scholarly journals Comparative Analysis of the Transcriptomes of Persisting and Abscised Fruitlets: Insights into Plant Hormone and Carbohydrate Metabolism Regulated Self-Thinning of Pecan Fruitlets during the Early Stage

2021 ◽  
Vol 44 (1) ◽  
pp. 176-193
Author(s):  
Jiyu Zhang ◽  
Tao Wang ◽  
Fan Zhang ◽  
Yongzhi Liu ◽  
Gang Wang
Keyword(s):  
Salicylic Acid ◽  
Molecular Mechanisms ◽  
Early Stage ◽  
Starch Content ◽  
Differentially Expressed ◽  
Hormone Signaling ◽  
Rna Seq ◽  
Fruit Drop ◽  
Salicylic Acid Signaling ◽  
Glucose Synthesis

Pecan is one of the most popular nut species in the world. The fruit drop rate of the pecan ‘Pawnee’ is more than 57%, with four fruit drop stages, which is very serious. In this study, we conducted transcriptomic profiling of persisting and abscised fruitlets in early fruit development by RNA-seq. A total of 11,976 differentially expressed genes (DEGs) were identified, 3012 upregulated and 8964 downregulated, in a comparison of abscised vs. persisting fruitlets at 35 days after anthesis (DAA). Our transcriptomic data suggest that gene subsets encoding elements involving the biosynthesis, metabolism, perception, signal transduction, and crosstalk of the plant hormones abscisic acid (ABA), auxin, cytokinin, ethylene, and gibberellin (GA) and plant growth regulators jasmonates, salicylic acid, and brassinosteroids were differentially expressed. In addition, the majority of transcriptionally activated genes involved in hormone signaling (except for ethylene and salicylic acid signaling) were downregulated in abscised fruitlets. The differential expression of transcripts coding for enzymes involved in sucrose, glucose, trehalose, starch, galactose, and galactinol metabolism shows that sucrose, galactinol, and glucose synthesis and starch content were reduced as starch biosynthesis was blocked, and retrogradation and degradation intensified. These results suggest that the abscised pecan fruitlets stopped growing and developing for some time before dropping, further indicating that their sugar supply was reduced or stopped. The transcriptome characterization described in this paper contributes to unravelling the molecular mechanisms and pathways involved in the physiological abscission of pecan fruits.

scholarly journals Bioinformatics analysis of differentially expressed genes and identification of an miRNA–mRNA network associated with entorhinal cortex and hippocampus in Alzheimer’s disease

Hereditas ◽  
2021 ◽  
Vol 158 (1) ◽  
Author(s):  
Haoming Li ◽  
Linqing Zou ◽  
Jinhong Shi ◽  
Xiao Han
Keyword(s):  
Alzheimer’S Disease ◽  
Alzheimer's Disease ◽  
Differentially Expressed Genes ◽  
Entorhinal Cortex ◽  
Molecular Mechanisms ◽  
Kegg Pathway ◽  
Neurodegenerative Disorder ◽  
Early Stage ◽  
Differentially Expressed ◽  
Hub Genes

Abstract Background Alzheimer’s disease (AD) is a fatal neurodegenerative disorder, and the lesions originate in the entorhinal cortex (EC) and hippocampus (HIP) at the early stage of AD progression. Gaining insight into the molecular mechanisms underlying AD is critical for the diagnosis and treatment of this disorder. Recent discoveries have uncovered the essential roles of microRNAs (miRNAs) in aging and have identified the potential of miRNAs serving as biomarkers in AD diagnosis. Methods We sought to apply bioinformatics tools to investigate microarray profiles and characterize differentially expressed genes (DEGs) in both EC and HIP and identify specific candidate genes and pathways that might be implicated in AD for further analysis. Furthermore, we considered that DEGs might be dysregulated by miRNAs. Therefore, we investigated patients with AD and healthy controls by studying the gene profiling of their brain and blood samples to identify AD-related DEGs, differentially expressed miRNAs (DEmiRNAs), along with gene ontology (GO) analysis, KEGG pathway analysis, and construction of an AD-specific miRNA–mRNA interaction network. Results Our analysis identified 10 key hub genes in the EC and HIP of patients with AD, and these hub genes were focused on energy metabolism, suggesting that metabolic dyshomeostasis contributed to the progression of the early AD pathology. Moreover, after the construction of an miRNA–mRNA network, we identified 9 blood-related DEmiRNAs, which regulated 10 target genes in the KEGG pathway. Conclusions Our findings indicated these DEmiRNAs having the potential to act as diagnostic biomarkers at an early stage of AD.

