Characterization of MADS genes in the gymnosperm Gnetum parvifolium and its implication on the evolution of reproductive organs in seed plants

Evolution & Development
S ShindoM Hasebe

Abstract

Gnetales, one of the extant gymnosperm orders, has traditionally been recognized to be most closely related to flowering plants, because the reproductive organ of Gnetales has some morphological characteristics similar to flowering plants. Most recent molecular phylogenetic studies do not support the sister relationship of the Gnetales and flowering plants, but instead support a close relationship between Gnetales and other extant gymnosperms. The MADS genes are transcription factors, some of which are involved in reproductive organ development in flowering plants. To resolve the discrepancy in phylogenetic inferences, and to provide insights into the evolution of reproductive organs in seed plants, four MADS genes (GpMADS1-4) were cloned from Gnetum parvifolium. GpMADS2 is likely to be a pseudogene and the other three genes were characterized. A MADS gene tree based on partial amino acid sequences showed that GpMADS3 is included in the AGL6 group, but the other two genes do not cluster with any previously reported MADS gene. The three GpMADS genes were expressed during the early stage of ovule development in the differentiating nucellus and three envelopes. A comparison of MADS gene expression among conifers, Gnetum, and flowe...Continue Reading

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Citations

Aug 31, 2011·Sexual Plant Reproduction·Mario CiaffiEnrico Porceddu
Sep 20, 2007·Science in China. Series C, Life Sciences·JinHui FanHuaiRui Shu
Nov 19, 2015·Frontiers in Plant Science·Daniel UddenbergAnnelie Carlsbecker
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Oct 27, 2004·The Plant Journal : for Cell and Molecular Biology·Annelie CarlsbeckerPeter Engström
May 29, 2009·The Plant Journal : for Cell and Molecular Biology·Stephen E SchauerUeli Grossniklaus
Nov 13, 2010·The Plant Journal : for Cell and Molecular Biology·Mi-Jeong YooDouglas E Soltis
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Jan 4, 2006·Gene·Mikao ShigyoMotomi Ito

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