Norflurazon
Mostrando 1-12 de 26 artigos, teses e dissertações.
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1. Recomendações técnicas para o controle de plantas daninhas na cultura do algodoeiro, no Sudoeste brasileiro.
Plantas daninhas: conceito, características, impacto, classificação, reprodução, disseminação, competição, manejo, prevenção, erradicação, controle; Alachlor; Trifluralin; Amônio glufosinato; Clethodim; Clomazone; Cynazine; Diuron; Paraquat; Fluazifop; Linuron; Msma; Norflurazon; Oxadiazon; Oxyfluorfen; Pendimethalin; Propaquizafop.
Campina Grande: Embrapa Algodão. Publicado em: 2011
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2. In Vivo Phytochrome Difference Spectrum from Dark Grown Gametophytes of Anemia Phyllitidis L. Sw. Treated with Norflurazon
An in vivo phytochrome difference spectrum of dark grown Anemia phyllitidis L. Sw. gametophytes has been measured. The spectral characteristics estimated from the difference spectrum were as follows: red maximum at 662 nanometers, far red maximum at 737 nanometers, isosbestic point at 695 nanometers, and a shoulder from 620 to 630 nanometers. To diminish the
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3. Photooxidation of Plastids Inhibits Transcription of Nuclear Encoded Genes in Rye (Secale cereale) 1
Rye (Secale cereale cv Halo) seedlings treated with the herbicide Norflurazon SAN 9789 showed a reduced concentration of mRNA for the small subunit of ribulose-1,5-bisphosphate carboxylase and for the light-harvesting chlorophyll a/b protein. The inhibition of mRNA accumulation by Norflurazon occurred only in the presence of high light intensities and only a
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4. Chlorophyll Synthesis in Dark-Grown Pine Primary Needles1
The pigment content of dark-grown primary needles of Pinus jeffreyi L. and Pinus sylvestris L. was determined by high-performance liquid chromatography. The state of protochlorophyllide a and of chlorophylls during dark growth were analyzed by in situ 77 K fluorescence spectroscopy. Both measurements unambiguously demonstrated that pine primary needles
American Society of Plant Physiologists.
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5. A Cyanobacterium Lacking Iron Superoxide Dismutase Is Sensitized to Oxidative Stress Induced with Methyl Viologen but Is Not Sensitized to Oxidative Stress Induced with Norflurazon1
A strain of Synechococcus sp. strain PCC 7942 with no functional Fe superoxide dismutase (SOD), designated sodB−, was characterized by its growth rate, photosynthetic pigments, and cyclic photosynthetic electron transport activity when treated with methyl viologen or norflurazon (NF). In their unstressed conditions, both the sodB− and wild-type st
American Society of Plant Physiologists.
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6. Light Effects on Several Chloroplast Components in Norflurazon-Treated Pea Seedlings 1
Changes occurring in several chloroplast components during Norflurazon-induced photobleaching of Pisum sativum seedlings were investigated. mRNA steady state levels of the chlorophyll a/b-binding protein of photosystem II, ferredoxin I, the small and large subunits of ribulose 1,5-bisphosphate carboxylase, and pEA214 and pEA207, two other light-responsive ge
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7. Stereoisomers of β-Carotene and Phytoene in the Alga Dunaliella bardawil
Dunaliella bardawil, a halotolerant green alga, was previously shown to accumulate high concentrations of β-carotene when grown outdoors under defined conditions. The β-carotene of algae cultivated under high light intensity in media containing a high salt concentration is composed of approximately 50% all-trans β-carotene and 40% 9-cis β-carotene. We sh
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8. Expression of Erwinia uredovora Phytoene Desaturase in Synechococcus PCC7942 Leading to Resistance against a Bleaching Herbicide.
The gene coding for phytoene desaturase of the bacterium Erwinia uredovora (crtI) was inserted into the chromosome of the cyanobacterium Synechococcus PCC7942 strain R2-PIM8. For expression of crtI in the heterologous host, two constructs with different promoters were introduced into Synechococcus. In the first, crtI was fused to the 5[prime] region of the p
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9. The Fate of Chloroplast Proteins during Photooxidation in Carotenoid-Deficient Maize Leaves 1
Maize seedlings, treated with the herbicide norflurazon to produce a deficiency in carotenoid pigments, were grown in low-fluence-rate light. Under these conditions, which induced chlorophyll biosynthesis while minimizing photooxidation, carotenoid-deficient seedlings showed identical patterns of chloroplast protein accumulation compared with normal seedling
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10. The expression of nuclear genes encoding plastid ribosomal proteins precedes the expression of chloroplast genes during early phases of chloroplast development.
The development of different plant organs (root, hypocotyl, and cotyledons) during seed germination is connected with the transformation of proplastids, which are found in embryonic and meristematic tissues, into amyloplasts in root tissues and into chloroplasts in cotyledons. We have analyzed the expression of nuclear and plastid genes coding for the plasti
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11. Tocopherols Protect Synechocystis sp. Strain PCC 6803 from Lipid Peroxidation1
Tocopherols (vitamin E) are lipid-soluble antioxidants synthesized only by photosynthetic eukaryotes and some cyanobacteria, and have been assumed to play important roles in protecting photosynthetic membranes from oxidative stress. To test this hypothesis, tocopherol-deficient mutants of Synechocystis sp. strain PCC 6803 (slr1736 and slr1737 mutants) were c
American Society of Plant Biologists.
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12. Light-Stimulated Carotenoid Biosynthesis during Transformation of Maize Etioplasts Is Regulated by Increased Activity of Isopentenyl Pyrophosphate Isomerase.
Light-stimulated carotenoid biosynthesis associated with the transformation of etioplasts to chloroplasts was investigated after dark-grown maize (Zea mays) seedlings were transferred into light. These studies focused on the enzymes of the pathway to detect those enzyme activities that were stimulated in the light and thus that were responsible for increased