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Dissertations / Theses on the topic 'Gaeumannomyces graminis var. tritici'

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Published: 4 June 2021

Last updated: 1 February 2022

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1

Dyer, Sonya. "The role of colonisation of soil and wheat roots by Trichoderma koningii in biological control of Gaeumannomyces graminis var. tritici." Title page, table of contents and abstract only, 1998. http://web4.library.adelaide.edu.au/theses/09PH/09phd9966.pdf.

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2

Wake, Katherine Ann. "Host specificity and saponin resistance in oat-attacking isolates of Gaeumannomyces graminis var. tritici." Thesis, University of East Anglia, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.301960.

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3

Freeman, Jacqueline. "Molecular variation and population dynamics of the wheat take-all fungus (Gaeumannomyces graminis var. tritici)." Thesis, University of Hertfordshire, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.410142.

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4

Stanway, C. A. "Double-stranded RNA viruses and pathogenicity of the wheat take-all fungus, Gaeumannomyces graminis var. tritici." Thesis, Imperial College London, 1985. http://hdl.handle.net/10044/1/37865.

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5

Genowati, Indira. "Take-all in Wheat: PCR Identification of the Pathogen and the Interactions Amongst Potential Biological Control Agents." Thesis, Virginia Tech, 2001. http://hdl.handle.net/10919/35050.

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<i>Gaeumannomyces graminis var. triciti (Ggt)</i>, the causal agent of take-all in wheat, is difficult to detect accurately and rapidly due to its similarity to fungi in the Gaeumannomyces-Phialophora complex. My objectives are to detect the fungus in infested plants and soil, and to predict effective combinations of bacteria as biological control agents. Detection was based on avenacinase-based primers and polymerase chain reaction (PCR) conditions specified by earlier research. PCR conditions were modified to effect detection. The annealing temperature was lowered from 68 to 62Â°C for plant

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6

Ross, Ian Lindsay. "Mechanisms of biocontrol of Gaeumannomyces graminis var. tritici by Pseudomonas corrugata strain 2140 : genetic and biochemical aspects." Title page, table of contents and summary only, 1996. http://web4.library.adelaide.edu.au/theses/09PH/09phr824.pdf.

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Bibliography: leaves 207-220. Pseudomonas corrigata strain 2140 (Pc2140), isolated from wheat field soil in Australia, antagonises the take-all fungus, Gaeumannomyces graminis var. tritici (Ggt) in vitro and significantly reduces take-all symptoms on wheat in pot trials. This study investigates the mechanisms by which the biocontrol agent reduces the disease symptoms. Biochemical analysis of metabolites of P. corrugata 2140 reveal a number of compounds potentially antagonistic to Ggt and which may play a role in disease control. These include water-soluble antibiotics, siderophores, proteases,

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7

Schreiner, Karin. "Identifizierung mikrobieller Antagonisten gegen den bodenbürtigen phytopathogenen Pilz Gaeumannomyces graminis var. tritici und Nachweis antagonistisch wirkender Metaboliten." kostenfrei, 2008. http://mediatum2.ub.tum.de/doc/645671/645671.pdf.

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8

Nkemka, Pamela Nkengafac. "The effects of cereal-clover bicropping on the epidemiology of take-all (Gaeumannomyces graminis var. tritici) in wheat." Thesis, University of Reading, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.298856.

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9

Goodier, Robert Iain. "The role of cell density dependent signalling in interactions between Pseudomonas corrugata and the fungus Gaeumannomyces graminis var. tritici." Thesis, University of Aberdeen, 1999. http://digitool.abdn.ac.uk/R?func=search-advanced-go&find_code1=WSN&request1=AAIU117871.

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Quorum sensing using N-acyl homoserine lactone (N-AHL) signal molecules is a cell density-dependent mechanism which allows bacterial cells to co-ordinate their behaviour in concern with their own population size. Previous studies have indicated that the pathogenic fungus Gaeumannomyces graminis var. tritici (Ggt) secretes a homoserine lactone that promotes gene expression in the potential biocontrol bacterium Pseudomonas corrugata. The aim of this thesis was therefore to investigate the role of N-AHL signalling in interactions between these two organisms. It was demonstrated that Ggt does not

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10

Inwood, Richard J. "The impact of annual grasses and grass removal with herbicides on carry-over of take-all (Gaeumannomyces graminis var. tritici) /." Title page, contents and abstract only, 1997. http://web4.library.adelaide.edu.au/theses/09A/09ai63.pdf.

