期刊
GENETICS AND MOLECULAR RESEARCH
卷 12, 期 3, 页码 2400-2408出版社
FUNPEC-EDITORA
DOI: 10.4238/2013.July.15.3
关键词
Chromosome; Evolution; 45S rDNA; AgNOR-banding; Anura
资金
- Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior (CAPES)
- Fundacao de Amparo a Pesquisa do Estado da Bahia (FAPESB)
- Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq)
Chromosome numbers, morphology, and nucleolus organizer region (NOR) locations are useful cytological characters for taxonomic and evolutionary studies. In this study, we provide the first cytogenetic analysis of Phyllomedusa bahiana and Phasmahyla spectabilis, and report new cytogenetic data on variation in NOR numbers and positions in Phyllomedusa rohdei and Phyllomedusa nordestina using conventional staining, AgNOR-banding, and 45S rDNA fluorescence in situ hybridization. All 4 species showed 2n = 26 chromosomes. P. spectabilis and P. bahiana had only 1 pair of NOR-carrying chromosomes. P. bahiana showed an NOR length polymorphism, and a rare homomorphic self-compatibility for both NOR lengths in anurans. Variation in the number of NOR-bearing chromosomes was found between the sampled populations of P. nordestina, ranging from 3 to 4. This study also clarified previous conflicting results concerning the occurrence of inter- and intrapopulation NOR variation in P. rohdei. The variation, confirmed by 45S rDNA fluorescence in situ hybridization analysis, was congruent with results obtained from AgNOR-banding in all species.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据