Abstract：
:Lignin, a complex phenylpropanoid compound, is polymerized from the monolignols p-coumaryl alcohol, coniferyl alcohol and sinapyl alcohol. These three monolignols differ only by the 3- and 5-methoxyl groups. Therefore, enzymatic reactions controlling the methylations of the 3- and 5-hydroxyls of monolignol precursors are critical to determine the lignin composition. Recent biochemical and transgenic studies have indicated that the methylation pathways in monolignol biosynthesis are much more complicated than we have previously envisioned. It has been demonstrated that caffeoyl CoA O-methyltransferase plays an essential role in the synthesis of guaiacyl lignin units as well as in the supply of substrates for the synthesis of syringyl lignin units. Caffeic acid O-methyltransferase has been found to essentially control the biosynthesis of syringyl lignin units. These new findings have greatly enriched our knowledge on the methylation pathways in monolignol biosynthesis.
journal_name
Phytochemistryjournal_title
Phytochemistryauthors
Ye ZH,Zhong R,Morrison WH 3rd,Himmelsbach DSdoi
10.1016/s0031-9422(01)00051-6subject
Has Abstractpub_date
2001-08-01 00:00:00pages
1177-85issue
7eissn
0031-9422issn
1873-3700pii
S0031942201000516journal_volume
57pub_type
杂志文章相关文献
PHYTOCHEMISTRY文献大全abstract：:Phospholipase D (PLD; E.C. 3.1.4.4) is widespread in plants where it fulfills diverse functions in growth and in the response to stresses. The enzyme occurs in multiple forms that differ in their biochemical properties. In the present paper PLD from medicinally relevant Indian mustard seeds was purified by Ca(2+)-medi...
journal_title：Phytochemistry
pub_type： 杂志文章
doi：10.1016/j.phytochem.2015.05.022
更新日期：2015-09-01 00:00:00
abstract：:Colonization of the roots of various tobacco species and cultivars (Nicotiana glauca Grah., N. longiflora Cav., N. rustica L., N. tabacum L., N. tabacum L. cv. Samsun NN, N. sanderae hort. Sander ex Wats.) as well as tomato plants (Lycopersicon esculentum L. cv. Moneymaker) by the arbuscular mycorrhizal fungus Glomus ...
journal_title：Phytochemistry
pub_type： 杂志文章
doi：10.1016/s0031-9422(00)00047-9
更新日期：2000-06-01 00:00:00
abstract：:A new bidesmosidic triterpenoidal saponin of hederagenin was isolated from the ethanolic extract of the roots of Symphytum officinale L. Its structure was elucidated by using 1H NMR, 1H-1H COSY NMR, heteronuclear 1H-13C correlated spectroscopy (heteroCOSY), 13C NMR, DEPT, FAB mass spectrometry and chemical evidence as...
journal_title：Phytochemistry
pub_type： 杂志文章
doi：10.1016/s0031-9422(00)97091-2
更新日期：1994-05-01 00:00:00
abstract：:A cyanogenic glycoside - 6'-O-galloylsambunigrin - has been isolated from the foliage of the Australian tropical rainforest tree species Elaeocarpus sericopetalus F. Muell. (Elaeocarpaceae). This is the first formal characterisation of a cyanogenic constituent in the Elaeocarpaceae family, and only the second in the o...
journal_title：Phytochemistry
pub_type： 杂志文章
doi：10.1016/j.phytochem.2006.03.022
更新日期：2006-07-01 00:00:00
abstract：:Three new glycosides of the oleanene-type triterpenes, rivalosides C-E (1-3), along with three known triterpene saponins, momordin IIb (4) and rivalosides A-B (5-6), and five known iridoid glucosides: monotropein, scandoside, deacetylasperulosidic acid, geniposidic acid and asperulosidic acid, were isolated from aeria...
journal_title：Phytochemistry
pub_type： 杂志文章
doi：10.1016/s0031-9422(00)00149-7
更新日期：2000-08-01 00:00:00
abstract：:The ether extract of the Chilean liverwort Lepicolea ochroleuca yielded three sesquiterpenoids, ent-4 beta-Hydroxy-10 alpha-methoxyaromadendrane, ent-3 beta-Hydroxyspathulenol, and 1,10-Dioxotayloriane, as minor components. The major components were ledol and 13-epi-neoverrucosan-5 beta-ol, four other minor fusicoccan...
