMF communities more than winter cover crop rotational systems.
Elodie Drula - One of the best experts on this subject based on the ideXlab platform.
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Comparative genomics of Rhizophagus irregularis, R. cerebriforme, R. diaphanus and Gigaspora rosea highlights specific genetic features in Glomeromycotina.
The New phytologist, 2019Co-Authors: Emmanuelle Morin, Denis Beaudet, Shingo Miyauchi, Hélène San Clemente, Eric C. H. Chen, Adrian Pelin, Ivan De La Providencia, Steve Ndikumana, Mathieu Hainaut, Elodie DrulaAbstract:Glomeromycotina is a lineage of early diverging fungi that establish arbuscular mycorrhizal (AM) symbiosis with land plants. Despite their major ecological role, the genetic basis of their obligate mutualism remains largely unknown, hindering our understanding of their evolution and biology. We compared the genomes of Glomerales (Rhizophagus irregularis, Rhizophagus diaphanus, Rhizophagus cerebriforme) and Diversisporales (Gigaspora rosea) species, together with those of saprotrophic Mucoromycota, to identify gene families and processes associated with these lineages and to understand the molecular underpinning of their symbiotic lifestyle. Genomic features in Glomeromycotina appear to be very similar with a very high content in transposons and protein-coding genes, extensive duplications of protein kinase genes, and loss of genes coding for lignocellulose degradation, thiamin biosynthesis and cytosolic fatty acid synthase. Most symbiosis-related genes in R. irregularis and G. rosea are specific to Glomeromycotina. We also confirmed that the present species have a homokaryotic genome organisation. The high interspecific diversity of Glomeromycotina gene repertoires, affecting all known protein domains, as well as symbiosis-related orphan genes, may explain the known adaptation of Glomeromycotina to a wide range of environmental settings. Our findings contribute to an increasingly detailed portrait of genomic features defining the biology of AM fungi.
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Comparative genomics of Rhizophagus irregularis, R. cerebriforme, R. diaphanus and Gigaspora rosea highlights specific genetic features in Glomeromycotina
New Phytologist, 2019Co-Authors: Emmanuelle Morin, Denis Beaudet, Shingo Miyauchi, Hélène San Clemente, Eric C. H. Chen, Adrian Pelin, Ivan De La Providencia, Steve Ndikumana, Mathieu Hainaut, Elodie DrulaAbstract:Glomeromycotina is a lineage of early diverging fungi that establish arbuscular mycorrhizal (AM) symbiosis with land plants. Despite their major ecological role, the genetic basis of their obligate mutualism remains largely unknown, hindering our understanding of their evolution and biology. We compared the genomes of Glomerales (Rhizophagus irregularis, Rhizophagus diaphanus, Rhizophagus cerebriforme) and Diversisporales (Gigaspora rosea) species, together with those of saprotrophic Mucoromycota, to identify gene families and processes associated with these lineages and to understand the molecular underpinning of their symbiotic lifestyle. Genomic features in Glomeromycotina appear to be very similar with a very high content in transposons and protein-coding genes, extensive duplications of protein kinase genes, and loss of genes coding for lignocellulose degradation, thiamin biosynthesis and cytosolic fatty acid synthase. Most symbiosis-related genes in R. irregularis and G. rosea are specific to Glomeromycotina. We also confirmed that the present species have a homokaryotic genome organisation. The high interspecific diversity of Glomeromycotina gene repertoires, affecting all known protein domains, as well as symbiosis-related orphan genes, may explain the known adaptation of Glomeromycotina to a wide range of environmental settings. Our findings contribute to an increasingly detailed portrait of genomic features defining the biology of AM fungi.
Masao Higo - One of the best experts on this subject based on the ideXlab platform.
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Molecular diversity and distribution of indigenous arbuscular mycorrhizal communities colonizing roots of two different winter cover crops in response to their root proliferation
Journal of Microbiology, 2016Co-Authors: Masao Higo, Yusuke Miyazawa, Yukiya Matsuda, Katsunori Isobe, Rhae A. Drijber, Yoichi TorigoeAbstract:A clear understanding of how crop root proliferation affects the distribution of the spore abundance of arbuscular mycorrhizal fungi (AMF) and the composition of AMF communities in agricultural fields is imperative to identify the potential roles of AMF in winter cover crop rotational systems. Toward this goal, we conducted a field trial using wheat ( Triticum aestivum L.) or red clover ( Trifolium pratense L.) grown during the winter season. We conducted a molecular analysis to compare the diversity and distribution of AMF communities in roots and spore abundance in soil cropped with wheat and red clover. The AMF spore abundance, AMF root colonization, and abundance of root length were investigated at three different distances from winter crops (0 cm, 7.5 cm, and 15 cm), and differences in these variables were found between the two crops. The distribution of specific AMF communities and variables responded to the two winter cover crops. The majority of Glomerales phylotypes were common to the roots of both winter cover crops, but Gigaspora phylotypes in Gigasporales were found only in red clover roots. These results also demonstrated that the diversity of the AMF colonizing the roots did not significantly change with the three distances from the crop within each rotation but was strongly influenced by the host crop identity. The distribution of specific AMF phylotypes responded to the presence of wheat and red clover roots, indicating that the host crop identity was much more important than the proliferation of crop roots in determining the diversity of the AMF communities.
