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Wetland dicots and monocots differ in colonization by arbuscular mycorrhizal fungi and dark septate endophytes.
Weishampel, Peter A; Bedford, Barbara L.
Afiliación
  • Weishampel PA; Department of Natural Resources, Cornell University, Ithaca, NY, USA. weish004@umn.edu.
  • Bedford BL; Department of Soil, Water, and Climate, University of Minnesota, St. Paul, MN, USA. weish004@umn.edu.
Mycorrhiza ; 16(7): 495-502, 2006 Oct.
Article en En | MEDLINE | ID: mdl-16896797
ABSTRACT
As an initial step towards evaluating whether mycorrhizas influence composition and diversity in calcareous fen plant communities, we surveyed root colonization by arbuscular mycorrhizal fungi (AMF) and dark septate endophytic fungi (DSE) in 67 plant species in three different fens in central New York State (USA). We found colonization by AMF and DSE in most plant species at all three sites, with the type and extent of colonization differing between monocots and dicots. On average, AMF colonization was higher in dicots (58+/-3%, mean+/-SE) than in monocots (13+/-4%) but DSE colonization followed the opposite trend (24+/-3% in monocots and 9+/-1% in dicots). In sedges and cattails, two monocot families that are often abundant in fens and other wetlands, AMF colonization was usually very low (<10%) in five species and completely absent in seven others. However, DSE colonization in these species was frequently observed. Responses of wetland plants to AMF and DSE are poorly understood, but in the fen communities surveyed, dicots appear to be in a better position to respond to AMF than many of these more abundant monocots (e.g., sedges and cattails). In contrast, these monocots may be more likely to respond to DSE. Future work directed towards understanding the response of these wetland plants to AMF and DSE should provide insight into the roles these fungal symbionts play in influencing diversity in fen plant communities.
Asunto(s)

Texto completo: 1 Colección: 01-internacional Banco de datos: MEDLINE Asunto principal: Plantas / Ecosistema / Micorrizas Idioma: En Revista: Mycorrhiza Asunto de la revista: BIOLOGIA Año: 2006 Tipo del documento: Article País de afiliación: Estados Unidos

Texto completo: 1 Colección: 01-internacional Banco de datos: MEDLINE Asunto principal: Plantas / Ecosistema / Micorrizas Idioma: En Revista: Mycorrhiza Asunto de la revista: BIOLOGIA Año: 2006 Tipo del documento: Article País de afiliación: Estados Unidos