Cucumis sativus
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PROVIDER: PRJNA282765 | ENA |
REPOSITORIES: ENA
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Project description:Real-time quantitative PCR analysis of cucumber mitogen activated protein kinase cascade genes in various tissues
| PRJNA282764 | ENA
Project description:Purpose: Next-generation sequencing (NGS) has revolutionized systems-based analysis of gene expression profiles of cucumber under short-term chilling stress. The goals of this study are to transcriptome analysis of cucumber leaves under chilling stress. Methods: mRNA profiles of seedlings exposed to an air temperature of 6°C in the absence of light at 0, 2, 6, and 12 h were generated by deep sequencing, in triplicate, using Illumina Hiseq platform. The reference genome and gene model annotation files were downloaded from the genome website （http://cucurbitgenomics.org/）. An index of the reference genome was built using Bowtie v.2.2.3 and paired-end clean reads were aligned to the reference genome using TopHat v.2.0.12. qRT–PCR validation was performed using SYBR Green assays. Results: A total of 55.7 million clean reads was generated. Based on the threshold values of absolute value of log2 ratio ≥ 1 and FDR ≤ 0.05, a total of 2113 DEGs was identified at three time points (2, 6, and 12 h). A total of 30 genes was detected at all time points. The number of DEGs increased with time. In total, 100 TFs from 22 families in three subsets were detected. And 19 kinase families were identified in three subsets. The DEGs identified by RNA sequencing were confirmed by qRT-PCR analysis, indicating that the data were reliable. These findings provide information that can be useful for investigating the molecular mechanisms underlying the response to chilling stress in cucumber and other plants. Conclusions: The results presented here reveal changes in the transcriptome profile of cucumber in response to chilling stress. Exposure to a low temperature induced genes involved in hormone regulation, lipid metabolism, and photosynthesis, including NAC, WRKY, AP2/ERF, ERD, MYB as well as zinc finger TFs and protein kinases such as receptor-like protein kinase, MAPK, and CDK. Most TFs were upregulated whereas CDKs were downregulated. These findings provide information that can be useful for investigating the molecular mechanisms underlying the response to chilling stress in cucumber and other plants.
2018-08-20 | GSE111998 | GEO
Project description:Our previous studies have shown that exogenous ethylene (ETH) may induce plant adventitious root development in cucumber. In this study, transcriptome technique was used to explore the key genes in ETH-induced rooting. The results revealed that ETH regulated 1415 diferentially expressed genes (DEGs) during rooting, among which 687 DEGs were up-regulated and 728 DEGs were down-regulated. According to Kyoto encyclopedia of genes and genomes (KEGG) pathway analysis, the critical pathways involved in ETH-induced adventitious root development were selected for further study, including carbon metabolism [starch and sucrose metabolism, glycolysis / gluconeogenesis, citrate cycle (TCA cycle), oxidative phosphorylation, fatty acid biosynthesis and fatty acid degradation], secondary metabolite biosynthesis (phenylalanine metabolism and flavonoid biosynthesis) and plant hormone signal transduction. In carbon metabolism, ETH reduced t the expression of CsHK2, CsPK2 and CsCYP86A1, whereas enhanced the expression of CsBAM1 and CsBAM3. Moreover, ETH negatively regulated the transcript level of CsPAL and CsF3’M and positively mediated that of CsPAO in secondary metabolite biosynthesis pathway. Additionally, ETH could induce adventitious rooting by negatively regulating auxin and ETH signal transduction-related genes (CsLAX5, CsGH3.17, CsSUAR50 and CsERS) and positively regulating ABA and BR signaling transduction-related genes (CsPYL1, CsPYL5, CsPYL8, CsBAK1 and CsXTH3) . Furthermore, the results of real-time PCR about the mRNA levels of these genes were consistent with transcriptome results. Therefore, ETH may induce adventitious root development by regulating carbon metabolism-related genes, secondary metabolite biosynthesis-related genes and plant hormone signal transduction-related genes.
