Consulta: creatorFacets:"Isaias,Rosy Mary dos Santos"
Registros recuperados: 14
Data/hora: 06/06/2024 07:57:13

Occurrence and structure of extrafloral nectariesin Pterodon pubescens Benth. and Pterodon polygalaeflorus Benth.
Provedor de dados: 86
Autores: Paiva,Élder Antônio Sousa e; Morais,Helena Castanheira de; Isaias,Rosy Mary dos Santos; Rocha,Dulce Maria Sucena da; Oliveira,Paulo Eugênio.
Extrafloral nectaries (EFNs) are structurally variable and widely spread among the angiosperms. The occurrence of EFNs in leaves of Pterodon polygalaeflorus Benth. and Pterodon pubescens Benth. (Fabaceae: Papilionoideae) were detected in adult specimens, at the time of production of new buds and flowers. The goals of the present study are to register the occurrence of the EFNs in P. pubescens and P. polygalaeflorus, and provide comparative data on the anatomical structures. The EFNs occur in the rachis and are located under the insertion of each petiolule. Each nectary consists of a small elevation whose apical portion is deeply invaginated, resulting in a depression (secretory pole), a common characteristic of both species. Unicellular, nonglandular...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Nectaries; Plant anatomy; Plant secretions; Nectar; Plant protection; Herbivores; Plant animal relations.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2001000200002

Reações de defesas químicas e estruturais de Lonchocarpus muehlbergianus Hassl. (Fabaceae) à ação do galhador Euphalerus ostreoides Crawf. (Hemiptera: Psyllidae)
Provedor de dados: 88
Autores: Oliveira,Dênis Coelho de; Christiano,Jaciara de Cássia Souza; Soares,Geraldo Luiz Gonçalves; Isaias,Rosy Mary dos Santos.
Galhas são estruturas vegetais induzidas em resposta ao ataque de organismos indutores. Euphalerus ostreoides (Psyllidae) induz galhas sobre a face adaxial de folíolos nas nervuras de segunda ordem de Lonchocarpus muehlbergianus (Fabaceae). Seções anatômicas foram realizadas e comparados os tecidos de folíolos sadios com os de galhas imaturas e maduras. Testes histoquímicos para detecção de derivados fenólicos, flavonóides, ligninas, lipídios e amido foram realizados para avaliar o impacto químico causado pelo galhador. Em termos estruturais, a perda de sinuosidade das células epidérmicas, a neoformação de tricomas, de células condutoras e de fibras foram os caracteres mais conspícuos observados em decorrência da indução das galhas. Destaca-se a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anatomia; Euphalerus; Galha; Histoquímica; Lonchocarpus.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042006000400015

Anatomical and developmental aspects of leaf galls induced by Schizomyia macrocapillata Maia (Diptera: Cecidomyiidae) on Bauhinia brevipes Vogel (Fabaceae)
Provedor de dados: 88
Autores: Sá,Camila Emiliane Mendes de; Silveira,Fernando A. O.; Santos,Jean C.; Isaias,Rosy Mary dos Santos; Fernandes,G. Wilson.
Samples of healthy leaves and galls induced by Schizomyia macrocapillata Maia on Bauhinia brevipes Vogel were submitted to routine techniques to investigate gall anatomy and development. Pouch galls are induced on the abaxial surface of unfolded immature leaves, and become spheroid with long reddish hairs covering their external surface. Galls occur isolated or coalesce when in larger numbers. Gall development was divided into six phases: 1) initiation; 2) tissue re-arrangement; 3) tissue differentiation; 4) maturation; 5) growth phase; and 6) dehiscence. This last phase corresponds to gall senescence, which takes place just after the larva exits the chamber to pupate. An important developmental phase of tissue reorientation was recorded after the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ambrosia gall; Gall anatomy; Gall midge; Mycetophagy; Ontogenesis.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042009000200011

