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You searched for: Journal name Plant physiology Remove constraint Journal name: Plant physiology Publication year rev 7999-2001 Remove constraint Publication year rev: 7999-2001 Source 2001 v.126 no.3 Remove constraint Source: 2001 v.126 no.3
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1. A large family of genes that share homology with CLAVATA3

Author:
Cock, J.M.; McCormick, S.
Source:
Plant physiology 2001 v.126 no.3 pp. 939-942
ISSN:
0032-0889
Subject:
amino acid sequences; nucleotide sequences; phosphotransferases (kinases); receptors; multigene family
PubMed:
11457943
PubMed Central:
PMC1540125

2. Class I beta-1,3-glucanase and chitinase are expressed in the micropylar endopsperm of tomato seeds prior to radicle emergence

Author:
Wu, C.T.; Leubner-Metzger, G.; Meins, F. Jr.; Bradford, K.J.
Source:
Plant physiology 2001 v.126 no.3 pp. 1299-1313
ISSN:
0032-0889
Subject:
imbibition; seed germination; Solanum lycopersicum var. lycopersicum; messenger RNA; protein synthesis; immunoblotting; beta-glucanase; gene expression; endosperm; abscisic acid; enzyme activity; isozymes; chitinase
Abstract:
... beta-1,3-Glucanase (EC 3.2.1.39) and chitinase (EC 3.2.1.14) mRNAs, proteins, and enzyme activities were expressed specifically in the micropylar tissues of imbibed tomato (Lycopersicon esculentum Mill.) seeds prior to radicle emergence. RNA hybridization and immunoblotting demonstrated that both enzymes were class I basic isoforms. beta-1,3-Glucanase was expressed exclusively in the endosperm cap ...

3. Fatty acid synthesis in pea root plastids is inhibited by the action of long-chain acyl-coenzyme as on metabolite transporters

Author:
Fox, S.R.; Rawsthorne, S.; Hills, M.J.
Source:
Plant physiology 2001 v.126 no.3 pp. 1259-1265
ISSN:
0032-0889
Subject:
Pisum sativum; roots; plastids; fatty acids; lipid metabolism; metabolites; active transport; glucose 6-phosphate; binding proteins; adenosine triphosphate; coenzymes
Abstract:
... The uptake in vitro of glucose (Glc)-6-phosphate (Glc-6-P) into plastids from the roots of 10- to 14-d-old pea (Pisum sativum L. cv Puget) plants was inhibited by oleoyl-coenzyme A (CoA) concentrations in the low micromolar range (1-2 micromolar). The IC50 (the concentration of inhibitor that reduces enzyme activity by 50%) for the inhibition of Glc-6-P uptake was approximately 750 nM; inhibition ...
PubMed:
11457976
PubMed Central:
PMC116482

4. Inhibition of proteasome activity strongly affects kiwifruit pollen germination. Involvement of the ubiquitin/proteasome pathway as a major regulator

Author:
Speranza, A.; Scoccianti, V.; Crinelli, R.; Calzoni, G.L.; Magnani, M.
Source:
Plant physiology 2001 v.126 no.3 pp. 1150-1161
ISSN:
0032-0889
Subject:
application rate; immunohistochemistry; molecular weight; proteinases; proteolysis; biochemical pathways; pollen tubes; enzyme inhibitors; plant morphology; ubiquitin; enzyme activity; pollen; Actinidia deliciosa
Abstract:
... The 26S proteasome is a multicatalytic complex that acts as primary protease of the ubiquitin-mediated proteolytic pathway in eukaryotes. We provide here the first evidence that the proteasome plays a key role in regulating pollen tube growth. Immunoblotting experiments revealed the presence of high levels of free ubiquitin and ubiquitin conjugates in rehydrated and germinating pollen of kiwifruit ...
PubMed:
11457965
PubMed Central:
PMC116471

