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BIN2/DWF12 Antagonistically Transduces Brassinosteroid and Auxin Signals in the Roots of Arabidopsis
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dc.contributor.author | Maharjan, Puna Maya | - |
dc.contributor.author | Schulz, Burkhard | - |
dc.contributor.author | Choe, Sunghwa | - |
dc.date.accessioned | 2011-12-08T01:38:02Z | - |
dc.date.available | 2011-12-08T01:38:02Z | - |
dc.date.issued | 2011-04-01 | - |
dc.identifier.citation | JOURNAL OF PLANT BIOLOGY; Vol.54 2; 126-134 | - |
dc.identifier.issn | 1226-9239 | - |
dc.identifier.uri | https://hdl.handle.net/10371/75074 | - |
dc.description.abstract | Plant growth-stimulating hormones brassinosteroids (BRs) function via interactions with other hormones. However, the mechanism of these interactions remains to be elucidated. The unique phenotypes of brassinosteroid insensitive2/dwarf12-D (bin2/dwf12-D) mutants, such as twisted inflorescences and leaves, suggested that BIN2, a negative regulator of BR signaling, may be involved in auxin signaling. Furthermore, previously, we showed that auxin stimulates DWF4 expression. To determine the possible role of BIN2/DWF12 in Auxin signaling, we measured DWARF4pro:GUS activity through both GUS histochemical staining and in vivo GUS assay. We found that the GUS activity in the bin2/dwarf12-1D background dramatically increased relative to control. In addition, the number of lateral roots (LR) in bin2/dwf12-1D was greater than wild type, and the optimal concentration for auxin-mediated lateral root induction was lower in bin2/dwf12-1D; these findings suggest that BIN2 plays a positive role in auxin signaling. In contrast, ABA repressed both DWF4pro:GUS expression and lateral root development. However, the degree of repression was lower in bin2/dwf12-1D background, suggesting that BIN2 plays a role in ABA-mediated DWF4pro:GUS expression and subsequently in lateral root development, too. Therefore, it is likely that BIN2 plays a role of signal integrator for multiple hormones, such as BRs, auxin, and ABA. | - |
dc.language.iso | en | - |
dc.publisher | SPRINGER | - |
dc.subject | Brassinosteroids | - |
dc.subject | Auxin | - |
dc.subject | ABA | - |
dc.subject | BIN2 | - |
dc.subject | DWF4 | - |
dc.subject | Lateral root | - |
dc.subject | DWF4 pro:GUS | - |
dc.title | BIN2/DWF12 Antagonistically Transduces Brassinosteroid and Auxin Signals in the Roots of Arabidopsis | - |
dc.type | Article | - |
dc.contributor.AlternativeAuthor | 조성화 | - |
dc.identifier.doi | 10.1007/s12374-010-9138-3 | - |
dc.citation.journaltitle | JOURNAL OF PLANT BIOLOGY | - |
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dc.description.tc | 1 | - |
dc.identifier.wosid | 000288263000007 | - |
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