| Abstract Detail
Salinity Zhou, Suping [1]. Identification of salt affected genes in tomato seedlings using a cDNA microarray profiling. Large-scale gene expression affected by salt stress was analyzed in tomato seedlings (Lycoperson esculentum Mill cv. Money Maker) by a cDNA microarrays (Tom1). The significantly differentially expressed genes (p<0.05) consisted of 1551 and 1757 sequences in root and leaves (cotyledons+ shoot tip), respectively. When further restricted to 2 fold changes, the genes down-regulated in leaves were annotated into five enzyme proteins, those up-regulated were annotated into 17 enzymes. The genes down-regulated in root were annotated into 14 enzymes, and those up-regulated root were annotated into 20 enzymes. There were 3 enzymes that were down-regulated in both leaf and root, and 16 enzymes were up-regulated in both root and leaf. Sixty-six function annotation that contained both up and down-regulated members in both leaf and root. When categorized into different cellular processes, the down-regulated genes were related with cell production, protein translation, electron transport, disease resistance, and homeostasis of oxidative status. Genes associated with ethylene synthesis and down-stream responsive genes, programmed cell death, acid phosphatase (AP), and secondary metabolism were up-regulated. Multiple genes belonging to transcriptional factor, protein kinase, protein phosphatase, proteases, chaperones, membrane transport, and calmodulin, were identified to be differently regulated by salt stress. Log in to add this item to your schedule
1 - Tennessee State University, Institute of Agricultural and Environmental Research, 3500 John A Merritt Blvd, Nashville, TN, 37209, USA
Keywords: salt abiotic stress.
Presentation Type: Plant Biology Abstract Session: P Location: Exhibit Hall (Northeast, Southwest & Southeast)/Hilton Date: Sunday, July 8th, 2007 Time: 8:00 AM Number: P07014 Abstract ID:1625 |