How Parasitic Seed Plants Induce Disease in Other Plants

Knutson, Donald M.

doi:10.1016/b978-0-12-356404-7.50023-9

Cited by 13 publications

(13 citation statements)

References 43 publications

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“…In both cases, we have an emerging understanding of the proximate chemical cues that are involved (Worsham et al 1964;Cook et al 1972;Edwards 1972;Lynn et al 1981;Steffens et al 1982Steffens et al , 1983Atsatt 1983;Press et al 1990;Appel 1993). Finally, some parasitic plants may rely on animal vectors to move seeds to appropriate hosts (Kuijt 1969;Knutson 1979;Calder 1983).…”

Section: Host Choicementioning

confidence: 99%

“…Similarly, although mistletoe leaf area is generally several orders of magnitude lower than that of their hosts, they reduce host growth, partly by diversion of resources (Hull and Leonard 1964;Miller and Tocher 1975;Schulze and Ehleringer 1984;Ehleringer et al 1985Ehleringer et al , 1986bMarshall and Ehleringer 1990;Rey et al 1991;Marshall et al 1994), but also by parasite-induced physiological responses that result in abnormal growth patterns and altered resource allocation of the host (Brochot and Tinnin 1986;Wanner and Tinnin 1986;Ihl et al 1987). Parasitic plants alter the morphology and physiology of their hosts by stimulating production of host growth hormones or by infusing hormones directly into hosts (Drennan and El-Hiweris 1979;Knutson 1979;Livingston et al 1984).…”

Section: Impacts On Hostsmentioning

confidence: 99%

“…Moreover, even fully autotrophic plants may often participate in mycorrhizally mediated parasitism (Chiarello et al 1982;Francis and Read 1984;Grime et al 1987;Moora and Zobel 1996;Walter et al 1996;Watkins et al 1996;Simard et al 1997;Marler et al 1999; but see Robinson and Fitter 1999). Despite the widespread prevalence of parasitic plants, and extensive research into their role as agricultural pests (Knutson 1979;Parker et al 1984;Parker and Riches 1993;Riches and Parker 1995), their role in the structure and function of communities has rarely been considered from a theoretical perspective (but see Price et al 1986;Smith 2000).…”

Section: Introductionmentioning

confidence: 99%

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Parasitic plants: parallels and contrasts with herbivores

2002

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Parasitic plants are common in natural communities, but are largely ignored in plant community theory. Interactions between parasitic plants and hosts often parallel those between herbivores and plants: both types of consumers display host preferences, reduce host biomass and alter host allocation patterns, modify plant community structure and dynamics, and mediate interactions between host plants and other organisms. In other cases, basic differences in mobility, hormonal and elemental composition and resource capture between plants and animals lead to different effects: parasitic plants have broad host ranges, affect and are affected by host plant physiology because of similar hormonal pathways between parasite and host, do not alter nutrient cycling as extensively as do herbivores, and may simultaneously parasitize and compete with hosts. Many fundamental aspects of the ecology of parasitic plants remain poorly studied, and research to date has been dominated by laboratory studies and studies of crop pests, rather than by studies of natural communities.

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Section: Host Choicementioning

confidence: 99%

Section: Impacts On Hostsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Parasitic plants: parallels and contrasts with herbivores

2002

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“…We emphasize that the parasitism of C. partita on Z. diphylla may act beyond the redirection of resources and the hormonal control of the host plant, as has been described for many interactions involving other species of parasitic plants (e.g., Knutson 1979;Puustinen & Salonen 1999;Pennings & Callaway 2002;Runyon et al 2008). In this sense, cell division processes during the development of vegetative and generative cells of pollen grains of Z. diphylla may also be affected by parasites.…”

mentioning

confidence: 69%

“…In addition to photosynthate reallocation, holoparasitic plants may stimulate the secretion of hormones by the host plant, directly inoculating the host structures with their own hormones or mRNA (Knutson 1979;Ihl et al 1984;Westwood et al 2010). In this sense, holoparasitic plants may negatively impact many metabolic and physiological aspects of their host plants, such as stomata opening, photosynthesis rate, transpiration, hormone secretion or water-use efficiency (Goldstein et al 1989;Fernandes et al 1998;Sala et al 2001;Runyon et al 2008;Prider et al 2009).…”

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confidence: 99%

A holoparasitic plant severely reduces the vegetative and reproductive performance of its host plant in the Caatinga, a Brazilian seasonally dry forest

et al. 2017

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Host-parasite interactions between plants may reduce the vegetative and reproductive performance of the host plant. Although it is well established that parasitic plants may negatively aff ect the metabolism and the number of vegetative/reproductive structures of their hosts, the eff ects of this interaction on the reproductive characteristics of the host plant are poorly understood. Here we document the interaction between Cuscuta partita (Convolvulaceae) and its main host, Zornia diphylla (Fabaceae), in the Caatinga of northeastern Brazil. We measured diverse reproductive/ vegetative attributes of Z. diphylla in 60 plots randomly distributed in patches that were parasitized and not parasitized by C. partita. Both vegetative and reproductive attributes, such as the number of branches, leaves and fl owers, and the individual biomass of Z. diphylla were signifi cantly reduced by the parasitism. Th e number of pollen grains and ovules per fl ower were not aff ected by the parasitism, but since the parasitism reduced fl ower production, the total number of pollen and ovules per individual and population may also be reduced. Additionally, pollen viability was signifi cantly reduced in the fl owers of parasitized individuals. We conclude that C. partita may negatively impact the vegetative and reproductive performance of its main host, Z. diphylla in distinct ways in the Caatinga.

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Host Plant Influence on Haustorial Growth and Development of Indian Sandalwood (Santalum album)

Rocha

Santhoshkumar

2022

Materials Horizons: From Nature to Nanomaterials

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How Parasitic Seed Plants Induce Disease in Other Plants

Cited by 13 publications

References 43 publications

Parasitic plants: parallels and contrasts with herbivores

Parasitic plants: parallels and contrasts with herbivores

A holoparasitic plant severely reduces the vegetative and reproductive performance of its host plant in the Caatinga, a Brazilian seasonally dry forest

Host Plant Influence on Haustorial Growth and Development of Indian Sandalwood (Santalum album)

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