UNLABELLED The ability to reduce atmospheric nitrogen (N2) to ammonia, known as N2 fixation, is a widely distributed trait among prokaryotes that accounts for an essential input of new N to a multitude of environments. Nitrogenase reductase gene (nifH) composition suggests that putative N2-fixing heterotrophic organisms are widespread in marine bacterioplankton, but their autecology and ecologi...

The Charales (stoneworts) are an ancient monophyletic group with conserved features same in ancesters as well as in present representatives. They are considered to be closely related to the ancestors of land plants. The taxonomy of Charales was delimitated on the basis of morphology and later by fossil characters as well. Nowadays, the higher taxa are relatively well defined and their delimitat...

The persistence of the biocontrol agent Pseudomonas fluorescens CHA0 in the surface horizon of 12 large outdoor lysimeters planted with winter wheat, Phacelia tanacetifolia followed by spring wheat, or maize was monitored for 1 year. Soil was inoculated with a spontaneous rifampin-resistant mutant (CHA0-Rif) of CHA0, and the strain was studied by using colony counts, Kogure's direct viable coun...

Background Nepenthes clipeata is a Critically Endangered plant species with the population at its only location in wild, Gunung (Mount) Kelam Kalimantan, Indonesia, under threat – nutrient relationships have not been studied.Aims To improve understanding of autecology N. by assessing current and providing information on mineral relationships.Methods A survey was undertaken 2019 when numbers hab...