scholarly journals Comparative phosphoproteomic analysis of blast resistant and susceptible rice cultivars in response to salicylic acid

2019 ◽  
Vol 19 (1) ◽  
Author(s):  
Ranran Sun ◽  
Shiwen Qin ◽  
Tong Zhang ◽  
Zhenzhong Wang ◽  
Huaping Li ◽  
...  
Keyword(s):  
Salicylic Acid ◽  
Molecular Mechanisms ◽  
Defense Responses ◽  
Differentially Expressed ◽  
Phosphoglycerate Mutase ◽  
Regulatory Function ◽  
Rice Cultivars ◽  
Resistance Response ◽  
Basal Resistance ◽  
Pathogen Invasion

Abstract Background Salicylic acid (SA) is a significant signaling molecule that induces rice resistance against pathogen invasion. Protein phosphorylation carries out an important regulatory function in plant defense responses, while the global phosphoproteome changes in rice response to SA-mediated defense response has not been reported. In this study, a comparative phosphoproteomic profiling was conducted by two-dimensional gel electrophoresis (2-DE) and mass spectrometry (MS) analysis, with two near-isogenic rice cultivars after SA treatment. Results Thirty-seven phosphoprotein spots were differentially expressed after SA treatment, twenty-nine of which were identified by MALDI-TOF/TOF MS, belonging to nine functional categories. Phosphoproteins involved in photosynthesis, antioxidative enzymes, molecular chaperones were similarly expressed in the two cultivars, suggesting SA might alleviate decreases in plant photosynthesis, regulate the antioxidant defense activities, thus improving basal resistance response in both cultivars. Meanwhile, phosphoproteins related to defense, carbohydrate metabolism, protein synthesis and degradation were differentially expressed, suggesting phosphorylation regulation mediated by SA may coordinate complex cellular activities in the two cultivars. Furthermore, the phosphorylation sites of four identified phosphoproteins were verified by NanoLC-MS/MS, and phosphorylated regulation of three enzymes (cinnamoyl-CoA reductase, phosphoglycerate mutase and ascorbate peroxidase) was validated by activity determination. Conclusions Our study suggested that phosphorylation regulation mediated by SA may contribute to the different resistance response of the two cultivars. To our knowledge, this is the first report to measure rice phosphoproteomic changes in response to SA, which provides new insights into molecular mechanisms of SA-induced rice defense.

scholarly journals Integration of mRNA and miRNA Analysis Reveals the Molecular Mechanism Underlying Salt and Alkali Stress Tolerance in Tobacco

2019 ◽  
Vol 20 (10) ◽  
pp. 2391 ◽  
Author(s):  
Jiayang Xu ◽  
Qiansi Chen ◽  
Pingping Liu ◽  
Wei Jia ◽  
Zheng Chen ◽  
...  
Keyword(s):  
Salinity Stress ◽  
Regulatory Networks ◽  
Molecular Mechanisms ◽  
Crop Yields ◽  
Antioxidant Activities ◽  
Expression Patterns ◽  
Differentially Expressed ◽  
Alkali Stress ◽  
Rna Seq ◽  
Alkali Tolerance

Salinity is one of the most severe forms of abiotic stress and affects crop yields worldwide. Plants respond to salinity stress via a sophisticated mechanism at the physiological, transcriptional and metabolic levels. However, the molecular regulatory networks involved in salt and alkali tolerance have not yet been elucidated. We developed an RNA-seq technique to perform mRNA and small RNA (sRNA) sequencing of plants under salt (NaCl) and alkali (NaHCO3) stress in tobacco. Overall, 8064 differentially expressed genes (DEGs) and 33 differentially expressed microRNAs (DE miRNAs) were identified in response to salt and alkali stress. A total of 1578 overlapping DEGs, which exhibit the same expression patterns and are involved in ion channel, aquaporin (AQP) and antioxidant activities, were identified. Furthermore, genes involved in several biological processes, such as “photosynthesis” and “starch and sucrose metabolism,” were specifically enriched under NaHCO3 treatment. We also identified 15 and 22 miRNAs that were differentially expressed in response to NaCl and NaHCO3, respectively. Analysis of inverse correlations between miRNAs and target mRNAs revealed 26 mRNA-miRNA interactions under NaCl treatment and 139 mRNA-miRNA interactions under NaHCO3 treatment. This study provides new insights into the molecular mechanisms underlying the response of tobacco to salinity stress.

