A symbiosome is a compartment inside a host cell in which the bacteroids
are surrounded by PBM, originated from the plant plasma membrane [11, 12].
Also fhuA::gus fusion was expressed by bacteria in the meristematic zone of pea nodules but not in mature bacteroids
suggesting that vicibactin is not used for iron uptake in R.
(6.) Martirosian G, Bulanda M, Wojcik-Stojek B, et al: Acute appendicitis: the role of enterotoxigenic strains of Bacteroids
fragilis and Clostridium difficile.
Nitrogen that is fixed by the bacteroids
enters the plant's vascular system and can be transported throughout the plant.
Brewin (1991) argues that the symbiosome of nodules has the potential to develop into a lyric vesicle by a decrease in pH that is due to a decrease of nitrogen-fixation products leading ultimately to the death of the bacteroids
. A model involving "nod-ons" and "nod-offs" to explain relationships between nodulation and plant defense reactions has been presented by Mellor and Collinge (1995).
Among the anerobic organisms Peptostreptococcus (5.69%) was the most common followed by Propionibacterium (4.06%) and Bacteroids
Streeter effects of salt stress on amino acid, organic acid, and carbohydrate composition of roots, bacteroids
, and cytosol of alfalfa (Medicago sativa L.).
Thus, the fluorescence observed was not due to PHB in bacteroids
. Optical sectioning of the nodules by confocal microscopy revealed that intercellular spaces of untransformed root nodules appeared to contain red fluorescing loci, most likely stained lipids, which resemble the PHB staining reaction (Menschik, 1953).
coli, aerobic and anaerobic streptococci and bacteroids
Nitrogen fixation ([C.sub.2][H.sub.2] reduction) by Medicago nodules and bacteroids
under sodium chloride stress.
coli in 53.8% of cases, staphylococci in 8 %, B-haemolytic streptococci in 10.2% of cases, bacteroids
in 6 cases and gonococcai, Chlamydia, C perfringes, Mycoplasma hominis and Haemophillus influanzae in rest of the cases.
Most of the core genera were Firmicutes, except Prevotella and Bacteroides
, which belong to Bacteroidetes.