title: Physiological changes in green stems of Vitis vinifera L. cv. Chardonnay in response to esca proper and apoplexy revealed by proteomic and transcriptomic analyses.
abstract: Among grapevine trunk diseases, esca proper and apoplexy commonly represent a threat for viticulture worldwide. To retrieve further information about the mechanisms activated in apoplectic and esca proper-affected plants, a two-dimensional gel electrophoresis (2-DE) based analysis was conducted on green stems from 26-year-old standing vines. Symptomatic and asymptomatic stems from both apoplectic (A) and esca proper-affected (E) plants compared to control (without visual symptom since 10 years) stems were studied. Thirty-three differentially expressed proteins were identified by nanoLC-MS/MS and included into three groups conceptually defined as proteins involved in (i) metabolism and energy, (ii) stress tolerance, and (iii) defense response. For nine of them, expression of the relative mRNA's was also monitored by qRT-PCR. Proteome variations were specifically related to apoplexy and esca proper but were more similar in asymptomatic stems than in the symptomatic ones. Remarkable quantitative differences were noted for several proteins in symptomatic stems according to the expressed form, A and E. Results further indicate that similar responses are likely activated in asymptomatic stems but a various quantitative expression is triggered upon onset of apoplexy or esca proper symptoms while both kind of plants are infected by the same pathogenic fungi.
authors: Université de Reims Champagne-Ardenne, URVVC EA 2069, Laboratoire Stress, Défenses et Reproduction des Plantes, BP 1039, 51687 Reims Cedex 2, France.
authors: Alessandro
authors: A
authors: Spagnolo
authors: Maryline
authors: M
authors: Magnin-Robert
authors: Tchilabalo Dilezitoko
authors: TD
authors: Alayi
authors: Clara
authors: C
authors: Cilindre
authors: Laurence
authors: L
authors: Mercier
authors: Christine
authors: C
authors: Schaeffer-Reiss
authors: Alain
authors: A
authors: Van Dorsselaer
authors: Christophe
authors: C
authors: Clément
authors: Florence
authors: F
authors: Fontaine
mesh_terms: D015180:Electrophoresis, Gel, Two-Dimensional; D004734:Energy Metabolism / Q000235:genetics; D005658:Fungi / Q000302:isolation & purification; D020869:Gene Expression Profiling; D010446:Peptide Fragments / Q000737:chemistry; D010449:Peptide Mapping; D010935:Plant Diseases / Q000382:microbiology*; D057865:Plant Immunity / Q000235:genetics; D010940:Plant Proteins / Q000737:chemistry / Q000235:genetics / Q000378:metabolism*; D018547:Plant Stems / Q000235:genetics / Q000378:metabolism / Q000502:physiology*; D059748:Proteolysis; D020543:Proteome / Q000737:chemistry / Q000235:genetics / Q000378:metabolism*; D040901:Proteomics; D060888:Real-Time Polymerase Chain Reaction; D013312:Stress, Physiological; D053719:Tandem Mass Spectrometry; D059467:Transcriptome; D027843:Vitis / Q000235:genetics / Q000378:metabolism / Q000502:physiology*
chemical_list: D010446:Peptide Fragments; D010940:Plant Proteins; D020543:Proteome