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Rice A20/AN1 zinc-finger containing stress-associated proteins (SAP1/11) and a receptor-like cytoplasmic kinase (OsRLCK253) interact via A20 zinc-finger and confer abiotic stress tolerance in transgenic Arabidopsis plants

ABSTRACT: The inbuilt mechanisms of plant survival have been exploited for improving tolerance to abiotic stresses. We have investigated the subcellular interactions of rice stress-associated proteins (SAPs) using yeast two-hybrid and FRET approaches and found that A20 domain mediates the interaction of OsSAP1 with self, its close homolog OsSAP11, and a rice receptor-like cytoplasmic kinase, OsRLCK253. Such interactions between OsSAP1/11 and with OsRLCK253 occur at nuclear membrane, plasma membrane and in nucleus. Functionally, both OsSAP11 and OsRLCK253 could improve the water-deficit and salt stress tolerance in transgenic Arabidopsis plants via a signaling pathway affecting the expression of several common endogenous genes. The yield in transgenic plants is also protected indicating the agronomic relevance of OsSAP11 and OsRLCK253 in conferring abiotic stress tolerance. Arabidopsis transgenic plants expressing rice genes OsSAP11 and OsRLCK253 were compared with untransformed plants at seedling level

ORGANISM(S): Arabidopsis thaliana

SUBMITTER: Akhilesh Tyagi

PROVIDER: E-GEOD-27861 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Rice A20/AN1 zinc-finger containing stress-associated proteins (SAP1/11) and a receptor-like cytoplasmic kinase (OsRLCK253) interact via A20 zinc-finger and confer abiotic stress tolerance in transgenic Arabidopsis plants

Project description:The inbuilt mechanisms of plant survival have been exploited for improving tolerance to abiotic stresses. We have investigated the subcellular interactions of rice stress-associated proteins (SAPs) using yeast two-hybrid and FRET approaches and found that A20 domain mediates the interaction of OsSAP1 with self, its close homolog OsSAP11, and a rice receptor-like cytoplasmic kinase, OsRLCK253. Such interactions between OsSAP1/11 and with OsRLCK253 occur at nuclear membrane, plasma membrane and in nucleus. Functionally, both OsSAP11 and OsRLCK253 could improve the water-deficit and salt stress tolerance in transgenic Arabidopsis plants via a signaling pathway affecting the expression of several common endogenous genes. The yield in transgenic plants is also protected indicating the agronomic relevance of OsSAP11 and OsRLCK253 in conferring abiotic stress tolerance.

2011-05-01 | GSE27861 | GEO

Expression data from leaves of rice plants overexpressing the OsCPK4 gene and control plants(empty vector) in normal conditions

Project description:The OsCPK4 gene is a member of the complex gene family of the Calcium-dependent protein kinases (CPKs) in rice. Expression of OsCPK4 is induced by high salinity, drought and the phytohormone abscisic acid. The OsCPK4 protein localizes to the plasma membrane. Transgenic rice overexpressing OsCPK4 enhances tolerance to salt and drought stress, the transgenic plants having stronger water-holding capability than control plants. Microarray analysis of OsCPK4 rice plants revealed up-regulation of genes involved in metabolism, particularly lipid metabolism, as well as genes involved in oxidative stress and redox control. Meanwhile, OsCPK4 overexpression has no impact on the expression of the well-characterized abiotic stress-associated transcription factors (i.e. DREB and NAC), or the typical salt and drought-inducible genes (i.e. LEA genes, including Dehydrin genes). Under salt stress conditions, the OsCPK4 transgenic lines showed lesser membrane lipid peroxidation as compared to control plants, indicating that OsCPK4 rice plants have a better capacity to prevent oxidative damage in cellular membrane lipids. Collectively, our data suggest that OsCPK4-mediated processes protect the plant cell from uncontrolled redox reactions affecting membrane functions, which, in turn, results in salt and drought tolerance. OsCPK4 shows great promise for genetic improvement of tolerance to abiotic stress in rice.

2014-07-03 | GSE52353 | GEO

Expression data from transgenic rice with anti-OsPDCD5

Project description:Environmental stresses influence the growth of plants and the productivity of crops. Salinity is one of the most important abiotic stresses for agricultural crops. PCD is induced by various biotic and abiotic stresses in algae and higher plants, including high salinity treatment. OsPDCD5, an ortholog to mammalian-programmed cell death 5, is up-regulated under low temperature and NaCl treatments. We found that the transgenic rice which constitutively expressed anti-OsPDCD5 increased salt stress tolerance in unique ways. By using the Rice Genome Microarray, we identiﬁed target genes that were regulated in transgenic rice plants by anti-OsPDCD5.

