bacteroids

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• Root nodule — Cross section though a soybean (Glycine max Essex ) root nodule. The bacterium, Bradyrhizobium japonicum, colonizes the roots and establishes a nitrogen fixing symbiosis. This high magnification image shows part of a cell with single bacteroids… …   Wikipedia

• rhizobium — noun (plural rhizobia) Etymology: New Latin, from rhiz + Greek bios life more at quick Date: 1921 any of a genus (Rhizobium) of small heterotrophic soil bacteria capable of forming symbiotic nodules on the roots of leguminous plants and of there… …   New Collegiate Dictionary

• Nitrogen fixation — is the natural process, either biological or abiotic, by which nitrogen (N2) in the atmosphere is converted into ammonia (NH3).[1] This process is essential for life because fixed nitrogen is required to biosynthesize the basic building blocks of …   Wikipedia

• Rhizobia — (from the Greek words rhiza = root and bios = Life) are soil bacteria that fix nitrogen (diazotrophy) after becoming established inside root nodules of legumes (Fabaceae). The rhizobia cannot independently fix nitrogen, and requires a plant host …   Wikipedia

• Denitrification — Nitrogen cycle. Denitrification is a microbially facilitated process of nitrate reduction that may ultimately produce molecular nitrogen (N2) through a series of intermediate gaseous nitrogen oxide products. This respiratory process reduces… …   Wikipedia

• Periapical cyst — Classification and external resources CT scan through head showing a right periapical cyst ICD 10 K …   Wikipedia

• Robert B Mellor — Robert B. Mellor PhD DSc (b 1955, Huddersfield) Research and Theories In biology Robert Mellor is probably best remembered for his unified vacuole theory which states that in endosymbioses [http://en.wikipedia.org/wiki/Symbioses] generally, the… …   Wikipedia

• peribacteroid membrane — Membrane derived from the plasma membrane of a plant cell and that surrounds the nitrogen fixing bacteroids in legume root nodules. Has a high lipid content and may regulate the passage of material from the plant cell cytoplasm to the symbiotic… …   Dictionary of molecular biology

• Isaac Krassilchik — (1857 1920) est un naturaliste d origine russe. Sommaire 1 Biographie …   Wikipédia en Français

• root nodule — A small round mass of cells attached to the roots of leguminous plants, containing symbiotic nitrogen fixing bacteroids, particularly Rhizobium spp …   Glossary of Biotechnology

• Бактероиды — * бактэроіды * bacteroids внутриклеточные азотфиксирующие симбионты, выявленные в узелках корешков бобовых растений (клубеньковые бактерии). Б. это свободно живущие бактерии рода , образующие в корнях бобовых крупные клетки с высоким содержанием… …   Генетика. Энциклопедический словарь