| polyphenols from the heartwood of cercidiphyllum japonicum and their effects on proliferation of mouse hair epithelial cells. | the methanol extract of heartwood of cercidiphyllum japonicum (cercidiphyllaceae) stimulated proliferation of mouse hair epithelial cells, similar to minoxidil and procyanidin b-2. (+)-taxifolin ( 2), quercetin ( 3), myricetin ( 4), (+)-dihydromyricetin ( 5) and gallic acid ( 6) were isolated from c. japonicum and showed significant proliferative activities on the hair epithelial cells. | 2002 | 12451489 |
| anti-ice nucleation activity in xylem extracts from trees that contain deep supercooling xylem parenchyma cells. | boreal hardwood species, including japanese white birch (betula platyphylla sukat. var. japonica hara), japanese chestnut (castanea crenata sieb. et zucc.), katsura tree (cercidiphyllum japonicum sieb. et zucc.), siebold's beech (fagus crenata blume), mulberry (morus bombycis koidz.), and japanese rowan (sorbus commixta hedl.), had xylem parenchyma cells (xpcs) that adapt to subfreezing temperatures by deep supercooling. crude extracts from xylem in all these trees were found to have anti-ice nu ... | 2007 | 17936742 |
| rhodococcus cercidiphylli sp. nov., a new endophytic actinobacterium isolated from a cercidiphyllum japonicum leaf. | an endophytic actinobacterium, designated yim 65003(t), was isolated from a surface sterilized leaf sample of cercidiphyllum japonicum collected from yunnan province, south-west china. the morphological and chemotaxonomic properties of the isolate were typical of members of the genus rhodococcus. analysis of the 16s rrna gene sequence revealed that the isolate was most closely related to rhodococcus fascians dsm 20669(t) (99.6%) and rhodococcus yunnanensis yim 70056(t) (99.0%). dna-dna hybridiza ... | 2008 | 18485653 |
| [c and n allocation patterns in planted forests and their release patterns during leaf litter decomposition in subalpine area of west sichuan]. | with the planted forest ecosystems of cercidiphyllum japonicum, betula utilis, pinus yunnansinsis, and picea asperata in subalpine area of west sichuan as test objects, their total biomass and the c and n contents in soils and tree organs were determined. the results showed that the allocation of c in tree organs had less correlation with the age of the organs, while that of n and c/n ratio had closer relationship with the age. the n content in young organs was higher than that in aged ones, whe ... | 2009 | 19449557 |
| vulnerability to cavitation differs between current-year and older xylem: non-destructive observation with a compact magnetic resonance imaging system of two deciduous diffuse-porous species. | development of xylem embolism during water stress in two diffuse-porous hardwoods, katsura (cercidiphyllum japonicum) and japanese white birch (betula platyphylla var. japonica), was observed non-destructively under a compact magnetic resonance imaging (mri) system in addition to conventional quantitation of hydraulic vulnerability to cavitation from excised stem segments. distribution of white and dark areas in mr images corresponded well to the distribution of water-filled/embolized vessels ob ... | 2015 | 25630712 |
| incongruent range dynamics between co-occurring asian temperate tree species facilitated by life history traits. | postglacial expansion to former range limits varies substantially among species of temperate deciduous forests in eastern asia. isolation hypotheses (with or without gene flow) have been proposed to explain this variance, but they ignore detailed population dynamics spanning geological time and neglect the role of life history traits. using population genetics to uncover these dynamics across their asian range, we infer processes that formed the disjunct distributions of ginkgo biloba and the co ... | 2016 | 27069572 |
| anatomy and lignin distribution in reaction phloem fibres of several japanese hardwoods. | although tension wood formation and the structure of gelatinous fibres (g-fibres) have been widely investigated, studies of the influence of the reaction phenomenon on phloem fibres have been few and incomplete in comparison with those of xylem wood fibres. this study was undertaken to clarify the influence of stem inclination on phloem fibres using several japanese hardwood species that produce different g-fibre types in tension wood. | 2012 | 22778147 |
| presence of supercooling-facilitating (anti-ice nucleation) hydrolyzable tannins in deep supercooling xylem parenchyma cells in cercidiphyllum japonicum. | xylem parenchyma cells (xpcs) in trees adapt to subzero temperatures by deep supercooling. our previous study indicated the possibility of the presence of diverse kinds of supercooling-facilitating (scf; anti-ice nucleation) substances in xpcs of katsura tree (cercidiphyllum japonicum), all of which might have an important role in deep supercooling of xpcs. in the previous study, a few kinds of scf flavonol glycosides were identified. thus, in the present study, we tried to identify other kinds ... | 2012 | 22038380 |
| new microsatellite markers for the rare plant cercidiphyllum japonicum and their utility for cercidiphyllum magnificum. | | 2010 | 21616894 |
| analysis of supercooling-facilitating (anti-ice nucleation) activity of flavonol glycosides. | deep supercooling xylem parenchyma cells (xpcs) of katsura tree (cercidiphyllum japonicum) contain four kinds of flavonol glycosides with high supercooling-facilitating (anti-ice nucleation) activities. these flavonol glycosides have very similar structures, but their supercooling-facilitating activities are very different. in this study, we analyzed the supercooling-facilitating activities of 12 kinds of flavonol glycosides in order to determine the chemical structures that might affect superco ... | 2010 | 20040364 |