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11

Pillinger, Chad. "Effects of take all (Gaeumannomyces graminis var. tritici) on below ground resource capture and above ground growth of winter wheat." Thesis, University of Nottingham, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.273261.

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12

Barret, Matthieu. "Analyse différentielle du transcriptome de la rhizobactérie Pseudomonas fluorescens Pf29Arp lors d’interactions avec le champignon pathogène du blé Gaeumannomyces graminis var. Tritici." Rennes, Agrocampus Ouest, 2009. http://www.theses.fr/2009NSARA064.

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Certaines bactéries contribuent à réduire les maladies racinaires de plantes causées par des champignons pathogènes. La compétence rhizosphérique de ces bactéries antagonistes est un pré-requis à leur efficacité. Cependant, l’influence du champignon pathogène sur le déterminisme génétique de cette compétence n’est pas connue. L’influence d’une part du champignon seul, ou effet hyphosphère et d’autre part de la plante et du champignon, ou effet pathorhizosphère sur la régulation des déterminants génétiques bactérien a été évaluée dans ce travail. Pour cela, des confrontations entre la rhizobact

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13

CHAPON, ALAIN. "Etude de la specificite de colonisation racinaire du ble par pseudomonas fluorescens pf29a, antagoniste de gaeumannomyces graminis var. Tritici, l'agent du pietin-echaudage." Rennes 1, 2000. http://www.theses.fr/2000REN10135.

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L'accroissement des populations de p. Spp. Fluorescents observes au champ sur le rhizoplan du ble est souvent associe au declin du pietin-echaudage du ble. Le declin du pietin-echaudage constitue un processus naturel de reduction de l'impact au champ de cette maladie causee par le champignon gaeumannomyces graminis var. Tritici (ggt). Cette reduction de maladie est associee a la colonisation racinaire du ble par des souches de p. Spp. Fluorescents antagonistes de ggt. La souche de p. Fluorescens pf29a appartient a un groupe d'homologie rep-pcr dont l'extension est liee a la presence de necrose

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14

Werker, A. R. "The epidemiology of Gaeumannomyces graminis var. Tritici on winter wheat : the effects of selected agronomic factors on the progress and distribution of the disease." Thesis, University of Cambridge, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.305496.

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15

Schreiner, Karin [Verfasser], Jean Charles [Akademischer Betreuer] Munch, and Wolfgang [Akademischer Betreuer] Oßwald. "Identifizierung mikrobieller Antagonisten gegen den bodenbürtigen phytopathogenen Pilz Gaeumannomyces graminis var. tritici und Nachweis antagonistisch wirkender Metaboliten / Karin Schreiner. Gutachter: Wolfgang Oßwald. Betreuer: Jean Charles Munch." München : Universitätsbibliothek der TU München, 2008. http://d-nb.info/1054312389/34.

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16

Gosme, Marie. "Modélisation du développement spatio-temporel des maladies d'origine tellurique." Phd thesis, Agrocampus - Ecole nationale supérieure d'agronomie de rennes, 2007. http://tel.archives-ouvertes.fr/tel-00130776.

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Les maladies d'origine tellurique sont difficilement contrôlables par la lutte chimique ou variétale et se caractérisent par des processus et des échelles spatio-temporelles différents de ceux des maladies aériennes. En particulier, les modes de dispersion des agents pathogènes du sol permettent l'apparition et le maintien d'une forte structure spatiale de ces maladies, qui se développent souvent sous forme de foyers. Cette agrégation influence à la fois la dynamique temporelle des épidémies et la relation dégâts-dommages, ce qui en fait un élément important du raisonnement des méthodes de lut

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17

Habig, Johannes Hendrikus. "Soilborne disease suppressiveness / conduciveness : analysis of microbial community dynamics / by Johannes Hendrikus Habig." Thesis, North-West University, 2003. http://hdl.handle.net/10394/415.

