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GrainGenes Reference Report: DEV-131-6083

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Reference	DEV-131-6083
Title	Conservation of B-class floral homeotic gene function between maize and Arabidopsis.
Journal	Development
Year	2004
Volume	131
Pages	6083-6091
Author	[ Hide all but 1 of 6 ] Whipple CJ Ciceri P Padilla CM Ambrose BA Bandong SL Schmidt RJ
Abstract	The ABC model of flower development, established through studies in eudicot model species, proposes that petal and stamen identity are under the control of B-class genes. Analysis of B- and C-class genes in the grass species rice and maize suggests that the C- and B-class functions are conserved between monocots and eudicots, with B-class genes controlling stamen and lodicule development. We have undertaken a further analysis of the maize B-class genes Silky1 , the putative AP3 orthologue, and Zmm16 , a putative PI orthologue, to compare their function with the Arabidopsis thaliana B-class genes. Our results show that maize B-class proteins interact in vitro to bind DNA as an obligate heterodimer, as do A. thaliana B-class proteins. The maize proteins also interact with the appropriate A. thaliana B-class partner proteins to bind DNA. Furthermore, we show that maize B-class genes are capable of rescuing the corresponding A. thaliana B-class mutant phenotypes. This demonstrates B-class activity of the maize gene Zmm16 , and provides compelling evidence that B-class gene function is conserved between monocots and eudicots
Keyword	arabidopsis thaliana [ Show all 20 ]

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