2011-11-01 | GSE28209 | GEO

Expression data from transgenic rice with anti-OsPDCD5

Project description:Environmental stresses influence the growth of plants and the productivity of crops. Salinity is one of the most important abiotic stresses for agricultural crops. PCD is induced by various biotic and abiotic stresses in algae and higher plants, including high salinity treatment. OsPDCD5, an ortholog to mammalian-programmed cell death 5, is up-regulated under low temperature and NaCl treatments. We found that the transgenic rice which constitutively expressed anti-OsPDCD5 increased salt stress tolerance in unique ways. By using the Rice Genome Microarray, we identi?ed target genes that were regulated in transgenic rice plants by anti-OsPDCD5. Leaf tissues of 2-week-old transgenic and nontransgenic seedlings (10 plants each) before 200mM NaCl treatment, 20mins and 3 hours after 200mM NaCl treatment, respectively, were selected.

2011-11-01 | E-GEOD-28209 | biostudies-arrayexpress

Transcription profiling of rice indica after glycinebetaine-induced water-stress tolerance in codA-expressing transgenics

Project description:Glycinebetaine-induced water-stress tolerance in codA-expressing transgenic indica rice is associated with up-regulation of several stress responsive genes. Rice (Oryza sativa L.), a non-accumulator of glycinebetaine (GB), is highly susceptible to abiotic stress. Transgenic rice with chloroplast-targeted choline oxidase encoded by the codA gene from Arthrobacter globiformis has been evaluated for inheritance of transgene up to R5 generation and water-stress tolerance. During seedling, vegetative and reproductive stages, transgenic plants could maintain higher activity of photosystem II and they show better physiological performance, e.g. enhanced detoxification of reactive oxygen species compared to wild-type plants under water-stress. Survival rate and agronomic performance of transgenic plants is also better than wild-type following prolonged water-stress. Choline oxidase converts choline into glycinebetaine and H2O2 in a single step. It is possible that H2O2 /GB might activate stress response pathways and prepare transgenic plants to mitigate stress. To check this possibility, microarray-based transcriptome analysis of transgenic rice has been done. It unraveled altered expression of many genes involved in stress responses, signal transduction, gene regulation, hormone signaling and cellular metabolism. Overall, 165 genes show more than 2 folds up-regulation at P value <0.01 in transgenic rice. Out of these, at least 50 genes are known to be involved in plant stress response. Exogenous application of H2O2 or GB to wild-type plants also induces such genes. Our data show that metabolic engineering for GB is a promising strategy for introducing stress tolerance in crop plants and which could be imparted, in part, by H2O2- and/or GB-induced stress response genes. Experiment Overall Design: Rice (Oryza sativa L.), transgenic plants expressing codA gene from Arthrobacter globiformis were compared with untransformed plants at seedling level

2009-06-24 | E-GEOD-15448 | biostudies-arrayexpress

Glycinebetaine-induced water-stress tolerance in codA-expressing transgenic indica rice

2009-06-03 | GSE15448 | GEO

Transcriptome analysis to uncover potential roles of a barley ASR gene in stress tolerance

Project description:Whole genome microarray expression profiling was used to identify potential downstream targets and understand cellular processes regulated by a plant ASR protein, particularly HvASR5 from barley, involved in abiotic stress tolerance in cereals. When expressed ectopically, HvASR5 is able to improve growth performance of rice plants under stress conditions. For this experiment, leaf samples from transgenic rice lines overexpressing HvASR5 were compared to wild-type plants. HvASR5 can up-regulate the expression of a distinct set of genes associated with stress responses, metabolic processes, as well as reproduction and development.