journal_title：Phytochemistry
pub_type： 杂志文章
doi：10.1016/s0031-9422(99)00609-3
更新日期：2000-04-01 00:00:00
abstract：:Two new long chain alkyl p-coumaric acid esters (2-3) along with eicosanyl trans-p-coumarate (1) were isolated from chloroform extract of the roots of Tanacetum longifolium. The structures of new compounds were assigned as 21'-hydroxyheneicosanyl-4-hydroxy-(cis and trans) p-coumarate (2a, 2b) and 27'-hydroxy heptacosa...
journal_title：Phytochemistry
pub_type： 杂志文章
doi：10.1016/j.phytochem.2003.08.023
更新日期：2003-10-01 00:00:00
abstract：:Diterpene esters of the phorbol and ingenol types are known to be highly active tumor promoting agents that typically occur in members of the Euphorbiaceae. In the present work, Euphorbia leuconeura, a rare indoor plant, is analyzed for its tumor promoting potential. Latex as well as total leaf extracts exhibited Epst...
journal_title：Phytochemistry
pub_type： 杂志文章
doi：10.1016/s0031-9422(99)00016-3
更新日期：1999-05-01 00:00:00
abstract：:Six chromene stilbenoids and one chromane stilbenoid were isolated from the African tree Hymenocardia acida. Several were moderately active against methicillin-resistant Staphylococcus aureus clinical isolate MRSA-108, including hymenocardichromanic acid, which was active at 8 μg/ml. None had IC50 values <20 μM in ant...
journal_title：Phytochemistry
pub_type： 杂志文章
doi：10.1016/j.phytochem.2013.11.012
更新日期：2014-02-01 00:00:00
abstract：:Bioassay-guided fractionation against alpha-glucosidase resulted in isolation and characterization of eight active compounds from the EtOH extract of the seeds of Syagrus romanzoffiana. Of these, seven are stilbenoids, and two of them, 13-hydroxykompasinol A (1) and scirpusin C (4), possess potent inhibitory activity ...
journal_title：Phytochemistry
pub_type： 杂志文章
doi：10.1016/j.phytochem.2007.12.004
更新日期：2008-03-01 00:00:00
abstract：:Seven hexahydrobenzophenanthridine-type alkaloids, Ambiguanine A-G, along with eight known alkaloids, were isolated from tubers of Corydalis ambigua var. amurensis. Their structures were elucidated based on extensive spectroscopic analyses, with absolute configurations determined by CD experiments. ...
journal_title：Phytochemistry
pub_type： 杂志文章
doi：10.1016/j.phytochem.2014.05.013
更新日期：2014-09-01 00:00:00
abstract：:Three new phenylethanoid glycoside, named scrosides A-C and a new iridoid glycosides, named picroside IV, have been isolated from the underground parts of Picrorhiza scrophulariiflora, together with 11 known compounds. Their structures were elucidated by the means of 2D NMR spectroscopy and chemical methods. ...
journal_title：Phytochemistry
pub_type： 杂志文章
doi：10.1016/s0031-9422(98)00030-2
更新日期：1998-06-01 00:00:00
abstract：:A series of prenylated flavonoids was obtained from antigenotoxic extracts and fractions of stem bark of Erythrina latissima E. Mey (Leguminosae). In addition to five constituents never reported before, i.e. (2S)-5,7-dihydroxy-2-(4-hydroxy-2-(prop-1-en-2-yl)-2,3-dihydrobenzofuran-6-yl)chroman-4-one (erylatissin D), (2...
journal_title：Phytochemistry
pub_type： 杂志文章
doi：10.1016/j.phytochem.2017.06.003
更新日期：2017-09-01 00:00:00
abstract：:Cell adhesion occurs primarily at the level of middle lamella which is mainly composed by pectin polysaccharides. These can be degraded by cell wall degrading enzymes (CWDEs) during developmental processes to allow a controlled separation of plant cells. Extensive cell wall degradation by CWDEs with consequent cell se...