RNA-seq analysis of 2 closely related leukemia clones that differ in their self-renewal capacity

Blood ◽  
2011 ◽  
Vol 117 (2) ◽  
pp. e27-e38 ◽  
Author(s):  
Brian T. Wilhelm ◽  
Mathieu Briau ◽  
Pamela Austin ◽  
Amélie Faubert ◽  
Geneviève Boucher ◽  
...  
Keyword(s):  
Stem Cell ◽  
Molecular Mechanisms ◽  
Differentially Expressed ◽  
Leukemic Cells ◽  
Rna Seq ◽  
Self Renewal ◽  
Leukemia Stem Cell ◽  
Cellular Behavior ◽  
Transcriptome Variation ◽  
G Protein Coupled

Abstract The molecular mechanisms regulating self-renewal of leukemia stem cells remain poorly understood. Here we report the generation of 2 closely related leukemias created through the retroviral overexpression of Meis1 and Hoxa9. Despite their apparent common origin, these clonal leukemias exhibit enormous differences in stem cell frequency (from 1 in 1.4, FLA2; to 1 in 347, FLB1), suggesting that one of these leukemias undergoes nearly unlimited self-renewal divisions. Using next-generation RNA-sequencing, we characterized the transcriptomes of these phenotypically similar, but biologically distinct, leukemias, identifying hundreds of differentially expressed genes and a large number of structural differences (eg, alternative splicing and promoter usage). Focusing on ligand-receptor pairs, we observed high expression levels of Sdf1-Cxcr4; Jagged2-Notch2/1; Osm-Gp130; Scf-cKit; and Bmp15-Tgfb1/2. Interestingly, the integrin beta 2-like gene (Itgb2l) is both highly expressed and differentially expressed between our 2 leukemias (∼ 14-fold higher in FLA2 than FLB1). In addition, gene ontology analysis indicated G-protein-coupled receptor had a much higher proportion of differential expression (22%) compared with other classes (∼ 5%), suggesting a potential role regulating subtle changes in cellular behavior. These results provide the first comprehensive transcriptome analysis of a leukemia stem cell and document an unexpected level of transcriptome variation between phenotypically similar leukemic cells.

scholarly journals RNA-Seq Profiling of Circular RNAs During Development of Hindgut in Rat Embryos With Ethylenethiourea-Induced Anorectal Malformations

2021 ◽  
Vol 12 ◽  
Author(s):  
Si Ying Li ◽  
Chen Yi Wang ◽  
Yun Xia Xiao ◽  
Xiao Bing Tang ◽  
Zheng Wei Yuan ◽  
...  
Keyword(s):  
Molecular Mechanisms ◽  
Transforming Growth Factor ◽  
Quantitative Polymerase Chain Reaction ◽  
Anorectal Malformations ◽  
Normal Group ◽  
Differentially Expressed ◽  
Mitogen Activated Protein Kinase ◽  
Circular Rnas ◽  
Rna Seq ◽  
Pregnant Rats

Anorectal malformations (ARMs) are among the most common congenital terminal digestive tract malformations. Circular RNAs (circRNAs), a novel type of endogenous non-coding RNAs, play roles in the development of the digestive system; however, their contributions to the pathogenesis of ARMs are not well-established. In this study, we explored the mechanism underlying ethylenethiourea (ETU)-induced ARMs by profiling circRNA expression via RNA-seq and constructing a regulatory circRNA-miRNA-mRNA network. Nine pregnant rats were gavage-fed a single dose of 125 mg/kg 1% ETU (ARM group) on gestational day 10 (GD10), and another 9 pregnant rats received a similar dose of saline (normal group) as a control. Embryos were obtained by cesarean section on the key time-points of anorectal development (GD14, GD15, and GD16). Hindgut samples isolated from the fetuses were evaluated by high-throughput sequencing and differentially expressed circRNAs were validated by reverse transcription-quantitative polymerase chain reaction, agarose gel electrophoresis, and Sanger cloning and sequencing. A total of 18295 circRNAs were identified in the normal and ARM groups. Based on the 425 differentially expressed circRNAs (|Fc| > 2, p < 0.05), circRNA-miRNA and miRNA-mRNA pairs were predicted using miREAP, miRanda, and TargetScan. A total of 55 circRNAs (14 up- and 41 downregulated in the ARM group compared to the normal group) were predicted to bind to 195 miRNAs and 947 mRNAs. Competing endogenous RNA networks and a Kyoto Encyclopedia of Genes and Genomes analysis revealed that novel_circ_001042 had the greatest connectivity and was closely related to ARM-associated signaling pathways, such as the Wingless Type MMTV integration site family, mitogen-activated protein kinase, and transforming growth factor-β pathways. These results provide original insight into the roles of circRNAs in ARMs and provide a valuable resource for further analyses of molecular mechanisms and signaling networks.

