ORGANIZATION OF MITOCHONDRIA IN THE GROWING HYPHAE OF NEUROSPORA CRASSA
T.V. Potapova,1 L.Yu. Boitzova, S.A. Golyshev, A.V. Popinako
A.N. Belozersky Scientific Research Institute of Physico-Chemical Biology, Moscow Lomonosov State University;
1 e-mail: potapova@genebee.msu.su
In vivo fluorescent labeling of mitochondria in Neurospora crassa showed the concentration of filamentous mitochondria within 30 µm of apex in growing hyphae.
These mitochondrial assemblies propagated forward with the elongation of hyphae, split and segregated as the growing tip bifurcated and formed de novo when new branches
formed farther away from the apex. The efficiency of the mitochondria concentration in the apical 30 µm zone is related to the growth rate and identical in hyphae cultivated in glucose- and
sorbitol-containing media. The obtained data are discussed in connection with the behavior of microtubules in growing hyphae as well as with the electric heterogeneity of
N. crassa hyphal apex described previously.
Key words: Neurospora crassa, tip growth, movement of mitochondria, glucose deficiency, intercellular interactions
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