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Arabidopsis microRNA167 controls patterns of ARF6 and ARF8 expression, and regulates both female and male reproduction

Wu, Miin-Feng, Tian, Qing, Reed, Jason W.·2006·Development

Abstract

In flowering plants, diploid sporophytic tissues in ovules and anthers support meiosis and subsequent haploid gametophyte development. These analogous reproductive functions suggest that common mechanisms may regulate ovule and anther development. Two Arabidopsis Auxin Response Factors,ARF6 and ARF8, regulate gynoecium and stamen development in immature flowers. Wild-type pollen grew poorly in arf6 arf8 gynoecia, correlating with ARF6 and ARF8 expression in style and transmitting tract. ARF6 and ARF8 transcripts are cleavage targets of the microRNA miR167, and overexpressing miR167 mimicked arf6 arf8 phenotypes. Mutations in the miR167 target sites of ARF6 or ARF8 caused ectopic expression of these genes in domains of both ovules and anthers where miR167 was normally present. As a result, ovule integuments had arrested growth, and anthers grew abnormally and failed to release pollen. Thus, miR167 is essential for correct patterning of gene expression, and for fertility of both ovules and anthers. The essential patterning function of miR167 contrasts with cases from animals in which miRNAs reinforce or maintain transcriptionally established gene expression patterns.

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Metadata

Authors
Wu, M.-F., Tian, Q., & Reed, J. W.
Venue
Development
Published
2006-11-01
Volume
133
Issue
21
Pages
4211-4218
ISSN
  • 0950-1991 (ISSN-L)
  • 1477-9129
OpenAlex
W2096600985
Cited by
751
References
8
FWCI
21.69
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Arabidopsis microRNA167 controls patterns of ARF6 and ARF8 expression, and regulates both female and male reproduction. https://app.cochat.ai/papers/10.1242/dev.02602
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Wu, M.-F., Tian, Q., & Reed, J. W. (2006). Arabidopsis microRNA167 controls patterns of ARF6 and ARF8 expression, and regulates both female and male reproduction. Development. https://doi.org/10.1242/dev.02602

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