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Gene Review:

DUO1 - R2R3 myb transcription factor DUO1

Arabidopsis thaliana

Synonyms: DUO POLLEN 1

Durbarry, A. et al., Rotman, N. et al.

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High impact information on DUO1

Here, we present the isolation of DUO1, a novel R2R3 MYB gene of Arabidopsis, as the first gene shown to control male gamete formation in plants [1].
Mutations in DUO1 produce a single larger diploid sperm cell unable to perform fertilization [1].
Male germ line development in Arabidopsis. duo pollen mutants reveal gametophytic regulators of generative cell cycle progression [2].
We describe two novel Arabidopsis (Arabidopsis thaliana) mutants, duo pollen1 (duo1) and duo pollen2 (duo2), in which generative cell division is blocked, resulting in the formation of bicellular pollen grains at anthesis. duo1 and duo2 map to different chromosomes and act gametophytically in a male-specific manner [2].
Mutant generative cells in duo1 pollen fail to enter mitosis at G2-M transition, whereas mutant generative cells in duo2 enter PMII but arrest at prometaphase [2].

Biological context of DUO1

DUO1 appears to be evolutionarily conserved in several plant species and defines a new subfamily of pollen-specific MYB genes [1].

References

A novel class of MYB factors controls sperm-cell formation in plants. Rotman, N., Durbarry, A., Wardle, A., Yang, W.C., Chaboud, A., Faure, J.E., Berger, F., Twell, D. Curr. Biol. (2005) [Pubmed]
Male germ line development in Arabidopsis. duo pollen mutants reveal gametophytic regulators of generative cell cycle progression. Durbarry, A., Vizir, I., Twell, D. Plant Physiol. (2005) [Pubmed]

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