Journal Article

A MADS-box gene of <i>Populus deltoides</i> expressed during flower development and in vegetative organs

Bingyu Zhang, Xiaohua Su and Xiangming Zhou

in Tree Physiology

Volume 28, issue 6, pages 929-934
Published in print June 2008 | ISSN: 0829-318X
Published online June 2008 | e-ISSN: 1758-4469 | DOI: http://dx.doi.org/10.1093/treephys/28.6.929
A MADS-box gene of Populus deltoides expressed during flower development and in vegetative organs

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A MADS-box gene (PdPI) was isolated from a cDNA library constructed from male flower buds of Populus deltoides Bartr. ex Marsh. According to an analysis of genomic DNA structure and putative protein structure, and a phylogenetic study, PdPI is an ortholog of the Arabidopsis PI gene. Relative-quantitative real-time polymerase chain reaction analysis showed that PdPI has a broader expression pattern than PI in Arabidopsis. PdPI was strongly expressed in floral buds and roots and weakly expressed in immature xylem, leaves and apical buds of the male P. deltoides tree. In male inflorescences, PdPI expression was abundant in the perianth and anther, and weak in the peduncle and mature pollen. The large differences in PdPI expression at various phases of male floral bud development were closely related to the development of flower organs (perianth and stamen) and pollen. PdPI was also expressed in female inflorescences. Our results suggest that PdPI has multiple functions in the development of P. deltoides.

Keywords: floral development; relative-quantitative real-time PCR; transcription factor; transgene flow

Journal Article.  0 words. 

Subjects: Plant Sciences and Forestry

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