Differences in seasonal expression of flowering genes between deciduous trifoliate orange and evergreen Satsuma mandarin

Publication Overview
TitleDifferences in seasonal expression of flowering genes between deciduous trifoliate orange and evergreen Satsuma mandarin
AuthorsNishikawa F, Endo T, Shimada T, Fujii H, Shimizu T, Omura M
TypeJournal Article
Journal NameTree physiology
Volume29
Issue7
Year2009
Page(s)921-926
CitationNishikawa F, Endo T, Shimada T, Fujii H, Shimizu T, Omura M. Differences in seasonal expression of flowering genes between deciduous trifoliate orange and evergreen Satsuma mandarin. Tree physiology. 2009; 29(7):921-926.

Abstract

To determine differences in seasonal flowering between evergreen and deciduous woody perennials, endogenous expression of flowering-related genes was investigated in Satsuma mandarin (Citrus unshiu Marc.) and its close relative, trifoliate orange (Poncirus trifoliata (L.) Raf.), which are evergreen and deciduous, respectively, and show different seasonal flowering characteristics. In Satsuma mandarin, in which floral induction is triggered by low temperatures during fall and winter, mRNA levels of the citrus FLOWERING LOCUS T homologue CiFT increased during fall and winter, corresponding to the floral induction period, and mRNA levels of citrus LEAFY and SEPALLATA homologues (CsLFY and CuSEP) increased during early spring just before blooming. Citrus APETALA1 and FRUITFULL homologues (CsAP1 and CuFUL) did not show a significant association with seasonal flowering. In trifoliate orange, in which floral induction and flower bud development occur during early summer as in many deciduous trees, expression of CiFT, CsLFY, CsAP1, CuSEPs and CuFUL increased during early summer, corresponding to the period of floral induction and flower bud development. The CuSEPs expression peaked again during early spring just before blooming. In both species, the citrus TERMINAL FLOWER1 homologue (CsTFL), which acts as a floral repressor, showed low transcript levels during the period of floral induction and flower bud development. Thus, despite the difference in flowering season, in both species transcriptional changes in CiFT, CsLFY, CsTFL and CuSEPs were correlated with seasonal flowering. In contrast, the correspondence between CsAP1 and CuFUL expression and seasonal flowering differed between the species.
Features
This publication contains information about 9 features:
Feature NameUniquenameType
CiFTCiFTgenetic_marker
CsAP1CsAP1genetic_marker
CsLFYCsLFYgenetic_marker
CsTFLCsTFLgenetic_marker
CuFULCuFULgenetic_marker
CuSEP1CuSEP1genetic_marker
CuSEP3CuSEP3genetic_marker
EF1-a.1EF1-a.1genetic_marker
CiFT.1CiFT.1genetic_marker
Properties
Additional details for this publication include:
Property NameValue
Publication TypeJournal Article
Publication Date2009
Published Location|||
Language Abbreng
Keywordsgene expression, flowering, seasonal variation, woody plants, Citrus unshiu, Poncirus trifoliata, species differences, broadleaved evergreens, transcription (genetics), genes, sequence analysis, polymerase chain reaction, RNA, bud initiation, deciduous trees
Cross References
This publication is also available in the following databases:
DatabaseAccession
AGL: USDA National Agricultural LibraryAGL:4229279
PMID: PubMedPMID:19364704