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Abstract Detail


Systematics Section / ASPT

Yamazaki, Tsuneyuki [1], Kim, Hong Nam [2].

Polyphyletic origin of land plants: Bryophytes are fungi with chloroplasts.

BRYOPHYTES are generally considered to be derived from some algae and ancestors of ferns leading to higher plants.Our molecular studies of a slow evolving nuclear gene, histone 3, clearly show that protein sequences of histone 3 in various bryophytes including liverworts, mosses, and hornworts are similar to those of fungi, but different from those of other land plants. This result shows that there are two diferent possibilities; One is that bryophytes are derived from fungi by independent symbiosis with chloroplasts, the other is horizontal transfer of histone 3 genes before divergence of bryophytes to different classes. We will discuss possible hypotheses about this extraordinary events.


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1 - Research Institute of Ebolutionary Biology, 1-5-5 Izumigaoka, Munakata, Fukuoka, 811-4142, Japan
2 - Jeonju University, The Centter for EM Research and Development, 1200, 3Ga, Hyoja-Dong, Wansan-Ku, Jeonju-City, Jeonbuk, 560-759, Korea

Keywords:
polyphyletic origin of land plants
bryophytes
Histone 3.

Presentation Type: Poster:Posters for Sections
Session: 48-138
Location: Auditorium/Bell Memorial Union
Date: Tuesday, August 1st, 2006
Time: 12:30 PM
Abstract ID:51


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