Arabidopsis petiole torsions induced by lateral light or externally supplied auxin require microtubule-associated TORTIFOLIAl/SPIRAL2

DC FieldValueLanguage
dc.contributor.authorBorchers, A.
dc.contributor.authorDeckena, M.
dc.contributor.authorBuschmann, H.
dc.date.accessioned2021-12-23T16:02:21Z-
dc.date.available2021-12-23T16:02:21Z-
dc.date.issued2018
dc.identifier.issn0033183X
dc.identifier.urihttps://osnascholar.ub.uni-osnabrueck.de/handle/unios/5366-
dc.description.abstractAlthough rather inconspicuous, movements are an important adaptive trait of plants. Consequently, light- or gravity-induced movements leading to organ bending have been studied intensively. In the field, however, plant movements often result in organ twisting rather than bending. This study investigates the mechanism of light- or gravity-induced twisting movements, coined ``helical tropisms.'' Because certain Arabidopsis cell expansion mutants show organ twisting under standard growth conditions, we here investigated how the right-handed helical growth mutant tortifblial/spiral2 (torl) responds when stimulated to perform helical tropisms. When leaves were illuminated from the left, torl was capable of producing left-handed petiole torsions, but these occurred at a reduced rate. When light was applied from right, torl plants rotated their petioles much faster than the wild-type. Applying auxin to the lateral-distal side of wild-type petioles produced petiole torsions in which the auxinated flank was consistently turned upwards. This kind of movement was not observed in torl mutants when auxinated to produce left-handed movements. Investigating auxin transport in twisting petioles based on the DR5-marker suggested that auxin flow was apical-basal rather than helical. While cortical microtubules of excised wild-type petioles oriented transversely when stimulated with auxin, those of torl were largely incapable of reorientation. Together, our results show that tor/ is a tropism mutant and suggest a mechanism in which auxin and microtubules both contribute to helical tropisms.
dc.description.sponsorshipDFG (Deutsche Forschungsgemeinschaft)German Research Foundation (DFG) [BU 2301/2-1]; DFGGerman Research Foundation (DFG)European Commission [Sonderforschungsbereich 944]; The research was supported by a grant to H.B. by the DFG (Deutsche Forschungsgemeinschaft; BU 2301/2-1) and by the local Sonderforschungsbereich 944 (also DFG). We are also grateful to Sabine Zachgo for ongoing support.
dc.language.isoen
dc.publisherSPRINGER WIEN
dc.relation.ispartofPROTOPLASMA
dc.subjectAuxin
dc.subjectBLUE-LIGHT
dc.subjectCell Biology
dc.subjectCORTICAL MICROTUBULES
dc.subjectHELICAL GROWTH
dc.subjectMAIZE COLEOPTILES
dc.subjectMicrotubule
dc.subjectOUTER EPIDERMAL WALL
dc.subjectPetiole
dc.subjectPHOTOTROPISM
dc.subjectPlant Sciences
dc.subjectPROTEIN
dc.subjectREORIENTATION
dc.subjectROOT RESPONSES
dc.subjectTHALIANA
dc.subjecttortifolial/spiral2
dc.subjectTropism
dc.titleArabidopsis petiole torsions induced by lateral light or externally supplied auxin require microtubule-associated TORTIFOLIAl/SPIRAL2
dc.typejournal article
dc.identifier.doi10.1007/s00709-018-1247-8
dc.identifier.isiISI:000442727200020
dc.description.volume255
dc.description.issue5
dc.description.startpage1505
dc.description.endpage1515
dc.contributor.orcid0000-0003-3022-6150
dc.contributor.orcid0000-0003-2276-8371
dc.identifier.eissn16156102
dc.publisher.placeSACHSENPLATZ 4-6, PO BOX 89, A-1201 WIEN, AUSTRIA
dcterms.isPartOf.abbreviationProtoplasma
crisitem.author.deptFB 05 - Biologie/Chemie-
crisitem.author.deptidfb05-
crisitem.author.orcid0000-0003-3022-6150-
crisitem.author.parentorgUniversität Osnabrück-
crisitem.author.netidBuHe301-
Show simple item record

Page view(s)

7
Last Week
0
Last month
0
checked on Apr 21, 2024

Google ScholarTM

Check

Altmetric