scholarly journals Molecular Mechanisms Underlying Sugarcane Response to Aluminum Stress by RNA-Seq

2020 ◽  
Author(s):  
Thiago Mateus Rosa-Santos ◽  
Renan Gonçalves da Silva ◽  
Poornasree Kumar ◽  
Pratibha Kottapalli ◽  
Chiquito Crasto ◽  
...  
Keyword(s):  
Differentially Expressed Genes ◽  
Molecular Mechanisms ◽  
Aluminum Tolerance ◽  
Differentially Expressed ◽  
Rna Seq ◽  
Aluminum Stress ◽  
Physiological Processes ◽  
Aluminum Ions ◽  
Detoxification Mechanism ◽  
Genomic Studies

Sugarcane is an important sugar-source crop. As any other plant, it can be exposed to several abiotic stress conditions. Though some metals contribute to critical physiological processes in plants, the presence of aluminum ions (Al3+) can be very toxic. In order to develop plants that flourish in acidic soils, it is critical to gain insights into the molecular mechanisms of sugarcane response to aluminum stress. To determine the genes involved in sugarcane response to aluminum stress we generated 372 million paired-end RNA sequencing reads, from roots of CTC-2 and RB855453 two contrasting cultivars. Data normalization resulted in 162,161 contigs and 97,335 trinity genes. After the read cutoff, the differentially expressed genes were 4,858 in CTC-2 and 1,307 in the RB855453, Treatment Vs Control, respectively. The differentially expressed genes were annotated into 34 functional categories. The majority of the genes were upregulated in the CTC-2 (tolerant cultivar) and down regulated in RB855453 (sensitive cultivar). Here, we present the first root-transcriptome of sugarcane under aluminum stress. The results and conclusions of this study provide a valuable resource for future genetic and genomic studies in sugarcane. This transcriptome analysis points out that sugarcane tolerance to aluminum may be explained by an efficient detoxification mechanism combined with the lateral root formation and activation of redox enzymes. Following our results, we present here, a hypothetical model for the aluminum tolerance in CTC-2 cultivar.

scholarly journals Puccinia triticina pathotypes THTT and THTS display complex transcript profiles on wheat cultivar Thatcher

2020 ◽  
Author(s):  
jie Wei ◽  
Liping Cui ◽  
na Zhang ◽  
dongdong Du ◽  
qingfang Meng ◽  
...  
Keyword(s):  
Transcription Initiation ◽  
Wheat Cultivar ◽  
Early Stage ◽  
Puccinia Triticina ◽  
Differentially Expressed ◽  
Post Inoculation ◽  
Rna Seq ◽  
Initiation Factors ◽  
Transcript Profiles ◽  
Important Disease

Abstract Background: Wheat leaf rust is an important disease worldwide. Understanding the pathogenic molecular mechanism of Puccinia triticina Eriks . ( Pt ) and the inconstant toxic region is critical for managing the disease. The present study aimed to analyze the pathogenic divergence between Pt isolates. Results: Total RNA was extracted from the wheat cultivar Thatcher infected by two Pt isolates, Tc361_1 (THTT) and Tc284_2 (THTS), at 144 hours post inoculation (hpi). The mRNA was then sequenced, and a total of 2,784 differentially expressed genes (DEGs) were detected. Forty-five genes were specifically expressed in THTT; these genes included transcription initiation factors and genes with transmembrane transporter activity and other genes. Twenty-six genes were specifically expressed in THTS, including genes with GTPase activity, ABC transporters and other genes. Fifty-four differentially expressed candidate effectors were screened from the two isolates. Two candidate effectors were chosen and validated on tobacco, and the results showed that they could inhibit necrosis induced by BAX. qRT-PCR of 12 significant DEGs was carried out to validate that the results are similar to those of RNA-seq at 144 hpi, to show the expression levels of these DEGs in the early stage and to elucidate the differences in expression between the two Pt pathotypes. Conclusion: The results obtained in this study showed that although the two pathotypes of THTT and THTS contribute similar virulence to wheat, there are a large number of genes participate in the interaction with the susceptible wheat cultivar Thatcher, and revealed the pathogenicity of rust is very complicated.