5. Phenol-oxidizing peroxidases contribute to the protection of plants from ultraviolet radiation stress

Author:
Jansen, M.A.K.; Noort, R.E. van den.; Tan, M.Y.A.; Prinsen, E.; Lagrimini, L.M.; Thorneley, R.N.F.
Source:
Plant physiology 2001 v.126 no.3 pp. 1012-1023
ISSN:
0032-0889
Subject:
ecotypes; Nicotiana sylvestris; peroxidases; Lemna gibba; photosystem II; Spirodela punctata; abiotic stress; enzyme activity; ultraviolet radiation; indole acetic acid; phenolic compounds
Abstract:
... We have studied the mechanism of UV protection in two duckweed species (Lemnaceae) by exploiting the UV sensitivity of photosystem II as an in situ sensor for radiation stress. A UV-tolerant Spirodela punctata G.F.W. Meyer ecotype had significantly higher indole-3-acetic acid (IAA) levels than a UV-sensitive ecotype. Parallel work on Lemna gibba mutants suggested that UV tolerance is linked to IAA ...
PubMed:
11457952
PubMed Central:
PMC116458

6. Production of dwarf lettuce by overexpressing a pumpkin gibberellin 20-oxidase gene

Author:
Niki, T.; Nishijima, T.; Nakayama, M.; Hisamatsu, T.; Oyama-Okubo, N.; Yamazaki, H.; Hedden, P.; Lange, T.; Mander, L.N.; Koshioka, M.
Source:
Plant physiology 2001 v.126 no.3 pp. 965-972
ISSN:
0032-0889
Subject:
Lactuca sativa; genes; dwarf cultivars; gene expression; gibberellins; oxygenases; plant morphology; biosynthesis; transgenic plants; biochemical pathways; promoter regions
Abstract:
... We investigated the effect of overexpressing a pumpkin gibberellin (GA) 20-oxidase gene encoding an enzyme that forms predominantly biologically inactive products on GA biosynthesis and plant morphologyin transgenic lettuce (Lactuca sativa cv Vanguard) plants. Lettuce was transformed with the pumpkin GA 20-oxidase gene downstream of a strong constitutive promoter cassette (El2-35S-omega). The tran ...
PubMed:
11457947
PubMed Central:
PMC116453

7. Role of nitric oxide synthase in the light-induced development of sporangiophores in Phycomyces blakesleeanus

Author:
Maier, J.; Hecker, R.; Rockel, P.; Ninnemann, H.
Source:
Plant physiology 2001 v.126 no.3 pp. 1323-1330
ISSN:
0032-0889
Subject:
Phycomyces; nitric oxide; oxidoreductases; light; biological development; fungal anatomy; biosynthesis; enzyme inhibitors
Abstract:
... Blue light controls the development of sporangiophores in the zygomycete Phycomyces blakesleeanus Burgeff. Light represses the production of microsporangiophores and enhances the development of macrosporangiophores. Inhibition of the biosynthesis of tetrahydrobiopterin, a cofactor of NO synthase, inhibits this photomorphogenesis. Light induces production of citrulline from arginine in the mycelium ...
PubMed:
11457983
PubMed Central:
PMC116489

8. Sequence and analysis of the tomato JOINTLESS locus

Author:
Mao, L.; Begum, D.; Goff, S.A.; Wing, R.A.
Source:
Plant physiology 2001 v.126 no.3 pp. 1331-1340
ISSN:
0032-0889
Subject:
Arabidopsis thaliana; microsatellite repeats; loci; open reading frames; genes; transposons; Solanum lycopersicum var. lycopersicum
Abstract:
... A 119-kb bacterial artificial chromosome from the JOINTLESS locus on the tomato (Lycopersicon esculentum) chromosome 11 contained 15 putative genes. Repetitive sequences in this region include one copia-like LTR retrotransposon, 13 simple sequence repeats, three copies of a novel type III foldback transposon, and four putative short DNA repeats. Database searches showed that the foldback transposo ...
PubMed:
11457984
PubMed Central:
PMC116490