2021-11-30 | GSE189315 | GEO
Project description:Background. Ovary culture has been a useful way to generate double haploid (DH) plant in cucumber (Cucumis sativus L.). However, the rate of embryo induction and the ability for induced embryo to grow into normal embryo are quite low. Moreover, the s mechanism of cucumber embryogenesis remains ambiguous. In this study, the molecular basis for cucumber embryogenesis was explored to set up basis for a more efficient ovary culture method. Differentially expressed genes during embryogenesis process, including the early stages of embryo formation, embryo maturation and shoot formation, were investigated using transcriptomic sequencing. Methods. Based on the cytological observation of cucumber ovary culture, the ovary culture can be divided into three stages:early embryo development, embryo maturation (from pre-embryos to cotyledon embryos) and the shoot formation stage. six key time points were selected for transcriptome sequencing and analysis. Results. We firstly conducted cytological observations which suggest that cell enlargement is the symbol for gametophytes to switch to sporophyte development pathway during early embryogenesis stage. In this stage, RNA-seq revealed 3468 up-regulated genes, including hormone signal transduction genes, hormone response genes and stress-induced genes. The reported embryogenesis-related genes BBM, HSP90 and AGL were also actively expressed during this stage. The total 480 genes that function in protein complex binding, microtubule binding, tetrapyrrole binding, tubulin binding and other microtubule activities were continuously up-regulated during the embryo maturation stage, indicating that the cytoskeleton structure was continuously being built and maintained by the action of microtubule-binding proteins and enzyme modification during embryo development. In shoot formation stage, 1383 genes were up-regulated, which were mainly enriched in phenylpropanoid biosynthesis, plant hormone signal transduction, phenylalanine metabolism, and starch and sucrose metabolism. The shoot formation stage might be regulated by 6 transcription factors that contained a B3 domain, 9 genes in the AP2/ERF family and 2 genes encoded WUS homologous domain proteins. Conclusions. These findings offer a valuable framework for explaining the transcriptional regulatory mechanism underlying embryogenesis during cucumber ovary culture.
2020-03-30 | GSE147282 | GEO
Project description:Genotyping arrays are tools for high throughput genotyping, which is required in genome-wide association studies (GWAS). Since the first cucumber genome draft was reported, genetic maps were constructed mainly based on simple-sequence repeats (SSRs) or on combinations of SSRs and other sequence-related amplified polymorphism (SRAP). In this study we developed the first cucumber genotyping array which consisted of 32,864 single nucleotide polymorphisms (SNPs). These markers cover the cucumber genome every 2.1Kb and have parents/F1 hybridizations as a training set. The training set was validated with Fludigm technology and had 98% concordance. The application of the genotyping array was illustrated by constructed a genetic map of 600 cM in length based on recombinant inbred lines (RIL) population of a 9930XGy14 cross of which compromise of 11564 SNPs. The markers collinearity between the genetic map and genome references of the two parents estimated as R2=0.97. Moreover, this comparison supports a translocation in the beginning of chromosome 5 that occurred in the lineage of 9930 and Gy14 as well as local variation in the recombination rate. We also used the array to investigate the local allele frequencies along the cucumber genome and found specific region with segregation distortions. We believe that the genotyping array together with the training set would be a powerful tool in applications such as quantitative-trait loci (QTL) analysis and GWAS.
2015-05-01 | GSE57294 | GEO
Project description:We used Bio-Rad laboratories, lnc. PCR assay panel to analyze expression levels of MAPK genes under various stress conditions and plant hormone treatments. Cucumber plants of the ‘Jinyan No.4’ cultivar were reared in growth chambers at 28 ± 1 °C with a photoperiod of 16 h light/8 h dark and light intensity of 400 μmol m−2 s−1. Three-week-old seedlings were used for all abiotic and biotic treatments. For heat or cold treatment, the seedlings were subjected to 35 ± 1 °C or 4 ± 1 °C conditions, respectively. The samples for RNA extraction were collected at 0, 1, 2, 4, and 8 h after treatment. For dehydration treatment, the leaves of plants were sampled at 0, 2, 4, and 6 d after watering stopped. For disease treatment, Pseudoperonospora cubensis (P.cubensis) was used to infect the seedlings, and leaves were collected at 0, 1, 2, and 3 d after infection. For hormone treatments, the seedling leaves were sprayed with 100 mM methyl jasmonate (meJA) or 100 mM abscisic acid (ABA) and then sampled at 0, 1, 2, 4, and 8 h intervals. The experiment was designed to examine the transcription patterns of 58 MAPK cascade genes in cucumber in response to three different abiotic stresses (cold, heat, and drought), one biotic stress (Pseudoperonospora cubensis) and two (MeJA and ABA) plant hormone treatments.
