Journal Article

Expression of the Floral B-function Gene <i>SLM2</i> in Female Flowers of <i>Silene latifolia</i> Infected with the Smut Fungus <i>Microbotryum violaceum</i>

Yusuke Kazama, Ayako Koizumi, Wakana Uchida, Amr Ageez and Shigeyuki Kawano

in Plant and Cell Physiology

Published on behalf of Japanese Society of Plant Physiologists

Volume 46, issue 5, pages 806-811
Published in print May 2005 | ISSN: 0032-0781
Published online May 2005 | e-ISSN: 1471-9053 | DOI: http://dx.doi.org/10.1093/pcp/pci080
Expression of the Floral B-function Gene SLM2 in Female Flowers of Silene latifolia Infected with the Smut Fungus Microbotryum violaceum

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Silene latifolia is a dioecious plant in which sex is determined by X and Y chromosomes. Expression of the B-function gene SLM2, an ortholog of PISTILLATA (PI) in Arabidopsis, was examined by in situ hybridization. SLM2 was not expressed in suppressed stamens of female flowers, but was expressed in developing stamens of smut-infected female flowers. These results indicate that the control of SLM2 is independent of the presence of the Y chromosome. Smut-infected females provide a useful system for clarifying the relationship between the B-function gene and the sex determination factor.

Keywords: Dioecious plant; Flower development; Microbotryum violaceum; PISTILLATA; Silene latifolia; Smut fungus; DIG, digoxigenin; PBS, phosphate-buffered saline; PCR, polymerase chain reaction

Journal Article.  3696 words.  Illustrated.

Subjects: Biochemistry ; Molecular and Cell Biology ; Plant Sciences and Forestry

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