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Reciprocal transplant experiment suggests host specificity of the mistletoe Agelanthus natalitius in South Africa

Published online by Cambridge University Press:  13 December 2013

Desale Y. Okubamichael ,
Megan E. Griffiths  and
David Ward
Desale Y. Okubamichael*
Affiliation:
School of Life Sciences, University of KwaZulu-Natal, Private Bag X01, Scottsville 3209, Pietermaritzburg, South Africa
Megan E. Griffiths
Affiliation:
School of Life Sciences, University of KwaZulu-Natal, Private Bag X01, Scottsville 3209, Pietermaritzburg, South Africa
David Ward
Affiliation:
School of Life Sciences, University of KwaZulu-Natal, Private Bag X01, Scottsville 3209, Pietermaritzburg, South Africa
*
1Corresponding author. Email: [email protected]
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Abstract:

We surveyed the community composition of trees that host the mistletoe Agelanthus natalitius (Loranthaceae) at two sites (Highover and Mtontwane) in South Africa. We recorded a total of 1464 trees (Acacia karroo and A. caffra) hosting 1202 mistletoes in the 64 surveyed plots (20 × 50 m). There were almost four times as many A. karroo as A. caffra at Highover and three times as many A. karroo as A. caffra at Mtontwane. There was no significant difference in prevalence (percentage of infected trees) at Highover (A. karroo = 22% and A. caffra = 26%), but a significantly greater percentage of A. caffra trees were parasitized at Mtontwane (A. karroo = 25% and A. caffra = 34%). Intensity of infection (number of mistletoe infections per tree) was higher for A. karroo (0.73 ± 0.04 and 1.03 ± 0.64) than for A. caffra (0.66 ± 0.01 and 0.89 ± 0.035) at Highover and Mtontwane, respectively. Prevalence and intensity of infection showed a significant positive relationship with tree size for both host species at both sites. We tested the genotype-by-environment interaction effects in this mistletoe by conducting reciprocal transplant experiments (64 individual trees each received 20 seeds). Initial germination was not site-, substrate- or host-sensitive. However, a general pattern was found that hypocotyls of the germinated seeds grew longer when seeds were placed on the same host species as the parent plant within their own source locality. Consistent with this observation, mistletoes placed on their source host species generally had higher survival than those transferred to non-source host species after 6 mo. Overall, mistletoe seeds from parent plants on A. karroo and mistletoe seeds placed on A. karroo had the highest survival. This could be the result of an adaptation of the mistletoe to the most frequently encountered host species.

Keywords

Adaptive phenotypic plasticityAcacia caffraAcacia karrooAgelanthus natalitiuscoevolutionG × E interactionsprevalenceintensityhost specificityreaction norms
Type
Research Article
Information
Journal of Tropical Ecology , Volume 30 , Issue 2 , March 2014 , pp. 153 - 163
Copyright
Copyright © Cambridge University Press 2013 

