13 documents found, page 1 of 2
How do leaf wetting events affect gas exchange and leaf lifespan of plants from...
Holanda, Alexandre Emanuel Regis; Souza, Bruno Cruz; Carvalho, Ellen Cristina Dantas; Oliveira, Rafael Silva; Martins, Fernando RobertoThis article has been accepted for publication and undergone full peer review but has not been through the copyediting, typesetting, pagination and proofreading process, which may lead to differences between this version and the Version of Record. Please cite this article as doi: 10.1111/plb.13023 This article is protected by copyright. All rights reserved.
Why is liana abundance low in semiarid climates?
Carvalho, Ellen Cristina Dantas; Martins, Fernando Roberto; Oliveira, Rafael Silva; Soares, Arlete Aparecida; Araújo, Francisca SoaresLianas are abundant in seasonal tropical forests, where they avoid seasonal water stress presumably by accessing deep-soil water reserves. Although lianas are favoured in seasonal environments, their occurrence and abundance are low in semiarid environments. We hypothesized that lianas do not tolerate the great water shortage in the soil and air characteristic of semiarid environments, which would increase the ...
Hydraulic architecture of lianas in a semiarid climate: efficiency or safety?
Carvalho, Ellen Cristina Dantas; Martins, Fernando Roberto; Soares, Arlete Aparecida; Oliveira, Rafael Silva; Muniz, Celli RodriguesXylem anatomical traits can provide insights regarding the mechanisms affecting the distribution of vascular plants across environmental gradients. In this study, we aimed to investigate the hypothesis that lianas occurring in semiarid environments have characteristics that maximize the xylem resistance to tension-induced cavitation along the root- -stem-branch continuum. To gather information regarding the hyd...
Identification and determination of the inulin content in the roots of the Nort...
Pontes, Ana Georgina Oliveira; Silva, Karine Lima; Fonseca, Said Gonçalvez da Cruz; Soares, Arlete Aparecida; Feitosa, Judith Pessoa de AndradeA polysaccharide was extracted from the roots of Pombalia calceolaria, a plant used in folk medicine in Northeastern Brazil, by decoction followed by precipitation with methanol, yielding a concentration of 13.0% w/w, and purification with acetone. The molar mass peak was estimated to be 4.0 × 103 Da using gel permeation chromatography (GPC). Polarized light photomicrography of histological sections revealed th...
Hydraulic architecture of lianas in a semiarid climate: efficiency or safety?
Carvalho, Ellen Cristina Dantas; Martins, Fernando Roberto; Soares, Arlete Aparecida; Oliveira, Rafael Silva; Muniz, Celli RodriguesXylem anatomical traits can provide insights regarding the mechanisms affecting the distribution of vascular plants across environmental gradients. In this study, we aimed to investigate the hypothesis that lianas occurring in semiarid environments have characteristics that maximize the xylem resistance to tension-induced cavitation along the root- -stem-branch continuum. To gather information regarding the hyd...
Adaptações anatômicas em folhas de marmeleiro e velame da caatinga brasileira
Barros, Ileane Oliveira; Soares, Arlete AparecidaWater availability is the main limiting factor for plants in arid and semi-arid environments. In these plants, a combination of characteristics contributes to water economy, among them being anatomical features. Thus, studies in leaves of the quince (Croton blanchetianus) and the velame (Croton heliotropiifolius), two common species in the caatinga and of importance in beekeeping, were performed to verify adapt...
Caracterização físico-química e histológica do desenvolvimento de sapoti
Miranda, Maria Raquel Alcântara de; Filgueiras, Heloisa Almeida Cunha; Alves, Ricardo Elesbão; Soares, Arlete AparecidaSapodilla is a tropical fruit with great marketing potential that has not been investigated thoroughly. The objectives of the present study were to characterize the physical, chemical and histological changes of sapodilla and to identify harvest maturity indices relating these variables. Sapodilla were tagged at the beginning of the development with 8 mm in diameter, harvested after 45; 60; 90; 120; 150 and 180...
Male and female booths with separate entrances in the tiny flowers of Guazuma u...
Westerkamp, Christian; Soares, Arlete Aparecida; Amaral Neto, Laércio P. doIn spite of their tiny dimensions (3 x 5 mm2 ), the strongly honey-scented flowers of Guazuma ulmifolia (Malvaceae–Byttnerioideae) provide six sexual chambers. A central female unit is surrounded by five interconnected male compartments. At the onset of anthesis the strap-shaped odoriferous petal appendages form an open star with the female chamber in the centre. Hereafter, they wilt, intermingle and finally lo...
Caracterização anatômica das estruturas secretoras e produção de óleo essencial...
Santos, Maurício Reginaldo Alves dos; Innecco, Renato; Soares, Arlete AparecidaThe objective of this work was to characterize anatomically the secretory structures and evaluate the influence of harvest times in the rainy and dry seasons on the content and composition of the essential oil of Lippia alba (Mill.) N.E. Brown (limonene-carvone chemotype), at the conditions of Ceará, Brazil. An anatomical evaluation of leaves and glandular trichomes structures was made. Leaves were harvested at...
Tecido nutritivo em flores de gravioleira. Annona muricata L.
Aguiar, José Rubens; Bueno, Dalva Maria; Freitas, Breno Magalhães; Soares, Arlete Aparecida; Costa, José Tarciso AlvesSoursop tree (Annona muricata) is a tropical fruit crop which cultivation is under an increasing development in the Northeastern part of Brazil. Fruit production is usually low due to deficient pollination. Severa! Annonaceae species are pollinated by coleoptera. Soursop flowers are visited by beetles Cyclocephala gravis Bates which feed upon two nourishing tissue areas found on the adaxial and basal portions o...