ISSN : 2287-8327
Ailanthus altissima, which is recognized as an invasive tree in the Western world, has been widely observed in Japan. To investigate how A. altissima expanded within-population and to new populations within a region, 446 A. altissima trees were sampled from three separate sites (A, B, and C) including 35 distantly positioned patches, with three chloroplast DNA markers and nine nuclear microsatellite markers. We detected 2, 2, and 3 chloroplast haplotypes in sites A, B, and C, respectively. In addition, 271, 40, and 41 nuclear genotypes were detected in sites A, B, and C, respectively. The clonal richness value was 0.85, 0.78, and 0.53 in sites A, B, and C, respectively. Most trees with the same genotypes were distrib¬uted in the same patch, indicating that range expansion by asexual reproduction was limited to a maximum of 45 meters. According to autocorrelation analysis, the extent of nonrandom spatial genetic structure was approximately 0-2 km in sites A and C. KINGROUP analyses showed that 812, 74, and 111 nuclear genotype pairs were detected to have kinship in sites A, B, and C, respectively. Most nuclear genotype pairs were detected within the same patches or sites. These results indicate that the number of A. altissima trees gradually increased from seeds, some of which were produced by trees within sites, meaning that this species could regenerate naturally. This shows the need for the future management of A. altissima as an invasive species in Japan.
Aldrich PR, Briguglio JS, Kapadia SN, Morker MU, Rawal A, Kalra P, Huebner CD, Greer GK. 2010. Genetic structure of the invasive tree Ailanthus altissima in eastern United States cities. J Bot. DOI 10.1155/2010/795735.
Bory G, Clair-Maczulajtys D. 1980. Production, dissemination et polyphormisme des semences d’Ailanthus altissima (Mill.) Swingle, Simaroubacees [Production, dissemination and polymorphism of seeds in Ailanthus altissima]. Rev Gen Bot 88: 297-311.
Bossdorf O, Auge H, Lafuma L, Rogers WE, Siemann E, PratiD. 2005. Phenotypic and genetic differentiation between native and introduced plant populations. Oeco-logia 144: 1-11.
Cho CW, Lee KJ. 2003. Seed dispersion and seedling spatial distribution of the tree of heaven in urban environments. Kor J Environ Ecol 16: 87-93.
Dallas JF, Leitch MJB, Hulme PE. 2005. Microsatellites for tree of heaven (Ailanthus altissima). Mol Ecol Notes 5: 340-342.
Dorken ME, Eckert CG. 2001. Severely reduced sexual reproduction in northern populations of a clonal plant, Decodonverticillatus (Lythraceae). J Ecol 89: 339-350.
Dunphy BK, Hamrick JL. 2005. Gene flow among established Puerto Rican populations of the exotic tree species, Albizia lebbeck. Heredity 94: 418-425.
El Mousadik A, Petit RJ. 1996. High level of genetic differentiation for allelic richness among populations of the argan tree [Argania spinosa (L.) Skeels] endemic to Morocco. Theor Appl Genet 92: 832-839.
Goudet J. 2001. FSTAT, a program to estimate and test gene diversities and fixation indices (version 2.9.3). http://www.unil.ch/izea/softwares/fstat.html. Accessed 23 September 2008.
Gyokusen K, Iijima Y, Yahata H. 1991. Spatial distribution and morphological features of root sprouts in niseakasia (Robinia pseudo-acacia L.) growing under a coastal black pine [Pinus thunbergii] forest. Bull Kyusyu Univ For 54: 13-28.
Hardy OJ, Vekemans X. 2002. SPAGeDi: a versatile computer program to analyse spatial genetic structure at the individual or population levels. Mol Ecol Notes 2: 618-620.
Jung SC, Matsushita N, Wu BY, Kondo N, Shiraishi A, Hogetsu T. 2009. Reproduction of a Robinia pseudoacacia population in a coastal Pinus thunbergii windbreak along the Kujukurihama Coast, Japan. J For Res 14: 101-110.
Kolar CS, Lodge DM. 2001. Progress in invasion biology: predicting invaders. Trends Ecol Evol 16: 199-204.
Konovalov DA, Manning C, Henshaw MT. 2004. KINGROUP: a program for pedigree relationship reconstruction and kin group assignments using genetic markers. Mol Ecol Notes 4: 779-782.
Kowarik I. 1995. Clonal growth in Ailanthus altissima on a natural site in West Virginia. J Veg Sci 6: 853-856.
Kowarik I, Säumel I. 2007. Biological flora of Central Europe: Ailanthus altissima (Mill.) Swingle. Perspect Plant Ecol Evol Syst 8: 207-237.
