Sessea Carvalho et Schnoor - nova seção para o gênero Cestrum (Solanaceae)

Carvalho, Lucia d'Avila Freire de; Schnoor, Adriana

doi:10.1590/2175-7860199319974549717502

Cited by 5 publications

(5 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“… Xu and Earle (1996) showed that in Lycopersicum (Solanaceae) the 5S rDNA was associated with heterochromatic bands, and Cerbah et al (1998) and Ruas et al (2005) reported this association in several species of Hypochoeris L. (Asteraceae). The occurrence of paracentromeric 5S rDNA on the long arm of pair 8 is considered conserved in Cestrum , but the discovery in C. capsulare , which had been earlier ascribed to the genus Sessea ( S. regnellii ), can indicate two possibilities: (i) with the increase in the number of species studied, this location cannot be considered a good chromosome marker for the genus; or (ii) our results may be in contradiction to the junction of the genera Cestrum and Sessea , which was based on the diagnosis of fruit morphology, as proposed by Carvalho and Schnoor (1997) . However, when we consider the general cytogenetic features of C. capsulare , including large chromosomes, a great number of heterochromatic blocks, equilocal distribution and number and location of 45S rDNA, C. capsulare seems to be well bounded.…”

Section: Discussionmentioning

confidence: 56%

“…This difference is sustained by taxonomic data, since C. capsulare was once classified into the genus Sessea ( Sessea regnellii Taub.) and was later reclassified to Cestrum ( Carvalho and Schnoor, 1997 ). However, chromosome banding (described below) showed that C. capsulare accumulated more repetitive DNA than the other three species, which could produce an increase in karyotype differences, including asymmetry.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Karyotype differentiation of four Cestrum species (Solanaceae) revealed by fluorescent chromosome banding and FISH

et al. 2009

View full text Add to dashboard Cite

The karyotypes of four South American species of Cestrum (C. capsulare, C. corymbosum, C. laevigatum and C. megalophylum) were studied using conventional staining, C-CMA/DAPI chromosome banding and FISH with 45S and 5S rDNA probes. The karyotypes showed a chromosome number of 2n = 2x = 16, with metacentric chromosomes, except for the eighth submeta-to acrocentric pair. Several types of heterochromatin were detected, which varied in size, number, distribution and base composition. The C-CMA + bands and 45S rDNA were located predominantly in terminal regions. The C-CMA + /DAPI + bands appeared in interstitial and terminal regions, and the C-DAPI + bands were found in all chromosome regions. The 5S rDNA sites were observed on the long arm of pair 8 in all species except C. capsulare, where they were found in the paracentromeric region of the long arm of pair 4. The differences in band patterns among the species studied here, along with data from other nine species reported in the literature, suggest that the bands are dispersed in an equilocal and non-equilocal manner and that structural rearrangements can be responsible for internal karyotype diversification. However, it is important to point out that the structural changes involving repetitive segments did not culminate in substantial changes in the general karyotype structure concerning chromosome size and morphology.

show abstract

Section: Discussionmentioning

confidence: 56%

Section: Discussionmentioning

confidence: 99%

Karyotype differentiation of four Cestrum species (Solanaceae) revealed by fluorescent chromosome banding and FISH

et al. 2009

View full text Add to dashboard Cite

show abstract

“…18 species (Benítez 2001), out of which one (S. brasiliensis Toledo) is endemic to southeastern Brazil, and one (S. regnelli Taubert) occurs only in southern and southeastern Brazil. Although there is a relatively recent proposal (Carvalho & Schnoor 1993/1997 of reducing the genus Sessea to a section within the genus Cestrum at least for those two Brazilian species cited above, for which two new names (Cestrum toledii Carvalho & Schnoor and Cestrum capsulare Carvalho & Schnoor, respectively) have also been proposed (because of new homonymies), we opted to keep the species brasiliensis in the genus Sessea until more discussion on the subject is available in the literature. Pipkin et al (1966) studied different types of substrata used for breeding by drosophilids in Panama.…”

Section: Methodsmentioning

confidence: 99%

Breeding sites of Neotropical Drosophilidae (Diptera): IV. living and fallen flowers of Sessea brasiliensis and Cestrum spp. (Solanaceae)

Santos

Vilela

2005

Rev. Bras. entomol.

