Meiotic studies in four species of the genus Cuscuta, subgenus Grammica (Cuscutaceae)
Keywords:
Cuscuta, Grammica, Cuscutaceae, meiosis, monocentric chromosomes, polyploidy, holoparasitesAbstract
Páez, V. de los A.; Andrada, A. R.; Lozzia, M. E.; Toranzo, M. I. 2011. “Meiotic studies in four species of the genus Cuscuta, subgenus Grammica (Cuscutaceae)”. Lilloa 48 (1). The genus Cuscuta comprises holoparasites plants; the following four species of Northwest Argentina C. globiflora, C. parodiana, C. cristata and C. grandiflora, which belong to the subgenus Grammica, were cytologically studied. Their chromosomes are monocentric and meiotic studies have shown regular behavior with few abnormalities. Three species are diploid one is tetraploid, their chromosome numbers vary among from n = 14, 15 and 28 chromosomes; pollen viability was determined.
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References
Fernández, A. 1973. El acido láctico como fijador cromosómico. Boletín de la Sociedad Argentina de Botánica. 15 (2-3): 287-290.
Fogelberg, S. O. 1938. The cytology of Cuscuta. Bulletin of the Torrey Club 65: 631-645.
García, M. A. 2001. A new Western Mediterranean species of Cuscuta (Convolvulaceae) confirms the presence of holocentric chromosomes in subgenus Cuscuta. Botanical Journal of the Linnean Society 135: 169-178.
García, M. A. & S. Castroviejo. 2003.Estudios citotaxonómicos en las especies ibéricas del género Cuscuta (Convolvulaceae). Anales del Jardín Botánico de Madrid, 60 (1): 33-44.
Hunziker, A. T. 1947. Sinopsis de las especies argentino - uruguayas del género Cuscuta. Revista Argentina de Agronomía. 14 (2): 123-147.
Kaul, M. L. H. & A. K. Bhan. 1977. Cytogenetics of polyploids VI. Cytology of tetraploid and hexaploid Cuscuta reflexa Roxb. Cytologia 42: 125-136.
Lewis, W. H. 1980. Polyploidy in Angiosperms: Dicotyledons : 241-268 . In Lewis , W. H . (Ed . ). 1980. Polyploidy, Biological relevance. Plunum Press, New York and London 583 pp.
Lozzia, M. E.; A. R. Andrada; V. de los A. Páez; M. I. Toranzo & M. E. Cristóbal. 2009. Cromosomas holocéntricos en Cuscuta parodiana Yuncker (Subgénero Grammica). Lilloa 45:87-88 suplemento, XXXVIII Congreso Argentino de Genética.
Luceño, M.; A. L. L. Vanzela & M. Guerra. 1998. Cytotaxonomic studies in Brazilian Rhynchospora (Cyperaceae), a genus exhibiting holocentric chromosomes. Canadian Journal of Botany 76: 440-449.
McNeal, J. R.; K. Arumugunathan; J. V. Kuehl; J. L. Boore & C. W. de Pamphilis. 2007. Systematics and plastid genome evolution of the cryptically photosynthetic parasitic plant genus Cuscuta (Convolvulaceae). BMC Biology 5: 55.
Nickrent, D. L. 2002. Orígenes filogenéticos de las plantas parásitas. In J. A. López-Sáez, P. Catalán, and L. Sáez (eds.), Plantas parásitas de la península Ibérica e Islas Baleares, 29-56. MundiPrensa Libros, Madrid, Spain.
Pazy, B. 1997. Supernumerary chromosomes and their behaviour in meiosis of the holocentric Cuscuta babylonica Choisy. Botanical Journal of the Linnean Society 123: 173-176.
Pazy, B. & U. Plitmann. 1991. Unusual chromosome separation in meiosis of Cuscuta L. Genome 34: 533-536.
Pazy, B. & U. Plitmann. 1994. Holocentric chromosome behaviour in Cuscuta (Cuscutaceae). Plant Systematic Evolution191: 105-109.
Pazy, B. & U. Plitmann. 1995. Chromosome divergence in the genus Cuscuta and its systematic implications. Caryologia 48 (2): 173-180.
Pazy, B. & U. Plitmann. 2002. New perspectives on the mechanisms of chromosome evolution in parasitic flowering plants. Botanical Journal of the Linnean Society, 138: 117-122.
Ross, R. 1981. Chromosome counts, cytology, and reproduction in the Cactaceae. American Journal of Botany 68 (4): 463-470.
Sheidai, M.; S. Attaei & M. Khrosravi-Reineh. 2006. Cytology of some Iranian Stipa (Poaceae) species and Populations. Acta Botanica Croatica 65 (1): 1-11.
Stefanovic, S.; M. Kuzmina & M. Costea. 2007. Delimitation of major lineages within Cuscuta subgenus Grammica (Convolvulaceae) using plastid and nuclear DNA sequences. American Journal of Botany 94 (4): 568-589.
Welsh M., S. Stefanovic & M. Costea. 2010. Pollen evolution and its taxonomic significance in Cuscuta (dodders, Convolvulaceae). Plant Systematic Evolution 285: 83-101.
Yuncker, T. G. 1932. The genus Cuscuta. Memoirs of the Torrey Botanical Club.18 (2): 113-323.
Zuloaga, F. & O. Morrone (eds) 1999. Cuscutaceae. En Catálogo de las plantas vasculares de la República Argentina II. Missouri Botanical Garden Press.