scholarly journals Integrated Analysis of lncRNA, miRNA and mRNA Reveals Novel Insights into the Fertility Regulation of Large White Sows

2019 ◽  
Author(s):  
Huiyan Hu ◽  
Qing Jia ◽  
Jianzhong Xi ◽  
Bo Zhou ◽  
Zhiqiang Li
Keyword(s):  
Molecular Mechanisms ◽  
Ovarian Tissue ◽  
Length Distribution ◽  
Differentially Expressed ◽  
Integrated Analysis ◽  
Rna Seq ◽  
Large White ◽  
Reproductive Process ◽  
Mrna Targets ◽  
Micro Rnas

Abstract Background: Improving sow fertility is extremely important as it can lead to increased reproductive efficiency and thus profitability for swine producers. There are considerable differences in fertility rates among individual animals, but the underlying molecular mechanisms remain unclear. In this study, by using different types of RNA libraries, we investigated the complete transcriptome of ovarian tissue during the luteal (L) and follicular phases (F) of the estrous cycle in Large White pigs with high (H) and low fecundity (L), and performed a comprehensive analysis of long noncoding RNAs (lncRNAs), mRNAs and micro RNAs (miRNAs) from 16 samples by combining RNA sequencing (RNA-seq) with bioinformatics. Results: In total, 24,447 lncRNAs, 27,370 mRNAs, and 216 known miRNAs were identified in ovarian tissues. The genomic features of lncRNAs, such as length distribution and number of exons, were further analyzed. We selected a threshold of P < 0.05 and |log2 (fold change)| ≥ 1to obtain the differentially expressed lncRNAs, miRNAs and mRNAs by pairwise comparison (LH vs. LL, FH vs. FL). Bioinformatics analysis of these differentially expressed RNAs revealed multiple significantly enriched pathways (P < 0.05) that were closely involved in the reproductive process, such as ovarian steroidogenesis, lysosome, steroid biosynthesis, and the estrogen and GnRH signaling pathways. Moreover, bioinformatics screening of differentially expressed miRNAs that share common miRNA response elements (MREs) with lncRNAs and their downstream mRNA targets were performed. Finally, we constructed lncRNA–miRNA–mRNA regulation networks. The key genes in these networks were verified by Reverse Transcription Real-time Quantitative PCR (RT-qRCR), which were consistent with the results from RNA-Seq data.Conclusions: These results provide further insights into the fertility of pigs and can contribute to further experimental investigation of the functions of these genes.

scholarly journals Transcriptome analysis of two Pogostemon cablin chemotypes reveals genes related to patchouli alcohol biosynthesis

PeerJ ◽  
2021 ◽  
Vol 9 ◽  
pp. e12025
Author(s):  
Wuping Yan ◽  
Zhouchen Ye ◽  
Shijia Cao ◽  
Guanglong Yao ◽  
Jing Yu ◽  
...  
Keyword(s):  
Molecular Mechanisms ◽  
Differentially Expressed ◽  
Perennial Herb ◽  
Pcr Analysis ◽  
Biosynthetic Pathways ◽  
Rna Seq ◽  
Patchouli Alcohol ◽  
Pogostemon Cablin ◽  
Polymerase Chain ◽  
Distribution Frequency

