2002
DOI: 10.1007/s00468-002-0200-8
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Ultrastructure of Eucalyptus grandis × E. urophylla plants cultivated ex vitro in greenhouse and field conditions

Abstract: The young and expanded leaf micromorphology and ultrastructure of Eucalyptus grandis × E. urophylla juvenile plants, cultivated in greenhouse and field conditions, were analyzed by scanning and transmission electron microscopy. In greenhouse leaves epicuticular wax needles covered the abaxial and adaxial surfaces. On the adaxial surface, the needles form an atypical arrangement in lines, mainly over the anticlinal wall of epidermis cells. After plant transfer to field conditions, the organization of epicuticul… Show more

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Cited by 13 publications
(11 citation statements)
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“…The stomata of E. globulus emblings showed an amphistomatous distribution both in vitro and during acclimatization, supporting previous data for this species under field conditions (Pereira et al 1987). Louro et al (1999) described a similar distribution in in vitro plants of Eucalyptus hybrids, which was then replaced by a hypostomatous organization after acclimatization (Louro et al 2003). Curiously, the amphistomatous distribution in E. globulus was reported to be a characteristic of adult-type leaves while it has a hypostomatous distribution in juvenile leaves (James et al 1999).…”
Section: Discussionsupporting
confidence: 58%
See 1 more Smart Citation
“…The stomata of E. globulus emblings showed an amphistomatous distribution both in vitro and during acclimatization, supporting previous data for this species under field conditions (Pereira et al 1987). Louro et al (1999) described a similar distribution in in vitro plants of Eucalyptus hybrids, which was then replaced by a hypostomatous organization after acclimatization (Louro et al 2003). Curiously, the amphistomatous distribution in E. globulus was reported to be a characteristic of adult-type leaves while it has a hypostomatous distribution in juvenile leaves (James et al 1999).…”
Section: Discussionsupporting
confidence: 58%
“…E. globulus in vitro leaves showed dorsiventral characteristics identical to those of ex vitro young leaves (James et al 1999). Similarly, in Eucalyptus hybrids transferred from in vitro to ex vitro conditions, an increase in the size and number of mesophyll cells occurred, thus providing a better distinction between palisade and spongy parenchyma (Louro et al 2003).…”
Section: Discussionmentioning
confidence: 87%
“…Louro et al (2003) e Romano & MartinsLoucao (2003) trabalhando respectivamente com Quercus suber L. e um híbrido de eucalípto (Eucalyptus grandis W. Hill ex. Maiden × E. urophylla S.T.…”
Section: Resultsunclassified
“…Diversos estudos histológicos demonstraram que os órgãos vegetativos de plantas desenvolvidas in vitro apresentam tecidos e estruturas pouco diferenciados se comparados com plantas cultivadas em casa-de-vegetação (APÓSTOLO et al, 2005;LOURO et al, 2003). Além disso, o número e formato dos estômatos também são afetados, o que pode acarretar uma maior ou menor eficiência fotossintética da planta (OSÓRIO et al, 2005 (MURASHIGE & SKOOG, 1962), suplementado com 30 g.L -1 de sacarose, 6 g.L -1 de ágar e o pH do meio ajustado em 6,0 e, em seguida, autoclavado por 15 minutos.…”
Section: (Recebido Em 22 De Setembro De 2006 E Aprovado Em 30 De Maiounclassified
“…Contudo, estudos anatômicos demonstraram que órgãos vegetativos de plantas desenvolvidas in vitro podem ter estruturas e tecidos pouco desenvolvidos quando comparados com plantas da mesma espécie, cultivadas em casa de vegetação (Louro et al, 2003).…”
Section: Introductionunclassified