9. Superoxide production by plant homologues of the gp91phox NADPH oxidase. Modulation of activity by calcium and by tobacco mosaic virus infection

Author:
Sagi, M.; Fluhr, R.
Source:
Plant physiology 2001 v.126 no.3 pp. 1281-1290
ISSN:
0032-0889
Subject:
infection; Solanum lycopersicum var. lycopersicum; Nicotiana tabacum; anions; oxidoreductases; Tobacco mosaic virus; calcium; enzyme activity; genes; amino acid sequences; nucleotide sequences; molecular weight; plasma membrane; inorganic ions; superoxide anion
Abstract:
... Genes encoding homologs of the gp91phox subunit of the plasma membrane NADPH oxidase complex have been identified in plants and are hypothesized to be a source of reactive oxygenspecies during defense responses. However, the direct involvement of the gene products in superoxide (O2(-)) production has yet to be shown. A novel activity gel assay based on protein fractionation in native or sodium dod ...
PubMed:
11457979
PubMed Central:
PMC116485

10. The Ca2+ status of the endoplasmic reticulum is altered by induction of calreticulin expression in transgenic plants

Author:
Persson, S.; Wyatt, S.E.; Love, J.; Thompson, W.F.; Robertson, D.; Boss, W.F.
Source:
Plant physiology 2001 v.126 no.3 pp. 1092-1104
ISSN:
0032-0889
Subject:
Nicotiana tabacum; endoplasmic reticulum; protein synthesis; binding proteins; plant proteins; antisense DNA; transgenic plants; Zea mays; genes; heat stress; microsomes; plant physiology; chlorophyll; culture media; nutrient availability; inorganic ions; calcium
Abstract:
... To investigate the endoplasmic reticulum (ER) Ca2+ stores in plant cells, we generated tobacco (Nicotiana tabacum; NT1) suspension cells and Arabidopsis plants with altered levels of calreticulin (CRT), an ER-localized Ca2+-binding protein. NT1 cells and Arabidopsis plants were transformed with a maize (Zea mays) CRT gene in both sense and antisense orientations under the control of an Arabidopsis ...
PubMed:
11457960
PubMed Central:
PMC116466

11. The delayed terminal flower phenotype is caused by a conditional mutation in the CENTRORADIALIS gene of snapdragon

Author:
Cremer, F.; Lonnig, W.E.; Saedler, H.; Huijser, P.
Source:
Plant physiology 2001 v.126 no.3 pp. 1031-1041
ISSN:
0032-0889
Subject:
plant development; alleles; phenotype; mutation; flowers; heterozygosity; amino acid sequences; enzyme activity; transposons; Antirrhinum majus
Abstract:
... The snapdragon (Antirrhinum majus) centroradialis mutant (cen) is characterized by the development of a terminal flower, thereby replacing the normally open inflorescence by a closed inflorescence. In contrast to its Arabidopsis counterpart, terminal flower1, the cen-null mutant displays an almost constant number of lateral flowers below the terminal flower. Some partial revertants of an X-radiati ...
PubMed:
11457954
PubMed Central:
PMC116460

12. Altered expression of SPINDLY affects gibberellin response and plant development

Author:
Swain, S.M.; Tseng, T.S.; Olszewski, N.E.
Source:
Plant physiology 2001 v.126 no.3 pp. 1174-1185
ISSN:
0032-0889
Subject:
Arabidopsis thaliana; gene expression; genes; gibberellins; plant development; transferases; biochemical pathways; transgenic plants; phenotype
Abstract:
... Gibberellins (GAs) are plant hormones with diverse roles in plant growth and development. SPINDLY (SPY) is one of several genes identified in Arabidopsis that are involved in GA response and it is thought to encode an O-GlcNAc transferase. Genetic analysis suggests that SPY negatively regulates GA response. To test the hypothesis that SPY acts specifically as a negatively acting component of GA si ...
PubMed:
11457967
PubMed Central:
PMC116473

