NDLI: SAUR53 regulates organ elongation and apical hook development in Arabidopsis

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SAUR53 regulates organ elongation and apical hook development in Arabidopsis

Content Provider	Scilit
Author	Kathare, Praveen Kumar Dharmasiri, Sunethra Dharmasiri, Nihal
Copyright Year	2018
Description	SAUR53 is a member of SAUR (Small Auxin-Up RNA) gene family of primary auxin responsive genes. In Arabidopsis, SAUR gene family is represented by 81 genes including two pseudogenes; however, the functions of most of these genes are not fully characterized yet. In the present study, we show that SAUR53 expresses throughout the plant and localizes to both plasma membrane and the nucleus. Unlike most other SAUR genes, expression of SAUR53 is not induced in response to auxin. Ectopic expression of SAUR53 results in the elongation of cells and organs, and also interferes with normal apical hook development by accelerating the hook maintenance phase. Moreover, root growth of SAUR53 overexpression seedlings is significantly insensitive to IAA and 2,4-D, while showing wild-type sensitivity to NAA, suggesting that elevated level of SAUR53 may interfere with normal auxin transport. Collectively, this study indicates that while SAUR53 positively regulates cell and organ elongation, it probably negatively regulates auxin transport in Arabidopsis.
Related Links	https://www.tandfonline.com/doi/pdf/10.1080/15592324.2018.1514896?needAccess=true https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6204813/pdf
e-ISSN	15592324
DOI	10.1080/15592324.2018.1514896
Journal	Plant signaling & behavior
Issue Number	10
Volume Number	13
Language	English
Publisher	Informa UK Limited
Publisher Date	2018-10-03
Access Restriction	Open
Subject Keyword	Journal: Plant Signaling & Behavior Plant Sciences Auxin Saur Apical Hook Development Organ Elongation Auxin Transport
Content Type	Text
Resource Type	Article

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