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You searched for: Journal name Plant physiology Remove constraint Journal name: Plant physiology Subject term esters Remove constraint Subject term: esters Text availability Citation in PubAg Remove constraint Text availability: Citation in PubAg
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1. Purification and characterization of 1-aminocyclopropane-1-carboxylate N-malonyltransferase from etiolated mung bean hypocotyls

Author:
Guo, L.; Arteca, R.N.; Phillips, A.T.; Liu, Y.
Source:
Plant physiology 1992 v.100 no.4 pp. 2041-2045
ISSN:
0032-0889
Subject:
1-aminocyclopropane-1-carboxylic acid; hypocotyls; Vigna radiata; esters; etiolation; malonyl coenzyme A; enzyme activity; acyltransferases
Abstract:
... 1-Aminocyclopropane-1-carboxylate (ACC) N-malonyltransferase converts ACC, an immediate precursor of ethylene, to the presumably inactive product malonyl-ACC (MACC). This enzyme plays a role in ethylene production by reducing the level of free ACC in plant tissue. In this study, ACC N-malonyltransferase was purified 3660-fold from etiolated mung bean (Vigna radiata) hypocotyls, with a 6% overall r ...
DOI:
10.1104/pp.100.4.2041
PubMed:
16653237

2. Regulation of plant fatty acid biosynthesis: Analysis of acyl-coenzyme A and acyl-acyl carrier protein substrate pools in spinach and pea chloroplasts

Author:
Post-Beittenmiller, D.; Roughan, G.; Ohlrogge, J.B.
Source:
Plant physiology 1992 v.100 no.2 pp. 923-930
ISSN:
0032-0889
Subject:
fatty acids; Spinacia oleracea; acetyl coenzyme A; binding proteins; lipogenesis; esters; malonyl coenzyme A; acetyl-CoA carboxylase; Pisum sativum; enzyme activity; transferases; chloroplasts
Abstract:
... In previous work (D. Post-Beittenmiller, J.G. Jaworski, J.B. Ohlrogge [1991] J Biol Chem 266: 1858-1865), the in vivo acyl-acyl carrier protein (ACP) pools were measured in spinach (Spinacia oleracea) leaves and changes in their levels were compared to changes in the rates of fatty acid biosynthesis. To further examine the pools of substrates and cofactors for fatty acid biosynthesis and to evalua ...
DOI:
10.1104/pp.100.2.923
PubMed:
16653077

3. Cell-free synthesis of pectin. Identification and partial characterization of polygalacturonate 4-alpha-galacturonosyltransferase and its products from membrane preparations of tobacco cell-suspension cultures

Author:
Doong, R.L.; Liljebjelke, K.; Fralish, G.; Kumar, A.; Mohnen, D.
Source:
Plant physiology 1995 v.109 no.1 pp. 141-152
ISSN:
0032-0889
Subject:
hexosyltransferases; radiolabeling; polygalacturonase; cell membranes; analytical methods; synthesis; Nicotiana tabacum; esters; cell wall components; galacturonic acid; pectins; bioassays; temperature; enzyme activity; esterification; pH; kinetics; cell suspension culture
Abstract:
... Polygalacturonate 4-alpha-galacturonosyltransferase (EC 2.4.1.43) activity has been identified in microsomal membranes isolated from tobacco (Nicotiana tabacum L. cv Samsun) cell-suspension cultures. Incubation of UDP-[14C]galacturonic acid with tobacco membranes results in a time-dependent incorporation of [14C]galacturonic acid into a chloroform-methanol-precipitable and 65% ethanol-insoluble pr ...

4. Hydroxycinnamoyltransferases involved in the accumulation of caffeic acid esters in gametophytes and sporophytes of Equisetum arvense

Author:
Hohlfeld, M.; Veit, M.; Strack, D.
Source:
Plant physiology 1996 v.111 no.4 pp. 1153-1159
ISSN:
0032-0889
Subject:
biosynthesis; caffeic acid; molecular weight; developmental stages; biochemical pathways; Equisetum arvense; pH; esters; kinetics; enzyme activity; acyltransferases
Abstract:
... Four hydroxycinnamoyltransferases from Equisetum arvense L. were studied that catalyze the formation of mono-O-caffeoyl-meso-tartrate, di-O-caffeoyl-meso-tartrate, 5-O-caffeoylshikimate (dactylifrate), and 5-O-caffeoylquinate (chlorogenate). The enzymes were classified as coenzyme A (CoA)-ester-dependent acyltransferases (EC 2.3.1), i.e. hydroxycinnamoyl-CoA:meso-tartrate hydroxycinnamoyltransfera ...

