A network of rice genes associated with stress response and seed development

Abstract

We used a systematic approach to build a network of genes associated with developmental and stress responses in rice by identifying interaction domains for 200 proteins from stressed and developing tissues, by measuring the associated gene expression changes in different tissues exposed to a variety of environmental, biological, and chemical stress treatments, and by localizing the cognate genes to regions of stress-tolerance trait genetic loci. The integrated data set suggests that similar genes respond to environmental cues and stresses, and some may also regulate development. We demonstrate that the data can be used to correctly predict gene function in monocots and dicots. As a result, we have identified five genes that contribute to disease resistance in Arabidopsis.

Arsenic stress affects the expression profile of genes of 14-3-3 proteins in the shoot of mycorrhiza colonized rice

“…OsGF14b, OsGF14c, OsGF14e and OsGF14f was observed (Chen et al 2006) in response to plant-pathogen interaction, defence signalling compounds and diverse abiotic stimuli. Furthermore, the transcripts of three rice 14-3-3 protein genes (OsGF14b, OsGF14c and OsGF14e) were induced in response to several environmental stresses including drought (Cooper et al 2003). These evidences suggest that 14-3-3 proteins are induced in a variety of stresses thus supporting the notion that they are important for stress response regulation.…”

“…ATPase and 14-3-3 proteins. Our current study expands upon the previous findings of the rice 14-3-3 family (Zhang et al 2001;Cooper et al 2003;Liu et al 2004;Chen et al 2006) and would serve as a starting point to explore their functions in mycorrhiza mediated As stress response mechanisms.…”

“…(Cooper et al 2003;Roberts 2003;Chen et al 2006;Xu et al 2012b). In this study, we used a real-time RT-PCR in order to investigate the effect of As stress on the expression profile of 14-3-3 protein genes in the shoot of NCo and Co rice plants.…”

“…3). OsGF14c is shown to be associated with the ATPasesynthase complexes in the thylakoid, plasma, and vacuolar membranes and to be involved in plant stress responses (Cooper et al 2003). An up-regulation of OsGF14c in Co plants under As stress, in our study, indicates that it might be an important component of mycorrhiza induced signalling pathway and stress tolerance mechanism under As stress.…”

HORMESIS: Antecedent phenomena for adaptation to low doses of toxic agents

“…Bunun en gü-zel örneklerinden biri; zehirli bir gaz olan karbonmonoksitin (CO) sinir hücrelerinin haberleşme-sinde, kan damarlarındaki akış rahatlığının sağlamasında, selenyum gibi ağır bir metalin ise evrimsel süreç içinde enzimlerin fonksiyonunu güçlendirmek için kullanılmasıdır. Selenyum insan dahil, bir çok organizmanın sağlıklı yaşamasında görev almaktadır (15,16). Ayrıca bunun dışında hücreye yüksek dozları toksik olan fakat evrimsel sü-reçte adaptasyonla hücreye yarar sağlayan diğer ajanlar tablo 2'de verilmiştir.…”