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image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Plant Cell Reportsarrow_drop_down
image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
Plant Cell Reports
Article . 2011 . Peer-reviewed
License: Springer TDM
Data sources: Crossref
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Silencing of meiosis-critical genes for engineering male sterility in plants

Authors: Xiping, Wang; Stacy D, Singer; Zongrang, Liu;

Silencing of meiosis-critical genes for engineering male sterility in plants

Abstract

The potential for pollen-mediated transgene flow into wild or closely related species has provoked unease in terms of transgenic modification of agricultural plant species. One approach to remedy this situation in species whose seeds and fruits are not of particular value is to engineer male sterility into the transgenic lines. In this study, three meiosis-critical genes, namely AHP2, AtRAD51C and SWITCH1 (SWI), were chosen as silencing targets to test the feasibility of incorporating sterility into plants using an RNAi-based approach. Our results indicated that the silencing of each of these genes via hairpin RNA (termed AHPi, RAD51Ci and SWIi lines) in Arabidopsis thaliana yielded a proportion of transgenic plants exhibiting a similar 'partially sterile' phenotype in which less than 50% of pollen was viable. In addition, a 'sterile' phenotype was also evident in a minority of RAD51Ci and SWIi, but not AHPi, lines in which plants yielded no seeds and either produced inviable pollen (RAD51Ci lines) or displayed a complete absence of pollen (SWIi lines). This suggests that AtRAD51C and SWI may function at distinct stages of meiosis. Further analyses of SWIi lines demonstrated that the 'sterile' phenotype was associated with a substantial reduction in the level of targeted gene transcript in floral tissues and resulted from sterility of the male, but not female gametes. This work demonstrates that generating male sterility through the silencing of key genes involved in the regulation of meiosis is feasible, and its advantages and potential applications for transgene containment are discussed.

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Keywords

Plant Infertility, Arabidopsis Proteins, Cell Survival, Phosphotransferases, Arabidopsis, Nuclear Proteins, Cell Cycle Proteins, Flowers, Plants, Genetically Modified, Meiosis, Phenotype, Seeds, Pollen, RNA Interference, Gene Silencing, Pollination

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
12
Average
Average
Top 10%
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