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    Effect of D-ring C-3’ methylation of strigolactone analogs on their transcription regulating activity in rice

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    Name:
    Jamil et al. Plant signalling Behavior-accepted manuscript.pdf
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    Accepted Manuscript
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    Type
    Article
    Authors
    Jamil, Muhammad cc
    Haider, Imran cc
    Kountche, Boubacar Amadou cc
    Al-Babili, Salim cc
    KAUST Department
    Biological and Environmental Sciences and Engineering (BESE) Division
    Plant Science
    Desert Agriculture Initiative
    Date
    2019-09-25
    Embargo End Date
    2020-09-25
    Permanent link to this record
    http://hdl.handle.net/10754/656924
    
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    Abstract
    Strigolactones (SLs) are a well-known class of plant hormones, which are involved in a number of developmental and adaptation processes and mediate different interspecific interactions. In spite of the growing knowledge on SL biosynthesis and signal transduction, effects of structural modifications on the activity and efficiency of SLs and their analogs remain largely elusive. SLs are characterized by the presence of a lactone ring (D-ring) that is connected by an enol ether bridge to a second moiety. In this study, we investigated the effect of additional D-ring methylation of SL analogs on their transcription regulating activity. For this purpose, we compared the SL analogs MP13 and AR8, which differ only by the presence of a methyl group at the C-3ʹ atom in the latter. Transcription regulating activity was determined by quantitative real-time PCR measurement of transcript levels of SL-dependent, feed-back regulated genes in treated wild type and ccd7 mutant rice seedlings. Results obtained indicate that C-3ʹ methylation reduces the transcription regulating activity, as shown by the more pronounced suppression of the SL biosynthesis genes DWARF27 (D27) and CAROTENOID CLEAVAGE DIOXYGENASES (CCD7 and CCD8) and higher induction of the SL signaling repressor gene DWARF53 (D53) in MP13 treated seedlings. These results are consistent with a recent study on the biological activities of MP13 and AR8.
    Citation
    Jamil, M., Haider, I., Kountche, B. A., & Al-Babili, S. (2019). Effect of D-ring C-3’ methylation of strigolactone analogs on their transcription regulating activity in rice. Plant Signaling & Behavior, 1668234. doi:10.1080/15592324.2019.1668234
    Sponsors
    This work was supported by the Bill and Melinda Gates Foundation [OPP1136424]; King Abdullah University of Science and Technology (KAUST), Saudi Arabia.
    Publisher
    Informa UK Limited
    Journal
    Plant Signaling & Behavior
    DOI
    10.1080/15592324.2019.1668234
    Additional Links
    https://www.tandfonline.com/doi/full/10.1080/15592324.2019.1668234
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    • [Dataset]
      Jamil, M., Haider, I., Boubacar A. Kountche, & Al-Babili, S. (2019). Effect of D-ring C-3’ methylation of strigolactone analogs on their transcription regulating activity in rice [Data set]. Taylor & Francis. https://doi.org/10.6084/M9.FIGSHARE.9901313. DOI: 10.6084/m9.figshare.9901313 Handle: 10754/664784
    ae974a485f413a2113503eed53cd6c53
    10.1080/15592324.2019.1668234
    Scopus Count
    Collections
    Articles; Biological and Environmental Sciences and Engineering (BESE) Division; Desert Agriculture Initiative

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