2019-11-01 | GSE123128 | GEO

Heat stress responsive HvHSFA2e gene regulates the heat and drought tolerance in barley through modulation of phytohormone and secondary metabolic pathways

Project description:High temperature and drought are the primary yield-limiting environmental constraints for staple food crops. Heat shock transcription factors (HSF) terminally regulate the plant abiotic stress responses to maintain growth and development under extreme environmental conditions. HSF genes of Subclass A2 predominantly express under heat stress (HS) and activate the transcriptional cascade of defense-related genes. In this study, a highly heat-inducible HSF, HvHSFA2e was constitutively expressed in barley (Hordeum vulgareL.) to investigate its role in abiotic stress response and plant development. Transgenic barley plants displayed enhanced heat and drought tolerance in terms of increased chlorophyll content, improved membrane stability, reduced lipid peroxidation, and less accumulation of ROS in comparison to wild-type (WT) plants. Transcriptome analysis revealed that HvHSFA2e positively regulates the expression of abiotic stress-related genes encoding HSFs, HSPs, and enzymatic antioxidants, contributing to improved stress tolerance in transgenic plants. The major genes of ABA biosynthesis pathway, flavonoid, and terpene metabolism were also upregulated in transgenics. Our findings show that HvHSFA2e mediated upregulation of heat-responsive genes, modulation in ABA and flavonoid biosynthesis pathways enhance drought and heat stress tolerance.

2023-10-02 | GSE241562 | GEO

Over-expression of MBF1c enhances stress tolerance

Project description:Multiprotein bridging factor 1c MBF1c (At3g24500) is a stress-response transcription co-activator. To test the function of MBF1c, we over-expressed it in transgenic Arabidopsis plants using the 35S-CaMV promoter. T4 seeds form 3 independent lines were tested for their tolerance to biotic and abiotic stress conditions. Constitutive expression of MBF1c in Arabidopsis enhanced the tolerance of transgenic plants to bacterial infection, salinity, heat and osmotic stress. Moreover, the enhanced tolerance of transgenic plants to osmotic and heat stress was maintained even when these two stresses were combined. The expression of MBF1c in transgenic plants augmented the accumulation of a number of sugars and defense transcrtipts in response to heat stress. Transcriptome profiling and inhibitor studies suggest that MBF1c expression enhances the tolerance of transgenic plants to heat and osmotic stress by partially activating, or perturbing, the ethylene-response signal transduction pathway. MBF1 proteins could be used to enhance the tolerance of plants to different abiotic stresses. Suzuki et al., 2005 Plant Physiology, submitted. Experimenter name = Ron Mittler Experimenter phone = 1-775-784-1384 Experimenter fax = 1-775-784-1650 Experimenter department = Dept. of Biochemistry Experimenter institute = University of Nevada Experimenter address = MS200 Experimenter address = Reno Experimenter address = Nevada Experimenter zip/postal_code = 89557 Experimenter country = USA Keywords: genetic_modification_design; stimulus_or_stress_design

2006-08-15 | GSE5539 | GEO

The wheat C2H2 zinc finger protein TaZFP13D modulates the expression of chloroplast-related genes, improves growth and drought stress tolerance.

Project description:Background Maintaining global food security in the context of climate changes is an important challenge in the next century. Improving abiotic stress tolerance of major crops, like wheat, can contribute to this goal. Therefore, new genes improving tolerance to abiotic stresses, like drought, are needed to support breeding programs aimed at producing more adapted cultivars. Recently, we screened five wheat Zinc Finger Proteins (TaZFPs) and identified TaZFP13D as a new gene improving water-stress tolerance. However, a more detailed characterization of this gene is required to better evaluate its potential in drought tolerance and to decipher the underlying molecular basis. Results We used the Barley Stripe Mosaic Virus to up- or down-regulate TaZFP13D expression in wheat. Overexpression of TaZFP13D under well-watered conditions enhances growth as indicated by improved biomass. Exposing plants to a severe drought stress revealed that TaZFP13D strongly increases survival rate and stress recovery. In addition, TaZFP13D reduces drought-induced oxidative damages, at least in part by improving key antioxidant enzymes activity. Conversely, down-regulation of TaZFP13D decreases drought tolerance and protection against drought-induced oxidative damages. RNA-seq-based transcriptome analysis showed that many genes regulated by TaZFP13D were previously shown to improve drought tolerance, while many others are related to the photosynthetic electron transfer chain and are proposed to improve photosynthesis efficiency and chloroplast protection against ROS damages. Conclusion This study highlights the important role of TaZFP13D in wheat drought tolerance, contributes to unravel the complex regulation governed by TaZFPs, and provides a useful marker to select more drought tolerant wheat cultivars.

2023-03-08 | GSE226842 | GEO

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