Gene transcriptomic profile in arabidopsis thaliana mediated by radiation-induced bystander effects
نویسندگان
چکیده مقاله:
Background: The in vivo radiation-induced bystander effects (RIBE) at the developmental, genetic, and epigenetic levels have been well demonstrated using model plant Arabidopsis thaliana (A. thaliana). However, the mechanisms underlying RIBE in plants are not clear, especially lacking a comprehensive knowledge about the genes and biological pathways involved in the RIBE in plants. Materials and Methods: A high-density oligonucleotide probe-based cDNA microarray was used to analyze transcriptomic response in aerial leaf tissues of A. thaliana seedlings at 24 h after root exposure to 10 Gy of α-irradiation. Results: The root-localized irradiation resulted in up-regulated expressions of 238 genes and down-regulated expressions of 42 genes in bystander aerial tissues with a ≥ 2.0-fold difference and < 0.05 p-values. The high frequency of gene families for up-regulated expressions were glutathione S-transferases, cytochrome P450 enzyme, the ethylene response factor, and the multidrug and toxic compound extrusion efflux, and for down-regulated expressions was the later embryogenesis abundant protein. Moreover, there were 200 up-regulated genes and 183 down-regulated genes with 1.5–2.0-fold expression changes. Conclusion: In addition to the canonical IR-induced genes, some genes that are not previously linked to radiobiological effects were found to be involved in RIBE in plants.
منابع مشابه
Radiation Induced Bystander Effect
Introduction: Radiation effects observed in cells that are not irradiated are known as non-targeted effects. Radiation induced bystander effect (RIBE) as a kind of non-targeted effect has been introduced in recent years. RIBE occurs in unexposed cells which are related to adjacent or distant irradiated cells. RIBE contradict with "target theory" which necessitates radiation tr...
متن کاملRadiation Bystander Effects Mechanism
Introduction: Radiation Induced Bystander Effect (RIBE) which cause radiation effects in non-irradiated cells, has challenged the principle according to which radiation traversal through the nucleus of a cell is necessary for producing biological responses. What is the mechanism of this phenomenon? To have a better understanding of this rather ambiguous concept substantial number of original ...
متن کاملPolycomb-Mediated Gene Silencing in Arabidopsis thaliana
Polycomb group (PcG) proteins are conserved chromatin regulators involved in the control of key developmental programs in eukaryotes. They collectively provide the transcriptional memory unique to each cell identity by maintaining transcriptional states of developmental genes. PcG proteins form multi-protein complexes, known as Polycomb repressive complex 1 (PRC1) and Polycomb repressive comple...
متن کاملSignaling in Radiation-Induced Bystander Effects
Although radiation-induced bystander effects have been well described over the past decade, the mechanisms of the signaling processes involved in the bystander phenomenon remain unclear. In the present study, using the Columbia University charged particle microbeam, we found that mitochondrial DNA–depleted human skin fibroblasts (R) showed a higher bystander mutagenic response in confluent mono...
متن کاملBystander effects in radiation-induced genomic instability.
Exposure of GM10115 hamster-human hybrid cells to X-rays can result in the induction of chromosomal instability in the progeny of surviving cells. This instability manifests as the dynamic production of novel sub-populations of cells with unique cytogenetic rearrangements involving the "marker" human chromosome. We have used the comet assay to investigate whether there was an elevated level of ...
متن کاملمنابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ذخیره در منابع من قبلا به منابع من ذحیره شده{@ msg_add @}
عنوان ژورنال
دوره 17 شماره 3
صفحات 369- 377
تاریخ انتشار 2019-06
با دنبال کردن یک ژورنال هنگامی که شماره جدید این ژورنال منتشر می شود به شما از طریق ایمیل اطلاع داده می شود.
میزبانی شده توسط پلتفرم ابری doprax.com
copyright © 2015-2023