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Temporal variation of the molecular diversity of arbuscular mycorrhizal communities in three different winter cover crop rotational systems
Biology and Fertility of Soils, 2015Co-Authors: Masao Higo, Katsunori Isobe, Rhae A. Drijber, Takuya Kondo, Moe Yamaguchi, Saki Takeyama, Yoichi TorigoeAbstract:A clear understanding of the significance of arbuscular mycorrhizal fungi (AMF) to phosphorus (P) nutrition in intensively managed cover crop rotational systems with soybean [ Glycine max (L.) Merr.] will impact how we currently manage these systems, particularly crop rotation decisions. We investigated the impact of wheat ( Triticum aestivum L.), rapeseed ( Brassica napus L.), or fallow on composition of AMF communities in soil over 2 years of a consecutive soybean rotational system. The composition of AMF communities was characterized on the basis of the large subunit (LSU) ribosomal DNA (rDNA). AMF spore abundance in soil after cultivation of wheat was higher than that after rapeseed or fallow for the all sampling years. Phylogenetic analysis identified 19 AMF phylotypes, including five Glomus ; three Gigaspora ; two of Acaulospora , Funneliformis , and Rhizophagus ; one of Racocetra , Claroideoglomus , Diversispora , and Sclerocystis ; and an unknown glomeromycete in soil. Dominant phylotypes of Glomerales occurred widely across the winter cover crop rotations. However, the phylotype richness and diversity of AMF communities were unchanged among crop rotations and years. Redundancy analysis (RDA) demonstrated that AMF communities within a crop rotation were not significantly different. However, when analyzed over a 2-year period, the composition of AMF communities was clearly influenced by year where the distribution of specific AMF phylotypes responded to the winter cover crop management. Thus, diversity of AMF communities in soil was clearly shifted by rotation year, which indicated that other abiotic environmental factors may impact composition AMF communities more than winter cover crop rotational systems.
Emmanuelle Morin - One of the best experts on this subject based on the ideXlab platform.
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Comparative genomics of Rhizophagus irregularis, R. cerebriforme, R. diaphanus and Gigaspora rosea highlights specific genetic features in Glomeromycotina.
The New phytologist, 2019Co-Authors: Emmanuelle Morin, Denis Beaudet, Shingo Miyauchi, Hélène San Clemente, Eric C. H. Chen, Adrian Pelin, Ivan De La Providencia, Steve Ndikumana, Mathieu Hainaut, Elodie DrulaAbstract:Glomeromycotina is a lineage of early diverging fungi that establish arbuscular mycorrhizal (AM) symbiosis with land plants. Despite their major ecological role, the genetic basis of their obligate mutualism remains largely unknown, hindering our understanding of their evolution and biology. We compared the genomes of Glomerales (Rhizophagus irregularis, Rhizophagus diaphanus, Rhizophagus cerebriforme) and Diversisporales (Gigaspora rosea) species, together with those of saprotrophic Mucoromycota, to identify gene families and processes associated with these lineages and to understand the molecular underpinning of their symbiotic lifestyle. Genomic features in Glomeromycotina appear to be very similar with a very high content in transposons and protein-coding genes, extensive duplications of protein kinase genes, and loss of genes coding for lignocellulose degradation, thiamin biosynthesis and cytosolic fatty acid synthase. Most symbiosis-related genes in R. irregularis and G. rosea are specific to Glomeromycotina. We also confirmed that the present species have a homokaryotic genome organisation. The high interspecific diversity of Glomeromycotina gene repertoires, affecting all known protein domains, as well as symbiosis-related orphan genes, may explain the known adaptation of Glomeromycotina to a wide range of environmental settings. Our findings contribute to an increasingly detailed portrait of genomic features defining the biology of AM fungi.
