+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

Arbuscular mycorrhizal associations in Lycopodiaceae

, : Arbuscular mycorrhizal associations in Lycopodiaceae. New Phytologist 177(3): 790-801

This study characterizes the molecular and phylogenetic identity of fungi involved in arbuscular mycorrhizal (AM) associations in extant Huperzia and Lycopodium (Lycopodiaceae). Huperzia and Lycopodium are characterized by a life cycle with long-lived autotrophic sporophytes and long-lived mycoheterotrophic (obtain all organic carbon from fungal symbionts) gametophytes. 18S ribosomal DNA was isolated and sequenced from Glomus symbionts in autotrophic sporophytes of seven species of Huperzia and Lycopodium and mycoheterotrophic Huperzia gametophytes collected from the Páramos of Ecuador. Phylogenetic analyses recovered four Glomus A phylotypes in a single clade (MH3) that form AM associations with Huperzia and Lycopodium. In addition, phylogenetic analyses of Glomus symbionts from other nonphotosynthetic plants demonstrate that most AM fungi that form mycoheterotrophic associations belong to at least four specific clades of Glomus A. These results suggest that most mycoheterotrophic plants that form AM associations do so with restricted clades of Glomus A. Moreover, the correspondence of identity of AM symbionts in Huperzia sporophytes and gametophytes raises the possibility that photosynthetic sporophytes are a source of carbon to conspecific mycoheterotrophic gametophytes via shared fungal networks.


PMID: 17971070

DOI: 10.1111/j.1469-8137.2007.02276.x

Other references

Cervelli, D.; Tambasco, D.; Grussu, F.; Marianetti, T.; Gasparini, G.; Pelo, S., 2014: Fat grafting as adjunct refinement procedure in craniosynostosis management. Journal of Craniofacial Surgery 24(2): 691-692

Turczyński, J., 1993: Diagnostic difficulties and efficacy of electroconvulsive therapy in the treatment of lethal catatonia. This publication presents a case of 38-year old woman suffering from schizophrenia, whose body temperature reached 41 degrees C after she had taken 1250 mg of levomepromazine during a suicide attempt. Initially, the dominant symptoms were quantita...

Reis, F.; Petri, M., 1995: Cognitive function in SLE Role of race, education and antiphospholipid antibodies. Arthritis & Rheumatism 38(9 SUPPL ): S170

Parsonnet, V., 1998: Surface labeling on implantable pacemaker pulse-generators. Pacing and Clinical Electrophysiology 21(2): 484-484

Carrasco, L.; Gómez-Villamandos, J.C.; Bautista, M.J.; Hervás, J.; Pulido, B.; Sierra, M.A., 1996: Pulmonary intravascular macrophages in deer. Pulmonary intravascular macrophages (PIMs) have been found in the septal capillaries of deer lungs. Lung samples from adult deer were fixed in 2.5% glutaraldehyde, and then routinely processed for electron microscopy. The main features of the PIMs...

Wallace., 1867: The Parrots are regarded by the author as forming one family, Psittacidae, of the Zygodactyl Paarze. The Parrots are regarded by the author as forming one family, Psittacidae, of the Zygodactyl (Paarzehen) order, and are divided by him into five subfamilies-(1) Stringopinae, (2) Plictolophinae, (8) Sittacinae, (4) Psittacinae, and (5) Trichogloss...

Pers, T.H.; Timshel, P.; Ripke, S.; Lent, S.; Sullivan, P.F.; O'Donovan, M.C.; Franke, L.; Hirschhorn, J.N., 2016: Comprehensive analysis of schizophrenia-associated loci highlights ion channel pathways and biologically plausible candidate causal genes. Over 100 associated genetic loci have been robustly associated with schizophrenia. Gene prioritization and pathway analysis have focused on a priori hypotheses and thus may have been unduly influenced by prior assumptions and missed important caus...

Ryhage, R.; Brandenberger, H., 1978: Negative ion mass spectrometry of phenothiazines. Mass spectra of a number of phenothiazines have been obtained by negative chemical ionization and compared with the corresponding mass spectra by positive chemical ionization and conventional electron impact. NH3, CH4, and N2O were used as reagent...

Kroll, C.; Schneider, F., 1987: Polyploidization of G2M phase cells separated from aerobically and anaerobically grown Ehrlich ascites tumor cells. G2-enriched fractions of Ehrlich ascites tumor cells (up to 80%-85% G2 cells) separated from anaerobically and aerobically cultured asynchronous populations by centrifugal elutriation revealed the same growth characteristics after recultivation un...

Chen, Z.P.; Chen, K.Y., 1994: Asparagine markedly induces the expression of ornithine decarboxylase gene in transformed mammalian cells but not in their untransformed counterparts. We have previously shown that asparagine alone induces a 10-15-fold increase in ornithine decarboxylase (ODC) mRNA level in DF-40 mouse neuroblastoma cells. The induction is due to an accumulation of ODC mRNA through a post-transcriptional stabili...