View full text Add to dashboard Cite

ABSTRACT. Breeding sites of Neotropical Drosophilidae (Diptera). IV. Living and fallen flowers of Sessea brasiliensis and Cestrum spp. (Solanaceae). The flowering phenologies of Sessea brasiliensis and three species of Cestrum (C. amictum, C. schlechtendalii and C. sendtnerianum), all belonging to the Solanaceae, were monitored in a fragment of the montane Atlantic rain forest within São Paulo city from July 1993 through June 1995. A total of 11,021 flies belonging to five species of the flavopilosa group of Drosophila (D. cestri, D. cordeiroi, D. hollisae, D. incompta and D. mariaehelenae), plus 1,244 flies belonging to four species of Zygothrica (Z. dispar, Z. vittimaculosa, Z. vittinubila and Z. aff. vittipunctata) emerged from 33,955 sampled flowers. Cestrum amictum, C. sendtnerianum and Sessea brasiliensis are recorded for the first time as host plants for the species of the Neotropical flavopilosa group of Drosophila. Additionally, at least ten less abundant taxa belonging also to the Drosophilidae, plus 1,073 microhymenopteran parasitoids (Braconidae, Eucoilidae, and Pteromalidae), emerged from the sampled flowers of S. brasiliensis e Cestrum spp. The present study raised from nine to eleven the number of species of Cestrum previously recorded as breeding sites for these flies. A comprehensive list of species of Solanaceae known to host six species of Drosophila and four species of Zygothrica in southeastern and southern Brazil is included. Many species of holometabolic insects use ephemeral resources (e.g. fungi, flowers, fruits, etc.) as sites for adult feeding and courting, and larval development. There is, however, variation in the degree of specificity in relation to their host plants. This variation might be related to diverse factors, such as predictability and availability of plant resources in time and space, the diversity of plant species within a community, and the spatial relationships and associations among individual plants (Cates 1980(Cates , 1981Vasconcellos-Neto 1991).Some species of insect that use ephemeral resources, however, have become highly specialized. Those using one or a few species of plants belonging to the same family are considered monophagous, whereas those breeding from a wide Breeding sites of Neotropical Drosophilidae (Diptera). IV. Living and fallen flowers of Sessea brasiliensis and Cestrum spp. (Solanaceae)

show abstract

“…Alguns gêneros já receberam tratamento monográfi co por especialistas brasileiros, como é o caso de Melananthus, Metternichia, Protoschwenckia e Schwenckia (Carvalho 1966a;1986;1966b;1978;respectivamente), além de Petu-nia e Calibrachoa (Stehmann 1999). Outros gêneros, como Aureliana e Lycium, por exemplo, foram estudados pelos argentinos Hunziker & Barboza (1990) e Bernardello (1986), respectivamente.…”

Section: Introductionunclassified

“…Alguns gêneros já receberam tratamento monográfi co por especialistas brasileiros, como é o caso de Melananthus, Metternichia, Protoschwenckia e Schwenckia (Carvalho 1966a;1986;1966b;1978; respectivamente) Agra 1999Agra , 2000. Além destes, diversos estudos fl orísticos contribuíram para o conhecimento da família no Brasil (Augusto & Edésio 1943;Rambo 1961;Angely 1965Angely , 1970Cabrera 1965Cabrera , 1979Smith & Downs 1966;Morton 1976;Carvalho 1985Carvalho , 1997aCarvalho , 1997bBarbará & Carvalho 1996;Aguiar et al 1998;Carvalho et al 2001;Mentz & Oliveira 2004).…”

unclassified

Taxonomic synopsis and analytical key for the genera of Solanaceae from Rio Grande do Sul, Brazil

