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Transcriptome analysis of cucumber response to nitrogen deficiency

ABSTRACT: Nitrogen is the most important mineral nutrient of plant. As a worldwide and economically important vegetable, cucumber (Cucumis sativus L.) has a strong nitrogen-dependence. We took whole transcriptome sequencing approach to compare the gene expression profiles of cucumber leaves and roots grown under sufficient or insufficient nitrate supply. Analysis of the transcriptome data revealed that the root and leaf adapt different response mechanisms to long-term nitrogen deficiency. Photosynthesis and carbohydrate biosynthetic process were pronouncedly and specifically reduced in leaf, while the ion transport function, cell wall and phosphorus-deficiency response function seem systematically down-regulated in root. Genes in nitrogen uptake and assimilation are decreased in root, but some are increased in leaf under nitrogen deficiency. Several lines of evidence suggest that the altered gene expression networks support the basic cucumber growth and development likely through successful nitrogen remobilization involving in the induced expression of genes in ABA and ethylene pathways.

ORGANISM(S): Cucumis sativus

PROVIDER: GSE46678 | GEO | 2015/05/07

SECONDARY ACCESSION(S): PRJNA201489

REPOSITORIES: GEO

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Transcriptome analysis of cucumber response to nitrogen deficiency

Project description:Nitrogen is the most important mineral nutrient of plant. As a worldwide and economically important vegetable, cucumber (Cucumis sativus L.) has a strong nitrogen-dependence. We took whole transcriptome sequencing approach to compare the gene expression profiles of cucumber leaves and roots grown under sufficient or insufficient nitrate supply. Analysis of the transcriptome data revealed that the root and leaf adapt different response mechanisms to long-term nitrogen deficiency. Photosynthesis and carbohydrate biosynthetic process were pronouncedly and specifically reduced in leaf, while the ion transport function, cell wall and phosphorus-deficiency response function seem systematically down-regulated in root. Genes in nitrogen uptake and assimilation are decreased in root, but some are increased in leaf under nitrogen deficiency. Several lines of evidence suggest that the altered gene expression networks support the basic cucumber growth and development likely through successful nitrogen remobilization involving in the induced expression of genes in ABA and ethylene pathways. cucumber leaf and root mRNA of 28-day after sowing nitrogen deficiency and sufficiency deep sequencing, using Illumina HiSeq 2000

2015-05-07 | E-GEOD-46678 | biostudies-arrayexpress

SPATULA and ALCATRAZ confer fruit cavity and female sterility via mediating transmitting tract development in cucumber

Project description:The successful fusion of sperms and eggs need firstly the reception of pollens by stigmatic papillae, and then the unobstructed transmitting tract (TT) providing an extension channel for pollen tubes carrying with sperm cells. However, the genes involved in transmitting tract specification and cavity formation in cucumber remained largely unknown. Here, we characterized the bHLH gene, Cucumis sativus SPATULA (CsSPT) and its redundant function with Cucumis sativus ALCATRAZ (CsALC) in TT development and stigma convergence in cucumber.

2022-07-06 | GSE186397 | GEO

Identification of candidate genes related to astringency in cucumber via RNA-seq based transcriptome profiling

Project description:Cucumber (Cucumis sativus L.) is one of the most important fruit vegetable crops and is widely grown worldwide (FAO STAT 2016, http://faostat3.fao.org). Astringency greatly affects the flavor quality of cucumber fruits and can be irritating due to the unpleasant oral sensation it causes. However, there are no available report addressing the molecular mechanisms driving the development of cucumber fruit astringency at the transcriptome level. A few relatively basic research efforts have been carried out in our previous studies. In this study, genome-wide analysis of gene expression in the highly astringent cucumber inbred line ‘YB’ was performed using RNA-seq. The aims of this research were to identify the genes responsible for fruit astringency development and to provide new insights into the mechanism underlying the synthesis of astringent compounds in cucumber fruits.

2018-12-01 | GSE112666 | GEO

Proteomic Analysis Reveals Key Proteins Involved in Ethylene-Induced Adventitious Root Development in Cucumber (Cucumis sativus L.)

