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dc.contributor.authorPunchapat Sojikulen_US
dc.contributor.authorTreenut Saithongen_US
dc.contributor.authorSaowalak Kalapanulaken_US
dc.contributor.authorNuttapat Pisuttinusarten_US
dc.contributor.authorSiripan Limsirichaikulen_US
dc.contributor.authorMaho Tanakaen_US
dc.contributor.authorYoshinori Utsumien_US
dc.contributor.authorTetsuya Sakuraien_US
dc.contributor.authorMotoaki Sekien_US
dc.contributor.authorJarunya Narangajavanaen_US
dc.contributor.otherMahidol Universityen_US
dc.contributor.otherKing Mongkuts University of Technology Thonburien_US
dc.contributor.otherSilpakorn Universityen_US
dc.identifier.citationPlant Molecular Biology. Vol.88, No.6 (2015), 531-543en_US
dc.description.abstract© 2015, Springer Science+Business Media Dordrecht. Development of storage roots is a process associated with a phase change from cell division and elongation to radial growth and accumulation of massive amounts of reserve substances such as starch. Knowledge of the regulation of cassava storage root formation has accumulated over time; however, gene regulation during the initiation and early stage of storage root development is still poorly understood. In this study, transcription profiling of fibrous, intermediate and storage roots at eight weeks old were investigated using a 60-mer-oligo microarray. Transcription and gene expression were found to be the key regulating processes during the transition stage from fibrous to intermediate roots, while homeostasis and signal transduction influenced regulation from intermediate roots to storage roots. Clustering analysis of significant genes and transcription factors (TF) indicated that a number of phytohormone-related TF were differentially expressed; therefore, phytohormone-related genes were assembled into a network of correlative nodes. We propose a model showing the relationship between KNOX1 and phytohormones during storage root initiation. Exogeneous treatment of phytohormones N<sup>6</sup>-benzylaminopurine and 1-Naphthaleneacetic acid were used to induce the storage root initiation stage and to investigate expression patterns of the genes involved in storage root initiation. The results support the hypothesis that phytohormones are acting in concert to regulate the onset of cassava storage root development. Moreover, MeAGL20 is a factor that might play an important role at the onset of storage root initiation when the root tip becomes swollen.en_US
dc.rightsMahidol Universityen_US
dc.subjectAgricultural and Biological Sciencesen_US
dc.subjectBiochemistry, Genetics and Molecular Biologyen_US
dc.titleGenome-wide analysis reveals phytohormone action during cassava storage root initiationen_US
Appears in Collections:Scopus 2011-2015

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