2011

View full text Add to dashboard Cite

Sinopse taxonômica e chave ilustrada dos gêneros de Solanaceae ocorrentes no Rio Grande do Sul, Brasil As obras mais relevantes sobre as Solanaceae brasileiras, escritas no século XIX, são de Vellozo (1829-1831), Sendtner (1846) e Dunal (1852). Contribuições taxonômicas importantes também foram dadas, mais tarde, por Bitter (1912a-f; 1913a-g; 1914a-b;1917; 1919a-b;1920; 1922a-b), Witasek (1910), Morton (1944) e Smith & Downs (1964.Alguns gêneros já receberam tratamento monográfi co por especialistas brasileiros, como é o caso de Melananthus, Metternichia, Protoschwenckia e Schwenckia (Carvalho 1966a;1986;1966b;1978; respectivamente) Agra 1999Agra , 2000. Além destes, diversos estudos fl orísticos contribuíram para o conhecimento da família no Brasil (Augusto & Edésio 1943;Rambo 1961;Angely 1965Angely , 1970Cabrera 1965Cabrera , 1979Smith & Downs 1966;Morton 1976;Carvalho 1985Carvalho , 1997aCarvalho , 1997bBarbará & Carvalho 1996;Aguiar et al. 1998;Carvalho et al. 2001;Mentz & Oliveira 2004).Os trabalhos de D' Arcy (1979; 1991) e de Hunziker (1979), com um enfoque da família no mundo e na Amé-rica do Sul, respectivamente, foram pioneiros em reunir informações sobre os diferentes gêneros e propor classificações supragenéricas. Hunziker (2001) reuniu em sua obra informações sobre 92 gêneros e propôs uma classifi cação em subfamílias, tribos e subtribos, baseada em caracteres morfológicos, embriológicos, anatômicos e em resultados de análises fi toquímicas. Estudos de biologia molecular (Spooner et al. 1993;Olmstead et al. 1999), no entanto, têm demonstrado a necessidade de reformulação deste e de outros sistemas propostos.A identidade dos táxons e a contribuição qualitativa e quantitativa de Solanaceae na fl ora do Rio Grande do Sul são metas observadas a partir da obra pioneira de Rambo (1961), que em um estudo preliminar, mencionou a ocorrência de quatorze gêneros e 78 espécies. Os estudos fl orísticos ou taxonômicos mais recentes, com ênfase nos táxons ocorrentes no Estado, contemplaram os gêneros Bouchetia O objetivo deste trabalho é fornecer subsídios para a identifi cação dos gêneros de Solanaceae que ocorrem no Rio Grande do Sul, visando contribuir com informações fl orístico-taxonômicas, para uma atualização do conhecimento da fl ora do Estado. Material e métodosA chave analítica e as descrições da família e dos gêneros foram feitas com base nos dados morfológicos qualitativos e quantitativos de exemplares vivos e herborizados coletados no Rio Grande do Sul, bem como nas informações da bibliografi a disponível, incluindo trabalhos clássicos e as revisões mais recentes. Para características importantes foram elaboradas ilustrações relacionadas na chave. Plantas herbáceas, trepadeiras, hemiepífi tas, arbustivas ou arbóreas, inermes ou armadas. Folhas simples, inteiras ou pinatissectas, helicoidais, rosetadas ou pseudoverticiladas, pecioladas ou sésseis, sem estípulas. Infl orescências cimosas, uni ou plurifl oras, pedunculadas ou não. Flores pentâmeras, diclamídeas, heteroclamídeas, monoclinas, pedicelada...

show abstract

Sessea Carvalho et Schnoor - nova seção para o gênero Cestrum (Solanaceae)

Cited by 5 publications

References 1 publication

Karyotype differentiation of four Cestrum species (Solanaceae) revealed by fluorescent chromosome banding and FISH

Karyotype differentiation of four Cestrum species (Solanaceae) revealed by fluorescent chromosome banding and FISH

Breeding sites of Neotropical Drosophilidae (Diptera): IV. living and fallen flowers of Sessea brasiliensis and Cestrum spp. (Solanaceae)

Taxonomic synopsis and analytical key for the genera of Solanaceae from Rio Grande do Sul, Brazil

Contact Info

Product

Resources

About