| methylobacterium nodulans sp. nov., for a group of aerobic, facultatively methylotrophic, legume root-nodule-forming and nitrogen-fixing bacteria. | data on 72 non-pigmented bacterial strains that specifically induce nitrogen-fixing root nodules on the legume species crotalaria glaucoides, crotalaria perrottetii and crotalaria podocarpa are reviewed. by sds-page analysis of total protein patterns and by 16s rrna pcr-rflp, these strains form a homogeneous group that is separate from other legume root-nodule-forming bacteria. the 16s rrna gene-based phylogeny indicates that these bacteria belong to the genus methylobacterium. they can grow on ... | 2004 | 15545469 |
| role of methylotrophy during symbiosis between methylobacterium nodulans and crotalaria podocarpa. | some rare leguminous plants of the genus crotalaria are specifically nodulated by the methylotrophic bacterium methylobacterium nodulans. in this study, the expression and role of bacterial methylotrophy were investigated during symbiosis between m. nodulans, strain ors 2060t, and its host legume, crotalaria podocarpa. using lacz fusion to the mxaf gene, we showed that the methylotroph genes are expressed in the root nodules, suggesting methylotrophic activity during symbiosis. in addition, loss ... | 2005 | 16255245 |
| nodulation of cyclopia spp. (leguminosae, papilionoideae) by burkholderia tuberum. | species of the genus burkholderia, from the betaproteobacteria, have been isolated from legume nodules, but so far they have only been shown to form symbioses with species of mimosa, sub-family mimosoideae. this work investigates whether burkholderia tuberum strains stm678 (isolated from aspalathus carnosa) and dus833 (from aspalathus callosa) can nodulate species of the south african endemic papilionoid genera cyclopia (tribe podalyrieae) and aspalathus (crotalarieae) as well as the promiscuous ... | 2007 | 17881339 |
| nodulation of crotalaria podocarpa dc. by methylobacterium nodulans displays very unusual features. | crotalaria are plants of the fabaceae family whose nodulation characteristics have been little explored despite the recent discovery of their unexpected ability to be efficiently nodulated in symbiosis with bacteria of the genus methylobacterium. it has been shown that methylotrophy plays a key role in this unusual symbiotic system, as it is expressed within the nodule and as non-methylotroph mutants had a depleting effect on plant growth response. within the nodule, methylobacterium is thus abl ... | 2011 | 21422120 |
| herbaceous legume encroachment reduces grass productivity and density in arid rangelands. | worldwide savannas and arid grasslands are mainly used for livestock grazing, providing livelihood to over a billion people. while normally dominated by perennial c4 grasses, these rangelands are increasingly affected by the massive spread of native, mainly woody legumes. the consequences are often a repression of grass cover and productivity, leading to a reduced carrying capacity. while such encroachment by woody plants has been extensively researched, studies on similar processes involving he ... | 2016 | 27855205 |