Host specificity in parasitic plants—perspectives from
mistletoes

Okubamichael, Desale Y.; Griffiths, Megan; Ward, David

doi:10.1093/aobpla/plw069

Cited by 49 publications

(49 citation statements)

References 92 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Host families known from the fossil palyno-assemblage appear in bold. Loranthaceae systematics and distribution summarised from Polhill and Wiens (1998), data on host taxa compiled from Wiens and Tölken (1979), Visser (1981), Dean et al (1994), Wiens (1998, 1999), Dzerefos et al (2003), Roxburgh and Nicolson (2005), Veste (2007), Didier et al (2008), Ogunmefun et al (2013), Dlama et al (2016) and Okubamichael et al (2013Okubamichael et al ( , 2016 Roberts et al [2017] including supplements). For a full geological, stratigraphic, palaeontological and palaeoenvironmental background of this locality/core see Roberts et al (2017).…”

Section: S21mentioning

confidence: 99%

The first Loranthaceae fossils from Africa

Grímsson

Xafis

Neumann

et al. 2018

Grana

View full text Add to dashboard Cite

An ongoing re-investigation of the early Miocene Saldanha Bay (South Africa) palynoflora, using combined light and scanning electron microscopy (single grain method), is revealing several pollen types new to the African fossil record. One of the elements identified is Loranthaceae pollen. These grains represent the first and only fossil record of Loranthaceae in Africa. The fossil pollen grains resemble those produced by the core Lorantheae and are comparable to recent Asian as well as some African taxa/lineages. Molecular and fossil signals indicate that Loranthaceae dispersed into Africa via Asia sometime during the Eocene. The present host range of African Loranthaceae and the composition of the palynoflora suggest that the fossil had a range of potential host taxa to parasitise during the early Miocene in the Saldanha Bay region.

show abstract

Section: S21mentioning

confidence: 99%

The first Loranthaceae fossils from Africa

Grímsson

Xafis

Neumann

et al. 2018

Grana

View full text Add to dashboard Cite

show abstract

“…Host specificity is the restricted use of available potential host species at a local scale, while host preference refers to the hierarchical ranking of host use [1]. Several factors such as seed dispersal vectors, host availability, host abundance, host compatibility and suitable niche for the parasite determine host specificity in mistletoes [2]. Mistletoe are hemiparasitic plants which access water and nutrients from other living plants [3].…”

Section: Introductionmentioning

confidence: 99%

Host specificity and phytochemical constituents of mistletoe and twigs of parasitized plants: Implications for blanket application of mistletoe as cure-all medicine

Isikhuemen

Olisaemeka

Oyibotie

2020

JMHE

View full text Add to dashboard Cite

A study on host specificity and phytochemical constituents of leaves of mistletoe and parasitized twigs of seven host trees/shrubs was conducted in University of Benin, Benin City, Nigeria. Plant height and location were measured with Nikon Laser Rangefinder (Forestry 550) and GPS respectively while occurrence and count of mistletoe on host plants was largely anecdotal/visual. Phytochemical analyses were conducted at Faculty of Agriculture Science/Soil Laboratory, University of Benin, Benin City, Nigeria while data were subjected to One-way Analysis of Variance and means separated using Duncan Multiple Range Test (p=0.05). Results revealed mistletoe were largely generalists, and contained more phytochemicals than host plants. Tapinanthus ogowensis from Moringa oleifera was richest in alkaloid; Phragmanthera nigritana on Citrus sinensis, Tapinanthus ogowensis on Moringa oleifera and Phragmanthera capitata on Calliandra portoricensis recorded highest phenol content and differences among them were not significant (p<0.05). Phragmanthera capitata on Spondias mombin had significantly higher tannins than other mistletoe and host plants (p<0.05). P. capitata on S. mombin recorded best for saponin and flavonoid while P. capitata on Psidium guajava, Loranthus micranthus on Persia americana and P. capitata on C. portoricensis recorded more anthraquinone and were not significantly different from each other p<0.05. While the marked variation in phytochemicals in leaves of mistletoe and twigs of host plants is noteworthy; the study sufficiently established that ecological idiosyncrasies, time/season and varied environmental phenomena strongly influence incidence and/or buildup of secondary metabolites. The foregoing should serve as benchmark in selection and/or use of mistletoe for resolving infirmities.

show abstract

“…It has been proposed that temperate forest mistletoes are likely to be specific to one genus or a few host species (Norton & Carpenter ; Norton & De Lange ; Okubamichael et al . ). According to our results, this statement applies only to Misodendrum spp.…”

Section: Discussionmentioning

confidence: 97%

“…In South Africa, mistletoe species rarely share the same primary host in a local area, especially if the species are from different families (Okubamichael et al . ). The authors speculated that this could be an example of competitive exclusion, a process that contributes to a geographic mosaic of mistletoe–host interactions.…”

Section: Discussionmentioning

confidence: 97%

Macroscale analysis of mistletoe host ranges in the Andean‐Patagonian forest

2018

View full text Add to dashboard Cite

The number of host species infected by a mistletoe (host range) is critical in that it influences prevalence, virulence and overall distribution of the parasite; however, macroecological analyses of this life history feature are lacking for many regions. The Andean-Patagonian forest, found along the southern Andes from 35 °S to Tierra del Fuego at 55 °S, contains 12 mistletoe species in three families (Loranthaceae, Misodendraceae and Santalaceae). By tabulating herbarium records, the host ranges and geographical distributions of these mistletoes were explored. Our results show that these parasites occur on 43 plant species in 24 families but with varying degrees of specificity. All Misodendrum species and Desmaria mutabilis (Loranthaceae) are specialists that use Nothofagus as their primary hosts. Tristerix and Notanthera (Loranthaceae) and Antidaphne and Lepidoceras (Santalaceae) are generalists parasitizing more than six host species from several genera and families. Although many of the mistletoe species are sympatric, there is low overlap in host use. Our data show that in the southern South American bioregion, generalist mistletoes have smaller geographic ranges than specialists. This contrast with a previous hypothesis that predicted mistletoes with large geographic ranges would also have large host ranges, and conversely, less diverse regions would have more specialised mistletoes.

show abstract

Host specificity in parasitic plants—perspectives from mistletoes

Cited by 49 publications

References 92 publications

The first Loranthaceae fossils from Africa

The first Loranthaceae fossils from Africa

Host specificity and phytochemical constituents of mistletoe and twigs of parasitized plants: Implications for blanket application of mistletoe as cure-all medicine

Macroscale analysis of mistletoe host ranges in the Andean‐Patagonian forest

Contact Info

Product

Resources

About