Glycolate oxidase is loosely held by microbodies obtained from etiolated barley (Hordeum vulgare L.) leaves depleted of nitrate. Defined centrifugation conditions cause the complete detachment of the enzyme from the microbodies. Addition of nitrate to these plants brings about a greater retention of glycolate oxidase by the microbodies. Synthesis of a nitrate-induced protein seems to be respons...

The 9-kDa thylakoid polypeptide which in vivo carries the iron-sulfur centers A and B of photosystem I was isolated from barley (Hordeum vulgare L.) and the complete amino acid sequence determined. The polypeptide shows a very high degree of homology with the corresponding polypeptides in other plant species. The polypeptide is not post-translationally processed except for the removal of the N-...

The subcellular compartmentation of nucleoside diphosphate kinase (EC 2.7.4.6) and the uridine nucleotides has been studied in leaves. Membrane filtration of barley (Hordeum vulgare L.) leaf mesophyll protoplasts and differential centrifugation of spinach (Spinacia oleracea L.) leaf extracts showed that about half the nucleoside diphosphate kinase is present in the cytosol. The activity is adeq...

In Hordeum vdgare, L., a strain known as "Okina-Mugi" shows variegation with white stripes on the green parts of the plant body. The genetics of the variegated barley was thoroughly studied by S8 (1921). The white stripes are due to the propagation of cells containing white plastids, which are produced by recurring exo-mutations of the green plastids. The strain carries a stimulating gene, by t...

Increases in two extracellular peroxidases were observed following inoculation of barley (Hordeum vulgare L.) with the powdery mildew pathogen (Erysiphe graminis DC.: Fr. f. sp. hordei Em. Marchal). The more prominent isozyme, P8.5, was purified from intercellular wash fluids by acetone precipitation, ion-exchange chromatography, isoelectric focusing, and gel filtration. Purified P8.5 is a heme...

Allelopathy is the direct or indirect harmful effect which one plant produces on another through the production of chemical compounds that escape into the environment. In the presence paper allelopathic relationships were determined in three cereals wheat (Triticum aestivum L.), barley (Hordeum vulgare L.), oat (Avena sativa L.) and vegetable crops spinach (Spinacia oleracea L.), radish (Raphan...

Corn (Zea mays, L.), bean (Phaseolus vulgaris L.), barley (Hordeum vulgare L.), spinach (Spinacia oleracea L.), and sugarbeet (Beta vulgaris L.) grown under iron deficiency, and Potamogeton pectinatus L, and Potamogeton nodosus Poir. grown under oxygen deficiency, contained less chlorophyll than the controls, but accumulated Mg-protoporphyrin IX and/or Mg-protoporphyrin IX monomethyl ester. No ...

Нашими попередніми дослідженнями встановлена висока стійкість окремих зразків H. spontaneum до популяцій рас гельмінтоспоріозної інфекції південної зони України та характер успадковування цієї стійкості у гібридних поколіннях [8, 9] при цьому використання джерел патогенів в селекції рослин це імунологічний напрям, тоді як звичайний селекційний процес охоплює відразу кілька напрямків оцінювання ...