Temperature and the Content of Specific Soluble Sugars of Poa pratensis Infected by Ustilago striiformis or Urocystis agropyri

Madsen, James P.; Hodges, Clinton F.; Nus, Jeffrey L.

doi:10.1086/337390

Cited by 2 publications

(3 citation statements)

References 11 publications

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“…In infected stolons, greater carbon movement to adjacent segments reflected not only translocation by Glyceria but also translocation and carbon usage by Epichloë (Madsen et al, 1983). Since Epichloë does not have an assimilate source of its own, it obtains all of its assimilate from Glyceria.…”

Section: Carbon Movementmentioning

confidence: 99%

“…Movement of assimilate via hyphal connections is possible and fungi are capable of making carbon storage compounds that cannot be used by plants (Isaac, 1992). Moreover, a number of fungi have been shown to alter patterns of assimilate flow in host plants (Billet & Burnett, 1978;Whipps & Lewis, 1981;Madsen et al, 1983;Wright et al, 1995). A general pattern for above-ground fungal pathogens appears to be increased assimilate flow to infected areas of the plant and decreased movement of assimilates to the roots (Whipps & Lewis, 1981).…”

Section: Carbon Movementmentioning

confidence: 99%

“…Parasites and pathogens obtain resources either by directly diverting them from living host tissues or by killing host tissues (Burdon, 1987;Isaac, 1992;Agrios, 1997). In cases where resources are diverted, it has been shown that infection can disrupt the normal pattern of movement for resources such as photosynthates and water (Billet & Burnett, 1978;Madsen et al ., 1983). These changes can arise from modifications in source-sink dynamics or through the prevention of resource movement (Whipps & Lewis, 1981;Isaac, 1992;Wright et al ., 1995).…”

Section: Introductionmentioning

confidence: 99%

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Epichloë glyceriae infection affects carbon translocation in the clonal grass Glyceria striata

Pan

Clay

2004

New Phytologist

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Summary• Systemic fungal endophytes derive resources from hosts and can affect host resource movement and integration. We examined whether infection by Epichloë glyceriae altered clonal growth of its host, Glyceria striata , through changes in physiology.• Growth of severed and intact stolons was compared to examine physiological integration in infected and disinfected (fungicide-treated) plants. To assess whether infection changed carbon (C) movement, labelling with 14 C was used.• We found physiological integration did not affect biomass per stolon for either infected or disinfected plants. The severed stolon to intact stolon ratio for the number of daughter ramets within a plant did not differ by infection status, although fewer daughter ramets were produced on severed stolons of disinfected plants. 14 C movement from the labelled leaf was greater for infected stolons, whereas the labelled leaf retained more assimilate for stolons of disinfected plants.• Previous studies showed that Epichloë glyceriae could increase host clonal growth. In this study, infection changed host assimilate distribution, but did not lead to corresponding differences in stolon growth. The effects of endophytes on host physiology and clonal growth may depend on environmental conditions.

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Section: Carbon Movementmentioning

confidence: 99%