The plant Rhodiola crenulata is a perennial herbaceous species distributed in the plateau region of southwestern China, especially the Hengduan Mountains region. It has been one of the most important traditional herbal remedies in Tibet for more than one thousand years, but the accelerated and uncontrolled collection of this plant since the 1980s has lead to deforestation. We used inter-simple ...

The essential oils from rhizomes of Rhodiola crenulata and R. fastigiata in eastern Tibet were analyzed by using GC-MS. The major constituents were geraniol (53.3%), n-octanol (13.4%), 2-methyl-3-buten-2-ol (10.8%), citronellol (5.3%), 3-methyl-2-buten-1-ol (4.0%), myteol (3.0%), and linalool (2.4%) for R. crenulata and geraniol (45.3%), n-octanol (12.3%), 2-methyl-3-buten-2-ol (8.0%), linalool...

Taxonomic assessment of two species of Rhodiola, Rhodiola crenulata and Rhodiola fastigiata was carried out and compared with two famous species, Rhodiola rosea and Rhodiola pachyclados. HPLC and Fourier Transform Near-Infrared (FT-NIR) spectroscopy techniques with the discriminant analysis and partial least squares regression (PLS) analysis were used for identification, classification, standar...

The Bogomolov-Tian-Todorov theorem ([10] and [12]) states that a non-singular n-fold X with c 1 (X) = 0 has unobstructed deformation theory, i.e. the moduli space of X is non-singular. This theorem was reproven using algebraic methods by Ran in [7]. Since then, it has been proven for Calabi-Yau n-folds with various mild forms of isolated singularities: ordinary double points by Kawamata [5] and...

We give a completely algebraic proof of the Bogomolov-Tian-Todorov theorem. More precisely, we shall prove that if X is a smooth projective variety with trivial canonical bundle defined over an algebraically closed field of characteristic 0, then the L∞-algebra governing infinitesimal deformations of X is quasi-isomorphic to an abelian differential graded Lie algebra.

Tyrosine decarboxylase initializes salidroside biosynthesis. Metabolic characterization of tyrosine decarboxylase gene from Rhodiola crenulata (RcTYDC) revealed that it played an important role in salidroside biosynthesis. Recombinant 53 kDa RcTYDC converted tyrosine into tyramine. RcTYDC gene expression was induced coordinately with the expression of RcUDPGT (the last gene involved in salidros...

BACKGROUND Rhodiola crenulata is traditionally used as a folk medicine in Tibet for preventing high-altitude illnesses, including sudden cardiac death (SCD). The cardio-protective effects of Rhodiola crenulata root extract (RCE) against hypoxia in vivo have been recently confirmed. However, the way in which RCE produces these effects remains unclear. The present study is designed to confirm the...

Acetabularia (Dasycladales) is an extant genus of a single-celled green alga. There are four species this reported from India, three Andaman and Nicobar Islands. For study, isolate was collected rocky intertidal habitat in the Light microscopy Scanning Electron Microscopy were used for morphological characterization. The distinct traits caps thalli prioritized because, traditionally, delimitati...

Algal preparations from Acetabularia crenulata were analyzed for their fatty acid composition to establish the suitability of this alga as a model to study fatty acid oxidation and oxylipin biosynthesis. The work was based on two goals. The first goal of this study was to determine the contribution of fatty acids from contaminating bacteria and how this influenced the total fatty acid compositi...