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金缕梅的组织培养 总被引:3,自引:1,他引:2
1植物名称金缕梅(Hamamelis mollis O1iv.). 2材料类别浙江龙王山自然保护区采收的当年健康成熟的种子. 3培养条件种子萌发培养基:(1)MS0;诱导培养基:(2)MS 6-BA 1.0 mg·L-1 (单位下同) NAA 0.1 2,4-D 0.1;增殖培养基:(3)MS 6-BA 0.2 NAA0.1,(4)MS 6-BA 1.0 NAA 0.1;壮苗培养基:(1)MS0;生根培养:(5)1/2MS KT 0.1 NAA 0.6,(6)1/2MS 6-BA 0.1 NAA 1.0.培养基(1)~(4)附加蔗糖30 g·L-1,(5)和(6)附加蔗糖20 g·L-1 ,琼脂为6.5 g·L-1 ,pH 5.8.培养温度(25±1)℃,种子萌发培养和生根培养的前期进行暗培养,其余阶段均照光,光照时间12 h·d-1 ,光照度为2 500~3 000 1x. 相似文献
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Oleanane-type triterpenoidal saponins, hydrocosisaponins A-F (1-6), along with a known saponin, hydrocotyloside VII (7), were isolated from Hydrocotyle sibthorpioides. Their structures were established on the basis of spectroscopic analyses including NMR spectroscopic techniques ((13)C, (1)H, COSY, HMQC, HMBC, TOCSY and NOESY). Biological evaluation established that saponins possessing four sugar units (three d-glucoses and one l-arabinose) (4-7) exhibited moderate cytotoxicity against KB, Daoy and WiDr human tumor cell lines. 相似文献
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Tabopda TK Mitaine-Offer AC Miyamoto T Tanaka C Mirjolet JF Duchamp O Ngadjui BT Lacaille-Dubois MA 《Phytochemistry》2012,73(1):142-147
Phytochemical investigation of the under-ground parts of Hydrocotyle bonariensis led to the isolation of five oleanane-type triterpenoid saponins, 3-O-{β-D-glucopyranosyl-(1 → 2)-[α-L-arabinopyranosyl-(1 → 3)]-β-D-glucuronopyranosyl}-21-O-(2-methylbutyroyl)-22-O-acetyl-R(1)-barrigenol, 3-O-{β-D-glucopyranosyl-(1 → 2)-[α-L-arabinopyranosyl-(1 → 3)]-β-D-glucuronopyranosyl}-21-O-(2-methylbutyroyl)-28-O-acetyl-R(1)-barrigenol, 3-O-{β-D-glucopyranosyl-(1 → 2)-[α-L-arabinopyranosyl-(1 → 3)]-β-D-glucuronopyranosyl}-21-O-acetyl-R(1)-barrigenol, 3-O-{β-D-glucopyranosyl-(1 → 2)-[α-L-arabinopyranosyl-(1 → 3)]-β-D-glucuronopyranosyl}-R(1)-barrigenol, and 3-O-{β-D-glucopyranosyl-(1 → 2)-[α-L-arabinopyranosyl-(1 → 3)]-β-D-glucuronopyranosyl}-22-O-(2-methylbutyroyl)-A(1)-barrigenol, together with the known saniculoside-R1. Their structures were established by 2D NMR techniques and mass spectrometry. Six compounds were evaluated against two human colon cancer cell lines, HCT 116 and HT-29. Two compounds showed weak cytotoxicity with IC(50) 24.1 and 24.0, 83.0 and 83.6 μM against HT-29 and HCT 116, respectively. 相似文献
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In addition to quercetin, quercetin 3-galactoside and isorhamnetin, a new caffeoylgalactoside has been isolated from Hydrocotyle sibthorpioides and identified by chemical and spectral data as quercetin 3-O-β-d-(6″-caffeoylgalactoside). 相似文献
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Rates of net CO2 uptake were examined in developing leaves of Hydrocotyle bonariensis. Leaves that developed under high photosynthetically active radiation (48 mol m-2 day-1 PAR) were smaller, thicker, and reached maximum size sooner than did leaves that developed under low PAR (4.8 mol m-2 day-1). Maximum net CO2 uptake rates were reached after 5 to 6 days expansion for both the low and the high PAR leaves. Leaves grown at high PAR had higher maximum photosynthetic rates and a higher PAR required for light saturation but showed a more rapid decline in rate with age than did low PAR leaves. To assess the basis for the difference observed in photosynthetic rates, CO2 diffusion conductances and the mesophyll surface available for CO2 absorption were examined for mature leaves. Stomatal conductance was the largest conductance in all treatments and did not vary appreciably with growth PAR. Mesophyll conductance progressively increased with growth PAR (up to 48 mol m-2 day-1) as did the mesophyll surface area per unit leaf area, but the cellular conductance exhibited most of its increase at low PAR (up to 4.8 mol m-2 day-1). 相似文献
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