Pogostemon cablin, a medicinally and economically important perennial herb, is cultivated around the world due to its medicinal and aromatic properties. Different P. cablin cultivars exhibit different morphological traits and patchouli oil components and contents (especially patchouli alcohol (PA) and pogostone (PO)). According to the signature constituent of the leaf, P. cablin was classified into two different chemotypes, including PA-type and PO-type. To better understand the molecular mechanisms of PA biosynthesis, the transcriptomes of Chinese-cultivated P. cablin cv. PA-type “Nanxiang” (NX) and PO-type “Paixiang” (PX) were analyzed and compared with ribonucleic acid sequencing (RNA-Seq) technology. We obtained a total of 36.83 G clean bases from the two chemotypes, compared them with seven databases and revealed 45,394 annotated unigenes. Thirty-six candidate unigenes participating in the biosynthesis of PA were found in the P. cablin transcriptomes. Overall, 8,390 differentially expressed unigenes were identified between the chemotypes, including 2,467 upregulated and 5,923 downregulated unigenes. Furthermore, six and nine differentially expressed genes (DEGs) were mapped to the terpenoid backbone biosynthetic and sesquiterpenoid and triterpenoid biosynthetic pathways, respectively. One key sesquiterpene synthase gene involved in the sesquiterpenoid and triterpenoid biosynthetic pathways, encoding patchoulol synthase variant 1, was significantly upregulated in NX. Additionally, GC-MS analysis of the two chemotypes in this study showed that the content of PA in NX was significantly higher than that of PX, while the content of PO showed the opposite phenotype. Quantitative real-time polymerase chain reaction (qRT-PCR) analysis showed that the DEG expression tendency was consistent with the transcriptome sequencing results. Overall, 23 AP2/ERF, 13 bHLH, 11 MYB, 11 NAC, three Trihelix, 10 WRKY and three bZIP genes that were differentially expressed may act as regulators of terpenoid biosynthesis. Altogether, 8,314 SSRs were recognized within 6,825 unigenes, with a distribution frequency of 18.32%, among which 1,202 unigenes contained more than one SSR. The transcriptomic characteristics of the two P. cablin chemotypes are comprehensively reported in this study, and these results will contribute to a better understanding of the molecular mechanism of PA biosynthesis. Our transcriptome data also provide a valuable genetic resource for further studies on P. cablin.

scholarly journals Comparative Transcriptome Analysis of a Fan-shaped Inflorescence in Pineapple Using RNA-seq

2020 ◽  
Author(s):  
Tao Xie ◽  
Zhiquan Cai ◽  
Aiping Luan ◽  
Wei Zhang ◽  
Jing Wu ◽  
...  
Keyword(s):  
Molecular Mechanisms ◽  
Expression Patterns ◽  
Soluble Sugar ◽  
Differentially Expressed ◽  
Soluble Solids ◽  
Pcr Analysis ◽  
Rna Seq ◽  
Stem Apex ◽  
Inflorescence Axis ◽  
Flower Stem

Abstract Background: Pineapple plant usually has a capitulum. However, a fan-shaped inflorescence was evolved in an exceptional material, having multiple crown buds. In order to reveal the molecular mechanisms of the formation of the fan-shaped inflorescence, fruit traits and the transcriptional differences between a fan-shaped inflorescence (FI) and a capitulum inflorescence (CI) pineapples were analyzed in the three tissues, i.e., the flower stem apex (FIs and CIs), the base of the inflorescence (FIb and CIb), and the inflorescence axis (FIa and CIa).Results: Except for a clear differentiation of inflorescence morphology, no significant differences in the structure of inflorescence organs and the main nutritional components (soluble solids, soluble sugar, titratable acid, and VC) in fruits were found between the two pineapples. Between the fan- and capitulum-shaped inflorescences, a total of 5370 differentially expressed genes (DEGs) were identified across the three tissues; and 3142, 2526 and 2255 DEGs were found in the flower stem apex, the base of the inflorescence, and the inflorescence axis, respectively. Of these genes, there were 489 overlapping DEGs in all three tissue comparisons. In addition, 5769 DEGs were identified between different tissues within each pineapple. Functional analysis indicated between the two pineapples that 444 transcription factors (TFs) and 206 inflorescence development related genes (IDGs) were differentially expressed in at least one tissue comparison, while 45 TFs and 21 IDGs were overlapped across the 3 tissues. Among the 489 overlapping DEGs in the 3 tissue comparisons between the two pineapples, excluding the IDGs and TFs, 80 of them revealed a higher percentage of involvement in the biological processes relating to response to auxin, and reproductive processes. RNA-seq value and real-time quantitative PCR analysis exhibited the same gene expression patterns in the three tissues. Conclusions: Our result provided novel cues for understanding the molecular mechanisms of the formation of fan-shaped inflorescence in pineapple, making a valuable resource for the study of plant breeding and the speciation of the pineapples.

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