Differential protein expression in Colletotrichum acutatum : changes associated with reactive oxygen species and nitrogen starvation implicated in pathogenicity on strawberry (Record no. 44179)

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control field MX-MdCICY
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control field 20250625140622.0
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Transcribing agency CICY
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Classification number (OCLC) (R) ; Classification number, CALL (RLIN) (NR) B-9936
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245 10 - TITLE STATEMENT
Title Differential protein expression in Colletotrichum acutatum : changes associated with reactive oxygen species and nitrogen starvation implicated in pathogenicity on strawberry
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Volume/sequential designation Molecular Plant Pathology, 9(2), p.171-190, 2008
520 3# - SUMMARY, ETC.
Summary, etc. The cellular outcome of changes in nitrogen availability in the context of development and early stages of pathogenicity was studied by quantitative analysis of two-dimensional gel electrophoresis of Colletotrichum acutatum infecting strawberry. Significant alterations occurred in the abundance of proteins synthesized during appressorium formation under nitrogen-limiting conditions compared with a complete nutrient supply. Proteins that were up- or down-regulated were involved in energy metabolism, nitrogen and amino acid metabolism, protein synthesis and degradation, response to stress and reactive oxygen scavenging. Members belonging to the reactive oxygen species (ROS)scavenger machinery, superoxide dismutase and glutathione peroxidase, were up-regulated at the appressorium formation stage, as well as under nitrogen-limiting conditions relative to growth with a complete nutrient supply, whereas abundance of bifunctional catalase was up-regulated predominantly at the appressorium formation stage. Fungal ROS were detected within germinating conidia during host pre-penetration, penetration and colonization stages, accompanied by plant ROS, which were abundant in the apoplastic space. Application of exogenous antioxidants quenched ROS production and reduced the frequency of appressorium formation. Up-regulation in metabolic activity was detected during appressorium formation and nutrient deficiency compared with growth under complete nutrient supply. Enhanced levels of proteins related to the glyoxylate cycle and lipid metabolism (malate dehydrogenase, formate dehydrogenase and acetyl-CoA acetyltransferase)were observed at the appressorium formation stage, in contrast to down-regulation of isocitrate dehydrogenase. The present study demonstrates that appressoria formation processes, occurring under nutritional deprivation, are accompanied by metabolic shifts, and that ROS production is an early fungal response that may modulate initial stages of pathogen development.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Brown, S.H.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Yarden, O.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Gollop, N.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Chen, S.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Zveibil, A.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Belausov, E.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Freeman, S.
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Uniform Resource Identifier <a href="https://drive.google.com/file/d/1FIJoiGXH5RQkCT_T0VMzgIuWxPPJAN-X/view?usp=drivesdk">https://drive.google.com/file/d/1FIJoiGXH5RQkCT_T0VMzgIuWxPPJAN-X/view?usp=drivesdk</a>
Public note Para ver el documento ingresa a Google con tu cuenta: @cicy.edu.mx
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Source of classification or shelving scheme Clasificación local
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  Clasificación local     Ref1 CICY CICY Documento préstamo interbibliotecario 25.06.2025   B-9936 25.06.2025 25.06.2025 Documentos solicitados