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Series GSE2163 Query DataSets for GSE2163
Status Public on May 17, 2005
Title W23 and High altitude maize under solar and supplementary UV-B
Organism Zea mays
Experiment type Expression profiling by array
Summary Additional to GSE1807
A comparative analysis, by expression profiling of maize, was performed to identify novel components in the mechanisms of maize responses to UV-B. Five high-altitude landraces grown from 2,000 to 3,400 m naturally receive higher UV-B fluence than plants at lower altitudes and similar latitudes. These high-altitude landraces were compared directly with a low-altitude line and with literature reports for other temperate maize lines. A microarray analysis demonstrated that among the UV-B responsive transcripts, several types of gene implicated in chromatin remodeling are differentially expressed before and after UV-B treatment in high-altitude lines. RNAi transgenic plants with lower expression of four such chromatin-associated genes exhibited hypersensitivity to UV-B by measurements of leaf arching, increased leaf chlorosis and necrosis, and altered UV-B regulation of selected genes. These results collectively suggest that genes involved in chromatin remodeling are crucial for UV-B acclimation and that some high-altitude lines exhibit adaptations to this challenge.
 
 
Contributor(s) Casati P, Walbot V
Citation(s) 16640598
Submission date Jan 17, 2005
Last update date Mar 16, 2012
Contact name Paula Casati
E-mail(s) casati@cefobi-conicet.gov.ar
Phone 54-341-4371955
Organization name Universidad Nacional de Rosario
Department Biological Sciences
Lab Casati
Street address Suipacha 531
City Rosario
State/province Santa Fe
ZIP/Postal code 2000
Country Argentina
 
Platforms (1)
GPL498 ZmDB Array Unigene-1-01-01
Samples (12)
GSM31198 W23 b,pl leaves under solar UV-B
GSM31199 Confite under solar UV-B-3
GSM31202 Mishca leaves under solar UV-B-3
Relations
BioProject PRJNA91431

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