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Dissertations / Theses on the topic 'Necrotrophic'

Author: Grafiati

Published: 5 June 2025

Last updated: 2 August 2025

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1

Kaile, Androulla. "The role of calcium in necrotrophic plant pathogenesis." Thesis, University of Exeter, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.253532.

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2

Gao, Yuanyuan. "Identification and Functional Characterization of Necrotrophic Effectors in Parastagonospora Nodorum." Diss., North Dakota State University, 2015. http://hdl.handle.net/10365/25490.

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The necrotrophic fungus Parastagonospora nodorum (teleomorph; Phaeosphaeria nodorum), is the causal agent of Septoria nodorum blotch (SNB) on common wheat (Triticum aestivum L.) and durum wheat (Triticum turgidum L.). SNB is a serious foliar and glume disease which causes significant yield losses in major wheat growing areas and has serious impact on grain quality. P. nodorum produces necrotrophic effectors (NEs) that are recognized by and interact with dominant host sensitivity genes in an inverse gene-for-gene manner. The NE-host interaction is critical to induce necrotrophic effector-

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3

Miller, Laurie. "Studies on CBH1 : a cellobiohydrolase of Sclerotinia sclerotiorum." Thesis, University of Sheffield, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.364190.

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4

Hutchens, Andrew R. "Ambient pH- and carbon-regulated gene expression in the necrotrophic phytopathogen Sclerotinia sclerotiorum." [Gainesville, Fla.] : University of Florida, 2005. http://purl.fcla.edu/fcla/etd/UFE0011843.

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5

Lundén, Karl. "Heterobasidion - conifer pathosystem : heterologous array analysis and transcriptional shift from saprotrophic to necrotrophic growth /." Uppsala : Department of Forest Mycology and Pathology, Swedish University of Agricultural Sciences, 2010. http://epsilon.slu.se/201019.pdf.

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6

Hane, James. "Bioinformatic genome analysis of the necrotrophic wheat-pathogenic fungus Phaeosphaeria nodorum and related Dothideomycete fungi." Thesis, Hane, James (2011) Bioinformatic genome analysis of the necrotrophic wheat-pathogenic fungus Phaeosphaeria nodorum and related Dothideomycete fungi. PhD thesis, Murdoch University, 2011. https://researchrepository.murdoch.edu.au/id/eprint/5803/.

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Phaeosphaeria nodorum (anamorph: Stagonospora nodorum) is the causal agent of Stagonospora nodorum blotch (SNB, syn. glume blotch) in wheat. P. nodorum is estimated to cause up to 31% wheat yield loss worldwide. Within Australia it is the primary pathogen of wheat and is estimated to cause losses of $108 million per annum. The genome assembly of P. nodorum was sequenced in 2005 and was the first species in the class Dothideomycetes, a significant fungal taxon containing several major phytopathogens, to be publically released. The P. nodorum genome database has since evolved from basic sequence

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7

Gallego, Páramo Berta. "Unravelling the role of zinc in the resistance to necrotrophic fungi in arabidopsis thaliana and noccaea caerulescens." Doctoral thesis, Universitat Autònoma de Barcelona, 2014. http://hdl.handle.net/10803/319689.

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El zinc es un micronutriente esencial para las plantas, pero tóxico a concentraciones elevadas. La mayoría de las plantas adaptadas a suelos metalíferos excluyen el exceso de metales de sus tejidos. Sin embargo, algunas plantas denominadas hiperacumuladoras toleran y acumulan en parte aérea concentraciones de metales extremadamente altas. Una de las hipótesis más aceptadas que explica la adquisición de este rasgo relaciona una elevada concentración de metales con una mayor resistencia a patógenos y herbívoros (hipótesis de la defensa metálica). De hecho, existen evidencias de que altas c

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8

Feliciano-Rivera, Merari. "EFFICACY OF ORGANICALLY CERTIFIABLE MATERIALS AND NATURAL COMPOUNDS AGAINST FOLIAR HEMIBIOTROPHIC AND NECROTROPHIC FUNGI IN CANTALOUPE AND TOMATO." UKnowledge, 2011. http://uknowledge.uky.edu/gradschool_diss/225.

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Kentucky reported a solid 13.1% growth in certified organic land from 1997 to 2002. The relative lack of research on disease management practices in Kentucky consistent with organic regulations is an issue that needs to be addressed to provide more reliable information to local farmers. Thus, the first objective of this research was to investigate the potential disease control obtained with natural, organically certifiable spray materials against Colletotrichum orbiculare in vitro and in vivo. The second objective was to test certifiable spray materials in combinations to identify synergistic

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9

Peters, Amanda Rose. "Quantification of Disease Expression Conferred by Three Host Gene-Necrotrophic Effector Interactions in the Wheat-Parastagonospora Nodorum Pathosystem." Thesis, North Dakota State University, 2017. https://hdl.handle.net/10365/28453.

