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ABA is required for plant acclimation to a combination of salt and heat stress

ABSTRACT: We examined changes in steady-state transcript level in leaves of Arabidopsis plants subjected to salinity, heat stress and their combination by a transcriptome analysis of leaves.

ORGANISM(S): Arabidopsis thaliana

PROVIDER: GSE72806 | GEO | 2016/10/24

SECONDARY ACCESSION(S): PRJNA295091

REPOSITORIES: GEO

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ABA is required for plant acclimation to a combination of salt and heat stress

Project description:We examined changes in steady-state transcript level in leaves of Arabidopsis plants subjected to salinity, heat stress and their combination by a transcriptome analysis of leaves. mRNA profiles of Arabidopsis plants subjected to salinity, heat stress and their combination were generated by RNA-Seq analysis, in triplicate, using an Illumina HiSeq2000.

2016-10-24 | E-GEOD-72806 | biostudies-arrayexpress

ABA Is Required for Plant Acclimation to a Combination of Salt and Heat Stress.

Project description: Not available

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Transcrition profiling of shoots from related model and cultivated Lotus plant species following salt acclimation

Project description:Many plant researchers have applied genomic tools to model species to identify abiotic stress responsive genes that might be useful for improving stress tolerance in crops. However, it is unclear whether this translational approach will be successful given the complexity of abiotic stress tolerance. We carried out a functional genomic (ionomic, transcriptomic and metabolomic) comparison of three model and three forage species of the genus Lotus with varying tolerance to salinity. Transcriptome analysis showed that about 60 % of expressed genes were responsive to salt treatment in one or more of the six species tested, but less than 1 % was responsive in all genotypes. Therefore, genotype-specific responses overshadowed conserved transcriptional responses to salinity and represent an impediment to translational genomics. Fortunately, 'triangulation' from multiple species enabled the identification of a core set of conserved and tolerant-specific responses that could provide durable tolerance across genotypes.

2010-08-10 | E-MEXP-2344 | biostudies-arrayexpress

An Arabidopsis Nucleoporin NUP85 modulates plant responses to ABA and salt stress

Project description:Several nucleoporins in the nuclear pore complex (NPC) have been reported to be involved in abiotic stress responses in plants. However, the molecular mechanism of how NPC regulates abiotic stress responses, especially the expression of stress responsive genes remains poorly understood. From a forward genetics screen using an abiotic stress-responsive luciferase reporter (RD29A-LUC) in the sickle-1 (sic-1) mutant background, we identified a suppressor caused by a mutation in NUCLEOPORIN 85 (NUP85), which exhibited reduced expression of RD29A-LUC in response to ABA and salt stress. Consistently, the ABA and salinity induced expression of several stress responsive genes such as RD29A, COR15A and COR47 was significantly compromised in nup85 mutants and other nucleoporin mutants such as nup160 and hos1. Subsequently, Immunoprecipitation and mass spectrometry analysis revealed that NUP85 is potentially associated with HOS1 and other nucleoporins within the nup107-160 complex, along with several mediator subunits. We further showed that there is a direct physical interaction between MED18 and NUP85. Similar to NUP85 mutations, MED18 mutation was also found to attenuate expression of stress responsive genes. Taken together, we not only revealed the involvement of NUP85 and other nucleoporins in regulating ABA and salt stress responses, but also uncovered a potential relation between NPC and mediator complex in modulating the gene expression in plants.

2018-03-01 | GSE99677 | GEO

Transcriptome profiling of abiotic responses to heat, cold, salt, and osmotic stress of Capsicum annuum L.

Project description:We sought to investigate the scope of transcriptome analyses of peppers subjected to four major environment stresses (heat, cold, drought, and salinity). For this, at the six-true-leaf stage, plants were subjected to a temperature of 10°C or 40°C to mimic cold or heat stress, respectively. For salinity stress, plants were treated with 50 mL of a 400 mM NaCl solution; for osmotic stress, the peppers were treated with 50 mL of 400 mM mannitol. For RNA-seq library construction, the third or fourth leaves from four plants were harvested per replicate at 0, 3, 6, 12, 24, and 72 h after treatment. A total of 204.68 Gb of transcriptome data were generated using transcriptome analysis pipelines consisting of quality control, quantification, and differential gene expression analyses. A hierarchical clustering of gene expression data were used to infer the quality of the RNA-seq data and the characteristics of samples in each treatment. The extensive transcriptome data obtained will provide valuable information for future studies of crops exposed to abiotic stresses.

2019-06-18 | GSE132824 | GEO

Transcription profiling of Lotus japonicus grown under different salt acclimation regimes

Project description:Model legume Lotus japonicus was subjected to non-lethal long-term salinity and profiled at the transcriptomic level. Three independent experiments were performed, testing two experimental designs: a traditional gradual acclimation following a step-wise increase of salt concentration and an initial acclimation approach (ia).

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ABA is required for the accumulation of APX1 and MBF1c during a combination of water deficit and heat stress.

Project description: Not available

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Acclimation and stress response of Prochlorococcus to low salinity

Project description:Prochlorococcus is an obligate marine microorganism which are dominant autotroph in tropical and subtropical central oceans. However, what is the low salinity boundary and how Prochlorococcus would response to low salinity exposure is still unknown. In this study, we first tested the growing salinity range of two Prochlorococcus strains, NATL1A and MED4, and then compared the global transcriptome of their low salinity acclimated cells and cells growing in normal seawater salinity. We found that MED4 could be acclimated in the lowest salinity of 25% and NATL1A could be acclimated in the lowest salinity of 28%. Measurement of the effective quantum yield of PSII photochemistry (Fv/Fm) indicated that both strains were stressed when growing in salinity lower than 34%. The transcriptomic response of NATL1A and MED4 were approximately different, with much more genes having changed transcript abundance in NATL1A than in MED4. To cope with low salinity, NATL1A downregulated the transcript of most genes involved in translation, ribosomal structure and biogenesis, while MED4 upregulated those genes. Moreover, low salinity acclimated NATL1A cells suppressed ATP-producing genes and induced the expression of photosynthesis related genes, while low salinity acclimated MED4 upregulated ATP-producing genes and downregulated photosynthesis related genes. These results indicate that the response to low salinity stress of different Prochlorococcus strains could be distinct. The study provided the first glimpse into the growing salinity range of Prochlorococcus cells and their global gene expression changes due to low salinity stress.

2022-02-02 | GSE195946 | GEO

An Arabidopsis Nucleoporin NUP85 modulates plant responses to ABA and salt stress.

Project description: Not available

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Combined Proteome and Transcriptome Analysis of Heat-Primed Azalea Reveals New Insights Into Plant Heat Acclimation Memory.

Project description: Not available

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