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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	Whipple CJ [ Show all 6 ]
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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