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Thomas Boller - One of the best experts on this subject based on the ideXlab platform.
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colonization of transgenic tobacco constitutively expressing pathogenesis related proteins by the vesicular arbuscular Mycorrhizal fungus glomus mosseae
Applied and Environmental Microbiology, 1995Co-Authors: Horst Vierheilig, Jurg Lange, M Gutrella, Andres Wiemken, Thomas BollerAbstract:We studied the effect of constitutive expression of pathogenesis-related proteins (PRs) in tobacco plants on Vesicular-Arbuscular Mycorrhiza. Tobacco lines genetically transformed to express various PRs constitutively under the control of the cauliflower mosaic virus 35S promoter of tobacco were examined. Immunoblot analysis and activity measurements demonstrated high levels of expression of the PRs in the root systems of the plants. Constitutive expression of the following acidic isoforms of tobacco PRs did not affect the time course or the final level of colonization by the Vesicular-Arbuscular Mycorrhizal fungus Glomus mosseae: PR-1a, PR-3 (=PR-Q), PR-Q(prm1), PR-4, and PR-5. Similarly, constitutive expression of an acidic cucumber chitinase, of a basic tobacco chitinase with and without its vacuolar targeting peptide, of a basic (beta)-1,3-glucanase, and of combinations of PR-Q and PR-Q(prm1) or basic chitinase and basic (beta)-1,3-glucanase did not affect colonization by the Mycorrhizal fungus. A delay of colonization by G. mosseae was observed in tobacco plants constitutively expressing the acidic isoform of tobacco PR-2, a protein with (beta)-1,3-glucanase activity.
Horst Vierheilig - One of the best experts on this subject based on the ideXlab platform.
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colonization of transgenic tobacco constitutively expressing pathogenesis related proteins by the vesicular arbuscular Mycorrhizal fungus glomus mosseae
Applied and Environmental Microbiology, 1995Co-Authors: Horst Vierheilig, Jurg Lange, M Gutrella, Andres Wiemken, Thomas BollerAbstract:We studied the effect of constitutive expression of pathogenesis-related proteins (PRs) in tobacco plants on Vesicular-Arbuscular Mycorrhiza. Tobacco lines genetically transformed to express various PRs constitutively under the control of the cauliflower mosaic virus 35S promoter of tobacco were examined. Immunoblot analysis and activity measurements demonstrated high levels of expression of the PRs in the root systems of the plants. Constitutive expression of the following acidic isoforms of tobacco PRs did not affect the time course or the final level of colonization by the Vesicular-Arbuscular Mycorrhizal fungus Glomus mosseae: PR-1a, PR-3 (=PR-Q), PR-Q(prm1), PR-4, and PR-5. Similarly, constitutive expression of an acidic cucumber chitinase, of a basic tobacco chitinase with and without its vacuolar targeting peptide, of a basic (beta)-1,3-glucanase, and of combinations of PR-Q and PR-Q(prm1) or basic chitinase and basic (beta)-1,3-glucanase did not affect colonization by the Mycorrhizal fungus. A delay of colonization by G. mosseae was observed in tobacco plants constitutively expressing the acidic isoform of tobacco PR-2, a protein with (beta)-1,3-glucanase activity.
Narayan Chandra Mandal - One of the best experts on this subject based on the ideXlab platform.