5. Biosynthesis of GA73 methyl ester in Lygodium ferns

Author:
Yamauchi, T.; Oyama, N.; Yamane, H.; Murofushi, N.; Schraudolf, H.; Pour, M.; Seto, H.; Mander, L.N.
Source:
Plant physiology 1997 v.113 no.3 pp. 773-778
ISSN:
0032-0889
Subject:
Lygodium; gibberellic acid; esters; biosynthesis; metabolites; chemical structure; chemical reactions; biochemical pathways; chemical constituents of plants
Abstract:
... Biosynthesis of GA73 methyl ester (GA73-Me), the principal antheridiogen in Lygodium ferns, was investigated. From the methanol extract of prothallia of Lygodium circinnatum, GA25, GA73, GA73-Me, GA88-Me, and a few unknown GA73 derivatives were detected by CC-MS. Because the presence of GA25 suggests that GA24, a direct precursor of GA25, could also be present in L. circinnatum prothallia, we used ...

6. Characterization of thylakoid-derived lipid-protein particles bearing the large subunit of ribulose-1,5-bisphosphate carboxylase/oxygenase

Author:
Smith, M.D.; Ghosh, S.; Dumbroff, E.B.; Thompson, J.E.
Source:
Plant physiology 1997 v.115 no.3 pp. 1073-1082
ISSN:
0032-0889
Subject:
ribulose-bisphosphate carboxylase; fatty acids; thylakoids; proteinases; adenosine triphosphate; Phaseolus vulgaris; esters; light; chemical constituents of plants; protein content; enzyme activity
Abstract:
... Lipid-protein particles bearing the 55-kD ribulose-1,5-bisphosphate carboxylase/oxygenase (Rubisco) (EC 4.1.1.39) large subunit (RLSU) and no detectable corresponding Rubisco small subunit (RSSU) were isolated from the stroma of intact chloroplasts by flotation centrifugation. Stromal RLSU-bearing particles appear to originate from thylakoids because they can also be generated in vitro by illumina ...

7. Identification and characterization of linoleic acid as an endogenous modulator of in vitro N-1-naphthylphthalamic acid binding

Author:
Suttle, J.C.
Source:
Plant physiology 1997 v.113 no.2 pp. 519-525
ISSN:
0032-0889
Subject:
naphthalene; linoleic acid; in vitro culture; dose response; nutrient transport; microsomes; phthalates; auxins; binding sites; epicotyls; structure-activity relationships; chemical constituents of plants; Pisum sativum
Abstract:
... An endogenous inhibitor of the in vitro binding of the phytotropin N-1-naphthylphthalamic acid to microsomal membranes was detected in extracts prepared from etiolated pea (Pisum sativum L.) epicotyls. Following extensive purification, the inhibitor was identified as linoleic acid. Authentic linoleic acid inhibited N-1-naphthylphthalamic acid binding noncompetitively in a dose-dependent manner, ex ...

8. Importance of the chiral centers of jasmonic acid in the responses of plants. Activities and antagonism between natural and synthetic analogs

Author:
Holbrook, L.; Tung, P.; Ward, K.; Reid, D.M.; Abrams, S.; Lamb, N.; Quail, J.W.; Moloney, M.M.
Source:
Plant physiology 1997 v.114 no.2 pp. 419-428
ISSN:
0032-0889
Subject:
Helianthus annuus; Brassica napus; measurement; chemical degradation; dose response; jasmonic acid; gene expression; Triticum aestivum; Nicotiana tabacum; esters; stereochemistry; enzyme activity; chemical structure; seed germination; transgenic plants; cotyledons; proteinase inhibitors; reporter genes; chemical constituents of plants; chlorophyll; beta-glucuronidase
Abstract:
... The importance of the two chiral centers at C-3 and C-7 in the molecular structure of jasmonic acid in plant responses was investigated. We separated methyl jasmonate (MeJA) into (3R)- and (3S)-isomers with a fixed stereochemistry at C-3, but epimerization at C-7 is possible. The four isomers of the nonepimerizable analog 7-methyl MeJA were synthesized. These six esters and their corresponding aci ...

9. Phase separation of plant cell wall polysaccharides and its implications for cell wall assembly

Author:
MacDougall, A.J.; Rigby, N.M.; Ring, S.G.
Source:
Plant physiology 1997 v.114 no.1 pp. 353-362
ISSN:
0032-0889
Subject:
Solanum lycopersicum var. lycopersicum; cell walls; polysaccharides; polymers; esters; separation; chemical structure; chemical constituents of plants; cell wall components
Abstract:
... Concentrated binary mixtures of polymers in solution commonly exhibit immiscibility, resolving into two separate phases each of which is enriched in one polymer. The plant cell wall is a concentrated polymer assembly, and phase separation of the constituent polymers could make an important contribution to its structural organization and functional properties. However, to our knowledge, there have ...

10. Glycerol is a suberin monomer. New experimental evidence for an old hypothesis

Author:
Moire, L.; Schmutz, A.; Buchala, A.; Yan, B.; Stark, R.E.; Ryser, U.
Source:
Plant physiology 1999 v.119 no.3 pp. 1137-1146
ISSN:
0032-0889
Subject:
chemical composition; plant development; stems; Gossypium hirsutum; glycerol; Solanum tuberosum; tubers; suberin; esters; alkanes; periderm; molecular conformation
Abstract:
... The monomer composition of the esterified part of suberin can be determined using gas chromatography-mass spectroscopy technology and is accordingly believed to be well known. However, evidence was presented recently indicating that the suberin of green cotton (Gossypium hirsutum cv Green Lint) fibers contains substantial amounts of esterified glycerol. This observation is confirmed in the present ...

