R
Robert J. Schaffer
Researcher at University of Auckland
Publications - 80
Citations - 5733
Robert J. Schaffer is an academic researcher from University of Auckland. The author has contributed to research in topics: Ripening & Malus. The author has an hindex of 34, co-authored 74 publications receiving 4897 citations. Previous affiliations of Robert J. Schaffer include Plant & Food Research & John Innes Centre.
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Journal ArticleDOI
The late elongated hypocotyl Mutation of Arabidopsis Disrupts Circadian Rhythms and the Photoperiodic Control of Flowering
Robert J. Schaffer,Nicola Ramsay,Alon Samach,Sally Corden,Joanna Putterill,Isabelle A. Carré,George Coupland +6 more
TL;DR: The dominant late elongated hypocotyl (lhy) mutation of Arabidopsis disrupted circadian clock regulation of gene expression and leaf movements and caused flowering to occur independently of photoperiod.
Journal ArticleDOI
Microarray Analysis of Diurnal and Circadian-Regulated Genes in Arabidopsis
Robert J. Schaffer,Jeff Landgraf,Monica Accerbi,Vernadette Simon,Matthew D. Larson,Ellen Wisman +5 more
TL;DR: By clustering microarray data from 47 additional nonrelated experiments, these groups contained the already characterized clock-associated genes LHY, CCA1, and GI, suggesting that other key circadian clock genes might be found within these clusters.
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A dynamic interplay between phytohormones is required for fruit development, maturation, and ripening.
Peter A. McAtee,Peter A. McAtee,Siti Karim,Siti Karim,Robert J. Schaffer,Robert J. Schaffer,Karine M. David +6 more
TL;DR: During this period there is a major switch in relative hormone levels of the fruit, involving an overall decrease in auxin, gibberellin, and cytokinin and a simultaneous increase in abscisic acid and ethylene.
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A genomics approach reveals that aroma production in apple is controlled by ethylene predominantly at the final step in each biosynthetic pathway
Robert J. Schaffer,Ellen N. Friel,Edwige J. F. Souleyre,Karen Bolitho,Kate Thodey,Susan E. Ledger,Judith H. Bowen,Jun-Hong Ma,Bhawana Nain,Daniel Cohen,Andrew P. Gleave,Ross N. Crowhurst,Bart J. Janssen,Jia-Long Yao,Richard D. Newcomb +14 more
TL;DR: This analysis suggests that the initial and final enzymatic steps with the biosynthetic pathways are important transcriptional regulation points for aroma production in apple.
Journal ArticleDOI
Environmental regulation of leaf colour in red 35S:PAP1 Arabidopsis thaliana.
Daryl D. Rowan,Mingshu Cao,Kui Lin-Wang,Janine M. Cooney,Dwayne J. Jensen,P. T. Austin,Martin B. Hunt,Cara Norling,Roger P. Hellens,Robert J. Schaffer,Andrew C. Allan +10 more
TL;DR: High-temperature, low-light (HTLL) treatment of 35S:PAP1 Arabidopsis thaliana over-expressing the PAP1 (Production of Anthocyanin Pigment 1) gene results in reversible reduction of red colouration, suggesting the action of additional anthocyan in regulators.