Kowarik I, Säumel I. 2008. Water dispersal as an additional pathway to invasions by the primarily wind-dispersed tree Ailanthus altissima. Plant Ecol 198: 241-252.
Kurokochi H, Hogetsu T. 2014. Fine-scale initiation of nonnative Robinia pseudoacacia riparian forests along the Chikumagawa River in central Japan. J Ecol Environ 37: 21-29.
Kurokochi H, Saito Y, Chuman M, Ide Y. 2012. Genetic variation of planted or naturalized Ailanthus altissima populations in Japan. Japanese For Soc Cong 123: A03.
Kurokochi H, Saito Y, Chuman M, Ide Y. 2013. Low chloroplast diversity despite of phylogenetically divergent haplotypes in Japanese populations of Ailanthus altissima (Simaroubaceae). Botany 91: 148-154.
Kurokochi H, Saito Y, Ide Y. in press. Genetic structure of the introduced Heaven Tree (Ailanthus altissima) in Japan: Evidence for two distinct origins with limited admixture. Botany. DOI 10.1139/cjb-2014-0181.
Kurokochi H, Toyama K, Hogetsu T. 2010. Regeneration of Robinia pseudoacacia riparian forests after clear-cutting along the Chikumagawa River in Japan. Plant Ecol 210: 31-41.
Landenberger RE, Kota NL, McGraw JB. 2007. Seed dispersal of the non-native invasive tree Ailanthus altissima into contrasting environments. Plant Ecol 192: 55-70.
Le Roux JJ, Brown GK, Byrne M, Ndlovu, J, Richardson DM, Thompson, GD, Wilson JRU. 2011. Phylogeographic consequences of different introduction histories of invasive Australian Acacia species and Paraserianthes lophantha (Fabaceae) in South Africa. Divers Distrib 17: 861-871.
Liao YY, Guo YH, Chen JM, Wang QF. 2014. Phylogeography of the widespread plant Ailanthus altissima (Simaroubaceae) in China indicated by three chloroplast DNA regions. J System Evol 52: 175-185.
Little S. 1974. Ailanthus altissima (Mill.) Swingle--Ailanthus. In: Seeds of Woody Plants in the United States (Schopmeyer CS, ed). US Department of Agriculture, Forest Service, Washington, DC, pp 201-202.
Marshall TC, Slate J, Kruuk LEB, Pemberton JM. 1998. Statistical confidence for likelihood-based paternity inference in natural populations. Mol Ecol 7: 639-655.
Nei M. 1987. Molecular Evolutionary Genetics. Columbia University Press, New York, NY.
Ogawa M, Hukusima T. 1996. Root sprout and seedling dynamics of Prunus ssiori in an Abies mariesii forest in Oku-Nikko, Kanto District. J Jpn For Soc 78: 195-200.
Pairon M, Petitpierre B, Campbell M, Guisan A, Broennimann O, Baret PV, Jacquemart, AL, Besnard G. 2010. Multiple introductions boosted genetic diversity in the invasive range of black cherry (Prunus serotina; Rosaceae). Ann Bot 105: 881-890.
Parker IM, Simberloff D, Lonsdale WM, Goodell K, Wonham M, Kareiva PM, Williamson MH, Von Holle B, Moyle PB, Byers JE, Goldwasser L. 1999. Impact: towards a framework for understanding the ecological effects of invad-ers. Biol Invas 1: 3-19.
Pimentel D. 2002. Biological Invasions: Economic and Environmental Costs of Alien Plant, Animal, and Microbe Species. CRC Press, Boca Ranton, FL.
Rosenthal DM, Ramakrishnan AP, Cruzan MB. 2008. Evidence for multiple sources of invasion and intraspecific hybridization in Brachypodium sylvaticum (Hudson) Beauv. in North America. Mol Ecol 17: 4657-4669.
Schneider S, Roessli D, Excoffier L. 2000. Arlequin ver. 2.000: a software for population genetics data analysis [user’s manual]. University of Geneva, Genetics and Biometry Laboratory, Geneva, Switzerland http://lgb.unige.ch/arlequin/software/2.000/manual/Arlequin.pdf. Accessed 13 December 2010.
Shimizu T. 2003. Naturalized plants in Japan. Heibon-sha, Tokyo. (in Japanese)
Uehara K. 1959. Illustrations of Trees. Ariake Shobou, Tokyo, Japan. (in Japanese)
Vitousek PM. 1990. Biological invasions and ecosystem processes: towards an integration of population biology and ecosystem studies. Oikos 57: 7-13.