2015-05-01 | E-GEOD-68436 | biostudies-arrayexpress
Project description:Trichomes are the hair-like structures that are widely present on the surface of aerial organs and function in plant defense against biotic and abiotic stresses. Previous studies focus on the single cell trichomes in Arabidopsis and cotton, or multicellular glandular trichomes in tomato, but the developmental process and molecular mechanisms controlling multicellular non-glandular trichome development are largely neglected. Here, we extensively characterized the fruit trichome (spine) development in wild type cucumber and in a tiny branched hair (tbh) mutant that contains a spontaneous mutation and has hairless foliage and smooth fruit surface. Our data indicated that cucumber trichome was multicellular and non-glandular, with no branches or endoreduplication. Further, the major feature of cucumber trichome development was spine base expansion. Transcriptome profiling through Digital Gene Expression indicated that meristem-related genes and transcription factors were implicated in the fruit spine development, and polarity regulators were upregulated during spine base expansion. qRT-PCR verified the reliability of our RNA-SEQ data, and in situ hybridization confirmed the enriched expression of meristem regulators CUP-SHAPED COTYLEDON3 (CUC3) and STM (SHOOT MERISTEMLESS) , as well as the abaxial identity gene KANADI (KAN) in cucumber fruit spine. Together, our results suggest a distinct regulatory pathway involving meristem genes and polarity regulators in multicellular trichome development in cucumber. Using Digital Gene Expression technology to compare the genome-wide gene expression profiles in the fruit spines of wild type cucumber and the tbh mutant, as well as the fruit spines on fruits of 0.5cm and 1.6cm long, repectively. Two biological repelicates were generated for each tissue.
2014-07-01 | E-GEOD-49607 | biostudies-arrayexpress
Project description:The plant vascular system is essential for the enlarged plant stature and successful colonizzation the land by delivering resources throughout the plants and providing mechanical support. Despite several regulators of vascular patterning have been reported, how vascular system mediates stress resistance remain largely unknown. Here we identified a CsIND transcription factor that is specifically expressed in the xylem and phloem tissues in cucumber. Knock down of CsIND by RNAi lead to dwarf plants with enlarged or disorganized vascular systems in all aerial organs. The content of both auxin and jasmonic acid were increased in the CsIND-RNAi lines. Transcriptome profiling by RNA-Seq hints CsIND-regulated gene networks for defense response and vascular development. Biochemical analyses verified that CsIND directly binds to well-known vascular regulators including CsCCR1, CsMYB116, CsYAB5, CsBP and CsAUX, and physically interacts with dorsiventral patterning genes CsKAN2 and CsYAB5. Further, CsIND-RNAi plants displayed significantly enhanced tolerance to nitrogen dificency and resistance to cucumber downy mildew. Therefore, CsIND regulates vascular formation and resistance to biotic and abiotic stresses in cucumber, through the combinarory interactions with well-known vascular regulaors and hormone metabolism and signaling pathways.
2019-09-02 | GSE86496 | GEO
Project description:Ethylene, as a signaling hormone molecule, is proved to have essential role in the process of root development. In the present study, cucumber (Cucumis sativus L.) seedlings were employed to estimate differentially expressed proteins (DEPs) during the adventitious rooting using iTRAQ technique and proteomics analysis. Out of the 5014 DEPs, 115 DEPs were considered as identified proteins, and among them, 24 DEPs are interesting proteins abundance.
2020-01-15 | PXD016444 | Pride
Project description:Trichomes are the hair-like structures that are widely present on the surface of aerial organs and function in plant defense against biotic and abiotic stresses. Previous studies focus on the single cell trichomes in Arabidopsis and cotton, or multicellular glandular trichomes in tomato, but the developmental process and molecular mechanisms controlling multicellular non-glandular trichome development are largely neglected. Here, we extensively characterized the fruit trichome (spine) development in wild type cucumber and in a tiny branched hair (tbh) mutant that contains a spontaneous mutation and has hairless foliage and smooth fruit surface. Our data indicated that cucumber trichome was multicellular and non-glandular, with no branches or endoreduplication. Further, the major feature of cucumber trichome development was spine base expansion. Transcriptome profiling through Digital Gene Expression indicated that meristem-related genes and transcription factors were implicated in the fruit spine development, and polarity regulators were upregulated during spine base expansion. qRT-PCR verified the reliability of our RNA-SEQ data, and in situ hybridization confirmed the enriched expression of meristem regulators CUP-SHAPED COTYLEDON3 (CUC3) and STM (SHOOT MERISTEMLESS) , as well as the abaxial identity gene KANADI (KAN) in cucumber fruit spine. Together, our results suggest a distinct regulatory pathway involving meristem genes and polarity regulators in multicellular trichome development in cucumber.
2014-07-01 | GSE49607 | GEO