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You searched for: Publication Year 1997 Remove constraint Publication Year: 1997 Subject Brassica napus Remove constraint Subject: Brassica napus
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1. Accumulation of ricinoleic, lesquerolic, and densipolic acids in seeds of transgenic arabidopsis plants that express a fatty acyl hydroxylase cDNA from castor bean

Author:
Broun, P.; Somerville, C.
Source:
Plant physiology 1997 v.113 no.3 pp. 933-942
ISSN:
0032-0889
Subject:
Physaria fendleri; genes; Brassica napus; oleic acid; promoter regions; Ricinus communis; gene expression; Lesquerella; genotype; ricinoleic acid; oxygenases; Arabidopsis thaliana; messenger RNA; seeds; quantitative analysis; complementary DNA; transcription (genetics); enzyme activity; gene transfer; biosynthesis; gadoleic acid; transgenic plants; biochemical pathways; genetic variation
Abstract:
... A cDNA encoding the oleate 12-hydroxylase from castor bean (Ricinus communis L.) has previously been shown to direct the synthesis of small amounts of ricinoleic acid (12-hydroxyoctadec-cis-9-enoic acid) in seeds of transgenic tobacco plants. Expression of the cDNA under control of the Brassica napus napin promoter in transgenic Arabidopsis thaliana plants resulted in the accumulation of up to 17% ...
PubMed:
9085577
PubMed Central:
PMC158213

2. Acyl-CoA synthetase in oilseeds: fatty acid structural requirements for activity and selectivity

Author:
Ichihara, K.; Yamane, K.; Hiraon, E.
Source:
Plant & cell physiology 1997 v.38 no.6 pp. 717-724
ISSN:
0032-0781
Subject:
Carthamus tinctorius; seeds; chemical reactions; chemical constituents of plants; unsaturated fatty acids; plant fats and oils; biochemical pathways; structure-activity relationships; Brassica napus; acetate-CoA ligase; saturated fatty acids; enzyme activity
Abstract:
... The substrate specificities and selectivities of acyl-CoA synthetases from maturing oilseeds were investigated to reveal fatty acid structures that the enzymes recognize. The synthetases from rapeseed (Brassica napus) and castor bean (Ricinus communis) activated palmitic acid 16:0 most rapidly among the saturated fatty acids tested. Native unsaturated fatty acids, oleic 18:1 cis-9, linoleic 18:2 c ...
DOI:
10.1093/oxfordjournals.pcp.a029225

3. Agronomic Response of Winter Rapeseed to Rate and Date of Seeding

Author:
Mary K. Moore; Stephen O. Guy
Source:
Agronomy journal 1997 v.89 no.3 pp. 521-526
ISSN:
0002-1962
Subject:
height; plant characteristics; Brassica napus; cultivars; erucic acid; crop yield; seed quality; air temperature; rain; stand density; seed oils; lodging; sowing date; Idaho
Abstract:
... In northern Idaho, winter rapeseed (Brassica napus L.) usually is seeded on summer fallow in early to mid-August at 4.5 to 13.5 kg seed ha⁻¹. A 2-yr study was conducted at Moscow, ID, to quantify crop performance as influenced by date of seeding and seeding rate. In the 1991–1992 and 1992–1993 growing seasons, high-erucic-acid winter rapeseed cultivars, ‘Dwarf Essex’ and ‘Bridger’, were seeded on ...
DOI:
10.2134/agronj1997.00021962008900030024x

4. Allons low linolenic acid summer rape

Author:
Scarth, R.; McVetty, P.B.E.; Rimmer, S.R.
Source:
Canadian journal of plant science 1997 v.77 no.1 pp. 125-126
ISSN:
0008-4220
Subject:
seeds; linolenic acid; quantitative analysis; chemical constituents of plants; Brassica napus; high-yielding varieties; Canada
DOI:
10.4141/P96-093

5. Analysis of limitations to CO2 assimilation on exposure of leaves of two Brassica napus cultivars to UV-B

Author:
Allen, D.J.; McKee, I.F.; Farage, P.K.; Baker, N.R.
Source:
Plant, cell and environment 1997 v.20 no.5 pp. 633-640
ISSN:
0140-7791
Subject:
ribulose-bisphosphate carboxylase; cultivars; carbon dioxide; chlorophyll; carboxylation; fluorescence; enzyme activity; electron transfer; photosystem II; Brassica napus; irradiation; chemical constituents of plants; ultraviolet radiation; stomata
Abstract:
... Apex and Bristol cultivars of oilseed rape (Brassica napus) were irradiated with 0.63 W m-2 of UV-B over 5 d. Analyses of the response of net leaf carbon assimilation to intercellular CO2 concentration were used to examine the potential limitations imposed by stomata, carboxylation velocity and capacity for regeneration of ribulose 1,5-bisphosphate on leaf photosynthesis. Simultaneous measurements ...
DOI:
10.1111/j.1365-3040.1997.00093.x

