Effect of white clover mosaic virus infection on various processes relevant to symbiotic N2 fixation in red clover
- 1 January 1984
- journal article
- research article
- Published by Canadian Science Publishing in Canadian Journal of Botany
- Vol. 62 (1) , 38-43
- https://doi.org/10.1139/b84-007
Abstract
The effect of white clover mosaic virus infection on several relevant to symbiotic N2 fixation was determined in nodulated red clover (T. pratense L.) plants at 10-leaf, preblooming, blooming and flower-senescence stages of growth, corresponding to 3, 6, 9, and 12 wk after virus inoculation, respectively. Virus infection caused a significant (P .ltoreq. 0.01) reduction of plant growth (top and root weight), nodulation (number and weight of nodules), rhizobial population, nitrogenase activity, and leghemoglobin concentration in the nodules. The presence of a high concentration of virus within nodules at all harvest times was indciated by infectivity assays. The leghemoglobin was localized in the peribacteroidal space by a cytochemical technique. A significant increase in inducible nitrate reductase activity was associated with virus infection of plants.This publication has 0 references indexed in Scilit: