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Sporisorium reilianum Infection Changes Inflorescence and Branching Architectures of Maize

ABSTRACT: S. reilianum triggered loss of organ and meristem identity, and loss of meristem determinacy in male and female inflorescences and flowers. Microarray analysis showed that these developmental changes were accompanied with transcriptional regulation of genes proposed to regulate floral organ and meristem identity, and meristem determinacy in maize.

ORGANISM(S): Zea mays

PROVIDER: GSE29747 | GEO | 2011/09/01

SECONDARY ACCESSION(S): PRJNA141181

REPOSITORIES: GEO

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Sporisorium reilianum Infection Changes Inflorescence and Branching Architectures of Maize

Project description:S. reilianum triggered loss of organ and meristem identity, and loss of meristem determinacy in male and female inflorescences and flowers. Microarray analysis showed that these developmental changes were accompanied with transcriptional regulation of genes proposed to regulate floral organ and meristem identity, and meristem determinacy in maize. Infected ears were compared with mock infected ears. Each treatment had 3 biological replicates Disease: S. reilianum-infected ears with elongated kernel: Zm_Sr5_15_2_Leafy ears4weeks_I, Zm_Sr5_15_2_Leafy ears4weeks_II, Zm_Sr5_15_2_Leafy ears4weeks_III Disease: Mock infected ears at: Zm_Sr5_15_2_Mock4weeks_I, Zm_Sr5_15_2_Mock4weeks_II, Zm_Sr5_15_2_Mock4weeks_III biological replicate: Zm_Sr5_15_2_Leafy ears4weeks_I, Zm_Sr5_15_2_Leafy ears4weeks_II, Zm_Sr5_15_2_Leafy ears4weeks_III biological replicate: Zm_Sr5_15_2_Mock4weeks_I, Zm_Sr5_15_2_Mock4weeks_II, Zm_Sr5_15_2_Mock4weeks_III

2011-08-31 | E-GEOD-29747 | biostudies-arrayexpress

Sporisorium reilianum

Project description:Sporisorium reilianum Genome sequencing and assembly

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Expression data from Maize leaves post inoculation of Sporisorium reilianum.

Project description:Head smut of maize, which is caused by the Sporisorium reilianum f. sp. Zeae (Kühn), has been a serious disease in maize. In order to find head smut resistant candidate genes, microarrays were used to monitor the gene expression profiles between disease resistant near isogenic lines (NIL) L282 and L43, highly resistant inbred line Q319 and highly susceptible inbred line Huangzao4 after 0 to7 days post inoculation of S.reiliana by artificial inoculation method.

2012-08-16 | GSE40052 | GEO

Floral transition in maize infected with Sporisorium reilianum disrupts compatibility with this biotrophic fungal pathogen

Project description:Sporisorium reilianum f. sp. zeae is an important biotrophic pathogen that causes head smut disease in maize. Head smut is not obvious until the tassels and ears emerge. S. reilianum has a very long life cycle that spans almost the entire developmental program of maize after the pathogen successfully invades the root. The aim of this study was to understand at a molecular level how this pathogen interacts with the host during its long life cycle, and how this interaction differs between susceptible and resistant varieties of maize after hyphal invasion. We investigated transcriptional changes in the resistant maize line Mo17 at four developmental stages using a maize 70mer-oligonucleotide microarray. We found that there was a lengthy compatible relationship between the pathogen and host until the early 8th-leaf stage. The resistance in Mo17 relied on the assignment of auxins and regulation of flavonoids in the early floral primordium during the early floral transition stage. We propose a model describing the putative mechanism of head smut resistance in Mo17 during floral transition. In the model, the synergistic regulations among auxins, flavonoids, and hyphal growth play a key role in maintaining compatibility with S. reilianum in the resistant maize line

2013-01-29 | GSE41916 | GEO

Digital gene expression analysis of early root infection of Sporisorium reilianum f.sp.zeae in maize based on susceptible and resistant lines

Project description:The maize smut fungus, Sporisorium reilianum f. sp. zeae, which is an important biotrophic pathogen responsible for extensive crop losses, infects maize by invading the root during the early seedling stage. In order to investigate disease-resistance mechanisms at this early seedling stage, digital gene expression (DGE) analysis, which applies a dual-enzyme approach (DpnII and NlaIII), was used to identify the transcriptional changes in roots of Huangzao4 (susceptible) and Mo17 (resistant) after inoculation with teliospores of S. reilianum. Before and after inoculation, pathogenesis-related genes were differentially regulated and enzymes involved in controlling reactive oxygen species (ROS) levels showed different activity between Huangzao4 and Mo17, which can potentially lead to changes in the growth of S. reilianum and ROS production in maize. Moreover, lignin depositions of roots were also changed differentially during root colonization of hyphae between Huangzao4 and Mo17. These results suggest that the interplays between S. reilianum and maize during the early infection stage involve many interesting transcriptional and physiological changes, which offer several novel insights for understanding the mechanisms of resistance to the fungal infection.

2012-12-03 | GSE40952 | GEO

Transcriptional responses analysis of the inflorescence meristems in Jatropha curcas following gibberellin treatment

Project description:Our results showed that 951 differentially expressed genes (DEGs) were obtained to response to gibberellin treatment. The 6-h time point was an important phase in the response to exogenous gibberellin. Furthermore, the plant endogenous gibberellin, auxin, ethylene, abscisic acid, and brassinolide signaling transduction pathways were repressed after exogenous GA3 treatment. However, the DEGs (JcAHP1, JcHK3, and JcMYC2, JcMYC4) which were respectively associated with cytokinin and jasmonic acid signaling were up-regulation for 24-h time point following GA3 treatment. In addition, the floral meristem determinacy genes (JcLFY and JcSOC1) and floral organ identity genes (JcAP3, JcPI, and JcSEP1-3) were significantly up-regulated, but their negative factor (JcSVP) was down-regulated after GA3 treatment.

2021-12-31 | GSE107561 | GEO

Floral transition in maize infected with Sporisorium reilianum disrupts compatibility with this biotrophic fungal pathogen

2013-01-29 | E-GEOD-41916 | biostudies-arrayexpress

Genome sequence of Sporisorium reilianum SRS1_H2-8

Project description:Sequencing and comparative genomics of Sporisorium reilianum f. sp. reilianum strain SRS1_H2-8

| PRJEB19311 | ENA

Transcriptome analysis of differentially expressed genes (DEGs) induced by Sporisorium reilianum between the two lines of ZmWRKY-KO and B73

Project description:The 7d-mesocotyls of wild type B73 and its ZmWRKY53-KO counterparts were treated with or without S. reilianum for RNA sequencing.The differentially expressed genes (DEGs) were identified based on the criteria of fold-change > 2 and P < 0.05. Under normal conditions, we found 1,025 downregulated and 599 upregulated differentially expressed genes (DEGs) in the ZmWRKY53-KO plant compared to its wild-type B73 counterpart. Under S. reilianum-infected conditions, 1,041 downregulated and 1,268 upregulated DEGs were identified in the ZmWRKY53-KO plant.

2024-10-04 | GSE278385 | GEO

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