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You searched for: Journal Phytochemistry Remove constraint Journal: Phytochemistry Publication Year 2008 Remove constraint Publication Year: 2008 Source 2008 v.69 no.17 Remove constraint Source: 2008 v.69 no.17
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1. Abscisic acid-induced modulation of metabolic and redox control pathways in Arabidopsis thaliana

Author:
Ghassemian, Majid; Lutes, Jason; Chang, Hur-Song; Lange, Iris; Chen, Wenqiong; Zhu, Tong; Wang, Xun; Lange, B. Markus
Source:
Phytochemistry 2008 v.69 no.17 pp. 2899-2911
ISSN:
0031-9422
Subject:
Arabidopsis thaliana; seedlings; redox reactions; biochemical pathways; gene expression regulation; transcription (genetics); metabolome; transcriptome; ascorbic acid; antioxidant activity; abscisic acid
Abstract:
... Abscisic acid (ABA) has been implicated as a mediator in plant responses to various environmental stresses. To evaluate the transcriptional and metabolic events downstream of ABA perception, Arabidopsis thaliana seedlings were analyzed by transcript and metabolite profiling, and results were integrated, using the recently developed BioPathAt tool, in the context of the biochemical pathways affecte ...
DOI:
10.1016/j.phytochem.2008.09.020
PubMed:
19007950

2. Activity of elaeochytrin A from Ferula elaeochytris on leukemia cell lines

Author:
Alkhatib, Racha; Hennebelle, Thierry; Joha, Sami; Idziorek, Thierry; Preudhomme, Claude; Quesnel, Bruno; Sahpaz, Sevser; Bailleul, François
Source:
Phytochemistry 2008 v.69 no.17 pp. 2979-2983
ISSN:
0031-9422
Subject:
Ferula; sesquiterpenoids; esters; phytochemicals; chemical structure; spectral analysis; stereochemistry; cytotoxicity; anticarcinogenic activity; leukemia; cultured cells; humans; mice; Turkey (country)
Abstract:
... Phytochemical investigation of the roots of Ferula elaeochytris made it possible to isolate two sesquiterpene esters, 6-anthraniloyljaeschkeanadiol (elaeochytrin A) and 4β-hydroxy-6α-(p-hydroxybenzoyloxy)dauc-9-ene (elaeochytrin B), as well as eight known compounds: 6-angeloyljaeschkeanadiol, teferidin, ferutinin, 6-(p-hydroxybenzoyl)epoxyjaeschkeanadiol, 6-(p-hydroxybenzoyl)lancerotriol, 5-caffeo ...
DOI:
10.1016/j.phytochem.2008.09.019

3. Biosynthesis of scopoletin and scopolin in cassava roots during post-harvest physiological deterioration: The E-Z-isomerisation stage

Author:
Bayoumi, Soad A.L.; Rowan, Michael G.; Blagbrough, Ian S.; Beeching, John R.
Source:
Phytochemistry 2008 v.69 no.17 pp. 2928-2936
ISSN:
0031-9422
Subject:
Manihot esculenta; cassava; roots; scopoletin; coumarins; isomerization; postharvest physiology; cinnamic acid; phenylpropanoids; biochemical pathways; phenylalanine; phenylalanine ammonia-lyase; plant biochemistry
Abstract:
... Two to three days after harvesting, cassava (Manihot esculenta Crantz) roots suffer from post-harvest physiological deterioration (PPD) when secondary metabolites are accumulated. Amongst these are hydroxycoumarins (e.g. scopoletin and its glucoside scopolin) which play roles in plant defence and have pharmacological activities. Some steps in the biosynthesis of these molecules are still unknown i ...
DOI:
10.1016/j.phytochem.2008.09.023
PubMed:
19004461