6. Antibiosis of preferred and non-preferred host-plants for the flea beetle, Phyllotreta cruciferae (Goeze) (Coleoptera: Chrysomelidae)

Author:
Palaniswamy, P.; Lamb, R.J.; Bodnaryk, R.P.
Source:
Canadian entomologist 1997 v.129 no.1 pp. 43-49
ISSN:
0008-347X
Subject:
Phyllotreta cruciferae; antibiosis; food plants; Sinapis alba; Brassica rapa subsp. oleifera; feeding preferences; Brassica juncea; antixenosis; Brassica napus; Thlaspi arvense; Brassica carinata; mortality; body fat
DOI:
10.4039/Ent12943-1

7. Application of improved methods to assess pathways for biosynthesis of long- and very-long-chain fatty acids

Author:
Kroumova, A.B.; Wagner, G.J.
Source:
Journal of agricultural and food chemistry 1997 v.45 no.12 pp. 4701-4705
ISSN:
0021-8561
Subject:
Arabidopsis; Glycine max; embryo (plant); long chain fatty acids; Brassica napus
Abstract:
... Improved microscale methods for analyzing individual carbon atoms of long- and very-long-chain fatty acids are described. These methods allow quantitation of radiolabel in at least 50% of individual carbon atoms from the carboxyl terminal of such fatty acids. These methods have been used to study metabolic pathways leading to long- and very-long-chain fatty acids of seeds. The approach begins with ...
DOI:
10.1021/jf970451b

8. Assessment of the nitrogen status of field-grown canola (Brassica napus) by plant analysis

Author:
Hocking, P.J.; Randall, P.J.; De Marco, D.; Bamforth, I.
Source:
Animal production science 1997 v.37 no.1 pp. 83-92
ISSN:
0816-1089
Subject:
nitrogen fertilizers; nitrogen content; fertilizer requirements; crop yield; Brassica napus; biomass production; application rate; leaves; shoots; New South Wales
DOI:
10.1071/EA95068

9. Base Temperature and Growing-Degree-Hour Requirements for the Emergence of Canola

Author:
Merle F. Vigil; R. L. Anderson; W. E. Beard
Source:
Crop science 1997 v.37 no.3 pp. 844-849
ISSN:
0011-183X
Subject:
planting date; cultivars; seed germination; soil temperature; Brassica napus; Brassica rapa subsp. oleifera; heat sums
Abstract:
... Spring canola (Brassica napus L. and B. rapa L.) is sometimes planted when soil temperatures are below the optimum, causing farmers to have stand losses because of seed rotting in cold soil. Knowledge of the growing-degree hours (GDH) required for emergence of canola from different planting depths could help producers decide when and how deep to plant this crop. Our objectives were to quantify the ...
DOI:
10.2135/cropsci1997.0011183X003700030025x

10. Brassica nap cytoplasmic male sterility is associated with expression of a mtDNA region containing a chimeric gene similar to the pol CMS-associated orf224 gene

Author:
L'Homme, Y.; Stahl, R.J.; Li, X.Q.; Hameed, A.; Brown, G.G.
Source:
Current genetics 1997 v.31 no.4 pp. 325-335
ISSN:
0172-8083
Subject:
cytoplasmic male sterility; messenger RNA; open reading frames; mitochondrial DNA; genome; mutation; amino acid sequences; gene expression; transcription (genetics); Brassica napus; repetitive sequences; plant proteins
Abstract:
... Two different cytoplasmic male-sterility (CMS) systems, nap and pol, are found in the oilseed rape (canola) species Brassica napus. Physical mapping studies have previously shown that organizational differences between the sterile pol and fertile cam mitochondrial genomes are restricted to a relatively small region immediately upstream of the atp6 gene. An approximately 4.5-kb pol mtDNA segment co ...
DOI:
10.1007/s002940050212
PubMed:
9108140