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role of phosphate solubilizing burkholderia spp for successful colonization and growth promotion of lycopodium cernuum l lycopodiaceae in lateritic belt of birbhum district of west bengal india
Microbiological Research, 2016Co-Authors: Ranjan Ghosh, Soma Barman, Rajib Mukherjee, Narayan Chandra MandalAbstract:Profuse growth of Lycpodium cernuum L. was found in phosphate deficient red lateritic soil of West Bengal, India. Interaction of Vesicular-Arbuscular Mycorrhiza (VAM) with Lycopodium rhizoids were described earlier but association of PGPR with their rhizoids were not studied. Three potent phosphate solubilizing bacterial strains (P4, P9 and P10) associated with L. cernuum rhizoids were isolated and identified by 16S rDNA homologies on Ez-Taxon database as Burkholderia tropica, Burkholderia unamae and Burkholderia cepacia respectively. Day wise kinetics of phosphate solubilization against Ca3(PO4)2 suggested P4 (580.56±13.38 μg ml(-1)) as maximum mineral phosphate solubilizer followed by P9 (517.12±17.15 μg ml(-1)) and P10 (485.18±14.23 μg ml(-1)) at 28 °C. Release of bound phosphates by isolated strains from ferric phosphate (FePO4), aluminum phosphate (AlPO4) and four different complex rock phosphates indicated their very good phosphate solubilizng efficacy. Nitrogen independent solubilizition also supports their nitrogen fixing capabilities. Inhibition of P solubilization by calcium salts and induction by EDTA suggested pH dependent chelation of metal cations by all of the isolates. Rhizoidal colonization potentials of Burkholderia spp. were confirmed by in planta experiment and also using scanning electron microscope (SEM). Increases of total phosphate content in Lycopodium plants upon soil treatment with these isolates were also recorded. In addition siderophore production on CAS agar medium, tryptophan dependent IAA production and antifungal activities against pathogenic fungi by rhizospheric isolates deep-rooted that they have definite role in nutrient mobilization for successful colonization of L. cernuum in nutrient deficient lateritic soil.
Musfal Musfal - One of the best experts on this subject based on the ideXlab platform.
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POTENSI CENDAWAN MIKORIZA ARBUSKULA UNTUK MENINGKATKAN HASIL TANAMAN JAGUNG
'Indonesian Agency For Agricultural Research and Development (IAARD)', 2017Co-Authors: Musfal MusfalAbstract:Potential of vesicular arbuscular Mycorrhiza in increasing maize yieldVesicular arbuscular Mycorrhizae ( VAM ) can associate and symbiose with 97% high level plant family. VAM is included in ordo Glomales, and based on the body structure and infection way can be grouped into endoMycorrhizae and ectoMycorrhizae. VAM is able to improve the physical and chemical properties of soil, increase nutrient absorption, improve plant resistance to drought, protect roots from pathogens, increase plant yield, and release the P fixation. EctoMycorrhizae fungi can be consumed and as medicine. Application of VAM up to 20 g/plant and 100% NPK dosage in Inceptisols affected root infection, P absorption, biomass weight, and increased maize yield. P absorption was positively correlated with the maize yield. VAM reduced the rate of NPK fertilizer up to 50%. Application of 50% NPK fertilizer added with VAM 15 g/plant produced maize yield that was not significantly different with application of 100% NPK fertilizer. The highest maize yield was produced with application of 100% NPK fertilizer added with VAM 20 g/plant.Keywords: Zea mays, vesicular arbuscular Mycorrhizae, yiel
Musfal M. - One of the best experts on this subject based on the ideXlab platform.
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Potensi Cendawan Mikoriza Arbuskula Untuk Meningkatkan Hasil Tanaman Jagung
'Indonesian Agency For Agricultural Research and Development (IAARD)', 2010Co-Authors: Musfal M.Abstract:Potential of vesicular arbuscular Mycorrhiza in increasing maize yieldVesicular arbuscular Mycorrhizae ( VAM ) can associate and symbiose with 97% high level plant family. VAM is included in ordo Glomales, and based on the body structure and infection way can be grouped into endoMycorrhizae and ectoMycorrhizae. VAM is able to improve the physical and chemical properties of soil, increase nutrient absorption, improve plant resistance to drought, protect roots from pathogens, increase plant yield, and release the P fixation. EctoMycorrhizae fungi can be consumed and as medicine. Application of VAM up to 20 g/plant and 100% NPK dosage in Inceptisols affected root infection, P absorption, biomass weight, and increased maize yield. P absorption was positively correlated with the maize yield. VAM reduced the rate of NPK fertilizer up to 50%. Application of 50% NPK fertilizer added with VAM 15 g/plant produced maize yield that was not significantly different with application of 100% NPK fertilizer. The highest maize yield was produced with application of 100% NPK fertilizer added with VAM 20 g/plant
