TY - JOUR
T1 - Chromosome reduction in Eleocharis maculosa (Cyperaceae)
AU - Maximiano Da Silva, C. R.
AU - González-Elizondo, M. S.
AU - Laforga Vanzela, A. L.
PY - 2008/12
Y1 - 2008/12
N2 - Chromosome numbers in Cyperaceae lower than the typical basic number x = 5 have been described for only three species: Rhynchospora tenuis (n = 2), Fimbristylis umbellaris (n = 3) and Eleocharis subarticulata (n = 3). Eleocharis maculosa is recorded here as the fourth species of Cyperaceae that has a chromosome number lower than 2n = 10, with 2n = 8, 7 and 6. The karyotype differentiation in E. maculosa was studied using conventional staining (mitosis and meiosis), FISH with 45S and 5S rDNA and telomere probes. The results allow us to determine which chromosomes of the chromosome race with 2n = 10 fused to form the remaining reduced numbers, as well as to understand how the symploidy and translocation mechanisms were important in karyotype differentiation and the formation of chromosome races in Eleocharis.
AB - Chromosome numbers in Cyperaceae lower than the typical basic number x = 5 have been described for only three species: Rhynchospora tenuis (n = 2), Fimbristylis umbellaris (n = 3) and Eleocharis subarticulata (n = 3). Eleocharis maculosa is recorded here as the fourth species of Cyperaceae that has a chromosome number lower than 2n = 10, with 2n = 8, 7 and 6. The karyotype differentiation in E. maculosa was studied using conventional staining (mitosis and meiosis), FISH with 45S and 5S rDNA and telomere probes. The results allow us to determine which chromosomes of the chromosome race with 2n = 10 fused to form the remaining reduced numbers, as well as to understand how the symploidy and translocation mechanisms were important in karyotype differentiation and the formation of chromosome races in Eleocharis.
UR - http://www.scopus.com/inward/record.url?scp=58149088348&partnerID=8YFLogxK
U2 - 10.1159/000163096
DO - 10.1159/000163096
M3 - Artículo
SN - 1424-8581
VL - 122
SP - 175
EP - 180
JO - Cytogenetic and Genome Research
JF - Cytogenetic and Genome Research
IS - 2
ER -