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An Arabidopsis flavonoid transporter is required for anther dehiscence and pollen development

Thompson, E P and Wilkins, C and Demidchik, Vadim and Davies, Julia M and Glover, B J (2010) 'An Arabidopsis flavonoid transporter is required for anther dehiscence and pollen development.' Journal of Experimental Botany, 61 (2). pp. 439-451. ISSN 0022-0957

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Abstract

FLOWER FLAVONOID TRANSPORTER (FFT) encodes a multidrug and toxin efflux family transporter in Arabidopsis thaliana. FFT (AtDTX35) is highly transcribed in floral tissues, the transcript being localized to epidermal guard cells, including those of the anthers, stigma, siliques and nectaries. Mutant analysis demonstrates that the absence of FFT transcript affects flavonoid levels in the plant and that the altered flavonoid metabolism has wide-ranging consequences. Root growth, seed development and germination, and pollen development, release and viability are all affected. Spectrometry of mutant versus wild-type flowers shows altered levels of a glycosylated flavonol whereas anthocyanin seems unlikely to be the substrate as previously speculated. Thus, as well as adding FFT to the incompletely described flavonoid transport network, it is found that correct reproductive development in Arabidopsis is perturbed when this particular transporter is missing.

Item Type: Article
Uncontrolled Keywords: Anther fertility flavonoid MATE transporter nectary pollen
Subjects: Q Science > QH Natural history > QH301 Biology
Divisions: Faculty of Science and Health > Biological Sciences, School of
Depositing User: Jim Jamieson
Date Deposited: 11 Oct 2011 15:14
Last Modified: 12 Oct 2011 12:22
URI: http://repository.essex.ac.uk/id/eprint/1090

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