Alterações morfoanatômicas em plantas de &lt;em&gt;Lithraea molleoides&lt;/em&gt; (Vell.) Engl. submetidas ao alagamento

Medri, Moacyr Eurípedes; Ferreira, Ana Cláudia; Kolb, Rosana Marta; Bianchini, Edmilson; Pimenta, José Antônio; Davanso-Fabro, Viviane Maria; Medri, Cristiano

doi:10.4025/actascibiolsci.v29i1.408

Cited by 25 publications

(34 citation statements)

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“…Eng. (Medri et al 2007), a produção de raízes superfi ciais foi nula ou baixa em plantas cultivadas em solo alagado, embora as espécies tenham suportado o período de alagamento. Konings & Jackson (1979), comprovaram que a concentração de etileno pode aumentar até 500 vezes em solos hidromórfi cos. Juntamente com a ação de outros hormônios, o etileno está envolvido na produção de raízes superfi ciais, epinastia e abscisão foliar (Bradford & Yang 1980;Reid & Bradford 1984;Kozlowski 1984;Cao & Conner 1999).…”

Section: Discussionunclassified

“…Do mesmo modo que em Aegiphila sellowiana, a formação de fi ssuras peridérmicas e lenticelas hipertrofi adas ocorreu, sob condição de alagamento, em plantas de Peltophorum dubium , Chorisia speciosa (Bianchini et al 2000;Povh et al 2005), Tabebuia avellanedae Lorentz ex Griseb (DavansoFabro et al 2003), Cecropia pachystachya Trec. (Batista et al 2008), Lithraea molleoides (Medri et al 2007). Em plantas jovens de Peltophorum dubium, as lenticelas possibilitaram a entrada de oxigênio atmosférico, que se difundiu da parte aérea para as raízes ).…”

Section: Discussionunclassified

“…Aumentos de espaços intercelulares em raízes também foram verifi cados em Jacaranda puberula (Pimenta et al 1996), Sebastiania commersoniana (Baillon) Smith & Downs (Kolb et al 1998), Sesbania virgata (Davanso-Fabro et al 1998), Cecropia pachystachya (Batista et al 2008) e Lithraea molleoides (Medri et al 2007). Armstrong et al (1994) e Medri et al (2002) afi rmaram que raízes aerenquimatosas aumentam a difusão e o transporte de gases entre o ambiente externo e a planta.…”

Section: Discussionunclassified

“…Os materiais seccionados à mão livre ou em micrótomo, com espessura de 7μm, foram corados em azul de astra-fucsina básica (1:1), safranina-fast green (1:1) (Luque et al 1996) ou azul de toluidina 0,05%, pH 4,7 (O'Brien et al 1964). As lâminas permanentes foram montadas em Permount, enquanto as seccionadas manualmente foram montadas com glicerina (Davanso-Fabro et al 1998, 2003Medri et al 1998Medri et al , 2007.…”

Section: Procedimento Laboratorialunclassified

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Morfoanatomia de órgãos vegetativos de plantas juvenis de Aegiphila sellowiana Cham. (Lamiaceae) submetidas ao alagamento do substrato

Medri

Ruas

et al. 2011

Acta Bot. Bras.

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ABSTRACT(Morpho-anatomy of vegetative organs in seedlings of Aegiphila sellowiana Cham. (Lamiaceae) subject to flooding). In order to uncover the morpho-anatomical responses of tree species to hypoxia, we studied the effects of flooding on vegetative organs of Aegiphila sellowiana. Young individuals were kept in drained and flooded soil for 50 and 80 days. Under flooding, there was a mortality rate of 40%. The surviving plants produced peridermic fissures, superficial roots and hypertrophied lenticels. Secondary roots of flooded plants presented greater diameter, thicker cortex, greater diameter of the cortical cells, larger intercellular spaces, and thinner vessel elements and vascular tissues. In the main roots under secondary growth and hypocotyls, cork and phelloderm became thicker under flooding. Leaves of flooded plants presented thicker midrib, larger mesophyll, higher number of trichomes and smaller stomata. Considering that part of the plants subject to flooding have died, it is possible to suggest that A. sellowiana is intolerant of soil inundation. However, the surviving plants showed morpho-anatomical modifications that could have conferred some tolerance to them. Thus, the differential tolerance observed among individuals of A. sellowiana indicates a variability of genotypes in the samples used in this study.

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Section: Discussionunclassified

Section: Procedimento Laboratorialunclassified

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Morfoanatomia de órgãos vegetativos de plantas juvenis de Aegiphila sellowiana Cham. (Lamiaceae) submetidas ao alagamento do substrato

Medri

Ruas

et al. 2011

Acta Bot. Bras.

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“…According to GRANDIS et al (2010), plants under conditions of excessive ground water present reduced energy efficiency, since roots under anoxia present difficulties in maintaining the energy flow in the tissues. In addition, MEDRI et al (2007), studying morphoanatomic changes of Lithrae molleioides, subjected to flooding, that under excessive water conditions, plants presented lower starch content in the stem and lower production of secretory structures. Figure 2C shows the irrigation depth of 75% of the ETo, which provided greater mean dry weight of leaves of E. globulus (21.04g).…”

Section: Resultsmentioning

confidence: 99%

Influence of water regime on initial growth and essential oil of Eucalyptus globulus

et al. 2017

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Understanding the water requirement of forest species in the seedling stage supports cost reduction by eliminating unnecessary irrigation in addition to providing higher productivity. This study was carried out to evaluate the effect of the water regime on initial growth, leaf production and content and chemical composition of the essential oil of Eucalyptus globulus , during the first 120 days of cultivation. The experiment employed a completely randomized design and was carried out at the Instituto de Ciências Agrárias da Universidade Federal de Minas Gerais (ICA/UFMG), Montes Claros, MG. Treatments consisted of six different water regimes (50%, 75%, 100%, 125%, 150% and 175% of the reference evapotranspiration - ETo) with four replicates. Plant growth was evaluated by measuring linear dimensions - height, stem diameter and number of leaves. The essential oil was extracted from fresh leaves by hydrodistillation in a Clevenger apparatus. The present study demonstrated that irrigation depths corresponding to 75% of the ETo are responsible for increased growth of E. globulus and increased dry matter production of leaves. The lowest irrigation levels were responsible for the greatest essential oil content. The essential oil was analyzed by gas chromatography-mass spectrometry (CG- MS), and eucalyptol (40.84% to 55.72%) was reported to be the major compound for all treatments. Compounds such as β-myrcene, α-Gurgujeno, Alloromadendreno, Varidiflorene appear under specific irrigation conditions.

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Lithraea molleoides (Vell.) Engler

López

Basile

Wallace

et al. 2021

Medicinal and Aromatic Plants of the World

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Alterações morfoanatômicas em plantas de <em>Lithraea molleoides</em> (Vell.) Engl. submetidas ao alagamento

Cited by 25 publications

References 4 publications

Morfoanatomia de órgãos vegetativos de plantas juvenis de Aegiphila sellowiana Cham. (Lamiaceae) submetidas ao alagamento do substrato

Morfoanatomia de órgãos vegetativos de plantas juvenis de Aegiphila sellowiana Cham. (Lamiaceae) submetidas ao alagamento do substrato

Influence of water regime on initial growth and essential oil of Eucalyptus globulus

Lithraea molleoides (Vell.) Engler

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