Morfologia e anatomia foliar de três morfotipos de Marcetia taxifolia (A. St.-Hil.) DC. (Melastomataceae) na Serra do Cipó, MG
Provedor de dados: 88
Autores: Gardoni,Lívia Cristina de Paiva; Isaias,Rosy Mary dos Santos; Vale,Fernando Henrique Aguiar.
Nos campos rupestres da Serra do Cipó, MG, é possível distinguir morfotipos de M. taxifolia com intenso polimorfismo. Os objetivos deste estudo foram caracterizar e interpretar comparativamente a morfologia e a anatomia foliar de três morfotipos em condições de campo e cultivados, relacionando os fenótipos com variações ambientais. Os morfotipos foram denominados "Rosa", "Branco" e "Rosa Cristal" devido à cor das flores e ao aspecto do solo. Foram medidos no campo: altura da planta, área da copa, diâmetro da base caulinar e número de eixos caulinares. Em casa de vegetação, sementes de cada morfotipo germinaram em seu solo de origem e no dos outros dois morfotipos. Lâminas histológicas permanentes e temporárias de folha foram feitas para estudo anatômico....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anatomia; Campo rupestre; Marcetia taxifolia; Morfologia; Plasticidade fenotípica.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042007000300013

Ontogênese da folha e das galhas induzidas por Aceria lantanae Cook (Acarina:Eriophyidae) em Lantanacamara L. (Verbenaceae)
Provedor de dados: 88
Autores: Moura,Maria Zabelê Dantas; Soares,Geraldo Luiz Gonçalvez; Isaias,Rosy Mary dos Santos.
Aceria lantanae é um ácaro fitófago indutor de galhas em folhas de Lantana camara. O estudo comparativo de caracteres histológicos e histométricos durante a ontogênese foliar e das galhas visa determinar quais eventos da morfogênese dos tecidos sadios são alterados pelo galhador. A ontogênese foliar de L. camara segue os padrões descritos na literatura. A indução de galhas provoca hiperplasia da epiderme e do sistema fundamental. No estágio de crescimento e desenvolvimento, a invaginação da lâmina foliar origina a câmara ninfal, onde os eriofídeos se reproduzem. O revestimento interno dessa câmara constitui o tecido nutritivo, no qual os indutores se alimentam, estimulando as divisões celulares. No estágio de maturação, o aumento no tamanho da estrutura é...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aceria; Anatomia foliar; Desenvolvimento; Galha; Lantana.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042009000200007

Phyllocnistis hemera sp. nov. (Lepidoptera: Gracillariidae): a new species of leaf-miner associated with Daphnopsis fasciculata (Thymelaeaceae) in the Atlantic Forest
Provedor de dados: 92
Autores: Fochezato,Júlia; Brito,Rosângela; Isaias,Rosy Mary dos Santos; Gonçalves,Gislene Lopes; Moreira,Gilson R.P.
ABSTRACT During recent studies performed in the Atlantic Forest, a new species of Phyllocnistinae (Gracillariidae), Phyllocnistis hemera sp. nov., leaf miner of Daphnopsis fasciculata (Thymelaeaceae) was discovered. The adults are described and illustrated as well as the immature stages, with notes on natural history including a description of the leaf mine. Additionally, DNA barcode sequences were compared to other representatives of Phyllocnistinae to test for the specific status of P. hemera and to infer phylogenetic relationships. This is the fifth species described for the genus Phyllocnistis in the Atlantic Forest and the first record of a gracillarid mining Thymelaeaceae leaves.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Microlepidoptera; New species; Morphology; DNA barcoding; Neotropical region.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262018000100057