journal_title：Phytochemistry
pub_type： 杂志文章
doi：10.1016/j.phytochem.2014.07.025
更新日期：2015-04-01 00:00:00
abstract：:Extracts from the lignifying xylem of Sitka spruce that were enriched in cell-wall-associated glycoproteins contained peroxidase and oxidase activity and readily formed lignin-like water-insoluble dehydrogenation polymers (DHPs) from coniferyl alcohol (CA) when supplied with H2O2. During the formation of DHPs, the abu...
journal_title：Phytochemistry
pub_type： 杂志文章
doi：10.1016/s0031-9422(01)00027-9
更新日期：2001-05-01 00:00:00
abstract：:During the search for new protein tyrosine phosphatase (PTP) 1B inhibitors, EtOH extracts from the aerial parts of Lantana camara L. (lantana) collected at Manado (Indonesia) and two subtropical islands in Japan (Ishigaki and Iriomote Islands, Okinawa) exhibited potent inhibitory activities against PTP1B in an enzyme ...
journal_title：Phytochemistry
pub_type： 杂志文章
doi：10.1016/j.phytochem.2017.08.020
更新日期：2017-12-01 00:00:00
abstract：:Four new xanthones have been isolated from the roots of Hypericum roeperanum. Their structures have been established by a combination of spectroscopic and chemical methods as 1,6-dihydroxy-5-methoxy-4',5'-dihydro-4',4',5'-trimethylfurano- (2',3':3,4)-xanthone (5-O-methyl-2-deprenylrheediaxanthone B), 1,6-dihydroxy-5-m...
journal_title：Phytochemistry
pub_type： 杂志文章
doi：10.1016/0031-9422(96)00284-1
更新日期：1996-09-01 00:00:00
abstract：:The essential oil of aerial parts of Capillipedium parviflorum (family Poaceae) was obtained by hydrodistillation in 0.4% yield on dry weight basis. The oil was analysed by capillary GC and GC-MS techniques. Two new compounds from plant source 4-nonanol 51.7% and 4-undecanone 23.5% predominated in the essential oil an...
journal_title：Phytochemistry
pub_type： 杂志文章
doi：10.1016/j.phytochem.2004.04.003
更新日期：2004-07-01 00:00:00
abstract：:Scrokoelziside A, isolated from the aerial parts of Scrophularia koelzii was shown to be 3-O-([alpha-L-rhamnopyranosyl-(1-->3), beta-D-glucopyranosyl-(1-->2)]-beta-D-fucopyranosyl-(1-->4)-beta-D- glucopyranosyl]-13 beta,28-epoxyolean-11-en-23-ol, on the basis one- and two-dimensional NMR homo- and hetero-nuclear spect...
journal_title：Phytochemistry
pub_type： 杂志文章
doi：10.1016/0031-9422(95)00697-4
更新日期：1996-02-01 00:00:00
abstract：:Two polyphenol oxidase isoforms with distinct expression patterns were identified in hybrid poplar (Populus trichocarpaxP. deltoides). PPO-1, corresponding to the previously cloned PtdPPO (Constabel et al., Plant Physiol. 124: 285-295) was primarily leaf tissue-specific and detected only after wounding. PPO-2 was expr...
journal_title：Phytochemistry
pub_type： 杂志文章
doi：10.1016/s0031-9422(03)00159-6
更新日期：2003-09-01 00:00:00
abstract：:Two novel triterpenoid saponins, dianchinenoside C [23-O-beta-D-glucopyranosyl 3 beta, 16 alpha-dihydroxyolean-12-ene 23 alpha, 28 beta-dioic acid 28-O-beta-D-glucopyranoside] and dianchinenoside D [3 beta, 16 alpha-dihydroxyolean-12-ene 23 alpha, 28 beta-dioic acid 28-O-beta-D-glucopyranosyl [1-->6)-beta-D-glucopyran...
journal_title：Phytochemistry
pub_type： 杂志文章
doi：10.1016/s0031-9422(00)90599-5
更新日期：1994-02-01 00:00:00
abstract：:Lychnophora ericoides is a Brazilian medicinal plant used in folk medicine as an anti-inflammatory and analgesic agent. The essential oils from leaves of two populations with and without scent, collected at 2-month intervals during an 1-year period, were analysed by GC-MS. The results were submitted to principal compo...