11. The pore size of non-graminaceous plant cell walls is rapidly decreased by borate ester cross-linking of the pectic polysaccharide rhamnogalacturonan II

Author:
Fleischer, A.; O'Neil, M.A.; Ehwald, R.
Source:
Plant physiology 1999 v.121 no.3 pp. 829-838
ISSN:
0032-0889
Subject:
pectins; cell walls; chelating agents; Chenopodium album; nutrient deficiencies; calcium; boron; cations; magnesium; pH; esters; sodium; polymers; borates; culture media; cell suspension culture; inorganic ions
Abstract:
... The walls of suspension-cultured Chenopodium album L. cells grown continually for more than 1 year on B-deficient medium contained monomeric rhamnogalacturonan II (mRG-II) but not the borate ester cross-linked RG II dimer (dRG-II-B). The walls of these cells had an increased size limit for dextran permeation, which is a measure of wall pore size. Adding boric acid to growing B-deficient cells resu ...

12. Tobacco O-methyltransferases involved in phenylpropanoid metabolism. The different caffeoyl-coenzyme A/5-hydroxyferuloyl-coenzyme A 3/5-O-methyltransferase and caffeic acid/5-O-hydroxyferulic acid 3/5-O-methyltransferase classes have distinct substrate specificities and expression patterns

Author:
Maury, S.; Geoffroy, P.; Legrand, M.
Source:
Plant physiology 1999 v.121 no.1 pp. 215-223
ISSN:
0032-0889
Subject:
Nicotiana tabacum; transferases; phenylpropanoids; biosynthesis; gene expression; methylation; Tobacco mosaic virus; leaves; isozymes; Escherichia coli; esters; biochemical pathways; lignin
Abstract:
... The biosynthesis of lignin monomers involves two methylation steps catalyzed by orthodiphenol-O-methyltransferases: caffeic acid/5-hydroxyferulic acid 3/5-O-methyltransferases (COMTs) and caffeoyl-coenzyme A (CoA)/5-hydroxyferuloyl-CoA 3/5-O-methyltransferases (CCoAOMTs). Two COMT classes (I and II) were already known to occur in tobacco (Nicotiana tabacum) and three distinct CCoAOMT classes have ...

13. A Novel Red Clover Hydroxycinnamoyl Transferase Has Enzymatic Activities Consistent with a Role in Phaselic Acid Biosynthesis

Author:
Sullivan, MichaelL.
Source:
Plant physiology 2009 v.150 no.4 pp. 1866-1879
ISSN:
0032-0889
Subject:
Escherichia coli; Medicago sativa; Trifolium pratense; acids; alfalfa; amino acid sequences; amino acids; biosynthesis; catechol oxidase; enzyme activity; esters; forage crops; genes; leaves; messenger RNA; nitrogen; oxidation; sequence analysis; stems; storage proteins
Abstract:
... Red clover (Trifolium pratense) leaves accumulate several μmol g⁻¹ fresh weight of phaselic acid [2-O-(caffeoyl)-L-malate]. Postharvest oxidation of such o-diphenols to o-quinones by endogenous polyphenol oxidases prevents breakdown of forage protein during storage. Forage crops like alfalfa (Medicago sativa) lack both polyphenol oxidase and o-diphenols, and breakdown of their protein upon harvest ...
DOI:
10.1104/pp.109.136689
PubMed:
19525325

14. The Magnesium-Chelatase H Subunit Binds Abscisic Acid and Functions in Abscisic Acid Signaling: New Evidence in Arabidopsis

Author:
Wu, Fu-Qing; Xin, Qi; Cao, Zheng; Liu, Zhi-Qiang; Du, Shu-Yuan; Mei, Chao; Zhao, Chen-Xi; Wang, Xiao-Fang; Shang, Yi; Jiang, Tao; Zhang, Xiao-Feng; Yan, Lu; Zhao, Rui; Cui, Zi-Ning; Liu, Rui; Sun, Hai-Li; Yang, Xin-Ling; Su, Zhen; Zhang, Da-Peng
Source:
Plant physiology 2009 v.150 no.4 pp. 1940-1954
ISSN:
0032-0889
Subject:
seedling growth; alleles; chromatography; receptors; phenotype; jasmonic acid; amino acids; esters; naphthaleneacetic acid; Arabidopsis thaliana; magnesium chelatase; stomatal movement; antagonists; indole acetic acid; seed germination; green fluorescent protein; hypersensitivity; mutants; abscisic acid; agonists; point mutation
Abstract:
... Using a newly developed abscisic acid (ABA)-affinity chromatography technique, we showed that the magnesium-chelatase H subunit ABAR/CHLH (for putative abscisic acid receptor/chelatase H subunit) specifically binds ABA through the C-terminal half but not the N-terminal half. A set of potential agonists/antagonists to ABA, including 2-trans,4-trans-ABA, gibberellin, cytokinin-like regulator 6-benzy ...
DOI:
10.1104/pp.109.140731
PubMed:
19535472