title: Temporary effect of postharvest UV-C irradiation on gene expression profile in tomato fruit.
abstract: To obtain an overall view on gene expression during the early stage (24 h) of tomato fruit in response to postharvest UV-C irradiation (4 kJ/m(2)), we performed a microarray analysis by using Affymetrix Tomato Genechip. The results showed that 274 and 403 genes were up- or down-regulated, respectively, more than two folds in postharvest tomato fruit irradiated with UV-C as compared with that in control fruit. The up-regulated genes mainly involve in signal transduction, defense response and metabolism. Conversely, genes related to cell wall disassembly, photosynthesis and lipid metabolism were generally down-regulated. These results opened ways to probe into the molecular mechanisms of the effects of postharvest UV-C irradiation on increased disease resistance, delayed softening, better quality maintenance and prolonged postharvest life in tomato fruit.
authors.affiliation: Department of Food Science and Nutrition, Zhejiang University, Hangzhou, PR China.
authors.forename: Changhong
authors.initials: C
authors.lastname: Liu
authors.forename: Luyun
authors.initials: L
authors.lastname: Cai
authors.forename: Xiaoxu
authors.initials: X
authors.lastname: Han
authors.forename: Tiejin
authors.initials: T
authors.lastname: Ying
mesh_terms: D002473:Cell Wall / Q000235:genetics; D017931:DNA Primers / Q000235:genetics; D018744:DNA, Plant / Q000235:genetics; D005030:Ethylenes / Q000096:biosynthesis; D005514:Food Irradiation; D005638:Fruit / Q000235:genetics / Q000378:metabolism / Q000528:radiation effects; D015870:Gene Expression / Q000528:radiation effects; D020869:Gene Expression Profiling; D017343:Genes, Plant / Q000528:radiation effects*; D050356:Lipid Metabolism / Q000235:genetics; D018551:Solanum lycopersicum / Q000235:genetics* / Q000378:metabolism / Q000528:radiation effects*; D020411:Oligonucleotide Array Sequence Analysis; D016133:Polymerase Chain Reaction; D012333:RNA, Messenger / Q000235:genetics / Q000378:metabolism; D018749:RNA, Plant / Q000235:genetics / Q000378:metabolism; D014466:Ultraviolet Rays
chemical_list: D017931:DNA Primers; D018744:DNA, Plant; D005030:Ethylenes; D012333:RNA, Messenger; D018749:RNA, Plant; C036216:ethylene