Arthrobotrys oligospora
-mediated biological control of diseases of tomato (Lycopersicon esculentum
 Mill.) caused by Meloidogyne incognita
 and Rhizoctonia solani

Singh, Udai B.; Sahu, Asha; Sahu, Nisha; Singh, Rahul Kumar; Sarin, Renu; Singh, Dhananjaya P.; Manna, M. C.; Sarma, B. K.; Singh, Harikesh Bahadur; Singh, Karuna

doi:10.1111/jam.12009

Cited by 42 publications

(30 citation statements)

References 40 publications

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“…More importantly, two identified species (Arthrobotrys oligospora, Acremonium sclerotigenum) may play an important role in the micro-ecological of R. glutinosa rhizosphere according to previous reports. It was confirmed that A. oligospora not only increased the plant growth and enhanced nutritional value of tomato but also functioned in controlling nematodes (Niu and Zhang 2011;Singh et al 2013;Yang et al 2011a). A. sclerotigenum was confirmed to be the pathogen of brown spot disease in apple .…”

Section: Discussionmentioning

confidence: 87%

Assaying the potential autotoxins and microbial community associated with Rehmannia glutinosa replant problems based on its ‘autotoxic circle’

Bao

Wang

et al. 2016

Plant Soil

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Aims This study attempted to elucidate the underlying correlations among replant problems of Rehmannia glutinosa, the autotoxins and microbes within its rootzone soil. Methods Different root-zone soils of R. glutinosa were collected to identify the potential autotoxins, to quantify the phenolic acids' concentration and to analyse the microbial community composition. Bioassay was conducted to assess the autotoxic potential of these samples and candidate autotoxins. Results R. glutinosa autotoxicity was presented within a 20 cm radius of the plant. Concentrations of the phenolic acids were significantly higher within this range. Twenty compounds and 17 microbes emerged in this range after the R. glutinosa cultivation. Further seedling test showed that four selected compounds possessed conspicuous autotoxic activity and a synergistic effect was observed. Moreover, one potential beneficial fungi (99 % similar with Arthrobotrys oligospora) and one potential pathogens (100 % similar with Acremonium sclerotigenum) were identified. Conclusions Our work defined the 'autotoxic circle' of R. glutinosa and identified the corresponding autotoxins and microbes. We suggest that R. glutinosa has various autotoxins and that these autotoxins and specific microbes deserve further investigation to unravel their interaction with R. glutinosa in replant problems' occurrence.

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Section: Discussionmentioning

confidence: 87%

Assaying the potential autotoxins and microbial community associated with Rehmannia glutinosa replant problems based on its ‘autotoxic circle’

Bao

Wang

et al. 2016

Plant Soil

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show abstract

“…Bands at 25,575 cm −1 could be attributed to charge transfer band. [38] Nickel(II) complex has a magnetic moment of 3.15B. M. indicating high-spin octahedral configuration.…”

Section: Solid Reflectance and Magnetic Studiesmentioning

confidence: 99%

Spectroscopic studies, Density Functional Theory calculations, and non‐linear optical properties of binuclear Fe(III), Co(II), Ni(II), Cu(II), and Zn(II) complexes of OONN Schiff base ligand

Moustafa

Elramly

2020

J Chinese Chemical Soc

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The binuclear complexes of Fe(III), Co(II), Ni(II), Cu(II), and Zn(II) with 2-[3-(benzylideneamino)-2-(benzylidenehydrazono)-4-oxothiazolidin-5-yl] acetic acid ligand (HL) were prepared and their stoichiometry was determined by elemental analysis. The stereochemistry of the studied binuclear metal complexes was confirmed by analyzing their infrared spectra, 1 H NMR, and magnetic moment. Thermal decomposition studies of the binuclear complexes have been performed to demonstrate the status of water molecules present in these binuclear complexes and their general decomposition pattern. The equilibrium geometry of the ligand and its studied complexes were calculated using density function theory (DFT) calculations at the B3LYP/GENECP level of the theory. The results show that the ligand and its complexes are nonplanar structures as indicated from the values of the dihedral angles. Extent of distortion from regular geometry has been performed and discussed in terms of the values of the angles between the central metals and the coordinated sites. The E HOMO and E LUMO energies of the studied ligand and its complexes are used to calculate the global properties. The nonlinear optical parameters (NLO), anisotropy of the polarizibility (Δα), and the mean first-order hyperpolarizability (<β>) were calculated. The (<β>) values were compared with Urea as a reference molecule and the results of (<β>) values showed that the ligand and the studied complexes have good NLO behaviors.

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“…It is used to control plant-parasitic nematodes, especially Meloidogyne spp. (Singh et al, 2012(Singh et al, , 2013. A. oligospora conidial germination is repressed by soil fungistasis (Liu, 2019), making it a suitable model organism for researching the mechanisms behind soil fungistasis relief by nutrients.…”

Section: Introductionmentioning

confidence: 99%

Comparative Transcriptomics Reveals Features and Possible Mechanisms of Glucose-Mediated Soil Fungistasis Relief in Arthrobotrys oligospora

et al. 2020

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Soil-borne pest diseases result in large annual agricultural losses globally. Fungal biocontrol agents are an alternative means of controlling pest diseases; however, soil fungistasis limits the effect of fungal agents. Nutrients can relieve soil fungistasis, but the mechanisms behind this process remain poorly understood. In this study, we determined and quantified the transcriptomes of Arthrobotrys oligospora, a nematodetrapping fungus, derived from samples of fresh conidia, germinated conidia, soil fungistatic conidia, and glucose-relieved conidia. The transcriptomes of fungistatic and glucose-relieved conidia were significantly different from those of the other two conidia samples. KEGG pathway analyses showed that those genes upregulated in fungistatic and glucose-relieved conidia were mainly involved in translation and substance metabolism, and the downregulated genes were mainly involved in MAPK pathway, autophagy, mitophagy, and endocytosis. As being different from the transcriptome of fungistatic conidia, upregulated genes in the transcriptome of glucose-relieved conidia are also related to replication and repair, spliceosome, oxidative phosphorylation, autophagy, and degradation pathway (lysosome, proteasome, and RNA degradation). And the upregulated genes resulted from comparison of glucose-relieved conidia and fungistatic conidia were enriched in metabolic pathways, cycle, DNA replication, and repair. The differentially splicing events in the transcriptome of glucose-relieved conidia are far more than that of other two transcriptomes, and genes regulated by differentially splicing were analyzed through KEGG pathway analysis. Furthermore, autophagy genes were proved to play important role in resisting soil fungistasis and glucose-mediated soil fungistasis relief. These data indicate that, in addition to being a carbon and energy source for conidia germination, glucose may also help to relieve soil fungistasis by activating many cellular processes, including autophagy, DNA replication and repair, RNA alternative splicing, and degradation pathways.

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Arthrobotrys oligospora -mediated biological control of diseases of tomato (Lycopersicon esculentum Mill.) caused by Meloidogyne incognita and Rhizoctonia solani

Cited by 42 publications

References 40 publications

Assaying the potential autotoxins and microbial community associated with Rehmannia glutinosa replant problems based on its ‘autotoxic circle’

Assaying the potential autotoxins and microbial community associated with Rehmannia glutinosa replant problems based on its ‘autotoxic circle’

Spectroscopic studies, Density Functional Theory calculations, and non‐linear optical properties of binuclear Fe(III), Co(II), Ni(II), Cu(II), and Zn(II) complexes of OONN Schiff base ligand

Comparative Transcriptomics Reveals Features and Possible Mechanisms of Glucose-Mediated Soil Fungistasis Relief in Arthrobotrys oligospora

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