Effects of isoxaben on sensitive and tolerant plant cell cultures .I. Metabolic fate of isoxaben

International audience

Effect of a suicide-substrate of cytochrome P-450 on the metabolism of phenylureas in wheat plants

National audience

Pesticides : interactions phytotoxiques

National audience

Localization within chloroplasts of protoporphyrinogen oxidase, the target enzyme for diphenylether-like herbicides

International audience

Induced changes of chlorotoluron metabolism in wheat cell suspension cultures

International audience

Etude sur le mode d'action d'un herbicide : l'isoxaben. Effets sur des cultures de cellules de soja sensibles et tolerantes

National audience

Effect of mixed function oxidase inhibitors on the toxicite chlortoluron and isoproturon to wheat

International audience

Les herbicides

Mode of action of the herbicide siduron on wheat

International audience

Protorphyrinogen oxidase inhibition by three peroxidizing herbicides : oxadiazon , LS 82-556 and M and B 39279

International audience

The double stranded RNA associated with the 447 cytoplasmic male sterelity in Vicia faba is packages together with its replicase in cytoplasmic membranous vesicles

33 ref.; International audience

La sterilite male nucleo-cytoplasmique chez la feverole Vicia faba L. :2. Etude cytologique et biochimique de particules de type viral associees a la sterilite male.

National audience

Immunodetection of a 90 000-Mr polypeptide related to yeast plasma membrane ATPase in plasma membrane from maize shoots

International audience

Recherche: mecanismes physiologiques de la selectivite des herbicides

National audience

Vers une maitrise du caractère de la stérilité mâle nucleocytoplasmique (SMC) ?

National audience

New developments in CMS in Vicia faba L.

International audience

Characterization of ATPase from maize shoot plasma membrane prepared by partition in an aqueous polymer two phase system

41 ref.; International audience

A secondary mode of action of the herbicide lenacil: Modification of K+ permeability of Acer pseudoplatanus cells

Abstract The action of lenacil on plasmalemma permeability to K+, transmembrane electric potential difference (PD) calculated from the tetraphenylphosphonium distribution, proton extrusion and intracellular pH of Acer pseudoplatanus cells calculated from the 5,5-dimethyloxazolidine,4-dione distribution, was studied and compared with the action of fusicoccin (FC) and diethylstilbestrol (DES). The three compounds temporarily stimulated the rate of 86Rb+ uptake with a half-maximum effect at 5.0 μM for 3-cyclohexyl-6, 7-dihdro-1H-cyclopentapyrimidine-2,4(3H,5H)-dione (lenacil). Lenacil and FC had no action on transmembrane electric potential difference, whereas DES decreased it. Lenacil inhibit…

Recent advances in the mode of action of diphenyl ethers and relates herbicides

61 ref.; International audience

Les herbicides. Mode d'action et principes d'utilisation

National audience

Cytoplasmic particles associated with CMS in Faba bean (Vicia faba L.)

International audience

Recherches sur les herbicides: etat des connaissances et perspectives

National audience

Etude d'une sterilite male nucleo-cytoplasmique chez la feverole. Presence de particules cytoplasmiques contenant de l'ARN.

National audience

Studies on the mode of action of acifluorfen-methyl in nonchlorophyllous soybean cells

International audience

Characterization of a proton pump from Acer pseudoplatanus cell microsomes

Abstract An Acer pseudoplatanus cell microsomal fraction was enriched in ATPase by sedimentation through a sucrose cushion and treatment with Triton X-100. This activity, which reached 0.9 μmol P i min −1 mg −1 protein, was specific for ATP, slightly stimulated by K + , inhibited by orthovanadate and diethylstilbestrol, insensitive to oligomycin and azide, and had a K m - value of 0.51 mM for MgATP. ATP-dependent proton translocation was demonstrated by the ΔpH probe acridine orange. This activity had a optimum at pH 6.5, was substrate specific for ATP, and was strongly dependent on K + . Preparations of plasma membrane ATPase from A. pseudoplatanus cell culture thus posses biochemical prop…

Protorphyrinogen oxidase as a molecular target for diphenyl ether herbicides

32 ref.; International audience

Effects of isoxaben on sensitive and tolerant plant cell cultures .II. Cellular alterations and inhibition of the synthesis of acid-insoluble cell wall material

International audience

RNA containing intracellular particles in cytoplasmic male sterile Faba bean.

International audience

Absorption, translocation and metabolism of pyridate in a tolerant crop (Zea mays) and two susceptible weeds (Polygonum lapathifolium L. and Chenopodium album L.)

Summary Absorption, translocation and metabolism of 14C-pyridate were compared in tolerant maize. moderately susceptible Polygonum lapathifolium and susceptible Chenopodium album. Foliar absorption was limited in all species, but comparatively higher penetration levels were observed in younger leaves of dicotyledonous species. The absorbed radioactivity was not very mobile and translocation appeared mainly sym-plastic. Herbicide selectivity could not be explained on the basis of absorption and transport. Chenopodium and P. lapathifolium degraded pyridate and formed unstable water-soluble conjugates that easily released a phytotoxic metabolite. By contrast, more stable unidentified water-sol…

Characterization of the mode of action of the experimental herbicide LS 82-556 [ (S)3-N-(methylbenzyl) carbamyl-5-propionyl-2,6 lutidine

34 ref.; International audience

Mode d'action physiologique du EL-107 (isoxaben)

National audience

Mecanismes physiologiques de la selectivite des herbicides

National audience

Inhibition of adenosine triphosphatase activity from a plasma membrane fraction of Pseudoplatanus cells by carbanilate derivatives

International audience