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ABSTRACT: immature tassel transcriptome of maize

PROVIDER: PRJNA605168 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR11033853_1.fastq.gz	Fastqsanger.gz
	SRR11033853_2.fastq.gz	Fastqsanger.gz
	SRR11033854_1.fastq.gz	Fastqsanger.gz
	SRR11033854_2.fastq.gz	Fastqsanger.gz
	SRR11033855_1.fastq.gz	Fastqsanger.gz

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Project description:Maize tassel transcriptome

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The dicerlike1 homologue, fuzzy tassel, is required for the regulation of meristem determinacy in the inflorescence and vegetative growth in maize

Project description:We have characterized a maize mutant, fuzzy tassel (fzt) with striking inflorescence and pleiotropic defects. fzt contains a mutation in the maize dicer-like1 homolog, a key enzyme required for microRNA (miRNA) biogenesis. By profiling the small RNA population in fzt mutants, we investigated the impact of fzt mutation on miRNA abundance in seedling and tassel primordia. We also investigated the transcript abundance of potential target genes of miRNA that were impacted in fzt mutant by transcriptome profiling. The result provides an avenue for future research to link specific miRNAs and their targets to discrete phenotypes and developmental roles.

2015-02-20 | GSE52879 | GEO

Boron homeostasis functions in meristem maintenance in maize by regulating knotted1, cell cycle, and hormone signaling pathways

Project description:Here we report, that levels of the micronutrient boron are instrumental for meristem maintenance by integration into specific meristem maintenance pathways. We used RNA-seq analysis of the boron deficient maize mutant tassel-less1 to identify early molecular defects induced by boron deficiency in maize reproductive (tassel) meristems. RNA-seq results were independently verified through downstream in silico, double mutant, microscopy, proteomic, and molecular analyses.

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Maize tumors caused by Ustilago maydis require organ-specific genes in host and pathogen

Project description:Two-organism transcriptome profiling of infected seedling, adult leaf, and tassel demonstrated that both the host and pathogen exhibit organ-specific expression programs. Phenotypic screening of U. maydis mutants deleted for suites of secreted protein genes and maize growth mutants demonstrated organ-restricted tumorigenesis. Two-dye, competitive hybridizations were performed on Agilent oligo arrays. Keywords: maize, pathogen, fungus, Ustilago, organ-specificity

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Project description:Maize Tasselseed5 developing tassel transcriptome

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Progressive meristem and single-cell transcriptomes reveal the regulatory mechanisms underlying maize inflorescence development and sex differentiation

Project description:Maize develops separate ear and tassel inflorescences with initially similar morphology but finally different architecture and sexuality. The detailed regulatory mechanisms underlying these changes still remain largely clear. In this study, through analyzing the time-course meristem transcriptomes and floret single-cell transcriptomes of ear and tassel we revealed the regulatory dynamics and pathways underlying inflorescence development and sex differentiation. Our study provides a deep understanding of the regulatory mechanisms underlying inflorescence development and sex differentiation in maize, laying the foundation to identify new regulators and pathways for maize hybrid breeding and improvement.

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An integrated analysis of protein abundance, transcript level and tissue diversity to reveal developmental regulation of maize

Project description:The differentiation and subsequent development of plant tissues or organs are tightly regulated at multiple levels, including the transcriptional, posttranscriptional, translational, and posttranslational levels. Transcriptomes define many of the tissue-specific gene expression patterns in maize, and some key genes and their regulatory networks have been established at the transcriptional level. In this study, the sequential window acquisition of all theoretical spectra-mass spectrometry technique was employed as a quantitative proteome assay of four representative maize tissues, and a set of high confidence proteins were identified. Integrated analysis of the proteome and transcriptome revealed that protein abundance was positively correlated with mRNA level with weak to moderate correlation coefficients, but the abundance of key proteins for function or architecture in a given tissue was closely tempo-spatially regulated at the transcription level. A subset of differentially expressed proteins, specifically tissue-specific proteins, were identified, e.g., reproductive structure and flower development-related proteins in tassel and ear, lipid and fatty acid biosynthetic process-related proteins in immature embryo, and inorganic substance and oxidation reduction responsive proteins in root, potentially revealing the physiology, morphology and function of each tissue. Furthermore, we found many new proteins in specific tissues that were highly correlated with their mRNA levels, in addition to known key factors. These proteome data provide new perspective for understanding many aspects of maize developmental biology.

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Project description:maize tassel architecture development

| PRJNA985462 | ENA

The dicerlike1 homologue, fuzzy tassel, is required for the regulation of meristem determinacy in the inflorescence and vegetative growth in maize

2015-02-20 | E-GEOD-52879 | biostudies-arrayexpress

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Project description:As a key member of the grass-specific subclade of argonaute proteins, AGO18b protein has been proposed to bind 24-nt meiotic phasiRNAs based on their co-expression in tapetal and meiotic cells. Here we show that expression of in maize tassels is strictly induced by developmental stages. Interestingly, reduced expression of AGO18b in both Mutator-mediated (ago18b::mum) and RNAi mutants leads to an increase in plant height and tassel length, suggesting its non-meiotic function as a negative regulator of SAM/IM maintenance. During the premiotic stage, AGO18b primarily binds to 21-nt phasiRNAs with 5’-uridine and less binds to 24-nt phasiRNAs with 5’-adenosine, coincident with its enrichment of miR2275 required for the 24-nt phasiRNA production. MiR166a, the negative regulator of SAM, is mostly enriched among AGO18b-bound miRNAs, implicating a novel negative regulator of IM. We suggest that AGO18b regulates maize tassel development via both phasiRNAs and miRNA pathways.

2019-08-07 | GSE93983 | GEO

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