Growth and phosphorus nutrition of a Paris-type arbuscular mycorrhizal symbiosis.
New Phytol
; 157(1): 127-134, 2003 Jan.
Article
em En
| MEDLINE
| ID: mdl-33873693
ABSTRACT
⢠Paris -type arbuscular mycorrhizas (AM) are reportedly the most common morphological type of AM; however, most research has focused on the Arum -type. Asphodelus fistulosus , a common weed in southern Australia, forms Paris -type AM when colonised by Glomus coronatum . It is often found in sites with low nutrient levels, and may therefore be dependent on its AM associations for growth and phosphorus (P) nutrition. ⢠A. fistulosus was inoculated with G. coronatum and grown in pots containing a soil/sand mixture with P added to give five soil P concentrations. The plants were grown in a glasshouse and harvested 6 and 9 wk after planting, at which times growth, P nutrition and colonisation were measured. ⢠At low soil P, A. fistulosus showed very marked positive responses to colonisation both in P uptake and growth; both responses decreased with increasing P supply. Colonisation was not greatly reduced by increasing P supply. ⢠This study appears to be one of the first detailed investigations of P responses in a Paris -type AM, providing insight into what is reportedly the more common but less well studied morphological type of AM.
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01-internacional
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MEDLINE
Idioma:
En
Ano de publicação:
2003
Tipo de documento:
Article