11. Carbohydrate content and enzyme metabolism in developing canola siliques

Author:
King, S.P.; Lunn, J.E.; Furbank, R.T.
Source:
Plant physiology 1997 v.114 no.1 pp. 153-160
ISSN:
0032-0889
Subject:
source-sink relationships; carbohydrate metabolism; cultivars; seeds; quantitative analysis; chemical constituents of plants; cell walls; sucrose; developmental stages; photosynthates; starch; beta-fructofuranosidase; Brassica napus; genetic variation; enzyme activity; sucrose synthase; pods
Abstract:
... Little biochemical information is available on carbohydrate metabolism in developing canola (Brassica napus L.) silique (pod) wall and seed tissues. This research examines the carbohydrate contents and sucrose (Suc) metabolic enzyme activities in different aged silique wall and seed tissues during oil filling. The silique wall partitioned photosynthate into Suc over starch and predominantly accumu ...

12. Chlorophyll breakdown in senescent chloroplasts

Author:
Rodoni, S.; Muhlecker, W.; Anderl, M.; Krautler, B.; Moser, D.; Thomas, H.; Matile, P.; Hortensteiner, S.
Source:
Plant physiology 1997 v.115 no.2 pp. 669-676
ISSN:
0032-0889
Subject:
chloroplasts; metabolism; Hordeum vulgare; Capsicum annuum; fluorescence; chemical reactions; cotyledons; biochemical pathways; cell membranes; Brassica napus; enzyme activity; chlorophyll; oxygenases; chemical structure; metabolites
Abstract:
... The cleavage of pheophorbide (Pheide) a into primary fluorescent chlorophyll (Chl) catabolites (pFCCs) in senescent chloroplasts was investigated. Chloroplast preparations isolated fromsenescent canola (Brassica napus) cotyledons exhibited light-dependent production of pFCC when assay mixtures were supplemented with ferredoxin (Fd). pFCC production in detergent-solubilized membranes was dependent ...

13. Chromosomal localization and characterization of rDNA loci in the Brassica A and C genomes

Author:
Snowdon, R.J.; Kohler, W.; Kohler, A.
Source:
Genome = 1997 v.40 no.4 pp. 582-587
ISSN:
0831-2796
Subject:
nucleic acid hybridization; fluorescence in situ hybridization; loci; ribosomal DNA; genome; Brassica rapa subsp. oleifera; chromosome mapping; genomics; Brassica napus; Brassica oleracea
Abstract:
... Using fluorescence in situ hybridization, we located ribosomal DNA loci on prometaphase chromosomes of the diploid species Brassica rapa and Brassica oleracea and their amphidiploid Brassica napus. Based on comparisons of chromosome morphology and hybridization patterns, we characterized the individual B. napus rDNA loci according to their presumed origins in the Brassica A and C genomes. As repor ...
DOI:
10.1139/g97-076
PubMed:
18464849

14. Conserved patterns of chromosome pairing and recombination in Brassica napus crosses

Author:
Parkin, I.A.P.; Lydiate, D.J.
Source:
Genome 1997 v.40 no.4 pp. 496-504
ISSN:
0831-2796
Subject:
restriction fragment length polymorphism; hybrids; loci; cytogenetic analysis; crossing over; chromosome pairing; crossing; chromosome mapping; Brassica napus; meiosis
Abstract:
... The patterns of chromosome pairing and recombination in two contrasting Brassica napus F1 hybrids were deduced. One hybrid was from a winter oilseed rape (WOSR) X spring oilseed rape cross, the other from a resynthesized B. napus X WOSR cross. Segregation at 211 equivalent loci assayed in the population derived from each hybrid produced two collinear genetic maps. Alignment of the maps indicated t ...
DOI:
10.1139/g97-066
PubMed:
18464842

15. Correlation of ATP/citrate lyase activity with lipid accumulation in developing seeds of Brassica napus L.

Author:
Colin Ratledge; Moray D. V. Bowater; Philip N. Taylor
Source:
Lipids 1997 v.32 no.1 pp. 7-12
ISSN:
0024-4201
Subject:
Brassica napus; acetyl coenzyme A; acetyl-CoA carboxylase; adenosine triphosphate; biosynthesis; centrifugation; chloroplasts; citrates; fatty acids; mitochondria; pollination; seed development; seeds; sucrose
Abstract:
... The temporal distribution of ATP/citrate lyase (ACL) activity in developing seeds of Brassica napus L. closely paralleled both that of acetyl-CoA carboxylase and the overall rate of lipid biosynthesis. Maximum ACL activities (250 nmol acetyl-CoA formed min⁻¹·g fresh seed) were recorded between 35 to 42 d after pollination and, if the in vitro data could be extrapolated to the situation in vivo, co ...
DOI:
10.1007/s11745-997-0002-7
PubMed:
9075187