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References

LITERATURE CITED

ARRUDA, R., CARVALHO, L. N. & DEL-CLARO, K. 2006. Host specificity of a Brazilian mistletoe, Struthanthus aff. polyanthus (Loranthaceae), in cerrado tropical savanna. Flora 201:127–134.CrossRefGoogle Scholar
AUKEMA, J. E. 2004. Distribution and dispersal of desert mistletoe is scale-dependent, hierarchically nested. Ecography 27:137–144.CrossRefGoogle Scholar
AUKEMA, J. E. & MARTÍNEZ DEL RIO, C. 2002. Variation in mistletoe seed deposition: effects of intra- and interspecific host characteristics. Ecography 25:139–144.CrossRefGoogle Scholar
BOUWMEESTER, H. J., MATUSOVA, R., ZHONGKUI, S. & BEALE, M. H. 2003. Secondary metabolite signalling in host–parasitic plant interactions. Current Opinion in Plant Biology 6:358–364.CrossRefGoogle ScholarPubMed
CALVIN, C. L. & WILSON, C. A. 2006. Comparative morphology of epicortical roots in Old and New World Loranthaceae with reference to root types, origin, patterns of longitudinal extension and potential for clonal growth. Flora 201:51–64.CrossRefGoogle Scholar
CHANG, M. & LYNN, D. G. 1986. The haustorium and the chemistry of host recognition in parasitic angiosperms. Journal of Chemical Ecology 12:561–579.CrossRefGoogle ScholarPubMed
CLAY, K., DEMENT, D. & REJMANEK, M. 1985. Experimental evidence for host races in mistletoe (Phoradendron tomentosum). American Journal of Botany 72:1225–1231.CrossRefGoogle Scholar
DEAN, W. R. J., MIDGLEY, J. J. & STOCK, W. D. 1994. The distribution of mistletoes in South Africa: patterns of species richness and host choice. Journal of Biogeography 21:503–510.CrossRefGoogle Scholar
DONOHUE, K. 1995. The spatial demography of mistletoe parasitism on a Yemeni acacia. International Journal of Plant Sciences 156:816–823.CrossRefGoogle Scholar
FADINI, R. F. 2011. Non-overlap of hosts used by three congeneric and sympatric loranthaceous mistletoe species in an Amazonian savanna: host generation to extreme specialization. Acta Botanica Brasilica 25:337–345.CrossRefGoogle Scholar
GLAZNER, J. T., DEVLIN, B. & ELLSTRAND, N. C. 1988. Biochemical and morphological evidence for host race evolution in desert mistletoe, Phoradendron californicum (Viscaceae). Plant Systematics and Evolution 161:13–21.CrossRefGoogle Scholar
GREEN, A. K., WARD, D. & GRIFFITHS, M. E. 2009. Directed dispersal of mistletoe (Plicosepalus acaciae) by Yellow-vented Bulbuls (Pycnonotus xanthopygos). Journal of Ornithology 150:167–173.CrossRefGoogle Scholar
JAPHET, W., ZHOU, D. & ZHANG, H. 2009. Evidence of phenotypic plasticity in the response of Fagopyrum esculentum to population density and sowing date. Journal of Plant Biology 52:303–311.CrossRefGoogle Scholar
KAPLAN, E. L. & MEIER, P. 1958. Nonparametric estimation from incomplete observations. Journal of the American Statistical Association 53:457–481.CrossRefGoogle Scholar
KREBS, C. J. 1989. Ecological methodology. Harper and Row, New York. 654 pp.Google Scholar
LADLEY, J. J. & KELLY, D. 1996. Dispersal, germination and survival of New Zealand mistletoes (Loranthaceae): dependence on birds. New Zealand Journal of Ecology 20:69–79.Google Scholar
LAMONT, B. 1982. Host range and germination requirements of some South African mistletoes. South African Journal of Science 78:41–42.Google Scholar
LAMONT, B. 1983. Germination of mistletoes. Pp. 129–143 in Calder, M. & Bernhardt, P. (eds.). The biology of mistletoes. Academic Press, Sydney.Google Scholar
LÓPEZ DE BUEN, L. & ORNELAS, J. 2002. Host compatibility of the cloud forest mistletoe Psittacanthus schiedeanus (Loranthaceae) in central Veracruz, Mexico. American Journal of Botany 89:95–102.CrossRefGoogle Scholar
LYNCH, M. & WALSH, B. 1998. Genetics and analysis of quantitative traits. Sinauer Associates, Sunderland. 980 pp.Google Scholar
MARTÍNEZ DEL RIO, C., SILVA, A., MEDEL, R. & HOURDEQUIN, M. 1996. Seed dispersers as disease vectors: bird transmission of mistletoe seeds to plant hosts. Ecology 77:912–921.CrossRefGoogle Scholar
MATHIASEN, R. L., NICKRENT, D. L., SHOW, D. C. & WATSON, D. M. 2008. Mistletoes: pathology, systematics, ecology, and management. Plant Disease 92:988–1006.CrossRefGoogle ScholarPubMed
MATVIENKO, M., TORRES, M. J. & YODER, J. I. 2001. Transcriptional responses in the hemiparasitic plant Triphysaria versicolor to host plant signals. Plant Physiology 127:272–282.CrossRefGoogle ScholarPubMed
MIDGLEY, J. J. & JOUBERT, D. 1991. Mistletoes, their host plants and the effects of browsing by large mammals in Addo Elephant National Park. Koedoe 34:149–152.CrossRefGoogle Scholar
