Physiological Integration of the Clonal Plant Carex arenaria and Its Response to Soil-Borne Pathogens

D’Hertefeldt, Tina; Putten, Wim H. van der

doi:10.2307/3547044

Cited by 79 publications

(56 citation statements)

References 20 publications

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“…Previous research has generally shown detrimental effects of pathogens on clonal growth (García-Guzmán & Burdon 1987;Nus & Hodges 1990;Wennströ m 1994;D'Hertefeldt & Van der Putten 1998;Piqueras 1999). For instance, Poa pratensis plants infected by Ustilago striiformis produced fewer rhizomes than uninfected plants (Nus & Hodges 1990).…”

Section: Introductionmentioning

confidence: 99%

Infection by the systemic fungus Epichloë glyceriae alters clonal growth of its grass host, Glyceria striata

Pan

Clay

2003

Proc. R. Soc. Lond. B

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Parasites and pathogens are hypothesized to change host growth, reproduction and/or behaviour to increase their own transmission. However, studies which clearly demonstrate that parasites or pathogens are directly responsible for changes in hosts are lacking. We previously found that infection by the systemic fungus Epichloë glyceriae was associated with greater clonal growth by its host, Glyceria striata. Whether greater clonal growth resulted directly from pathogen infection or indirectly from increased likelihood of infection for host genotypes with greater clonal growth could not be determined because only naturally infected and uninfected plants were used. In this study, we decoupled infection and host genotype to evaluate the role of pathogen infection on host development and clonal growth. We found that total biomass production did not differ for clones of the same genotype, but infected clones allocated more biomass to clonal growth. Disinfected clones had more tillers and a greater proportion of their biomass in the mother ramet. Infected clones produced fewer tillers but significantly more and longer stolons than disinfected clones. These results support the hypothesis that pathogen infection directly alters host development. Parasite alteration of clonal growth patterns might be advantageous to the persistence and spread of host plants in some ecological conditions.

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Section: Introductionmentioning

confidence: 99%

Infection by the systemic fungus Epichloë glyceriae alters clonal growth of its grass host, Glyceria striata

Pan

Clay

2003

Proc. R. Soc. Lond. B

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“…In aquatic ecosystems associated with flooding, sedimentation can cause burial of aquatic plants by sand (Lowe et al 2010, Pan et al 2012. Previous studies have demonstrated that burial may change abiotic and biotic conditions such as light radiation (Brown 1997), temperature (Baldwin & Maun 1983, Zhang & Maun 1990) and activity of pathogens (van der Putten et al 1993, D'Hertefeldt & van der Putten 1998, thus modifying plant morpho logy and physiology, and affecting survival and growth (Little & Maun 1996, Maun 1998, Yu et al 2002. Moreover, organic reserves in plant tissue are critical for winter stress tolerance and rapid regrowth (Volenec et al 1996).…”

Section: Introductionmentioning

confidence: 99%

Overwintering survival and regrowth of the invasive plant Eichhornia crassipes are enhanced by experimental warming in winter

Wang¹,

Yu²,

Xie³

et al. 2013

Aquat. Biol.

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The distribution of the invasive aquatic plant Eichhornia crassipes is considered to be limited by winter survival. Therefore, winter warming, as well as characteristics of overwintering organs, are expected to affect its distribution and survival. An experiment was conducted to analyze the effects of winter warming and stem base treatments (size or burial) on winter survival, regrowth and thus performance of floating or rooted plants of E. crassipes using a simulated warming system in a greenhouse. Winter warming significantly increased the percentage survival in both forms of the plant and facilitated its regrowth and clonal propagation. Stem base size played an important role in determining survival, regrowth and vegetative propagation. Moreover, water cover and sediment burial of stem bases facilitated overwintering. After winter survival, a larger fraction of the biomass of E. crassipes was allocated to shoots. These results suggest that, with climate warming, the invasive ability of E. crassipes will be enhanced, with distribution spreading to the north into central and north China, favouring plants with large stem bases. KEY WORDS: Biomass allocation · Sediment burial · Stem base · Survival rate · Winter warmingResale or republication not permitted without written consent of the publisher Aquat Biol 19: 45-53, 2013 improve the survival and growth of clonal plants under natural disturbances and environmental stresses (Madsen et al. 1993, Stuefer & Huber 1999, Dong et al. 2010. Therefore, greater stored resources contained in larger storage organs can be retranslocated to attached ramets and may facilitate the biomass accumulation and production of new ramets (Danckwerts & Gordon 1989, Baur-Höch et al. 1990, Stuefer & Huber 1999. Although sediment burial and storage organ size may contribute to winter survival and regrowth of plants during the overwintering period, their effects on overwintering of plants are still largely unknown, especially for invasive aquatic plants.Biomass allocation is a fundamental aspect of the competive ability of invasive aquatic plants, which often allocate a large fraction of their biomass to form canopy and to support the rapid spring growth that allows them to suppress other species (Madsen 1991, Sytsma & Anderson 1993. For instance, 2 invasive aquatic plants, water hyacinth Eichhornia crassipes and alligator weed Alternanthera philoxeroides, can form dense stands above the water surface that exclude almost all other species (Aston 1977, Julien & Bourne 1988. Villamagna & Murphy (2010) stated that greater allocation to shoots may enhance water hyacinth's ability to shade out other aquatic plants and algae in the water column. However, to our knowledge, little information exists on the effects of winter warming on the biomass allocation pattern of regrowth after winter survival for invasive aquatic plants.Eichhornia crassipes, originating from tropical South America, is a mat-forming aquatic plant with floating and rooted forms, and is one of the world's most preva...

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“…Clonal plants infected by parasites and pathogens also experience reduced growth, survivorship, and reproduction (Nus & Hodges, 1990;Frantzen, 1994;D'Hertefeldt & van der Putten, 1998;Piqueras, 1999, but see Wennström, 1994;Pan & Clay, 2002, 2003. However, how they affect the physiology of clonal plants is not well understood.…”

Section: Introductionmentioning

confidence: 99%

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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Physiological Integration of the Clonal Plant Carex arenaria and Its Response to Soil-Borne Pathogens

Cited by 79 publications

References 20 publications

Infection by the systemic fungus Epichloë glyceriae alters clonal growth of its grass host, Glyceria striata

Infection by the systemic fungus Epichloë glyceriae alters clonal growth of its grass host, Glyceria striata

Overwintering survival and regrowth of the invasive plant Eichhornia crassipes are enhanced by experimental warming in winter

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

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