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Comparative genomics of Rhizophagus irregularis, R. cerebriforme, R. diaphanus and Gigaspora rosea highlights specific genetic features in Glomeromycotina
New Phytologist, 2019Co-Authors: Emmanuelle Morin, Denis Beaudet, Shingo Miyauchi, Hélène San Clemente, Eric C. H. Chen, Adrian Pelin, Ivan De La Providencia, Steve Ndikumana, Mathieu Hainaut, Elodie DrulaAbstract:Glomeromycotina is a lineage of early diverging fungi that establish arbuscular mycorrhizal (AM) symbiosis with land plants. Despite their major ecological role, the genetic basis of their obligate mutualism remains largely unknown, hindering our understanding of their evolution and biology. We compared the genomes of Glomerales (Rhizophagus irregularis, Rhizophagus diaphanus, Rhizophagus cerebriforme) and Diversisporales (Gigaspora rosea) species, together with those of saprotrophic Mucoromycota, to identify gene families and processes associated with these lineages and to understand the molecular underpinning of their symbiotic lifestyle. Genomic features in Glomeromycotina appear to be very similar with a very high content in transposons and protein-coding genes, extensive duplications of protein kinase genes, and loss of genes coding for lignocellulose degradation, thiamin biosynthesis and cytosolic fatty acid synthase. Most symbiosis-related genes in R. irregularis and G. rosea are specific to Glomeromycotina. We also confirmed that the present species have a homokaryotic genome organisation. The high interspecific diversity of Glomeromycotina gene repertoires, affecting all known protein domains, as well as symbiosis-related orphan genes, may explain the known adaptation of Glomeromycotina to a wide range of environmental settings. Our findings contribute to an increasingly detailed portrait of genomic features defining the biology of AM fungi.
Rhae A. Drijber - One of the best experts on this subject based on the ideXlab platform.
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Molecular diversity and distribution of indigenous arbuscular mycorrhizal communities colonizing roots of two different winter cover crops in response to their root proliferation
Journal of Microbiology, 2016Co-Authors: Masao Higo, Yusuke Miyazawa, Yukiya Matsuda, Katsunori Isobe, Rhae A. Drijber, Yoichi TorigoeAbstract:A clear understanding of how crop root proliferation affects the distribution of the spore abundance of arbuscular mycorrhizal fungi (AMF) and the composition of AMF communities in agricultural fields is imperative to identify the potential roles of AMF in winter cover crop rotational systems. Toward this goal, we conducted a field trial using wheat ( Triticum aestivum L.) or red clover ( Trifolium pratense L.) grown during the winter season. We conducted a molecular analysis to compare the diversity and distribution of AMF communities in roots and spore abundance in soil cropped with wheat and red clover. The AMF spore abundance, AMF root colonization, and abundance of root length were investigated at three different distances from winter crops (0 cm, 7.5 cm, and 15 cm), and differences in these variables were found between the two crops. The distribution of specific AMF communities and variables responded to the two winter cover crops. The majority of Glomerales phylotypes were common to the roots of both winter cover crops, but Gigaspora phylotypes in Gigasporales were found only in red clover roots. These results also demonstrated that the diversity of the AMF colonizing the roots did not significantly change with the three distances from the crop within each rotation but was strongly influenced by the host crop identity. The distribution of specific AMF phylotypes responded to the presence of wheat and red clover roots, indicating that the host crop identity was much more important than the proliferation of crop roots in determining the diversity of the AMF communities.
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Temporal variation of the molecular diversity of arbuscular mycorrhizal communities in three different winter cover crop rotational systems
Biology and Fertility of Soils, 2015Co-Authors: Masao Higo, Katsunori Isobe, Rhae A. Drijber, Takuya Kondo, Moe Yamaguchi, Saki Takeyama, Yoichi TorigoeAbstract:A clear understanding of the significance of arbuscular mycorrhizal fungi (AMF) to phosphorus (P) nutrition in intensively managed cover crop rotational systems with soybean [ Glycine max (L.) Merr.] will impact how we currently manage these systems, particularly crop rotation decisions. We investigated the impact of wheat ( Triticum aestivum L.), rapeseed ( Brassica napus L.), or fallow on composition of AMF communities in soil over 2 years of a consecutive soybean rotational system. The composition of AMF communities was characterized on the basis of the large subunit (LSU) ribosomal DNA (rDNA). AMF spore abundance in soil after cultivation of wheat was higher than that after rapeseed or fallow for the all sampling years. Phylogenetic analysis identified 19 AMF phylotypes, including five Glomus ; three Gigaspora ; two of Acaulospora , Funneliformis , and Rhizophagus ; one of Racocetra , Claroideoglomus , Diversispora , and Sclerocystis ; and an unknown glomeromycete in soil. Dominant phylotypes of Glomerales occurred widely across the winter cover crop rotations. However, the phylotype richness and diversity of AMF communities were unchanged among crop rotations and years. Redundancy analysis (RDA) demonstrated that AMF communities within a crop rotation were not significantly different. However, when analyzed over a 2-year period, the composition of AMF communities was clearly influenced by year where the distribution of specific AMF phylotypes responded to the winter cover crop management. Thus, diversity of AMF communities in soil was clearly shifted by rotation year, which indicated that other abiotic environmental factors may impact composition AMF communities more than winter cover crop rotational systems.