13. An Arabidopsis mutant tolerant to lethal ultraviolet-B levels shows constitutively elevated accumulation of flavonoids and other phenolics

Author:
Bieza, K.; Lois, R.
Source:
Plant physiology 2001 v.126 no.3 pp. 1105-1115
ISSN:
0032-0889
Subject:
Arabidopsis thaliana; messenger RNA; naringenin-chalcone synthase; gene expression; leaves; mutants; flavonoids; chemical constituents of plants; biological resistance; ultraviolet radiation; abiotic stress; phenolic compounds
Abstract:
... The isolation and characterization of mutants hypersensitive to ultraviolet (UV) radiation has been a powerful tool to learn about the mechanisms that protect plants against UV-induced damage. To increase our understanding of the various mechanisms of defense against UVB radiation, we searched for mutations that would increase the level of tolerance of Arabidopsis plants to UV radiation. We descri ...
PubMed:
11457961
PubMed Central:
PMC116467

14. An insight into cell elasticity and load-bearing ability. Measurement and theory

Author:
Wei, C.; Lintilhac, P.M.; Tanguay, J.J.
Source:
Plant physiology 2001 v.126 no.3 pp. 1129-1138
ISSN:
0032-0889
Subject:
Allium cepa; cells; tensile strength; turgor; pressure; equations
Abstract:
... We have studied the elasticity and load bearing ability of plant tissue at the cellular level, using onion (Allium cepa) epidermal cells. The Young's modulus and Poisson's ratio of the cells were obtained by loading a tensile force on onion epidermal peels of different turgor pressures, and measuring the elongation and the lateral contraction of the peels. The Young's moduli and the Poisson's rati ...
PubMed:
11457963
PubMed Central:
PMC116469

15. Analysis of flowering time control in Arabidopsis by comparison of double and triple mutants

Author:
Reeves, P.H.; Coupland, G.
Source:
Plant physiology 2001 v.126 no.3 pp. 1085-1091
ISSN:
0032-0889
Subject:
Arabidopsis thaliana; flowering; alleles; loci; biochemical pathways; gibberellins; mutants; photoperiod; genetic variation; vernalization
Abstract:
... Three genetic pathways promote flowering of Arabidopsis under long photoperiods. These pathways are represented by the genes CO, FCA, and GA1, which act in the long-day, autonomous, and gibberellin pathways, respectively. To test whether these are the only pathways that promote flowering under long photoperiods, the co-2 fca-1 ga1-3 triple mutant was constructed. These plants never flowered under ...
PubMed:
11457959
PubMed Central:
PMC116465

16. Binding site for chitin oligosaccharides in the soybean plasma membrane

Author:
Day, R.B.; Okada, M.; Ito, Y.; Tsukada, K.; Zaghouani, H.; Shibuya, N.; Stacey, G.
Source:
Plant physiology 2001 v.126 no.3 pp. 1162-1173
ISSN:
0032-0889
Subject:
soybeans; oligosaccharides; chitin; binding proteins; molecular weight; cell suspension culture; roots; Bradyrhizobium japonicum; nodulation; plasma membrane; application rate; binding sites
Abstract:
... Affinity cross-linking of the plasma membrane fraction to an 125I-labeled chitin oligosaccharide led to the identification and characterization of an 85-kD, chitin binding protein in plasma membrane-enriched fractions from both suspension-cultured soybean cells and root tissue. Inhibition analysis indicated a binding preference for larger (i.e. degrees of polymerization = 8) N-acetylated chitin mo ...
PubMed:
11457966
PubMed Central:
PMC116472