Relações entre o teor de fenóis totais e o ciclo das galhas de Cecidomyiida e em Aspidosperm a spruceanum Müll. Arg. (Apocynaceae)
Provedor de dados: 39
Autores: Formiga,Anete Teixeira; Gonçalves,Samuel José de Melo Reis; Soares,Geraldo Luiz Gonçalves; Isaias,Rosy Mary dos Santos.
Alterações morfológicas detectadas em diversas espécies vegetais em função da indução de galhas são comumente acompanhadas de mudanças químicas importantes para o estabelecimento e manutenção do sistema galhador-planta hospedeira. O estudo da variação do teor de fenóis totais e sua relação com o desenvolvimento das galhas no sistema Aspidosperma spruceanum-Cecidomyiidae foi realizado ao longo de um ano, no qual foram detectados pelo menos dois ciclos de vida dos insetos indutores. O nível de infestação foliar foi alto, atingindo 87%, e os Cecidomyiidae tiveram a região internervural como sítio preferencial de oviposição. A variação sazonal no conteúdo de fenóis totais nas amostras de folhas sadias e galhadas foi primariamente relacionada às condições...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aspidosperma; Cecidomyiidae; Galhas; Interações inseto-planta; Morfometria.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062009000100012

Seasonal variation of phenolic content in galled and non-galled tissues of Calliandra brevipes Benth (Fabaceae: Mimosoidae)
Provedor de dados: 39
Autores: Detoni,Michelle de Lima; Vasconcelos,Eveline Gomes; Rust,Naiara Miranda; Isaias,Rosy Mary dos Santos; Soares,Geraldo Luiz Gonçalves.
Two species, Tanaostigmodes ringueleti and T. mecanga, induce distinct galls on Calliandra brevipes Benth (Fabaceae: Mimosoidae), a globose and a fusiform gall morphotype. Seasonal changes of phenolic content in the tissues of the two distinct galls were compared to those of non-galled leaves and stems of the host plants over one year. The variation in the phenolic content profiles was similar in both non-galled and galled tissues, and was primarily associated with changes in the levels of rainfall, indicating a direct response to hydric stress. In periods of drastic changes in water precipitation, the alterations were significantly higher in non-galled than in galled tissues suggesting that the gall inducers might limit the variation in the phenolic...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Tanaostigmodes ringueleti; Tanaostigmodes mecanga; Gall; Insect-plant interaction; Phenol.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062011000300013

Phytotoxicity of the extracts of Lonchocarpus muehlbergianus Hassl. (Fabaceae) leaflets and galls on seed germination and early development of lettuce
Provedor de dados: 39
Autores: Oliveira,Denis Coelho de; Soares,Geraldo Luiz Gonçalves; Isaias,Rosy Mary dos Santos.
Galls induced by Euphalerus ostreoides (Hemiptera: Psyllidae) cause structural and chemical alterations on Lonchocarpus muehlbergianus leaflets. Healthy and galled leaflet tissues of this plant species are rich in secondary metabolites with potential allelopathic effects. This research compares the allelopathic effects of the aqueous extracts of L. muehlbergianus leaflets and galls on seeds and seedlings of Lactuta sativa, and evaluates the chemical impact produced by a gall-inducing insect on the other trophic levels associated with it. The extracts were obtained through static maceration in distilled water (5% p/v). The treatments consisted of aqueous crude extracts and those previously filtered in polyvinylpirrolidone (PVP). After seven days, seedling...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Allelopathy; Euphalerus ostreoides; Gall; Herbivory; Lonchocarpus muehlbergianus.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062008000400020

Phenological relationships between two insect galls and their host plants: Aspidosperma australe and A. spruceanum (Apocynaceae)
Provedor de dados: 39
Autores: Campos,Priscila Tolentino; Costa,Maria Cecília Dias; Isaias,Rosy Mary dos Santos; Moreira,Ana Sílvia Franco Pinheiro; Oliveira,Denis Coelho de; Lemos-Filho,José Pires de.
Although gall diversity in the Neotropical region is immense, comparative studies on the phenology of host plants and their galls are scarce. Gall systems generally require high levels of phenological synchrony between the associated organisms. The relationships between the phenology of two leaf galls induced by an unidentified Cecidomyiidae in Aspidosperma spruceanum Benth. ex Müell. Arg. and by Pseudophacopteron sp. in A. australe Müell. Arg. were investigated. The investigation was performed on ten individuals per species in 15-day intervals taking into consideration the percentage of galled leaves. In a one-year study, three distinct phenophases for the leaf galls and four phenophases for host plants were observed. The maximum percentage of leaf galls...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Gall abundance; Plant interaction; Phenology; Synchronism.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062010000300016

