Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 540641
Title Functional analysis of the HD-Zip transcription factor genes Oshox12 and Oshox14 in rice
Author(s) Shao, Jingxia; Haider, Imran; Xiong, Lizhong; Zhu, Xiaoyi; Hussain, Rana Muhammad Fraz; Övernäs, Elin; Meijer, Annemarie H.; Zhang, Gaisheng; Wang, Mei; Bouwmeester, Harro J.; Ouwerkerk, Pieter B.F.
Source PLoS One 13 (2018)7. - ISSN 1932-6203
DOI https://doi.org/10.1371/journal.pone.0199248
Department(s) Laboratory of Plant Physiology
EPS
Publication type Refereed Article in a scientific journal
Publication year 2018
Abstract

The homeodomain-leucine zipper (HD-Zip) transcription factor family plays vital roles in plant development and morphogenesis as well as responses to biotic and abiotic stresses. In barley, a recessive mutation in Vrs1 (HvHox1) changes two-rowed barley to six-rowed barley, which improves yield considerably. The Vrs1 gene encodes an HD-Zip subfamily I transcription factor. Phylogenetic analysis has shown that the rice HD-Zip I genes Oshox12 and Oshox14 are the closest homologues of Vrs1. Here, we show that Oshox12 and Oshox14 are ubiquitously expressed with higher levels in developing panicles. Trans-activation assays in yeast and rice protoplasts demonstrated that Oshox12 and Oshox14 can bind to a specific DNA sequence, AH1 (CAAT(A/T)ATTG), and activate reporter gene expression. Overexpression of Oshox12 and Oshox14 in rice resulted in reduced panicle length and a dwarf phenotype. In addition, Oshox14 overexpression lines showed a deficiency in panicle exsertion. Our findings suggest that Oshox12 and Oshox14 may be involved in the regulation of panicle development. This study provides a significant advancement in understanding the functions of HD-Zip transcription factors in rice.

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