17. Cell cycle regulation of cyclin-dependent kinases in tobacco cultivar blight yellow-2 cells

Author:
Sorrell, D.A.; Menges, M.; Healy, J.M.S.; Deveaux, Y.; Amano, C.; Su, Y.; Nakagami, H.; Shinmyo, A.; Doonan, J.H.; Sekine, M.
Source:
Plant physiology 2001 v.126 no.3 pp. 1214-1223
ISSN:
0032-0889
Subject:
Nicotiana tabacum; cultivars; cell cycle; plant proteins; binding proteins; cultured cells; messenger RNA; enzyme activity; nucleotide sequences; genes; immunocytochemistry; binding sites
Abstract:
... Plants possess two major classes of cyclin-dependent kinases (CDK) with cyclin-binding motifs PSTAIRE (CDK-a) and PPTA/TLRE (CDK-b). Tobacco (Nicotiana tabacum L. cv Bright Yellow-2) cells are the most highly synchronizable plant culture, but no detailed analysis of CDK activities has been reported in this system. Here we describe isolation of new PPTALRE CDKs (Nicta;CdkB1) from Bright Yellow-2 ce ...

18. Cellular and subcellular localization of S-adenosyl-L-methionine:benzoic acid carboxyl methyltransferase, the enzyme responsible for biosynthesis of the volatile ester methylbenzoate in snapdragon flowers

Author:
Kolosova, N.; Sherman, D.; Karlson, D.; Dudareva, N.
Source:
Plant physiology 2001 v.126 no.3 pp. 956-964
ISSN:
0032-0889
Subject:
volatile compounds; immunohistochemistry; corolla; esters; odors; immunocytochemistry; transferases; Antirrhinum majus
Abstract:
... The benzenoid ester, methylbenzoate is one of the most abundant scent compounds detected in the majority of snapdragon (Antirrhinum majus) varieties. It is produced in upper and lower lobes of petals by enzymatic methylation of benzoic acid in the reaction catalyzed by S-adenosyl-L-methionine:benzoic acid carboxyl methyltransferase (BAMT). To identify the location of methylbenzoate biosynthesis, w ...
PubMed:
11457946
PubMed Central:
PMC116452

19. Cysteine synthase overexpression in tobacco confers tolerance to sulfur-containing environmental pollutants

Author:
Noji, M.; Saito, M.; Nakamura, M.; Aono, M.; Saji, H.; Saito, K.
Source:
Plant physiology 2001 v.126 no.3 pp. 973-980
ISSN:
0032-0889
Subject:
Nicotiana tabacum; lyases; gene expression; transgenic plants; sulfur dioxide; sulfites; biosynthesis; cytosol; chloroplasts; glutathione; cysteine; leaves; paraquat; chemical constituents of plants
Abstract:
... Cysteine (Cys) synthase [O-acetyl-L-Ser(thiol)-lyase, EC 4.2.99.8; CSase] is responsible for the final step in biosynthesis of Cys. Transgenic tobacco (Nicotiana tabacum; F1) plantswith enhanced CSase activities in the cytosol and in the chloroplasts were generated by cross-fertilization of two transformants expressing cytosolic CSase or chloroplastic CSase. The F1 transgenic plants were highly to ...
PubMed:
11457948
PubMed Central:
PMC116454

20. Cytokinin overproducing ove mutants of Physcomitrella patens show increased riboside to base conversion

Author:
Schulz, P.A.; Hofmann, A.H.; Russo, V.E.A.; Hartmann, E.; Laloue, M.; Schwartzenberg, K. von.
Source:
Plant physiology 2001 v.126 no.3 pp. 1224-1231
ISSN:
0032-0889
Subject:
cytokinins; mutants; buds; culture media; isopentenyladenine; metabolism; mosses and liverworts; mutation; phenotype
Abstract:
... Ove mutants in the moss Physcomitrella patens can arise from different recessive mutations. These mutants display a much larger number of buds than the wild type (wt) due to a dramatic overproduction of cytokinins (Cks), which are released into theculture medium (T.L. Wang, R. Horgan, D.J. Cove [1981] Plant Physiol 68: 735-738). The amounts of isopentenyladenine (iP) and isopentenyladenosine ([9R] ...
PubMed:
11457972
PubMed Central:
PMC116478