Estrutura foliar de Aechmea Ruiz &amp; Pav. subgênero Lamprococcus (Beer) Baker e espécies relacionadas (Bromeliaceae)

Aoyama, Elisa Mitsuko; Sajo, Maria das Graças

doi:10.1590/s0100-84042003000400005

Cited by 34 publications

(43 citation statements)

References 8 publications

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“…Silica bodies also occur in other Poales, such as Poaceae, Cyperaceae, Thurniaceae, Rapateaceae, Centrolepidaceae, Ecdeiocoleaceae and Joinvilleaceae , suggesting that this feature is a plesiomorphy for the order. In Bromeliaceae, the silica bodies are always of spherical shape and only occur in the epidermal cells as reported by Krauss (1948Krauss ( , 1949a, Tomlinson (1969), Flores (1975), Souza & Neves (1996), Sajo et al (1998), Aoyama & Sajo (2003), Arruda & Costa (2003), Proença & Sajo (2004), Scatena & Segecin (2005), Sousa et al (2005) and Proença & Sajo (2007) for both vegetative and reproductive organs. This fact corroborates the supposition of Prychid et al (2004) for whom the shape and localization of these bodies, although genetically controlled and little influenced by environmental factors, can present a systematic potential for some groups of monocotyledons.…”

Section: Discussionmentioning

confidence: 63%

“…The occurrence of raphides also has been registered in both vegetative and reproductive organs of Bromeliaceae (see Krauss 1948Krauss , 1949aBraga 1977;Brighigna et al 1984;Souza & Neves 1996;Arruda & Costa 2003;Aoyama & Sajo 2003;Segecin & Scatena 2004a, b;Sajo et al 2004Sajo et al , 2005Scatena & Segecin 2005;Sousa et al 2005;Proença & Sajo 2007). Within Poales (APG II 2003), such crystals occur in Eriocaulaceae, Joinvilleaceae, Sparganiaceae and Typhaceae (Dahlgren et al 1985) and probably represent a plesiomorphy for the order.…”

Section: Discussionmentioning

confidence: 98%

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Anatomy of the floral scape of Bromeliaceae

Proença¹,

Sajo²

2008

Rev. bras. Bot.

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-(Anatomy of the floral scape of Bromeliaceae). This paper describes the anatomy of the floral scape for 12 species of Bromeliaceae, belonging to the subfamilies Bromelioideae, Tillandsioideae and Pitcairnioideae. Although all the scapes have a similar organization, there are variations in the structure of the epidermis, cortex and vascular cylinder. Such variations are described for the studied scapes and, when considered together they can help to identify the species. These aspects are described for each scape and discussed under a taxonomic point of view.Key words -anatomy, Bromeliaceae, floral scape RESUMO -(Anatomia do escapo floral de Bromeliaceae). Este trabalho descreve a anatomia do escapo floral de doze espécies de Bromeliaceae pertencentes às subfamílias Bromelioideae, Tillandsioideae e Pitcairnioideae e tem como objetivo ampliar o conhecimento anatômico da família e desse órgão em particular. Embora todos os escapos apresentem uma organização similar, observam-se variações na estrutura da epiderme, do córtex e do cilindro vascular. Tais variações são descritas para os escapos estudados e, quando são analisadas em conjunto, podem auxiliar na identificação das espécies. Esses aspectos são descritos para cada um dos escapos e discutidos dentro de um contexto taxonômico.Palavras-chave -anatomia, Bromeliaceae, escapo floral 1.Part of PhD thesis developed at Universidade Estadual Paulista Rio

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Section: Discussionmentioning

confidence: 63%

Section: Discussionmentioning

confidence: 98%

Anatomy of the floral scape of Bromeliaceae

Proença¹,

Sajo²

2008

Rev. bras. Bot.

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“…Other evaluations confi rmed the patterns of Billbergia and Dyckia (Proença & Sajo 2007), but differed concerning the genus Aechmea, revealing stomata located at the same level (Aoyama & Sajo 2003) or at a level lower than that of the epidermal cells (Proença & Sajo 2004). In this study, it was found that stomata are elevated in relation to the surface in D. maritima, corroborating the data from the literature for the genus; and elevated for A. calyculata, and, at the same level, for B. nutans, which goes against the existing data for the genera.…”

Section: Discussionmentioning

confidence: 89%

Morphoanatomy and ontogeny of fruit in Bromeliaceae species

Fagundes

Mariath

2010

Acta Bot. Bras.