4. C35-apocarotenoids in the yellow mutant Neurospora crassa YLO

Author:
Sandmann, Gerhard; Takaichi, Shinishi; Fraser, Paul D.
Source:
Phytochemistry 2008 v.69 no.17 pp. 2886-2890
ISSN:
0031-9422
Subject:
Neurospora crassa; carotenoids; myristic acid; aldehyde dehydrogenase
Abstract:
... The Neurospora crassa mutant YLO exhibits a yellow phenotype instead of the red-orange pigmentation of the wild type. Recently, it was shown that the mutant YLO is defective in a specific aldehyde dehydrogenase which catalyses the last step of carotenogenesis to the formation of neurosporaxanthin [Estrada, A.F., Youssar, L., Scherzinger, D., Al-Babili, S., Avalos, J., 2008. The ylo-1 gene encodes ...
DOI:
10.1016/j.phytochem.2008.09.016
PubMed:
19007949

5. Carbohydrate-binding activity of the type-2 ribosome-inactivating protein SNA-I from elderberry (Sambucus nigra) is a determining factor for its insecticidal activity

Author:
Shahidi-Noghabi, Shahnaz; Damme, Els J.M. Van; Smagghe, Guy
Source:
Phytochemistry 2008 v.69 no.17 pp. 2972-2978
ISSN:
0031-9422
Subject:
Sambucus nigra; plant proteins; binding proteins; insecticidal properties; carbohydrates; bioassays; artificial diets; Acyrthosiphon pisum; mortality; fecundity; Myzus nicotianae; insect pests; plant pests; nymphs; adult insects; insect development; insect reproduction; protein binding; agglutinins; structure-activity relationships; transgenic plants
Abstract:
... In recent years, different classes of proteins have been reported to promote toxic effects when ingested. Type-2 ribosome-inactivating proteins (RIPs) are a group of chimeric proteins built up of an A-chain with RNA N-glycosidase activity and a B-chain with lectin activity. These proteins are thought to play a role in plant protection. Sambucus nigra agglutinin I (SNA-I) is a type-2 RIP, isolated ...
DOI:
10.1016/j.phytochem.2008.09.012
PubMed:
18951590

6. Changes in pyridine metabolism profile during growth of trigonelline-forming Lotus japonicus cell cultures

Author:
Yin, Yuling; Matsui, Ayu; Ashihara, Hiroshi
Source:
Phytochemistry 2008 v.69 no.17 pp. 2891-2898
ISSN:
0031-9422
Subject:
pyridines; trigonelline; cell culture; cell suspension culture; cell growth; nicotinamide; plant biochemistry
Abstract:
... Changes in the profile of pyridine metabolism during growth of cells were investigated using trigonelline-forming suspension-cultured cells of Lotus japonicus. Activity of the de novo and salvage pathways of NAD biosynthesis was estimated from the in situ metabolism of [3H] quinolinic acid and [14C] nicotinamide. Maximum activity of the de novo pathway for NAD synthesis was found in the exponentia ...
DOI:
10.1016/j.phytochem.2008.10.002
PubMed:
19007947

7. Chemical characterisation of the terpenoid constituents of the Algerian plant Launaea arborescens

Author:
Bitam, Fatma; Ciavatta, M. Letizia; Manzo, Emiliano; Dibi, Ammar; Gavagnin, Margherita
Source:
Phytochemistry 2008 v.69 no.17 pp. 2984-2992
ISSN:
0031-9422
Subject:
Launaea; chemical constituents of plants; phytochemicals; triterpenoids; sesquiterpenoids; esters; chemical structure; spectral analysis; stereochemistry; antifungal properties; antibacterial properties; human health; Algeria
Abstract:
... Chemical investigation of endemic Algerian plant Launaea arborescens resulted in the isolation of a series of triterpenes and sesquiterpenes from both the aerial parts and roots. Five terpenoids have been chemically characterised by means of spectral methods mainly NMR techniques. In addition, the absolute stereochemistry at the chiral carbon in the side chain of 8-deoxy-15-(3'-hydroxy-2'-methyl-p ...
DOI:
10.1016/j.phytochem.2008.09.025
PubMed:
19007948