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Take-all is the name given to the disease caused by a soilborne fungus Gaeumannomyces graminis (Sacc.) von Arx and Olivier var. tritici Walker (Ggt), an ascomycete of the family Magnaportheaceae (Cook, 2003). This fungus is an aggressive soil-borne pathogen causing root rot of wheat (primary host), barley and rye crops (secondary host). The flowering, seedling, and vegetative growth stages can be affected by the infection of the whole plant, leaves, roots, and stems. Infections of roots result in losses in crop yield and quality primarily due to a lowering in nutrient uptake. Take-all is most

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18

Chng, Soon Fang. "Microbial factors associated with the natural suppression of take-all in wheat in New Zealand : a thesis submitted in partial fulfilment of the requirements for the degree of Doctor of Philosophy at Lincoln University, Canterbury, New Zealand /." Diss., Lincoln University, 2009. http://hdl.handle.net/10182/863.

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Take-all, caused by the soilborne fungus, Gaeumannomyces graminis var. tritici (Ggt), is an important root disease of wheat that can be reduced by take-all decline (TAD) in successive wheat crops, due to general and/or specific suppression. A study of 112 New Zealand wheat soils in 2003 had shown that Ggt DNA concentrations (analysed using real-time PCR) increased with successive years of wheat crops (1-3 y) and generally reflected take-all severity in subsequent crops. However, some wheat soils with high Ggt DNA concentrations had low take-all, suggesting presence of TAD. This study investiga

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19

Ennaïfar, Sabah. "Protection intégrée contre le piétin-échaudage (Gaeumannomyces graminis tritici) du blé d'hiver." Rennes, Agrocampus, 2006. http://www.theses.fr/2006NSARA045.

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Gaeumannomyces graminis var. Tritici est un champignon tellurique pathogène responsable du piétin-échaudage des céréales à paille qui peut être à l'origine de pertes de rendement importantes. Le développement de ce champignon dépend de nombreux facteurs liés à la succession de culture, àl'itinéraire technique, au climat et au sol. L'agriculteur peut contrôler le piétin échaudage et réduire son impact sur le rendement en modifiant le système de clture (succession culturale, semis tardif, fertilisation azotée, traitement fongicide etc. ). A ce jour aucun outil d'aide à la décision n'a été dévelo

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20

Peixoto, Cecília do Nascimento. "Estudos epidemiológicos do mal-do-pé (Gaeumannomyces graminis (Sacc.) von Arx & Olivier var. graminis) em arroz (Oryza sativa L.) de terras altas, no estado de Goiás." Universidade Federal de Goiás, 2006. http://repositorio.bc.ufg.br/tede/handle/tede/4196.

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Submitted by Erika Demachki (erikademachki@gmail.com) on 2015-02-26T13:54:49Z No. of bitstreams: 2 Tese - Cecília do Nascimento Peixoto - 2006.pdf: 6636718 bytes, checksum: b112892e216b4dc189c4e9cb3dd28f4c (MD5) license_rdf: 23148 bytes, checksum: 9da0b6dfac957114c6a7714714b86306 (MD5)<br>Approved for entry into archive by Erika Demachki (erikademachki@gmail.com) on 2015-02-26T13:55:31Z (GMT) No. of bitstreams: 2 Tese - Cecília do Nascimento Peixoto - 2006.pdf: 6636718 bytes, checksum: b112892e216b4dc189c4e9cb3dd28f4c (MD5) license_rdf: 23148 bytes, checksum: 9da0b6dfac957114c6a7714714b86306 (

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21

Delalande, Laurie. "Implication de la voie oxydative du glucose et de l'induction de résistance systémique dans l'antagonisme de Pseudomonas fluorescens Pf29A vis à vis de Gaeumannomyces graminis var. Triciti, l'agent du piétin-échaudage du blé." Paris 11, 2002. http://www.theses.fr/2002PA112090.

