Project description:An antifungal aroma substance, 2-phenylethanol (PEA), was isolated from antagonistic yeast strain Kloeckera apiculata extract. Microarry were used to analyse its role citrus. We used microarrays to detail the global programme of gene expression underlying Citrus were treated with 1.0x108 cells/ml K. apiculata (KA), PEA (0.15%), the extract (1000xdilute) and control (CK) for 24 h, An antifungal aroma substance, 2-phenylethanol, was isolated from antagonistic yeast strain Kloeckera apiculata. To analyse its role in Citrus response,Citrus were treated with K. apiculata , 2-phenylethano (0.15%), the extract (1000xdilute) and control (CK) for 24 h, respectively. The fresh epicarp of citrus was separated by knife and directly frozen in liquid nitrogen for RNA extraction and hybridization on Affymetrix microarrays.

2014-01-01 | E-GEOD-45680 | biostudies-arrayexpress

Expression data from citrus fruit (Citrus sinensis L. Osbeck)

2014-01-01 | GSE45680 | GEO

Transcriptome analysis of Arthrobacter in the phyllosphere

Project description:Arthrobacter chlorophenolicus A6 is a 4-chlorophenol degrading soil bacterium with high phyllosphere colonization capacity. Till now the genetic basis for the phyllosphere competency of Arthrobacter or other pollutant-degrading bacteria is uncertain. We investigated global gene expression profile of A. chlorophenolicus grown in the phyllosphere of common bean (Phaseolus vulgaris) compared to growth on agar surfaces. We designed transcriptome arrays and investigated which genes had different transcript levels in the phyllosphere of common bean (Phaseolus vulgaris) as compared to agar surfaces. Since water availability is considered an important factor in phyllosphere survival and activity, we included both high and low relative humidity treatments for the phyllosphere-grown cells. In addition, we determined the expression profile under pollutant exposure by the inclusion of two agar surface treatments, i.e. with and without 4-chlorophenol.

2013-06-21 | E-GEOD-48198 | biostudies-arrayexpress

antagonistic activity of epiphytic Pseudomonas strains against phytopathogenic Pseudomonas syringae pv. syringae

Project description:Evaluation of antagonistic activity of epiphytic Pseudomonas strains against phytopathogenic Pseudomonas syringae pv. syringae causing bacterial Citrus blast and black pit

| PRJEB44322 | ENA

Comparative Genomic Analyses among Citrus-Associated strains of Xylella fastidiosa

Project description:With the aid of a biochip, carrying representative sequences from approximately 2200 sequences from the genome of isolate 9a5c from X. fastidiosa (Xf), microarray-based comparisons have been performed with 6 different Xf isolates obtained from citrus plants (Table 1). Four of these isolates (56a, 9.12c, 187b, and 36f) were obtained from CVC-affected trees and are representatives of the most prevalent Xf haplotypes found in sweet orange orchards across the state of São Paulo, while isolate CV21 was obtained from a non-symptomatic tree from the same region. Isolate Fb7, on the other hand, was obtained from a sweet orange tree that displayed symptoms of “Pecosita”, a disease similar to CVC that occurs in some citrus-growing regions of Argentina. Keywords: Comparative Genomic Hybridization

2007-07-18 | GSE8493 | GEO

GNPS Florida Citrus Strains crude extracts - 02212020

Project description:Crude extracts of 1L cultures of fungal and bacterial strains isolated from citrus trees under high HLB pressure, grown for 1 week. All showed in vitro inhibition of Liberibacter crescens.

2020-02-21 | MSV000085000 | GNPS

Leaf transcriptomes of Arabidopsis thaliana colonized by representative phyllosphere commensals alone and in combination with the pathogen Pseudomonas syringae DC3000

Project description:Plants are colonized by a variety of microorganisms, the plant microbiota. In the phyllosphere, the above-ground parts of plants, bacteria are the most abundant inhabitants. Most of these microorganisms are not pathogenic and the plant responses to commensals or to pathogen infection in the presence of commensals are not well understood. We report the Arabidopsis leaf transcriptome after 3 to 4 weeks of colonization by Methylobacterium extorquens PA1 and Sphingomonas melonis Fr1, representatives of two abundant genera in the phyllosphere, compared to axenic plants. In addition, we also sequenced the transcriptome of Arabidopsis 2 and 7 days after spray-infection with a low dose of P. syringae DC3000 and in combination with the commensals.

2016-06-05 | E-MTAB-4683 | biostudies-arrayexpress

Expression data from Senescence Process of citrus

Project description:The postharvest senescence processes of citrus fruits were analyzed transcriptomic. The present study was aimed to: further uncover the rind-flesh communication of hesperidium; characterize the differential storage behaviors of different citrus varieties; reveal the important changes during storing process; and demonstrate the specific non-climacteric characteristics of citrus fruits. We chose four major table fruit varieties of citrus: satsuma mandarin (Citrus unshiu Marc) (M), ponkan (Citrus reticulata Blanco) (K), newhall navel orange (Citrus sinensis L. Osbeck) (O) and shatian pummelo (Citrus grandis Osbeck) (P). They were sampled every 10 days during 50 DAH (days after harvest), almost covering the commercial storage period of loose-skin citrus.

2014-12-03 | E-GEOD-63706 | biostudies-arrayexpress

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