Host-Parasite Interactions in Higher Plants

Atsatt, Peter R.

doi:10.1007/978-3-642-68153-0_14

Cited by 47 publications

(38 citation statements)

References 48 publications

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“…Assuming that such infections are in the minority and no other site-specific factors have influenced the outcome unduly, results indicate that the wide host range of dactylanthus (Ecroyd 1996;Moore 1940) does not translate to an equal preference for different hosts. This is in line with findings for other holoparasitic plants (Atsatt 1983;Gibson and Watkinson 1989;Marvier and Smith 1997;Press and Phoenix 2005) and would be a first step to identify principal and minor hosts of dactylanthus (Atsatt 1983;Pennings and Callaway 2002). Host preference may be due to both pre-infection and post-infection factors, where the former determines availability of suitable roots in space and time and the latter the physiological 'match' (Atsatt 1983;Press and Phoenix 2005) between host (species or individual) and parasite (Pennings and Callaway 2002;Watson 2009).…”

Section: Dominant Hostsupporting

confidence: 93%

“…Successful initial establishment from seed will depend on the availability in space (distribution and density) and time of both germinating seeds (Fenner 1995;Holzapfel 2001) and suitable host roots (Atsatt 1983). The two sowing methods determined availability of seed differently, maximising it either in space (broadsown) or in time (central-sown).…”

Section: Sowing Methodsmentioning

confidence: 99%

“…Á Mystropetalaceae Á Host preference Á Sowing method Á Dactylanthus taylorii Á New Zealand Introduction Despite a high percentage of rare or threatened species among holoparasitic angiosperms globally, little research has been undertaken on the establishment of populations (Marvier 1996), even though the need has been recognised. This seems due to the complication of having to consider both the species and their hosts in any management (Arunachalam et al 2004;Kuijt 1969;Marvier and Smith 1997) and because knowledge of basic aspects such as habitat and host requirements are not well understood for many of the holoparasitic families (Atsatt 1983;Bolin et al 2009;Musselman and Press 1995;Pennings and Callaway 2002) apart from agricultural crop-damaging taxa (Mescher et al 2009;Press and Graves 1995;Weber and Forstreuter 1987). While some generalisations will be justified, a focus on control and eradication of common weed species does usually not provide sufficient understanding of the life cycle and requirements of rare and threatened taxa (Atsatt 1983).…”

mentioning

confidence: 99%

“…This seems due to the complication of having to consider both the species and their hosts in any management (Arunachalam et al 2004;Kuijt 1969;Marvier and Smith 1997) and because knowledge of basic aspects such as habitat and host requirements are not well understood for many of the holoparasitic families (Atsatt 1983;Bolin et al 2009;Musselman and Press 1995;Pennings and Callaway 2002) apart from agricultural crop-damaging taxa (Mescher et al 2009;Press and Graves 1995;Weber and Forstreuter 1987). While some generalisations will be justified, a focus on control and eradication of common weed species does usually not provide sufficient understanding of the life cycle and requirements of rare and threatened taxa (Atsatt 1983). As a consequence, conservation of holoparasitic plants has focussed largely on the protection of existing populations and their host communities (Arunachalam et al 2004;Marvier and Smith 1997;Olanya and Eilu 2009), rather than on re-establishing a species over its former range or into protected habitat.…”

mentioning

confidence: 99%

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Successful translocation of the threatened New Zealand root-holoparasite Dactylanthus taylorii (Mystropetalaceae)

