Mostly cyanobacteria protect nitrogenase from damage by intracellular oxygen by carrying out nitrogen fixation in morphologically and physiologically differentiated cells called heterocysts
whereas photosynthesis takes place simultaneously in spatially separated vegetative cells [14-17].
- Cyanobacteria with heterocysts
, predominantly intercalar (inside the filaments).
A larger carcinoma lesion (lower and right corner) with some small lesions composed of tens of heterocysts
(upper-left section) can be observed in Figure 3.
Fructose supports glycogen accumulation, heterocysts
differentiation, N2 fixation and growth of the isolated cyanobiont Anabaena azollae.
Boron requirement for envelope structure and function in Anabaena PCC 7119 heterocysts
These systems consist of a particular association of species with the measurement of morphological traits, such as, volume, maximum linear dimension, surface area and the presence of mucilage, flagella, aerotopes, heterocysts
or siliceous structures.
Except for some groups, the diazotrophic (i.e., [N.sub.2]-fixing) cyanobacteria have specialized cells called heterocysts
only where fixation of gaseous nitrogen is conducted under aerobic conditions.
Certain characteristics make some Cyanobacteria genera particularly suitable for blooming, such as presence of sheath and mucilage; specialized cells for nitrogen fixation (heterocysts
) and resistance (akynetes); aerotopes; tolerance to large fluctuations in temperature; phosphorus storage capacity, among others (DOKULIL; TEUBNER, 2000).
They concluded that this may due to differences in the [N.sub.2] fixation potential in heterocysts
The topics include the synchronization of chromosome dynamics and cell division in bacteria, protein subcellular localization, the cell biology of prokaryotic organelles, cyanobacterial heterocysts
, biofilms, electron cryotomography, and single-molecule and super-resolution imaging in live bacteria cells.
Internationally, genetic improvement programs are heading towards the development of [F.sub.1] Papaya hybrids with the objective of exploiting heterocysts
to increase yield.
Westiellopsis iyengarii, a Filaments with true branching; made of prostrate and erect systems, prostrate system multiseriate, erect system uniseriate; branches short, arising on both the sides: individual sheath around filaments absent; heterocysts
intercalary, quadrate or cylindrical, was investigated for its protein and pigment contents at a rangeof different light intensities (low, medium and high) and qualities (Blue, Green and Red).