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Septoria nodorum blotch is a wheat foliar and glume disease caused by Parastagonospora nodorum, a necrotrophic fungal pathogen. Snn1-SnTox1, Snn3-B1-SnTox3, and Tsn1-SnToxA are three important interactions between wheat necrotrophic effector sensitivity genes and P. nodorum effectors. I evaluated a recombinant inbred population that segregated for these three necrotrophic effector sensitivity genes with P. nodorum isolates containing various combinations of the three corresponding necrotrophic effectors. The Tsn1-SnToxA and Snn3-B1-SnTox3 interactions explained up to 32.7 and 21.2% of the dise

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10

Rausch, Stephanie [Verfasser], and Sascha [Akademischer Betreuer] Laubinger. "The function of Arabidopsis microRNAs in defense against the necrotrophic fungal pathogen Alternaria brassicicola / Stephanie Rausch ; Betreuer: Sascha Laubinger." Tübingen : Universitätsbibliothek Tübingen, 2018. http://d-nb.info/119911605X/34.

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11

Wijayanto, Teguh. "Genetic manipulation of programmed cell death (PCD) for reduced susceptibility to necrotrophic fungi in narrow-leafed lupin (Lupinus angustifolius) /." Connect to this title, 2006. http://theses.library.uwa.edu.au/adt-WU2007.0206.

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12

Scott, Derrick Cornelius. "The Cell Wall Integrity-Associated Map Kinase Homolog, AbSlt2 in the Necrotrophic fungus Alternaria brassicicola is Required for Pathogenicity of Brassicas." Thesis, Virginia Tech, 2009. http://hdl.handle.net/10919/31203.

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Using the genome database of the phytopathogenic fungus, Alternaria brassicicola, we identified a gene with high homology to the cell wall integrity-associated mitogen-activated protein (MAP) kinase, Slt2 in the yeast, Saccharomyces cerevisiae. This MAP kinase consists of a predicted 1,251-bp open reading frame, and encodes a 416-amino-acid protein weighing 47501 Da. This homolog was designated AbSlt2 (A. brassicicola Slt2) and gene disruption knockout (KO) mutants were generated in an A. brassicicola wild type background. Several altered phenotypes were found in the mutants compared to the wi

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13

Gamba, Fuica Fernanda M. [Verfasser]. "Studies on the diversity of the main necrotrophic pathogens on wheat and barley Pyrenophora tritici-repentis and Cochliobolus sativus / Fernanda M. Gamba Fuica." Kassel : Universitätsbibliothek Kassel, 2017. http://d-nb.info/1170364756/34.

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14

Pai, Subhash Balakrishnan [Verfasser]. "Identification, molecular characterization and analysis of the role of MORC gene family in disease resistance mechanisms to biotrophic and necrotrophic fungi in barley / Subhash Balakrishnan Pai." Gießen : Universitätsbibliothek, 2014. http://d-nb.info/1068824840/34.

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15

Fassoni, Andréia Cnossen. "A pectato liase codificada pelo gene pecCl1 é importante para agressividade de Colletotrichum lindemuthianum." Universidade Federal de Viçosa, 2012. http://locus.ufv.br/handle/123456789/5364.

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Made available in DSpace on 2015-03-26T13:51:58Z (GMT). No. of bitstreams: 1 texto completo.pdf: 952076 bytes, checksum: 7fbcb43414ecacd3439620826b6172cd (MD5) Previous issue date: 2012-07-20<br>Conselho Nacional de Desenvolvimento Científico e Tecnológico<br>Colletotrichum lindemuthianum is the causal agent of common bean anthracnose. Genes that encode cell wall-degrading enzymes are essential for the development of this disease. The pectinases are characterized as the most important group of cell wall- degrading enzymes produced by phytopathogen fungi. The gene coding for pectate lyase, pe

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16

Barrière, Virginie. "Gestion des bio-agresseurs et réduction des pesticides en culture de laitue sous abris froids : apports croisés d’expérimentations factorielles et systémiques." Thesis, Avignon, 2015. http://www.theses.fr/2015AVIG0668/document.