8. Differential effects of fenpropimorph and fenhexamid, two sterol biosynthesis inhibitor fungicides, on arbuscular mycorrhizal development and sterol metabolism in carrot roots

Author:
Campagnac, Estelle; Fontaine, Joël; Sahraoui, Anissa Lounès-Hadj; Laruelle, Frédéric; Durand, Roger; Grandmougin-Ferjani, Anne
Source:
Phytochemistry 2008 v.69 no.17 pp. 2912-2919
ISSN:
0031-9422
Subject:
Glomus intraradices; mycorrhizal fungi; microbial colonization; vesicular arbuscular mycorrhizae; fenpropimorph; fungicides; phytosterols; biosynthesis; Daucus carota; carrots; roots; root growth
Abstract:
... Sterols composition of transformed carrot roots incubated in presence of increasing concentrations of fenpropimorph (0.02; 0.2; 2 mg l-1) and fenhexamid (0.02; 0.2; 2; 20 mg l-1), colonized or not by Glomus intraradices was determined. In mycorrhizal roots treated with fenpropimorph, normal Δ5-sterols were replaced by unusual compounds such as 9β,19-cyclopropylsterols (24-methylpollinastanol), Δ8, ...
DOI:
10.1016/j.phytochem.2008.09.009
PubMed:
19007946

9. Effectiveness of the fatty acid and sterol composition of seeds for the chemotaxonomy of Coffea subgenus Coffea

Author:
Dussert, Stephane; Laffargue, Andreina; Kochko, Alexandre de; Joet, Thierry
Source:
Phytochemistry 2008 v.69 no.17 pp. 2950-2960
ISSN:
0031-9422
Subject:
Coffea; seeds; chemical constituents of plants; quantitative analysis; lipid composition; fatty acid composition; fatty acids; phytosterols; chemotaxonomy; plant taxonomy; provenance; phylogeny; principal component analysis
Abstract:
... The chemotaxonomic relationships between Coffea (subgenus Coffea) species have been poorly studied to date and the compounds tested so far - chlorogenic acids, diterpenoids and purine alkaloids - did not enable the establishment of phylogenetic relationships analogous to those revealed by chloroplast and nuclear DNA studies. In the present study, the relationships between African Coffea species we ...
DOI:
10.1016/j.phytochem.2008.09.021
PubMed:
18995872

10. Making artemisinin

Author:
Covello, Patrick S.
Source:
Phytochemistry 2008 v.69 no.17 pp. 2881-2885
ISSN:
0031-9422
Subject:
artemisinin; antimalarials; phytochemicals; Artemisia annua; transgenic plants; biosynthesis; genetic engineering
Abstract:
... The possibilities for the production of the antimalarial artemisinin by biological and chemical means are explored. These include native biosynthesis, genetic modification of Artemisia annua and other plants, engineering of microbes, total and partial chemical synthesis and combinations of the above. ...
DOI:
10.1016/j.phytochem.2008.10.001
PubMed:
18977499

11. Sesquiterpene lactones from the endemic Cape Verdean Artemisia gorgonum

Author:
Orlet, Risoleta; Prado, Soizic; Mouray, Elisabeth; Thomas, Olivier P.
Source:
Phytochemistry 2008 v.69 no.17 pp. 2961-2965
ISSN:
0031-9422
Subject:
Artemisia; medicinal plants; traditional medicine; indigenous species; chemical constituents of plants; sesquiterpenoid lactones; guaianolides; phytochemicals; chemical structure; spectral analysis; Plasmodium falciparum; cytotoxicity; cultured cells; Cape Verde
Abstract:
... Leaves and flowers of Artemisia gorgonum (Asteraceae) collected in Fogo, Cape Verde islands, were phytochemically investigated and resulted in isolation and characterization of three guaianolides 1, 2, 5, and a secoguainolide 4, in addition to eight known guaianolides 6-11 and two known germacranolides 12, 13. Structures were elucidated by 1D and 2D NMR experiments. Careful examination of the 13C ...
DOI:
10.1016/j.phytochem.2008.09.022
PubMed:
19007951