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Acta bot. bras. 24(3): 765-779. 2010. IntroductionBromeliaceae currently covers 58 genera and 3172 species (Luther 2008). The family is included in the order Poales (APG II 2003) and has a typically Neotropical geographic distribution (Smith & Downs 1974). Its representatives are epiphytic, rupicolous or terricolous herbs, whose fruits are classifi ed as capsules or berries (Benzing 2000).Although the monophyletic origin of this family has been confi rmed (Ranker et al. 1990;Horres et al. 2000;Barfuss et al. 2005), the origins, phylogenetic relations and circumscriptions of the subfamilies, genera and species are as yet little known, and, above all, there is much diffi culty in delimiting genera and species. Therefore, the infrafamilial relations of Bromeliaceae have been the target of several investigations, but the phylogeny of the group is still being intensely discussed, with signifi cant differences among the authors.Traditionally, Bromeliaceae is divided into three subfamilies: Pitcairnioideae, Tillandsioideae and Bromelioideae, distinguished especially by the morphology of fl owers, fruits and seeds (Smith & Downs 1974). However, Givnish et al. (2007) proposed a new arrangement for the family based on molecular data, increasing the number of subfamilies to eight (Brocchinioideae, Lindmanioideae, Tillandsioideae, Hechtioideae, Navioideae, Pitcairnioideae, Puyoideae and Bromelioideae). This new classifi cation became more natural, so that the recognized subfamilies are monophyletic.As for fruit morphology and anatomy, several studies have shown that they are used to delimit or resolve taxonomic problems among species, genera, tribes and even monotypical families, such as Tobe et al. (1992), Smitt et al. (1995), Doweld (1998), Decraene et al. (2000), Doweld (2001) and Moon & Hong (2006). Moreover, this type of investigation is essential to help understand the true origin of the fruits of angiosperms and to contribute to making their classifi cation more uniform. As the reproductive organ responsible for seed dispersal, through morphoanatomical studies, the fruit helps us to understand how the species are dispersed and these are important data for proposals to conserve biodiversity.Despite what has been presented about the importance of structural studies in fruit, these are few in comparison to those on other plant organs, and very few angiosperm families have a representative number of publications in this fi eld, as in the case of Fabaceae and Anacardiaceae. In contrast to these, only two anatomical studies of fruit were recorded for Bromeliaceae, in Ananas comosus (Okimoto 1948) and Tillandsia tricholepis (Morra et al. 2002).Therefore, the purpose of this study is to characterize and compare the morphoanatomy and ontogeny of the fruit of six species of Bromeliaceae -Aechmea calyculata and RESUMO -(Morfoanatomia e ontogenia de fruto em espécies de Bromeliaceae). O presente estudo objetivou apresentar um panorama acerca da estrutura de frutos em Bromeliaceae, devido à extrema escassez de estudos nessa área...

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“…22), com células guardas riniformes e câmaras subestomáticas típicas, bem definidas (Fig. 23), característica comum a muitas espécies da família Bromeliaceae descritas por diversos autores (Aoyama & Sajo 2003;Scatena & Segecin 2005;Souza et al 2005;Barboza et al 2006).…”

Section: Resultsunclassified

Alterações morfológicas foliares em abacaxizeiros cv. IAC "Gomo-de-mel" micropropagados e aclimatizados em diferentes condições de luminosidade

et al. 2009

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RESUMO -(Alterações morfológicas foliares em abacaxizeiros cv. IAC "Gomo-de-mel" micropropagados e aclimatizados em diferentes condições de luminosidade). Plantas micropropagadas geralmente apresentam dificuldades de adaptação ao meio ex vitro, sendo muitas vezes submetidas a processos de rustificação para minimizar os impactos decorrentes da mudança de ambiente. Uma vez que a folha e seus anexos destacam-se como importantes indicativos das estratégias adaptativas das plantas a ambientes adversos, este trabalho teve por objetivo comparar a anatomia foliar de plantas de abacaxi cv. IAC "Gomo-de-mel" cultivadas in vitro com microplantas aclimatizadas em diferentes condições de luminosidade, sob telado com 50% de sombreamento e em pleno sol para verificar a necessidade do processo de rustificação para este cultivar. Avaliações por meio de microscopia de luz e eletrônica de varredura da epiderme foliar, demonstraram aumento na densidade de escamas em ambas as superfícies das folhas, em microplantas dos ambientes ex vitro, principalmente em relação às que foram expostas diretamente ao sol. Observou-se ainda, aumento no espessamento da cutícula, na sinuosidade das células epidérmicas, e na distribuição e quantidade de fibras no mesofilo evidenciando a interferência das condições de luminosidade nas características morfológicas das microplantas. Essas alterações não prejudicaram o desenvolvimento das microplantas, indicando que não são necessárias etapas de rustificação para a aclimatização deste cultivar. Palavras-chave: aclimatização, Ananas comosus, anexos epidérmicos, microplantasABSTRACT -(Morphological alterations in leave of micropropagated pineapple plants cv. IAC "Gomo-de-mel" acclimatizated in different conditions of luminosity). Microprapagated plants usually show difficulties to adapt to ex vitro conditions, and many times are submitted to the rustication process to aim the reduction of all the impacts resulting from the environmental changes. Once the leaf and its annexes are important indicators of adaptability strategies of the plants to adverse environmental conditions, the objective of this work was to compare the leaf anatomy of pineapple cv. IAC "Gomo-de-mel" in vitro cultivated plants with microplants acclimatized in different conditions of luminosity, under mesh, with 50 % of shading and directly exposed to sunlight, to verify the needed of rustication process on this cultivar. Evaluations of the leaf epidermis using light and electronic scanning microscopy showed an increase on scale density in both leaves surfaces of the ex vitro microplants, mainly related to the ones directly exposed to sunlight. Subsequent observations showed an increase on cuticle thickness, on wavy contours of epidermal cells, and on the distribution and quantity of mesophyll fibers, evidencing the light conditions interference in morphological characteristics of these microplants. These alterations had not harmed microplant development, showing that are not need of rustication stages on the acclimatization process of this c...

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Estrutura foliar de Aechmea Ruiz & Pav. subgênero Lamprococcus (Beer) Baker e espécies relacionadas (Bromeliaceae)

Cited by 34 publications

References 8 publications

Anatomy of the floral scape of Bromeliaceae

Anatomy of the floral scape of Bromeliaceae

Morphoanatomy and ontogeny of fruit in Bromeliaceae species

Alterações morfológicas foliares em abacaxizeiros cv. IAC "Gomo-de-mel" micropropagados e aclimatizados em diferentes condições de luminosidade

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