, a new species of Orchidaceae from Yunnan Province, China, is described and illustrated. It is morphologically similar to , but can be easily distinguished from the latter by having a rhombic epichile, long column (6.0-7.5 mm long), and a needle-shaped appendage (1.8-3.2 mm in length) at the base of the stigma. Identification key and colour photographs are provided. A preliminary risk-of-extinction assessment, according to the IUCN Red List Categories and Criteria, is given for the new species. The plastome of is 30464 bp in length with GC content approximately 24.8%, and the plastome does not contain some housekeeping genes, such as K, , or all photosynthesis genes. In addition, the plastome lacks an IR region. This indicates that the plastome is in the last stage of degradation.
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http://dx.doi.org/10.1016/j.pld.2021.06.001 | DOI Listing |
Front Nutr
December 2024
School of Life Science and Technology, Kunming University of Science and Technology, Kunming, China.
Introduction: (referred to Tianma in Chinese), the dried tuber of Bl. (Orchidaceae), is utilized as a medicine-food homology product. Sulfur fumigation is commonly employed in the processing of (GR).
View Article and Find Full Text PDFFolia Microbiol (Praha)
December 2024
Department of Economic Plants and Biotechnology, Yunnan Key Laboratory for Wild Plant Resources & Yunnan Key Laboratory for Fungal Diversity and Green Development, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, China.
The genus Armillaria (Basidiomycota, Agaricales, Physalacriaceae) comprises pathogenic fungi that cause root-rot disease in plants, as well as species with low pathogenicity, some of which are hosts of the fully mycoheterotrophic orchid plant Gastrodia elata (Orchidaceae). To investigate the mechanisms underlying such special interactions between Armillaria fungi and G. elata, it is crucial to establish genetic transformation platforms for the Armillaria fungi and G.
View Article and Find Full Text PDFFood Chem X
December 2024
Key Laboratory of Economic Plants and Biotechnology, Yunnan Key Laboratory for Wild Plant Resources, and State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People's Republic of China.
Despite being recognized as a specialty food in four Chinese provinces with established safety standards, Kimura et Migo (Orchidaceae) leaf physicochemical indices overlook vital flavonoid glycoside components. Given the inconsistency in flavonoid quality under current standards, we devised a quantitative analysis targeting vicenin 2, vicenin 3, rutin, and isoviolanthin. Our analysis revealed significant seasonal variations, with harvests yielding the highest total content of these four flavonoid glycosides in February (1.
View Article and Find Full Text PDFChin J Nat Med
November 2024
Key Laboratory of Functional Molecules Analysis and Biotransformation of Universities in Yunnan Province, Yunnan Characteristic Plant Extraction Laboratory, School of Chemical Science and Technology, Yunnan University, Kunming 650091, China; College of Traditional Chinese Medicine, Yunnan University of Chinese Medicine, Kunming 650500, China. Electronic address:
Three novel, highly oxygenated polyketides, multioketides A-C (1-3), and three previously described multioxidized aromatic polyketides (4-6), were isolated from an endophytic Penicillium sp. YUD17006 associated with Gastrodia elata. Their chemical structures were elucidated using extensive spectroscopic data, electronic circular dichroism calculations, and single X-ray diffraction analysis.
View Article and Find Full Text PDFInt J Biol Macromol
November 2024
Key Laboratory of Phytochemistry and Natural Medicines, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, Yunnan, People's Republic of China; Bio-Innovation Center of DR PLANT, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, Yunnan, People's Republic of China. Electronic address:
Based on structural elucidation of natural and hydrolyzed glycans, the general glycans profiling of D. officinale were unequivocally established for the first time as follows: The results indicated that the structure of D. officinale glycans with low degree of polymerization (DP ≤ 22) was linear α-D-1,4-glucan, whereas the structure of glycans with high degree of polymerization (DP > 24) was linear acetylated 1,4-glucomannan.
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