NORTON, D. A. & CARPENTER, M. A. 1998. Mistletoes as parasites: host specificity and speciation. Trends in Ecology and Evolution 13:101–105.CrossRefGoogle ScholarPubMed
NORTON, D. A. & DE LANGE, P. J. 1999. Host specificity in parasitic mistletoes (Loranthaceae) in New Zealand. Functional Ecology 13:552–559.CrossRefGoogle Scholar
OKUBAMICHAEL, D. Y., GRIFFITHS, M. E. & WARD, D. 2011a. Host specificity, nutrient and water dynamics of the mistletoe Viscum rotundifolium and its potential host species in the Kalahari of South Africa. Journal of Arid Environments 75:898–902.CrossRefGoogle Scholar
OKUBAMICHAEL, D. Y., RASHEED, M. Z., GRIFFITHS, M. E. & WARD, D. 2011a. Avian consumption and seed germination of the hemiparasitic mistletoe Agelanthus natalitius (Loranthaceae). Journal of Ornithology 152:643–649.CrossRefGoogle Scholar
OVERTON, J. M. 1994. Dispersal and infection in mistletoe metapopulations. Journal of Ecology 82:1–12.CrossRefGoogle Scholar
POLHILL, R. & WIENS, D. 1998. Mistletoes of Africa. Royal Botanic Gardens Kew, Richmond. 370 pp.Google Scholar
RÖDL, T. & WARD, D. 2002. Host recognition in a desert mistletoe: early stages of development are influenced by substrate and host origin. Functional Ecology 16:128–134.CrossRefGoogle Scholar
ROXBURGH, L. 2007. The effect of gut processing on the quality of mistletoe seed dispersal. Journal of Tropical Ecology 23:377–380.CrossRefGoogle Scholar
ROXBURGH, L. & NICOLSON, S. W. 2005. Patterns of host use in two African mistletoes: the importance of mistletoe–host compatibility and avian disperser behaviour. Functional Ecology 19:865–873.CrossRefGoogle Scholar
ROXBURGH, L. & NICOLSON, S. W. 2007. Differential dispersal and survival of an African mistletoe: does host size matter? Plant Ecology 195:21–31.CrossRefGoogle Scholar
RUNYON, J. B., MESCHER, M. C. & DE MORAES, C. M. 2006. Volatile chemical cues guide host location and host selection by parasitic plants. Science 313:1964–1967.CrossRefGoogle ScholarPubMed
SARGENT, S. 1995. Seed fate in tropical mistletoe: the importance of host twig size. Functional Ecology 9:197–204.CrossRefGoogle Scholar
STEWART, G. R. & PRESS, M. C. 1990. The physiology and biochemistry of parasitic angiosperms. Annual Review of Plant Physiology and Plant Molecular Biology 41:127–151.CrossRefGoogle Scholar
THOROGOOD, C. J. & HISCOCK, S. 2010. Specific developmental pathways underlie host specificity in the parasitic Orobanche. Plant Signalling and Behaviour 5:275–277.CrossRefGoogle ScholarPubMed
THOROGOOD, C. J., RUMSEY, F. J. & HISCOCK, S. J. 2009. Host-specific races in the holoparasitic angiosperm Orobanche minor: implications for speciation in parasitic plants. Annals of Botany 103:1005–1014.CrossRefGoogle ScholarPubMed
TOMILOV, A., TOMILOVA, N. & YODER, J. I. 2004. In vitro haustorium development in roots and root cultures of the hemiparasitic plant Triphysaria versicolor. Plant Cell, Tissue and Organ Culture 77:257–265.CrossRefGoogle Scholar
VAN WYK, B. & VAN WYK, P. 1997. Field guide to trees of southern Africa. Struik, Cape Town. 536 pp.Google Scholar
VISSER, J. 1981. South African parasitic flowering plants. Juta, Cape Town. 177 pp.Google Scholar
WARD, D., SHRESTHA, M. K. & MUSLI, I. 2006. Are invasive mistletoes killing Ziziphus spina-christi? Israel Journal of Plant Sciences 54:113–117.CrossRefGoogle Scholar
WARD, M. J. & PATON, D. C. 2007. Predicting mistletoe seed shadow and patterns of seed rain from movements of the mistletoebird, Dicaeum hirundinaceum. Australian Journal of Ecology 32:113–121.CrossRefGoogle Scholar
WIENS, D. & TÖLKEN, H. R. 1979. Viscaceae and Loranthaceae. Flora of Southern Africa 10:1–59.Google Scholar
YAN, Z. 1993 a. Germination and seedling development of two mistletoes, Amyema preissii and Lysiana exocarpi: host specificity and mistletoe–host compatibility. Australian Journal of Ecology 18:419–429.Google Scholar
YAN, Z. 1993 b. Resistance to haustorial development of two mistletoes, Amyema preissii (Miq.) Tieghem and Lysiana exocarpi (Behr.) Tieghem ssp. exocarpi (Loranthaceae), on host and non-host species. International Journal of Plant Sciences 154:386–394.CrossRefGoogle Scholar
YAN, Z. & REID, N. 1995. Mistletoe (Amyema miquelii and A. pendulum) seedling establishment on eucalypt hosts in eastern Australia. Journal of Applied Ecology 32:778–784.CrossRefGoogle Scholar
YODER, J. I. 1999. Parasitic plant responses to host plant signals: a model for subterranean plant–plant interactions. Current Opinion in Plant Biology 2:65–70.CrossRefGoogle Scholar
ZUBER, D. & WIDMER, A. 2000. Genetic evidence for host specificity in the hemi-parasitic Viscum album L. (Viscaceae). Molecular Ecology 9:1069–1073.CrossRefGoogle ScholarPubMed