12. Sinapis phylogeny and evolution of glucosinolates and specific nitrile degrading enzymes

Author:
Agerbirk, Niels; Warwick, Suzanne I.; Hansen, Paul R.; Olsen, Carl E.
Source:
Phytochemistry 2008 v.69 no.17 pp. 2937-2949
ISSN:
0031-9422
Subject:
Brassicaceae; Sinapis; Sinapis alba; Sinapis arvensis; glucosinolates; nitriles; hydrolases; hydro-lyases; enzyme activity; aromatic hydrocarbons; chemotaxonomy
Abstract:
... Levels of sinalbin (4-hydroxybenzylglucosinolate) and 28 other glucosinolates were determined in leaves and roots of 20 species that were either phylogenetically close to Sinapis alba, Sinapis arvensis, or Sinapis pubescens (tribe Brassiceae, Brassicaceae), or were expected to contain arylalkyl nitrilase activity. Comparison with a molecular phylogenetic tree based on ITS DNA sequences identified ...
DOI:
10.1016/j.phytochem.2008.08.014
PubMed:
18995873

13. Structure and biological activity of maculansin A, a phytotoxin from the phytopathogenic fungus Leptosphaeria maculans

Author:
Pedras, M. Soledade C.; Yu, Yang
Source:
Phytochemistry 2008 v.69 no.17 pp. 2966-2971
ISSN:
0031-9422
Subject:
Leptosphaeria maculans; plant pathogenic fungi; phytotoxicity; Brassica napus var. napus; canola; host plants; Brassica juncea; Brassicaceae
Abstract:
... During a search for elicitors and phytotoxins produced by virulent isolates of the phytopathogenic fungus Leptosphaeria maculans (Desm.) Ces. et de Not. [asexual stage Phoma lingam (Tode ex Fr.) Desm.], the selective phytotoxin maculansin A was isolated and its structure determined by analysis of spectroscopic data and chemical degradation. Maculansin A, a unique derivative of mannitol containing ...
DOI:
10.1016/j.phytochem.2008.09.015
PubMed:
18977007

14. Terpenoids from Dysoxylum densiflorum

Author:
Xie, Bo-Jun; Yang, Sheng-Ping; Yue, Jian-Min
Source:
Phytochemistry 2008 v.69 no.17 pp. 2993-2997
ISSN:
0031-9422
Subject:
Dysoxylum; limonoids; sesquiterpenoids; chemical structure; spectral analysis; stereochemistry
Abstract:
... Three degraded limonoids, dysodensiols A-C (1-3), and three sesquiterpenoids, dysodensiols D-F (4-6), along with 17 known compounds, were isolated from the twigs and leaves of Dysoxylum densiflorum. The structures of compounds 1-6 were established on the basis of extensive spectroscopic analysis. ...
DOI:
10.1016/j.phytochem.2008.09.017

15. Validation of the design of feeding experiments involving [14C]substrates used to monitor metabolic flux in higher plants

Author:
Harrison, Peter W.; Kruger, Nicholas J.
Source:
Phytochemistry 2008 v.69 no.17 pp. 2920-2927
ISSN:
0031-9422
Subject:
carbohydrate metabolism; oxidation; stable isotopes; Arabidopsis thaliana; cell suspension culture; cultured cells; glucose; gluconic acid; carbon dioxide
Abstract:
... The aim of this study was to examine whether flux through the pathways of carbohydrate oxidation is accurately reflected in the pattern of 14CO2 release from positionally labelled [14C]substrates in conventional radiolabel feeding studies. Heterotrophic cell suspension cultures of Arabidopsis thaliana were used for this work. The presence of an alkaline trap to capture metabolically generated 14CO ...
DOI:
10.1016/j.phytochem.2008.09.024
PubMed:
18992903