Abstract
Bryophytes are among the simplest and oldest of the terrestrial plants. Due to the special living environment and characteristics, bryophytes have become attractive experimental tools for the elucidation of complex biological processes in plants. Mosses grow rapidly when cultured on simple salt media, thereby making them ideal materials for metabolic studies, particularly transformation and gene homologous recombination. Thus, in recent times mosses such as Physcomitrella patens, Funaria hygrometrica, Ceratodon purpureus, and Tortula ruralis are being developed for genetic engineering studies. Recently, the finding of efficient homologous recombination of P. patens and yeast and murine cells could be comparable. So, the moss, P. patens has become an extremely powerful organism for the functional analysis of plant genes. In this report, we reviewed recent research progress so far made on genetic transformation of the bryophytes with emphasis on P. patens. We also discussed the advantages and limitation of bryophytes transformation. Key words: Bryophytes, moss, genetic transformation, homologous recombination.
Highlights
Bryophytes, small green land plants, are among the oldest terrestrial organisms and appeared 4.5-5 million years ago
We reviewed recent research progress so far made on genetic transformation of the bryophytes with emphasis on P. patens
Like most plants, show an alternation of generations comprising of a free-living haploid gametophyte stage and a diploid Sporophyte stage, with the Sporophyte being parasitic on the gametophyte
Summary
Biotechnology Research Center of China Three Gorges University, Yichang Hubei 443002, China. Bryophytes are among the simplest and oldest of the terrestrial plants. Due to the special living environment and characteristics, bryophytes have become attractive experimental tools for the elucidation of complex biological processes in plants. Mosses grow rapidly when cultured on simple salt media, thereby making them ideal materials for metabolic studies, transformation and gene homologous recombination. In recent times mosses such as Physcomitrella patens, Funaria hygrometrica, Ceratodon purpureus, and Tortula ruralis are being developed for genetic engineering studies. The finding of efficient homologous recombination of P. patens and yeast and murine cells could be comparable. The moss, P. patens has become an extremely powerful organism for the functional analysis of plant genes. We reviewed recent research progress so far made on genetic transformation of the bryophytes with emphasis on P. patens.
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