Senescence of Mycelia

Marbach, Karin; Ståhl, Ulf

doi:10.1007/978-3-662-11908-2_11

Cited by 3 publications

(1 citation statement)

References 115 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…All of these virus-free, attenuated strains were found to have increased levels of cyanide-resistant respiration (alternative oxidase activity) suggesting that mtDNA mutations that cause deficiencies in cytochrome-mediated respiration are associated with this type of hypovirulence (Baidyaroy et al, 2000b;Mahanti et al, 1993;Monteiro-Vitorello et al, 1995). The cytoplasmic transmission of the metabolic defects and degenerate growth patterns that are characteristic of the dsRNA-free, hypovirulent mutants of C. parasitica suggest that their syndromes are comparable to those caused by mtDNA mutations in Neurospora, Podospora and Aspergillus (reviewed in Bertrand, 2000;Bertrand and Baidyaroy, 2002;Griffiths, 1992;Marbach and Stahl, 1994). This type of hypovirulence has been referred to as ''mitochondrial hypovirulence'' to distinguish it from hypovirulence syndromes that are caused by dsRNA viruses (Baidyaroy et al, 2000b;MonteiroVitorello et al, 1995).…”

Section: Introductionmentioning

confidence: 95%

Mitochondrial plasmid-like elements in some hypovirulent strains of Cryphonectria parasitica

Baidyaroy

Hausner

Fulbright

et al. 2011

Fungal Genetics and Biology

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 95%

Mitochondrial plasmid-like elements in some hypovirulent strains of Cryphonectria parasitica

Baidyaroy

Hausner

Fulbright

et al. 2011

Fungal Genetics and Biology

View full text Add to dashboard Cite

Life Cycle of Glomus Species in Monoxenic Culture

2005

View full text Add to dashboard Cite

Nuclei of symbiotic arbuscular mycorrhizal fungi as revealed by in vivo two-photon microscopy

et al. 1999

View full text Add to dashboard Cite

The present work reports the results obtained from in vivo studies on the distribution and behavior of nuclei of two arbuscular mycorrhizal (AM) fungi growing in symbiosis with tomato root organ cultures (AM monoxenic cultures). Upon staining with 4',6-diamidino-2-phenylindole and two-photon microscopy (2PM) observations, symbiotic thick runner hyphae appeared mostly opaque to 2PM and did not reveal nuclei within them; thin runner hyphae showed dimly stained nuclei along them, whereas nuclei were clearly visible within the branches of the so-called branched absorbing structures. When visible, nuclei appeared anchored laterally at regular intervals along the symbiotic AM extraradical hyphae. Other nuclei migrate through the hyphal central core; this migration occurs in pulses. Simultaneous observations on different areas of extraradical AM mycelium revealed the existence of lysed compartments along the fungal hyphae, containing nuclei remnants and/or chromatin masses. All these results give new insights in (i) the differential permeability of AM hyphae in the symbiotic versus the asymbiotic state; (ii) the behavior and distribution of nuclei along the symbiotic extraradical mycelium; (iii) the occurrence of ageing events within the AM fungal colony; and (iv) the existence of "healing" mechanisms aiming to restrict the damage induced by such ageing or lytic events. An AM fungal strategy for hyphal survival under adverse conditions is also suggested.

show abstract

Senescence of Mycelia

Cited by 3 publications

References 115 publications

Mitochondrial plasmid-like elements in some hypovirulent strains of Cryphonectria parasitica

Mitochondrial plasmid-like elements in some hypovirulent strains of Cryphonectria parasitica

Life Cycle of Glomus Species in Monoxenic Culture

Nuclei of symbiotic arbuscular mycorrhizal fungi as revealed by in vivo two-photon microscopy

Contact Info

Product

Resources

About