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  • Title: Identification of programmed cell death related genes in bamboo.
    Author: Rai V, Dey N.
    Journal: Gene; 2012 Apr 15; 497(2):243-8. PubMed ID: 22326529.
    Abstract:
    The event of bamboo flowering and subsequent death of bamboo cells, a rare phenomenon is an interesting model to study gene expression/function in the context of the programmed cell death (PCD) in plant. To identify genes involved in autolytic cell death in bamboo (Bambusa arundinacea/Bambusa bambos Voss), a suppressive subtractive cDNA hybridization (SSH) was performed between cDNA isolated from control (healthy), as driver and test internodal tissue (45days after setting of seeds), as tester. In-silico data revealed that 82% of total ESTs (231) were non-significant (unidentified proteins) while remaining ESTs were classified as protein with known/predicted function/s. Among these, net distribution and differential expression patterns of 11 important B. arundinacea PCD specific ESTs were studied using RNA slot-blot, qRT-PCR and semi-quantitative RT. In-situ localization of mRNA-transcripts for selected bamboo PCD-specific ESTs namely V2Ba48 (Aldehyde dehydrogenase 2) and V2Ba19 (Glycogen phosphorylase) were detected using digoxigenin-labeled corresponding anti-sense RNA probes employing Confocal Laser Scanning Microscope (CLSM). Differential expression-kinetics of the aforementioned genes were confirmed during the progress of PCD after setting of seeds. Global appearance of V2Ba48, V2Ba19, V2Ba95 (Ubiquitin thioesterase) and V2Ba89 (Nebulin isoform 2) genes were identified in monocot (Oryza sativa) and dicots (Arabidopsis thaliana and Nicotiana tabacum). This is the first report on systematic analysis of genes involved in death of bamboo cells that may provide critical information regarding key metabolic/regulatory genes involved in plant PCD.
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