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

Grafting changed silicon metabolism and expression of bloom-forming related genes of cucumber pericarp

Project description:Cucumber (Cucumis sativus L.) is an economically important vegetable cultivated all over the world. Grafting can produce bloomless or sparse-bloom cucumber, which is welcomed by increasing consumers. Bloom granule is tine glandular hair, which is hard and rare studied on its formation and related genes. Mutifunctional RNA-seq is a recently developed analytical approach for transcriptome profiling via high-throughput sequencing and has been recently applied to a wide variety of organisms, which provide us reliable technical means detect bloom formation and related genes. In this study, we chose a cucumber inbred line (Shannong No.5) and two pumpkin rootstock lines as materials, and constructed four tested cucumbers, grew plants in “Yamazaki cucumber nutrient solution formula” prepared by deionized water, treated plants with or without 1.7mM potassium silicate 2 hours before collecting pericarp. Each treatment were duplicated twice.16 cDNA libraries were constructed from pericarp of a cucumber inbred line (own-rooted cucumber), C/C (self-grafted cucumber), M/C (More bloom, cucumber grafted onto “3225” rootstock) and L/C(Less bloom, cucumber grafted onto “3212” rootstock). We obtained 17,215,769~17,529,047 high quality reads, and 18,804~19,358 genes from each sample. All reads can be mapped to the cucumber genome (Version 2). By RPKM comparing, we got 38 comparing combinations with differentially expressed genes (DEGs), obtained 38 significantly expressed combinations by FDR≤0.001 and the absolute value of log2Ratio≥1 as the thresholds. These results suggest that there are many differences and genes expression mode among effects of grafting or added silicon. This study addresses a preliminary analysis and offers a foundation for future genomic research in the bloom formation of cucumber.

2020-04-02 | GSE79829 | GEO

A Functional Allele of CsFUL1 Regulates Fruit Length through Repressing CsSUP and Inhibiting Auxin Transport in Cucumber

Project description:Cucumber (Cucumis sativus L.) is an important vegetable crop bearing fleshy pepo fruits that harvested immature. The fruit length is one of the most important agricultural traits that directly determine the fruit yield and affects fruit quality, but the regulatory mechanism of fruit length variation remains elusive. Here we found a FRUITFULL-like MADS-box gene CsFUL1 functions as a key repressor for fruit length regulation in cucumber. The expression of CsFUL1 is highly enriched in male flowers and fruits, and negatively correlated with fruit length in different cucumber lines. Notably, a key SNP in CsFUL1 was selected during cucumber domestication for long fruit. Ectopic expression of CsFUL1 was unable to rescue the indehiscent fruit phenotype of ful-1 in Arabidopsis. Overexpression of CsFUL1 resulted in increased floral organs and reduced fruit length, whereas knockdown of CsFUL1 led to elongated fruit in cucumber. Transcriptome and biochemical analyses showed that CsFUL1 regulates fruit length through two pathways: one by inhibiting the PIN-FORWED (PIN1/7)-mediated auxin transport and thus downregulates auxin related genes in the fruit, and the other by forming a tetramer with other MADS-box genes to repress the CsSUP-mediated cell division and cell expansion. In addition, we found that CsFUL1 promotes locule number variation through the classical CsWUS-CsCLV pathway. Our findings uncover the regulatory commonality and specificity during development of different fruit types, and provide an important candidate gene to customize fruit length during cucumber breeding.

2020-03-28 | GSE103592 | GEO

Analysis of protein regulation in cucumber leaves after Corynespora cassiicola inoculation: a proteomic approach