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La réduction de la dépendance aux pesticides des systèmes de culture de laitue constitue un objectif à relativement court terme, partagé par les pouvoirs publics et les acteurs de la filière de production. Atteindre cet objectif suppose de disposer de moyens techniques permettant de substituer aux pesticides d’autres méthodes limitant les dégâts de bio-agresseurs de la laitue.Ces techniques peuvent être destinées à minimiser l’entrée d’inoculum dans les parcelles, à limiter la propagation des bio-agresseurs, à diminuer la sensibilité des plantes, ou à éradiquer les bio-agresseurs présents sur

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17

com, rohanlowe@gmail, and Rohan George Thomas Lowe. "Sporulation of Stagonospra nodorum." Murdoch University, 2006. http://wwwlib.murdoch.edu.au/adt/browse/view/adt-MU20071101.221432.

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Stagonospora nodorum is a necrotrophic fungal pathogen that is the causal agent of leaf and glume blotch on wheat. Very little is currently known about the molecular mechanisms required for pathogenicity of S. nodorum, despite its major impact on Australian agriculture. S. nodorum is a polycyclic pathogen. Rain-splashed pycnidiospores attach to and colonise wheat tissue and subsequently sporulate within 2-3 weeks. Several cycles of infection are needed to build up inoculum for the damaging infection of flag leaves and heads, sporulation is therefore a critical component of the infection cycle

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18

Shouan, Liu [Verfasser], Paul [Akademischer Betreuer] Schulze-Lefert, and Ulf-Ingo [Akademischer Betreuer] Flügge. "The role of Arabidopsis WRKY33 in modulating host immunity towards the necrotroph Botrytis cinerea / Liu Shouan. Gutachter: Paul Schulze-Lefert ; Ulf-Ingo Flügge." Köln : Universitäts- und Stadtbibliothek Köln, 2015. http://d-nb.info/1075316944/34.

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19

Mercier, Alex. "Déterminants génomiques de la spécialisation à l’hôte chez le champignon phytopathogène polyphage Botrytis cinerea." Thesis, Université Paris-Saclay (ComUE), 2019. http://www.theses.fr/2019SACLS442.

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Les champignons phytopathogènes sont des parasites majeurs des espèces végétales, autant naturelles que domestiquées. Botrytis cinerea, l’agent de la pourriture grise, en infecte plus de 1400 et est ainsi considéré comme un pathogène généraliste. Pourtant, des données récentes ont mis en évidence une structure des populations liée à leur hôte d’origine. Cette observation soulève l’hypothèse d’une spécialisation à l’hôte, à l’œuvre chez une espèce généraliste. Ce modèle d’étude pourrait permettre de faire avancer la connaissance des mécanismes évolutifs en jeu dans la divergence précoce des pop

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20

Abou, al Fadil Taissir. "Déterminisme de la tolerance du tournesol a Phoma Macdonaldii au collet et sur racines : approches génétique et histologiques." Toulouse, INPT, 2006. http://ethesis.inp-toulouse.fr/archive/00000300/.

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La maladie des taches noires du tournesol, ou Phoma du tournesol, est la deuxième maladie plus importante après le Mildiou en France. Elle provoque des pertes de rendement qui peuvent atteindre jusqu'à 70%. Les études réalisées à ce jour portent essentiellement sur la contamination du tournesol par Phoma macdonaldii au niveau de la tige. Cependant, aucun travail n'a été réalisé sur les attaques de Phoma au niveau des racines et du collet. Nos travaux ont porté sur : mise au point d'un test de contamination racinaire et au collet à la transformation de souches de Phoma macdonaldii avec une prot

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21

Sprockett, Daniel David. "The Evolution of Fungal Pectinases in Glycosyl Hydrolase Family 28 and Their Association with Ecological Strategy." Kent State University / OhioLINK, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=kent1259688919.

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22

Badet, Thomas. "Genome scale analysis of Arabidopsis thaliana quantitative disease resistance to the generalist fungal pathogen Sclerotinia sclerotiorum." Electronic Thesis or Diss., Toulouse 3, 2017. http://www.theses.fr/2017TOU30403.

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Les interactions entre plantes et agents pathogènes sont fréquentes dans la nature, mais conduisent rarement à une maladie. En effet, les plantes ont un système immunitaire efficace capable de faire face à la plupart des attaques microbiennes. Les agents pathogènes fongiques représentent néanmoins une menace majeure pour la sécurité alimentaire dans le monde. Sclerotinia sclerotiorum est un champignon pathogène de la famille des Ascomycetes responsable de la maladie de la pourriture blanche sur des centaines d'espèce de plantes. Il n'y a aucune source génétique de résistance complète à ce path

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23

Dubois, Thomas. "Etude du système de communication cellulaire NprR-NprX au sein du groupe Bacillus cereus." Phd thesis, AgroParisTech, 2012. http://pastel.archives-ouvertes.fr/pastel-00770265.

