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Transcriptional changes in potato in response to defence hormones

ABSTRACT: Phytohormones are involved in diverse aspects of plant life including the regulation of plant growth, development and reproduction, as well as governing stress and defence responses. We have generated a comprehensive transcriptional reference map of the early potato responses to exogenous application of the defence hormones abscisic acid, brassinosteroid, ethylene, salicylic acid and jasmonic acid. Amongst microarray probes representing the 39000 predicted genes, a total of 3175 and 2873 probes were significantly differentially expressed at 1 h and 6 h after hormone treatment, respectively. Marker genes identified for the early hormone responses in potato include: a homeodomain 20 transcription factor (DMG400000248) for abscisic acid; a SAUR gene (DMG400016561) induced in Epibrassinolide treated plants at 6 hours; an osmotin gene (DMG400003057) specifically enhanced by the ethylene precursor aminocyclopropanecarboxylic acid; a gene weakly similar to AtWRKY40 (DMG402007388) that was induced by salicylic acid and; a jasmonate ZIM-domain protein 1 (DMG400002930) which was specifically activated by methyl jasmonate. An online database has been set up to query the expression patterns of potato genes represented on the microarray that can also incorporate future microarray or RNAseq-based expression studies.

INSTRUMENT(S): Agilent G2505B scanner.

ORGANISM(S): Solanum tuberosum

SUBMITTER: Pete Hedley

PROVIDER: E-MTAB-3542 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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