Project description:Corynespora leaf spot (CSL), caused by Corynespora cassiicola, has become one of the most important foliar diseases of cultivated cucumber. However, the defense mechanisms of cucumber plants in response to C. cassiicola are still poorly understood. Here, proteins from resistant plants were analyzed using isobaric tags for relative and absolute quantification (iTRAQ). A total of 286 differentially expressed proteins were identified (P<0.05, ratio>1.2 or <0.83) at 6 and 24 h after pathogen inoculation in the resistant cucumber cultivar Jinyou 38. Some of the early responses to C. cassiicola infection were revealed, and four vital clues regarding the resistance of Cucumis sativus to cucumber CLS were discovered. First, the proteomic approach revealed the modulation of signaling pathways in resistant cucumber plants in response to C. cassiicola infection. Second, the plant immune system recognizes the pathogen and initiates the expression of basal immune response proteins, including those related to defense and stress responses, signal transduction, cell metabolism and redox regulation. Third, the common stress pathways were activated by C. cassiicola; in particular, mildew resistance locus O (MLO) proteins played a crucial role in the prevention of CLS. Fourth, the rapid activation of the carbohydrate and secondary metabolic pathways, the modification and reinforcement of cell walls, and the adjustment of the apoplectic environment to high-stress conditions were crucial in cucumber resistance to CLS disease. Overall, our data increase the knowledge of incompatible interactions between plants and pathogens and provide new insight into the contribution of molecular processes in cucumber to disease resistance.

2019-09-26 | PXD012903 | Pride

Comparative proteomic analysis provides novel insights into the complex responses to Pseudoperonospora cubensis infection of cucumber (Cucumis sativus L.)

Project description:Cucumber (Cucumis sativus L.) is an economically important vegetable crop distributed in over 80 countries. Downy mildew (DM) caused by the obligate oomycete Pseudoperonospora cubensis is especially destructive in cucumber production. So far, few studies on the changes in proteomes during the P. cubensis infection have been performed. Using a newly developed TMT-LC-MS/MS analysis, the proteomes of DM-resistant variety ‘ZJ’ and DM-susceptible variety ‘SDG’ under the P. cubensis infection were investigated. In total, 6400 proteins were identified, 5629 of which were quantified. The differential accumulated proteins (DAPs) exhibited various biological functions and diverse subcellular localizations. KEGG enrichment analysis showed that various metabolic pathways were significantly altered under the P. cubensis infection, such as terpenoid backbone biosynthesis, and selenocompound metabolism in ZJ, and starch and sucrose metabolism in SDG. Most of the enzymes associated with terpenoid backbone synthesis were significantly accumulated in ZJ rather than in SDG, suggesting that pathogen-induced terpenoids accumulation might play an important role in the resistance against P. cubensis infection. Furthermore, a number of pathogenesis-related proteins and heat shock proteins were identified as DAPs, suggesting that DM resistance was controlled by a complex network. Our data allowed us to identify and screen more potential proteins related to the DM resistance.

2019-11-12 | PXD010844 | Pride

Comparative transcriptomic analysis reveals the roles of microtubule-related genes and transcription factors in fruit length regulation in cucumber (Cucumis sativus)

Project description:Cucumber (Cucumis sativus L.) fruit is a type of fleshy fruit that is harvested immaturely. Early fruit development directly determines the final fruit length and diameter, and consequently the fruit yield and quality. Different cucumber varieties display huge variations of fruit length, but how fruit length is determined at the molecular level remains poorly understood. To understand the genes and gene networks that regulate fruit length in cucumber, high throughout RNA-seq data were used to compare the transcriptomes of early fruit from two near isogenic lines with different fruit lengths. 3955 genes were found to be differentially expressed, among which 2368 genes were significantly up-regulated and 1587 down-regulated in the line with long fruit. Microtubule and cell cycle related genes were dramatically activated in the long fruit, and transcription factors were implicated in the fruit length regulation in cucumber. Thus, our results built a foundation to dissect the molecular mechanism of fruit length control in cucumber, a key agricultural trait of significant economic importance. Comparative analysis of fruit from two near-isogenic lines, 408 (long fruit) and 409 (short fruit), was employed to discover genes and networks that regulate the fruit length. Two biological replicates were used from each line.

2015-08-11 | E-GEOD-60346 | biostudies-arrayexpress

Comparative transcriptomic analysis reveals the roles of microtubule-related genes and transcription factors in fruit length regulation in cucumber (Cucumis sativus)

2015-08-11 | GSE60346 | GEO

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