16. Cytogenetics and morphology of the pentaploid hybrid between Brassica napus and Orychophragmus violaceus and its progeny

Author:
Wu, J.G.; Li, Z.; Liu, Y.; Liu, H.L.; Fu, T.D.
Source:
Plant breeding 1997 v.116 no.3 pp. 251-257
ISSN:
0179-9541
Subject:
mixoploidy; hybrids; intergeneric hybridization; chromosome number; chromosome pairing; polyploidy; chromosome segregation; Brassica napus; progeny; plant morphology
DOI:
10.1111/j.1439-0523.1997.tb00991.x

17. Development of adult and nymphal populations of Lygus lineolaris (Palisot de Beauvois), L. elisus Van Duzee, and L. Borealis (Kelton) (Heteroptera: Miridae) in relation to seeding date and stage of plant development on canola (Brassicaceae) in southern Manitoba

Author:
Leferink, J.H.M.; Gerber, G.H.
Source:
Canadian entomologist 1997 v.129 no.4 pp. 777-787
ISSN:
0008-347X
Subject:
Lygus lineolaris; Lygus elisus; biological development; adults; nymphs; Brassica napus; plant development; population density; sowing date; Manitoba
DOI:
10.4039/Ent129777-4

18. Differential regulation by low temperature of the gene for a RNA-binding protein, rbpA3, in the cyanobacterium Anabaena variabilis strain M3

Author:
Sato, N.; Maruyama, K.
Source:
Plant & cell physiology 1997 v.38 no.1 pp. 81-86
ISSN:
0032-0781
Subject:
Synechocystis; Nicotiana sylvestris; phylogeny; genes; Brassica napus; restriction mapping; Daucus carota; binding proteins; gene expression; Anabaena variabilis; Triticum aestivum; Synechococcus; Arabidopsis thaliana; Zea mays; humans; transcription (genetics); temperature; Mesembryanthemum crystallinum; Spinacia oleracea; nucleotide sequences; Sorghum bicolor; RNA
Abstract:
... The RbpA3 protein of Anabaena variabilis contains one RNA-binding domain with a carboxy-terminal glycine-rich domain. Levels of two transcripts of the rbpA3 gene were differentially regulated by growth temperature. The RbpA3 protein is related to the RbpC protein within the group of cyanobacterial Rbps. ...
DOI:
10.1093/oxfordjournals.pcp.a029089

19. Discrimination of oilseed rape volatiles by the honeybee: combined chemical and biological approaches

Author:
Pham-Delegue, M.H.; Blight, M.M.; Kerguelen, V.; Le Matayer, M.; Marion-Poll, F.; Sandoz, J.C.; Wadhams, L.J.
Source:
Entomologia experimentalis et applicata 1997 v.83 no.1 pp. 87-92
ISSN:
0013-8703
Subject:
Apis mellifera; Brassica napus; volatile compounds; flowers; learning; animal behavior; electroantennography; electrophysiology; proboscis
DOI:
10.1046/j.1570-7458.1997.00160.x

20. Disruption of the phosphate-starvation response of oilseed rape suspension cells by the fungicide phosphonate

Author:
Carswell, M.C.; Grant, B.R.; Plaxton, W.C.
Source:
Planta 1997 v.203 no.1 pp. 67-74
ISSN:
0032-0935
Subject:
Brassica napus; phosphonates; cell suspension culture; nutrient deficiencies; acid phosphatase; enzyme activity; nutrient transport; isozymes; molecular weight; pyruvate kinase; seedlings; phosphates; plasma membrane
Abstract:
... The influence of the anti-fungal agent phosphonate (Phi) on the response of oilseed rape (Brassica napus L. cv. Jet Neuf) cell suspensions to inorganic phosphate (Pi) starvation was examined. Subculture of the cells for 7 d in the absence of Pi increased acid phosphatase (APase; EC 3.1.3.2) and pyrophosphate (PPi)-dependent phosphofructokinase (PFP; EC 2.7.1.90) activities by 4.5- and 2.8-fold, re ...
DOI:
10.1007/s004250050166
PubMed:
9299791