journal_title：Phytochemistry
pub_type： 杂志文章
doi：10.1016/j.phytochem.2006.08.002
更新日期：2006-11-01 00:00:00
abstract：:Prophylactic efficacies of Iodus 40 and salicylic acid (SA) against wheat powdery mildew caused by Blumeria graminis f. sp. tritici have been shown and compared with those of heptanoyl salicylic acid (HSA) and trehalose. Plantlets treated once exhibited 55%, 50%, 95%, and 38% protection levels, respectively. Two spray...
journal_title：Phytochemistry
pub_type： 杂志文章
doi：10.1016/j.phytochem.2007.02.011
更新日期：2007-04-01 00:00:00
abstract：:Three phenolic glycosides were isolated together with two known flavonol glycosides from the H2O-soluble fraction of rhizomes of Kaempferia parviflora. Their structures were determined to be rel-(5aS,10bS)-5a,10b-dihydro-1,3,5a,9-tetrahydroxy-8-methoxy-6H-benz[b]indeno[1,2-d]furan-6-one 5a-O-[alpha-L-rhamnopyranosyl-(...
journal_title：Phytochemistry
pub_type： 杂志文章
doi：10.1016/j.phytochem.2008.09.001
更新日期：2008-11-01 00:00:00
abstract：:The heterologous expression of cDNAs encoding the alkaloid biosynthetic enzymes, strictosidine synthase [EC 4.3.3.2] from Rauvolfia serpentina and the berberine bridge enzyme [(S)-reticuline: oxygen oxidoreductase (methylene-bridge-forming), EC 1.5.3.9] from Eschscholtzia californica, has been achieved in a cell cultu...
journal_title：Phytochemistry
pub_type： 杂志文章
doi：10.1016/s0031-9422(00)94763-0
更新日期：1994-01-01 00:00:00
abstract：:Phenylacetic acid derivatives, methyl 2-acetyl-3,5-dihydroxyphenylacetate (1) and methyl 2-acetyl-5-hydroxy-3-methoxyphenylacetate (3); curvulin or ethyl 2-acetyl-3,5-dihydroxyphenylacetate (4), a known metabolite of Curvularia siddiqui, and 4-epiradicinol (5) have been isolated from the culture mycelia of Curvularia ...
journal_title：Phytochemistry
pub_type： 杂志文章
doi：10.1016/j.phytochem.2006.05.032
更新日期：2006-09-01 00:00:00
abstract：:Twenty withanolides, including previously unknown nicanlodes A-M, were isolated from aerial parts of Nicandra physalodes. Their structural elucidations were unambiguously achieved through interpretation of extensive spectroscopic data (NMR and HRMS) and by comparison with literature data. Nicanlodes A and B have an un...
journal_title：Phytochemistry
pub_type： 杂志文章
doi：10.1016/j.phytochem.2017.02.009
更新日期：2017-05-01 00:00:00
abstract：:Five p-terphenyl derivatives named thelephantins D-H (1-5) together with nine known compounds, thelephantins A-C (6-8), ganbajunin E (9), p-hydroxylbenzoic acid (10), ganbajunin C (11), thelephorin A (12), 2-O-methylatromentin (13) and atromentin (14), were isolated from the methanolic extract of fruit bodies of the T...
journal_title：Phytochemistry
pub_type： 杂志文章
doi：10.1016/s0031-9422(03)00220-6
更新日期：2003-08-01 00:00:00
abstract：:Callus tissue cultures induced from an axenic leaf of Eriobotrya japonica (Rosaceae) produced triterpenes in large amounts (ca. 50 mg/g dry wt). Nine triterpenes were characterized as ursolic acid, oleanolic acid, 2alpha-hydoxyursolic acid, maslinic acid, tormentic acid, 2alpha, 19alpha-dihydroxy-3-oxo-urs-12-en-28-oi...
journal_title：Phytochemistry
pub_type： 杂志文章
doi：10.1016/s0031-9422(01)00455-1
更新日期：2002-02-01 00:00:00
abstract：:Blueberry consumption is associated with health benefits contributing to a reduced risk for cardiovascular disease, diabetes and cancer. The aim of this study was to determine the anthocyanin profile of blueberry extracts and to evaluate their effects on B16-F10 metastatic melanoma murine cells. Seven blueberry cultiv...
journal_title：Phytochemistry
pub_type： 杂志文章
doi：10.1016/j.phytochem.2013.06.018
更新日期：2013-11-01 00:00:00
