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The total triterpene saponins of Psammosilene tunicoides have significant pharmacologic activity. Psammosilene tunicoides squalene synthase (PSS) is a gateway enzyme to regulate the biosynthesis of total triterpene saponins extracted from the root of Psammosilene tunicoides which is an endangered species. In this paper, cDNA encoding of PSS was cloned by(More)
Amomum tsaoko is a flexistylous ginger. Flexistyly is a unique floral mechanism promoting outcrossing, which is known only in some species of Zingiberaceae till date. This is a pioneer report on flexistyly in A. tsaoko from the aspect of fructification percentage to clarify its influence on reproduction. We observed in 2007 and 2008 that the fructification(More)
OBJECTIVE To study the anatomical structure of endangered alpine medical plant Neopicrorhiza scrophulariiflora and the high altitude adaptability. METHODS The leaf epidermis character as well as section structure of leaf, aerial stem and rhizome were observed by light microscopical technique. RESULTS The leaf surface of Neopicrorhiza scrophulariiflora(More)
The comparison between the growth of eight populations from Psammosilene tunicoides at Yunnan Province was made by the tissue culture. The initial results showed out two populations from Yunshanping (Lijiang) and Xiaomoyu (Kunming) was dominant than orthers. It would be regard as one of fine germplasm resources for the culture of Psammosilence tunicoides.
OBJECTIVE To lay the foundation for quality evaluation of medicinal materials of Amomum tsao-ko and its selection of fine varieties, the variation of percentage of volatile oil in the seeds among populations and individuals and its influencing factors were studied. METHODS Extracted volatile oil from the seeds according to the Chinese Pharmacopoeia,(More)
OBJECTIVE To study the difference of the quantitative multistate character of infructescence of Amomum tsao-ko from five populations, and the correlations between the quantitative multistate character and altitude, longitude and latitude. METHODS By observing and analyzing the quantitative multistate character of infructescence of Amomum tsao-ko from five(More)
OBJECTIVE To analyze the ribosomal ITS sequence variation of Psammosilene tuncolides W. C. Wu et C. Y. Wu from different populations, for identifying different local populations. METHODS A pair of primers of 18SP1 and 26SP2 with PCR technique had been applied to study the ITS sequences. RESULTS The sequences of ITS1, ITS2 and 5.8S are 225-229 bp,(More)
OBJECTIVE To explore the regulation of the growth of fruit of Amomum tsaoko and the factors influencing the weight of fruit. METHODS To compare and analyze the quantitative multistate character of fruit and seed of Amomum tsaoko. RESULTS The quantitative multistate character of fruit and seed of Amomum tsaoko in populations and between populations were(More)
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