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Auxin signaling and vascular cambium formation enables storage metabolism in cassava tuberous roots

dc.contributor.authorRüscher, D.
dc.contributor.authorGarcía, J.M.C.
dc.contributor.authorCarluccio, A.V.
dc.contributor.authorKlemens, P.A.
dc.contributor.authorGisel, A.
dc.contributor.authorStavolone, L.
dc.contributor.authorNeuhaus, H.E.
dc.contributor.authorLudewig, F.
dc.contributor.authorSonnewald, U.
dc.contributor.authorZierer, W.
dc.date.accessioned2021-04-22T10:05:10Z
dc.date.available2021-04-22T10:05:10Z
dc.date.issued2021
dc.identifier.citationRüscher, D., García, J.M.C., Carluccio, A.V., Klemens, P.A., Gisel, A., Stavolone, L., ... & Zierer, W. (2021). Auxin signaling and vascular cambium formation enables storage metabolism in cassava tuberous roots. Journal of Experimental Botany, 1-33.
dc.identifier.issn0022-0957
dc.identifier.urihttps://hdl.handle.net/20.500.12478/7099
dc.description.abstractCassava storage roots are among the most important root crops worldwide and represent one of the most consumed staple foods in Sub-Saharan Africa. The vegetatively propagated tropical shrub can form many starchy tuberous roots from its stem. These storage roots are formed through the activation of secondary root growth processes. However, the underlying genetic regulation of storage root development is largely unknown. Here we report on distinct structural and transcriptional changes occurring during the early phases of storage root development. A pronounced increase in auxin-related transcripts and the transcriptional activation of secondary growth factors, as well as a decrease in gibberellin-related transcripts was observed during the early stages of secondary root growth. This was accompanied by increased cell wall biosynthesis, increased most notably during the initial xylem expansion within the root vasculature. Starch storage metabolism was activated only after the formation of the vascular cambium. The formation of nonlignified xylem parenchyma cells and the activation of starch storage metabolism coincided with increased expression of the KNOX/BEL genes KNAT1, PENNYWISE and POUND-FOOLISH, indicating their importance for proper xylem parenchyma function.
dc.description.sponsorshipBill & Melinda Gates Foundation
dc.format.extent1-33
dc.language.isoen
dc.subjectCassava
dc.subjectAuxins
dc.subjectDevelopment
dc.subjectGibberellins
dc.subjectParenchyma
dc.subjectRoots
dc.subjectStarch
dc.subjectStorage
dc.subjectXylem
dc.titleAuxin signaling and vascular cambium formation enables storage metabolism in cassava tuberous roots
dc.typeJournal Article
cg.contributor.crpRoots, Tubers and Bananas
cg.contributor.affiliationFriedrich-Alexander-University Erlangen-Nuremberg
cg.contributor.affiliationInternational Institute of Tropical Agriculture
cg.contributor.affiliationTechnical University Kaiserslautern
cg.contributor.affiliationInstitute for Sustainable Plant Protection, Italy
cg.contributor.affiliationInstitute for Biomedical Technologies, Italy
cg.coverage.regionAfrica
cg.coverage.regionWest Africa
cg.coverage.countryNigeria
cg.coverage.hubHeadquarters and Western Africa Hub
cg.researchthemeBiotech and Plant Breeding
cg.identifier.bibtexciteidRUSCHER:2021
cg.isijournalISI Journal
cg.authorship.typesCGIAR and advanced research institute
cg.iitasubjectAgronomy
cg.iitasubjectCassava
cg.iitasubjectHandling, Transport, Storage and Protection of Agricultural Products
cg.iitasubjectPlant Breeding
cg.iitasubjectPlant Production
cg.journalJournal of Experimental Botany
cg.notesOpen Access Article; Published online: 13 Mar 2021
cg.accessibilitystatusOpen Access
cg.reviewstatusPeer Review
cg.usagerightslicenseCreative Commons Attribution 4.0 (CC BY 0.0)
cg.targetaudienceScientists
cg.identifier.doihttps://dx.doi.org/10.1093/jxb/erab106
cg.iitaauthor.identifierAnna Vittoria Carluccio: 0000-0001-6887-5792
cg.iitaauthor.identifierANDREAS GISEL: 0000-0001-7218-9488
cg.iitaauthor.identifierLIVIA STAVOLONE: 0000-0002-0691-1302
cg.futureupdate.descriptionvol; issue and page number
cg.futureupdate.requiredYes
cg.futureupdate.duration3 Months


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