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Chez les bactéries sporulantes du genre Bacillus, des mécanismes importants tels que la sporulation et la virulence sont régulés par des systèmes de communication cellulaire qui impliquent des peptides de signalisation et des régulateurs de la famille RNPP (Rap, NprR, PlcR, PrgX). L'objectif de mon travail de thèse a été de déterminer le rôle du régulateur NprR chez les bactéries du groupe B. cereus. Ce travail se divise en trois parties complémentaires. La première partie a consisté à montrer que NprR est impliqué dans un système de communication cellulaire. Nous avons montré que NprR est un

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24

Andrew, Marion. "The Evolution of Necrotrophic Parasitism in the Sclerotiniaceae." Thesis, 2011. http://hdl.handle.net/1807/31676.

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Given a shared toolbox of pathogenicity-related genes among a set of species, why is one species a biotroph and specialist while another is a necrotroph and generalist? Is it the result of selection on primary sequence, or on proteins, or alternatively, differences in the timing and magnitude of gene expression? The Sclerotiniaceae (Ascomycota, Leotiomycetes, Helotiales) is a relatively recently evolved family of fungi whose members include host generalists and host specialists, and the spectrum of trophic types. Based on a phylogeny inferred from three, presumably evolutionarily conserved

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25

Du, Fall Lauren Amanda. "Elucidating the mechanisms of necrotrophic effectors in the Stagonospora nodorum-wheat pathosystem." Phd thesis, 2014. http://hdl.handle.net/1885/156088.

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Stagonospora nodorum is a host-specific necrotrophic pathogen of wheat and the causal agent of Stagonospora nodorum blotch (SNB). Stagonospora nodorum secretes several unique effector proteins that induce chlorosis and necrosis on leaves of susceptible hosts. Several dominant genes in the host confer susceptibility to Stagonospora nodorum effectors in an inverse gene-for-gene manner. The mechanisms underlying effector-induced necrosis are yet to be fully elucidated. The aim of this study was to determine the host metabolite response to infiltration of purified effectors. Comprehensive metaboli

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26

Chen, Po-Wen, and 陳柏文. "Priming of the Arabidopsis Pattern-Triggered Immunity Response upon Infection by Necrotrophic Pectobacterium carotovorum Bacteria." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/32372109546279046724.

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碩士<br>國立臺灣大學<br>植物科學研究所<br>100<br>Boosted responsiveness of plant cells to stress at the onset of pathogen- or chemically-induced resistance is called priming. The chemical beta-aminobutyric acid (BABA) enhances Arabidopsis thaliana resistance to hemi-biotrophic bacteria through priming of the salicylic acid (SA) defence response. Whether BABA increases Arabidopsis resistance to necrotrophic bacteria such as Pectobacterium carotovorum subsp. carotovorum (Pcc) is not clear. Here we show that treatment with BABA protects Arabidopsis against the soft-rot pathogen Pcc. BABA did not prime the expre

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27

Lin, Shao-Yu. "The study of transcriptional regulation of necrotrophic effector genes ToxA and Tox3 in the wheat pathogen Parastagonospora nodorum." Phd thesis, 2017. http://hdl.handle.net/1885/132667.

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Parastagonospora nodorum (P. nodorum) is an important necrotrophic fungus on wheat causing significant yield losses in Australia per annum. It is now widely recognized that P. nodorum causes disease by secreting necrotrophic effectors (NEs) which induce necrosis on susceptible wheat leaves through an inverse gene for gene manner. Two of the NEs described are ToxA and Tox3. Previous reports have shown that ToxA and Tox3 are highly upregulated during infection. However, how these effectors are regulated and expressed is largely unclear. To better understan

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28

(9760526), Pablo Vega. "DRUG DELIVERY NANOSYSTEMS AS PLANT “VACCINES”: FABRICATION AND ASSESSMENT OF THEIR USE FOR PLANT PROTECTION AGAINST BROAD HOST-RANGE NECROTROPHIC PATHOGENS." Thesis, 2020.

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<p>Drug-delivery nano-systems enhances the potency of bioactive molecules due to its increase membrane permeability, as a result of their sub-cellular size. The concept of engineered nano-carriers may be a promising route to address confounding challenges in agriculture that could lead to an increase in crop production while reducing the environmental impact associated with crop protection and food production. A key motivation of this work is to evaluate the potential use of drug delivery nanosystems in agriculture, especially in the area of disease control. To this end, identifying the most s

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