| a yellow chlorophyll catabolite is a pigment of the fall colours. | here we describe the detection and identification of a yellow chlorophyll catabolite (cj-ycc) in fresh extracts of senescent leaves of cercidiphyllum japonicum. in addition, we report its partial synthesis by oxidation of cj-ncc-1, the major (colourless) "nonfluorescent" chlorophyll catabolite (ncc) found in degreened leaves of c. japonicum. the spectroscopic analysis and structural characterization indicated cj-ycc to be a simple dehydrogenation product of cj-ncc-1 (by formal removal of a hydro ... | 2008 | 19037512 |
| deep supercooling xylem parenchyma cells of katsura tree (cercidiphyllum japonicum) contain flavonol glycosides exhibiting high anti-ice nucleation activity. | xylem parenchyma cells (xpcs) of boreal hardwood species adapt to sub-freezing temperatures by deep supercooling to maintain a liquid state of intracellular water near -40 degrees c. our previous study found that crude xylem extracts from such tree species exhibited anti-ice nucleation activity to promote supercooling of water. in the present study, thus, we attempted to identify the causative substances of supercooling. crude xylem extracts from katsura tree (cercidiphyllum japonicum), of which ... | 2008 | 18518920 |
| effect of gene flow on spatial genetic structure in the riparian canopy tree cercidiphyllum japonicum revealed by microsatellite analysis. | few studies have analyzed pollen and seed movements at local scale, and genetic differentiation among populations covering the geographic distribution range of a species. we carried out such a study on cercidiphyllum japonicum; a dioecious broad-leaved tree of cool-temperate riparian forest in japan. we made direct measurement of pollen and seed movements in a site, genetic structure at the local scale, and genetic differentiation between populations covering the japanese archipelago. parentage ... | 2006 | 16304606 |
| chlorophyll breakdown in spinach: on the structure of five nonfluorescent chlorophyll catabolites. | in extracts of senescent leaves of spinach (spinacia oleracea), five colourless compounds with uv/vis-characteristics of nonfluorescent chlorophyll catabolites (nccs) were detected and tentatively named so-nccs. the most abundant polar ncc in the leaves of this vegetable, so-ncc-2, had been isolated earlier and its constitution was determined by spectroscopic means. the catabolite so-ncc-2 was found to be an epimer of a polar ncc from barley (hordeum vulgare), the first non-green chlorophyll cat ... | 2002 | 16228549 |
| [population structure and distribution pattern of rare plant communities in houhe nature reserve]. | an investigation on the size structure and spatial pattern of 26 major tree species with a diameter at breast height (dbh) > or = 5 cm was made on a 1 hm2 fixed plot in the mixed evergreen and deciduous broad-leaved forest in houhe national nature reserve of central china. the results showed that 7 populations of the 26 species, i.e., dipteronia sinensi, aesculus wilsonii, pterostyrax psilophyllus, davidia involucrate, euptelea pleiosperma, tetracentron sinense and cercidiphyllum japonicum, were ... | 2004 | 15825427 |
| breakdown of chlorophyll: a nonenzymatic reaction accounts for the formation of the colorless "nonfluorescent" chlorophyll catabolites. | senescent higher plants degrade their chlorophylls (chls) to polar colorless tetrapyrrolic chl catabolites, which accumulate in the vacuoles. in extracts from degreened leaves of the tree cercidiphyllum japonicum an unpolar catabolite of this type was discovered. this tetrapyrrole was named cj-ncc-2 and was found to be identical with the product of a stereoselective nonenzymatic isomerization of a "fluorescent" chl catabolite. this (bio-mimetic) formation of the "nonfluorescent" catabolite cj-nc ... | 2003 | 12777622 |
| [comparison of leaf decomposing rate in a headwater stream in xiangxi river catchment]. | with the litterbag method, the decomposition of leaf of 4 tree species growing in riparian forest in a headwater stream was investigated in 90 d consecutively in xangxi river catchment. the results showed that the loss rate of dry weight of leaf differed among 4 species. the loss rate of dry weight of pterocarya insignis and cercidiphyllum japonicum was 77% and 71%, and shat of fagus engleriana and cyclobalanopsis multinervis was 43% and 42%. using exponential equation, the loss process of dry w ... | 2002 | 11962314 |
| [grey correlation and cluster analysis on relationship between cercidiphyllum japonicum community and its environment]. | the relationship between 10 years old c. japonicum plantation forest community and its environmental conditions was studied by grey correlation method and cluster analysis. the results showed that there existed closer relations among soil organic matter, available ca, fe, mg and n. except for n and mn, all soil available elements tested had no direct impact on the absorption and accumulation of corresponding elements by the community. the tree species in different habitats was found to absorb so ... | 2001 | 11757353 |
| revised structure of cercidinin a, a novel ellagitannin having (r)-hexahydroxydiphenoyl esters at the 3,4-positions of glucopyranose. | the structure of cercidinin a, an ellagitannin isolated from the bark of cercidiphyllum japonicum, was revised to 1,2,6-tri-o-galloyl-3,4-(r)-hexahydroxydiphenoyl-beta-d-glucose by two-dimensional nmr spectral analysis. cercidinin a represents the first ellagitannin possessing a hexahydroxydiphenoyl group at the 3,4-positions of a modified 4c1-glucopyranose core. | 2001 | 11310681 |
| [maltol and sugars of the leaves of cercidiphyllum japonicum (author's transl)]. | | 1973 | 4798546 |