Galling insects are bioindicators of environmental quality in a Conservation Unit
Provedor de dados: 39
Autores: Santana,André Portugal; Isaias,Rosy Mary dos Santos.
Galls are well distributed across the World and among plant families. Their diversity can support the status of conservation of an area as an urban park, once inventories are presented. These inventories also help to understand the morphological patterns of the galls, based on their most common shape, color, host botanical families, inducers and galled organs. This study is about an inventory of galls at Parque Estadual Serra Verde, Brazil. This conservation unit is an urban park strongly anthropized in a transition area of Cerrado and Mata Atlântica. Galls from four different trails were observed, and collected monthly during one year. The terminology morphospecies was used to distinguish the galls because the identification of the inducers were not...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biodiversity; Conservation unit; Galling insects; Inventory; Neotropical galls.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062014000400014

Comparative anatomy of the absorption roots of terrestrial and epiphytic orchids
Provedor de dados: 52
Autores: Moreira,Ana Sílvia Franco Pinheiro; Isaias,Rosy Mary dos Santos.
The present study compared roots of terrestrial and epiphytic Orchidaceae, analyzing the anatomical characteristics from an ecological point of view. The material was collected at three different sites in Minas Gerais / Brazil and was fixed in FAA. Transverse sections were obtained by freehand sections or from material previously embedded in Paraplast® or Historesin®. The prominent characteristics of the epiphytic group were: significant smaller perimeter, epidermis with 3 or more cell layers, U-thickened exodermal cell walls, O-thickened endodermal cell walls, and a low ratio between the caliber and the number of protoxylem arches. The terrestrial group presented simple or multiseriate epidermis, and exodermis and endodermis with typical Casparian strips....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Orchids; Terrestrial; Epiphytic; Anatomy; Adaptations.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132008000100011

The influence of light intensity on anatomical structure and pigment contents of Tradescantia pallida (Rose) Hunt. cv. purpurea Boom (Commelinaceae) leaves
Provedor de dados: 52
Autores: Paiva,Élder Antonio Sousa; Isaias,Rosy Mary dos Santos; Vale,Fernando Henrique Aguiar; Queiroz,Cristina Generosa de Senna.
The aim of this work was to study the effects of five different light intensities on the anatomical structure and on the pigment contents in leaves of Tradescantia pallida cv. purpurea. Once light intensity became lower, the thickness of leaf lamina and mesophyll were reduced. Adjustments in light-harvesting antenna size were observed: an increase in chlorophyll a + b/carotenoids ratio at low-light growth conditions. There was a strong positive linear correlation between the light intensity values and anthocyanin contents. Hence, T. pallida cv. purpurea acclimation to distinct environmental conditions might be related to its capacity of altering structurally and physiologically its phenotype.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Leaf anatomy; Light intensity; Chlorophyll; Carotenoids; Anthocyanin; Tradescantia.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132003000400017

Comparative stomatal conductance and chlorophyll a fluorescence in leaves vs. fruits of the cerrado legume tree, Dalbergia miscolobium
Provedor de dados: 61
Autores: Lemos Filho,José Pires de; Isaias,Rosy Mary dos Santos.
The aim of this study was to compare water vapor conductance and chlorophyll a fluorescence between leaflets and fruits of Dalbergia miscolobium, the Jacaranda tree. The frequency of stomata on the leaflets was 20 times higher than that observed on the fruits, and this was related with the lower conductance of the fruits in comparison with the leaflets. The potential quantum yield of PSII (Fv /Fmax) was significantly lower in fruits than in leaflets. The Fv /Fmax values for leaflets increased to over 0.8 during the afternoon, indicating the occurrence of dynamic photoinhibition. In contrast, Fv /Fmax values for fruits remained low even at early morning, indicating the occurrence of chronic photoinhibition. The maximum values of effective quantum yield...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Jacaranda tree; Stomata; Quantum efficiency of PSII; Water vapor conductance.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202004000200004