Holzapfel¹,

Dodgson²,

Rohan

2015

Plant Ecol

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The conservation and translocation of threatened holoparasitic flowering plants provide added challenges due to their complete host dependency and often large knowledge gaps of their autecology. Here, we present the first successful, quantified field trial to establish from seed populations of dactylanthus (Dactylanthus taylorii, Mystropetalaceae), a threatened New Zealand endemic rootholoparasitic angiosperm. Establishment was monitored at four sites at Waipapa, Pureora Forest Park. The impact of two different sowing methods (broad-and central-sown), canopy state (as a proxy for soil moisture levels) and three dominant host species were tested. Establishment of dactylanthus was confirmed in 22 out of 24 plots 10 years after sowing, with earliest emergence after 4 years. Average and maximum inflorescence numbers per plot were similar to those of protected wild populations. The only opencanopy site performed worse in comparison with a closed-canopy site sharing the same dominant host species; differences in root availability and survival of the desiccation-sensitive seeds were regarded as the most likely explanations. Host species dominance had a significant impact on inflorescence numbers, indicating host preference in the species despite a wide host range. In contrast to longer-established wild populations, most of which are male-biased, female inflorescences strongly outnumbered males, considered as evidence of environmental sex determination and sex-switching of individuals. Findings from this study have increased our knowledge of the biology of dactylanthus, confirmed translocation as an effective tool in the conservation of the species and should be applicable for the protection of threatened parasitic plants species elsewhere in the world.

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Section: Dominant Hostsupporting

confidence: 93%

Section: Sowing Methodsmentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

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Successful translocation of the threatened New Zealand root-holoparasite Dactylanthus taylorii (Mystropetalaceae)

Holzapfel¹,

Dodgson²,

Rohan

2015

Plant Ecol

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“…Les Loranthaceae appartiennent au groupe des Angiospermes parasites qui ne représentent que 2% de l'ensemble des plantes à graines (Raynal-Roques & Paré, 1998). Les plantes parasites regroupent plus de 3000 espèces réparties dans 18 familles (Atsatt, 1983). Elles occupent une place importante dans plusieurs groupements végétaux.…”

unclassified

Parasitisme de <i>Dacryodes edulis</i> par le genre <i>Tapinanthus (Loranthaceae</i>) et répartition de la myrmécofaune associée à Logbessou Plateau (Douala, Cameroun)

Massako¹,

Tchatat²,

Mony³

et al. 2013

J. App. Bioscience.

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Closely related parasitic plants have similar host requirements and related effects on hosts

Matthies

2021

Ecology and Evolution

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The performance of root hemiparasites depends strongly on host species identity, but it remains unknown whether there exist general patterns in the quality of species as hosts for hemiparasites and in their sensitivity to parasitism. In a comparative approach, the model root hemiparasites Rhinanthus minor and R. alectorolophus were grown with 25 host species (grasses, forbs, and legumes) at two nutrient levels. Hosts grown without parasites served as a control. Host species identity strongly influenced parasite biomass and other traits, and both parasites grew better with legumes and grasses than with forbs. The biomass of R. alectorolophus was much higher than that of R. minor with all host plants and R. alectorolophus responded much more strongly to higher nutrient availability than R. minor. The performance of the two species of Rhinanthus with individual hosts was strongly correlated, and it was also correlated with that of R. alectorolophus and the related Odontites vulgaris in previous experiments with many of the same hosts, but only weakly with that of the less closely related Melampyrum arvense. The negative effect of R. minor on host biomass was less strong than that of R. alectorolophus, but stronger relative to its own biomass, suggesting that it is more parasitic. The impact of the two parasites on individual hosts did not depend on nutrient level and was correlated. Several legumes and grasses were tolerant of parasitism. While R. minor slightly reduced mean overall productivity, R. alectorolophus increased it with several species, indicating that the loss of host biomass was more than compensated by that of the parasite. The results show that closely related parasites have similar host requirements and correlated negative effects on individual hosts, but that there are also specific interactions between pairs of parasitic plants and their hosts.

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Host-Parasite Interactions in Higher Plants

Cited by 47 publications

References 48 publications

Successful translocation of the threatened New Zealand root-holoparasite Dactylanthus taylorii (Mystropetalaceae)

Successful translocation of the threatened New Zealand root-holoparasite Dactylanthus taylorii (Mystropetalaceae)

Parasitisme de <i>Dacryodes edulis</i> par le genre <i>Tapinanthus (Loranthaceae</i>) et répartition de la myrmécofaune associée à Logbessou Plateau (Douala, Cameroun)

Closely related parasitic plants have similar host requirements and related effects on hosts

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