Ethylene is involved in the nodulation phenotype of Pisum sativum R50 ( sym 16 ), a pleiotropic mutant that nodulates poorly and has pale green leaves

Ethylene Inhibitors Restore Nodulation to sym 5 Mutants of Pisum sativum L. cv Sparkle.

The sym 5 mutants of pea, Pisum sativum L. cv Sparkle, do not differ in growth habit from their normal parent and nodulate poorly at a root temperature of 20 degrees C. If inhibitors of ethylene formation or action (Co(2+), aminoethoxyvinylglycine, or Ag(+)) are added to the substrate, nodulation of the sym 5 mutants is increased. Similar treatments of four other mutant sym lines do not restore...

Pleiotropic Effects of sym-17 : A Mutation in Pisum sativum L. cv Sparkle Causes Decreased Nodulation, Altered Root and Shoot Growth, and Increased Ethylene Production.

R82 (sym-17), a stable mutant of Pisum sativum L. cv Sparkle, is described. The shoot growth of the mutant was less than that of its parent under light or dark growth conditions. Gibberellic acid treatment did not normalize the shoot growth of R82. The mutant had thick and short roots. It formed few nodules, but the specific nitrogenase activity was not affected. R82 produced and contained more...

Ethylene is involved in vascular cavity formation in pea (Pisum sativum) primary roots

A lengthy cavity usually forms in the vascular cylinders of pea (Pisum sativum) primary roots in response to sudden flooding at 25°C. This is thought to be a form of aerenchyma. Ethylene has been shown to mediate inducible aerenchyma in maize, therefore the role of ethylene in the formation of cavities in pea roots was examined. Pea seedlings grown for 4 d in 2 L beakers in vermiculite moistene...

Thermoluminescence Investigation of Photoinhibition in the Green Alga, Chlamydobotrys stellata and in Pisum sativum L. Leaves

T. Janda3, W. Wiessnerb, E. Páldic, D. Mendeb, and S. Demeter3 a Institute o f Plant Physiology, Biological Research Center, Hungarian Academy o f Sciences, P.O.B. 521, H-6701 Szeged, Hungary b Pflanzenphysiologisches Institut der Universität Göttingen, Untere Karspüle 2, D-W -3400 Göttingen, Bundesrepublik Deutschland c Agricultural Research Institute o f the Hungarian Academy o f Sciences, H-...

Altered Cell Microfibrillar Orientation in Ethylene-treated Pisum sativum Stems.