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Transcriptional Profiling of Apple (Malus x domestica Borkh) Floral Induction in Shoot Apical Meristems

ABSTRACT: Effect of the presence of fruits on the expression of genes possibly involved in floral induction in the terminal meristem of spur bourse shoot. Investigation on mecanisms involved in Biennial Bearing in mature apple trees cultivar Royal Gala.

ORGANISM(S): Malus domestica

PROVIDER: GSE64646 | GEO | 2016/03/02

SECONDARY ACCESSION(S): PRJNA271559

REPOSITORIES: GEO

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Transcriptional Profiling of Apple (Malus x domestica Borkh) Floral Induction in Shoot Apical Meristems

Project description:Effect of the presence of fruits on the expression of genes possibly involved in floral induction in the terminal meristem of spur bourse shoot. Investigation on mecanisms involved in Biennial Bearing in mature apple trees cultivar Royal Gala. Two-condition experimentÂ : 'ON' trees (unthinned control) & 'OFF' trees (deflowered) for comparison. Three comparisons at sampling datesÂ : 28, 48 and 119 days after full bloom (DAFB). Two dye switch biological replicates for each treatment and sampling date.

2016-03-02 | E-GEOD-64646 | biostudies-arrayexpress

Microarray analysis of apple buds during dormancy

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Transcriptional profiling of apple (Malus x domestica Borkh) pedicels abscission zone development

Project description:Apple pedicel vascular development array

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Transcriptional profiling of apple (Malus x domestica Borkh) pedicels abscission zone development

Project description:Apple pedicel vascular development array Twelvet apple samples. Biological replicates: 2 for each sample, independently grown and harvested.

2014-05-20 | E-GEOD-51727 | biostudies-arrayexpress

1-MCP effect on the transcriptional profiling of apple flesh (Malus x domestica Borkh, Gala variety) maintained in cold storage

Project description:Apples (Malus x domestica Borkh, Gala variety) grown in commercial orchards were harvested at maturity and maintained 2 months in cold storage with or without 1-MCP treatment.

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Transcriptional profiling of apple (Malus x domestica Borkh) pedicels displaying abnormal additional amphivasal vascular bundles in the pith

Project description:Apple pedicel vascular development array Eight apple samples. Biological replicates: 2 for each sample, independently grown and harvested.

2014-05-20 | E-GEOD-51728 | biostudies-arrayexpress

Transcriptional profiling of apple (Malus x domestica Borkh) pedicels displaying abnormal additional amphivasal vascular bundles in the pith

Project description:Apple pedicel vascular development array

2014-05-20 | GSE51728 | GEO

Microarray analysis of apple buds during dormancy

Project description:Closed terminal buds of apple trees (Malus x domestica Borkh, Royal Gala and Castel Gala varieties) grown in commercial orchards were harvested during autumn and winter and exposed to cold treatments 18 biological samples, consisting of 9 pairs of replicates, were analysed in dye-swap. Samples are whole closed terminal buds. Biological replicates are buds from 2 different harvest year subjected to similar cold treatments. Samples with contrasting dormancy status in the same harvest year were compared in 8 dye-swap. Most samples were hybridized more than once in different combinations

2015-04-06 | E-GEOD-64717 | biostudies-arrayexpress

RNA sequencing of Malus x domestica Borkh. with Botrytis cinerea

Project description:Apple is typically stored under low temperature and controlled atmospheric conditions to ensure a year round supply of high quality fruit for the consumer. During storage, losses in quality and quantity occur due to spoilage by postharvest pathogens. One important postharvest pathogen of apple is Botrytis cinerea. The fungus is a broad host necrotroph with a large arsenal of infection strategies able to infect over 1,400 different plant species. We studied the apple-B. cinerea interaction to get a better understanding of the defense response in apple. We conducted an RNAseq experiment in which the transcriptome of inoculated and non-inoculated (control and mock) apples was analyzed at 0, 1, 12 and 28 h post inoculation. Our results show extensive reprogramming of the apple's transcriptome with about 28.9 % of expressed genes exhibiting significant differential regulation in the inoculated samples. We demonstrate the transcriptional activation of pathogen-triggered immunity and a reprogramming of the fruit’s metabolism. We demonstrate a clear transcriptional activation of secondary metabolism and a correlation between the early transcriptional activation of the mevalonate pathway and reduced susceptibility, expressed as a reduction in resulting lesion diameters. This pathway produces the building blocks for terpenoids, a large class of compounds with diverging functions including defense. 1-MCP and hot water dip treatment are used to further evidence the key role of terpenoids in the defense and demonstrate that ethylene modulates this response.

2022-03-01 | GSE195841 | GEO

Genes responding to water deficit in apple (Malus?×?domestica Borkh.) roots.

Project description:BACKGROUND: Individual plants adapt to their immediate environment using a combination of biochemical, morphological and life cycle strategies. Because woody plants are long-lived perennials, they cannot rely on annual life cycle strategies alone to survive abiotic stresses. In this study we used suppression subtractive hybridization to identify genes both up- and down-regulated in roots during water deficit treatment and recovery. In addition we followed the expression of select genes in the roots, leaves, bark and xylem of 'Royal Gala' apple subjected to a simulated drought and subsequent recovery. RESULTS: In agreement with studies from both herbaceous and woody plants, a number of common drought-responsive genes were identified, as well as a few not previously reported. Three genes were selected for more in depth analysis: a high affinity nitrate transporter (MdNRT2.4), a mitochondrial outer membrane translocase (MdTOM7.1), and a gene encoding an NPR1 homolog (MpNPR1-2). Quantitative expression of these genes in apple roots, bark and leaves was consistent with their roles in nutrition and defense. CONCLUSIONS: Additional genes from apple roots responding to drought were identified using suppression subtraction hybridization compared to a previous EST analysis from the same organ. Genes up- and down-regulated during drought recovery in roots were also identified. Elevated levels of a high affinity nitrate transporter were found in roots suggesting that nitrogen uptake shifted from low affinity transport due to the predicted reduction in nitrate concentration in drought-treated roots. Suppression of a NPR1 gene in leaves of drought-treated apple trees may explain in part the increased disease susceptibility of trees subjected to dehydrative conditions.

| S-EPMC4110548 | biostudies-literature

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