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Pseudomonas fluorescens Pf29A réduit l'impact du piétin-échaudage, maladie tellurique du blé causée par le champignon Gaeumannomyces graminis var. Tritici (Ggt). Nous avons recherché les modes d'action de la souche Pf29A impliqués dans l'antagonisme. Une antibiose a été révélée in vitro sur le milieu GCY. Le glucose et le galactose entraînaient une forte activité antifongique alors qu'aucune antibiose n'était observée en présence de saccharose ou de fructose. Les sources de carbone responsables de l'activité antagoniste entraînaient également une acidification du milieu (pH 4). Ce pH était res

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22

Penrose, L. (Lindsay). "Resistance in `Triticum aestivum` to infection by `Gaeumannomyces graminis` var `Tritici` / by L. Penrose." 1985. http://hdl.handle.net/2440/20582.

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Bibliography: leaves 141-145<br>vii, 145 leaves, [4] leaves of plates : ill. (4 col.) ; 30 cm.<br>Title page, contents and abstract only. The complete thesis in print form is available from the University Library.<br>Thesis (Ph.D.)--University of Adelaide, Depts. of Plant Pathology and Agronomy, 1986

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23

Wilhelm, N. S. (Nigel S. ). "Investigations into `Gaeumannomyces graminis var. tritici' infection of manganese-deficient wheat / by N.S. Wilhelm." 1991. http://hdl.handle.net/2440/19756.

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24

Bartlett, Monika Eckstein. "Isolation and assessment of soilborne microorganisms as biological control agents of take-all disease (Gaeumannomyces graminis var. tritici)." 1994. http://hdl.handle.net/1993/17834.

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25

Ross, Ian L. "Mechanisms of biocontrol of Gaeumannomyces graminis var. tritici by Pseudomonas corrugata strain 2140 : genetic and biochemical aspects / Ian Ross." 1996. http://hdl.handle.net/2440/18760.

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Bibliography: leaves 207-220.<br>220 leaves : ill. ; 30 cm.<br>Title page, contents and abstract only. The complete thesis in print form is available from the University Library.<br>Pseudomonas corrigata strain 2140 (Pc2140), isolated from wheat field soil in Australia, antagonises the take-all fungus, Gaeumannomyces graminis var. tritici (Ggt) in vitro and significantly reduces take-all symptoms on wheat in pot trials. This study investigates the mechanisms by which the biocontrol agent reduces the disease symptoms. Biochemical analysis of metabolites of P. corrugata 2140 reveal a number of c

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26

Inwood, Richard J. (Richard James). "The impact of annual grasses and grass removal with herbicides on carry-over of take-all (Gaeumannomyces graminis var. tritici)." 1997. http://web4.library.adelaide.edu.au/theses/09A/09ai63.pdf.

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Bibliography: leaves 82-89. This study is aimed at providing information on control measures against Gaeumannomyces graminis var. tritici (abbreviated to Ggt) in annual pastures across southern Australia. The impact of timing of herbicide application, the impact of variation in timing of rainfall patterns, as well as herbicide application on the control of Ggt are also discussed. Additional experiments examine the ability of grass genera to host and carry over Ggt.

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27

Stebbing, Jo-Ann. "Isolation and screening of pseudomonad isolates for antagonism towards Gaeumannomyces graminis var. Tritici, causal agent of the take-all disease of winter wheat." 1990. http://hdl.handle.net/1993/17290.

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28

Vlaic, Maria. "Interactions between the Brassicaceae Brassica napus and Arabidopsis thaliana and the phytopathogenic fungus Verticillium longisporum." Doctoral thesis, 2012. http://hdl.handle.net/11858/00-1735-0000-0014-57F1-5.

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Brassica napus ist eine der wichtigsten Pflanzen in der Landwirtschaft. Pathogene verursachen jährlich große Ertragsverluste. Im Rahmen dieser Arbeit wurden die Interaktionen zwischen der Nutzpflanze Brassica napus bzw. der Modellpflanze Arabidopsis thaliana und dem phytopathogenen Pilz Verticillium longisporum untersucht. Verticillium longisporum ist ein auf Brassica spezialisierter Pilz, der die sogenannte Verticillium-Welke verursacht. Er dringt in die Wurzeln der Pflanze ein und steigt durch die Leitgefäße in den Spross auf. Die Pflanze zeigt in Folge der Infektion vor allem einen stark ve

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