Lignification
Mostrando 1-12 de 85 artigos, teses e dissertações.
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1. The aquatic species Pontederia azurea and P. crassipes (Pontederiaceae) in the Pantanal, Brazil: evidence of how plant structure can simultaneously reflect phylogeny and ecology
ABSTRACT Hydric fluctuations in the Pantanal comprise annual dry and wet seasons that modify local diversity and plant morphology and anatomy. Widespread in this wetland are the sympatric Pontederia azurea and P. crassipes, which, although primarily aquatic, can also develop in non-flooded environments. This study undertook a comparative investigation of the
Acta Bot. Bras.. Publicado em: 2021-03
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2. ERRATA
ABSTRACT In 2019, the atmospheric CO2 concentration exceeded the 415 ppm milestone for the first time in the human history. According to projections of the Intergovernmental Panel on Climate Change (IPCC), CO2 levels will continue to rise in the future, potentially affecting all living organisms. Plants with C3 metabolism may benefit from rising CO2 levels b
Braz. Dent. J.. Publicado em: 2020-09
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3. Elevated atmospheric CO2 increases Eucalyptus urophylla S. T. Blake stem diameter by stimulating cell proliferation and reducing lignin deposition
ABSTRACT In 2019, the atmospheric CO2 concentration exceeded the 415 ppm milestone for the first time in the human history. According to projections of the Intergovernmental Panel on Climate Change (IPCC), CO2 levels will continue to rise in the future, potentially affecting all living organisms. Plants with C3 metabolism may benefit from rising CO2 levels b
Acta Bot. Bras.. Publicado em: 2020-09
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4. Variation in root morphology of epiphytic orchids along small-scale and large-scale moisture gradients
ABSTRACT Root morphology is expected to respond to environmental conditions. Two earlier studies reported predictable changes in the structure of the velamen radicum (common in monocotyledons) along rainfall gradients, which was expected from its assumed role in plant-water-relations. The present study expanded on this idea by analysing nine root traits that
Acta Bot. Bras.. Publicado em: 2020-03
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5. Variation in root morphology of epiphytic orchids along small-scale and large-scale moisture gradients
ABSTRACT Root morphology is expected to respond to environmental conditions. Two earlier studies reported predictable changes in the structure of the velamen radicum (common in monocotyledons) along rainfall gradients, which was expected from its assumed role in plant-water-relations. The present study expanded on this idea by analysing nine root traits that
Acta Bot. Bras.. Publicado em: 11/11/2019
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6. Involvement of peroxidases in structural changes of barley stem
ABSTRACT The aim of this study was to investigate anatomical characteristics of barley (Hordeum vulgare L.) internodes and to reveal the connection with activity of guaiacol-peroxidases, their isoenzyme profiles, lignin, and cellulose content. Three lower internodes were sampled at elongation stage and differed in their anatomical features by showing that li
Bragantia. Publicado em: 29/05/2017
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7. Nutritional value of baled rice straw for ruminant feed
ABSTRACT The objectives of this study were to evaluate the effects of cultivation and hay making factors on chemical composition, protein fractionation, and digestibility in rice straw, as well as to identify the chemical fractions that contribute to the variation in its nutritional value for ruminants. Statistical procedures were performed in a model that i
R. Bras. Zootec.. Publicado em: 2016-07
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8. Estudos iniciais de caracterização funcional de peroxidases e laccases potencialmente envolvidas no processo de lignificação em cana-de-açúcar / Initial studies on the functional characterization of peroxidases and laccases potentially involved in the lignification process in sugarcane
Lignin is a complex heteropolymer deposited in the secondarily thickened walls of specialized plant cells to provide strength and rigidity for plants to stand upright and hydrophobicity to conducting cells for long-distance water transport. Although lignin is essential for plant growth and development, this phenolic polymer is the major plant cell wall compo
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/09/2012
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9. Relação entre a flexibilidade do caule de seringueira e a carência de boro.
Em algumas culturas com carência de B, observou-se menor deposição de lignina nos elementos do xilema, formando paredes finas e pouco resistentes e menor translocação de carboidratos das folhas para outras partes da planta. Com o objetivo de detectar essas alterações anatômicas no xilema de caules extremamente flexíveis de seringueira (Hevea spp.),
Pesquisa Agropecuária Brasileira. Publicado em: 2011
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10. Naringenin inhibits the growth and stimulates the lignification of soybean root
Os efeitos de naringenina, um intermediário da biossíntese de flavonóides, foram avaliados sobre o crescimento das raízes, as atividades da fenilalanina amônia liase (PAL) e peroxidases, bem como sobre os teores de compostos fenólicos e de lignina em plântulas de soja (Glycine max L. Merrill). Plântulas de três dias foram cultivadas em solução nut
Brazilian Archives of Biology and Technology. Publicado em: 2010-06
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11. Sistemas modelos de formação de lignina utilizando recursos sintéticos e celulares de Eucalyptus grandis (Hill ex Maiden). / Systems models of lignin formation using synthetic and cellular resources of Eucalyptus grandis (Hill ex Maiden).
The main objective of this research was to work out models for the study of the lignification. Eucalyptus grandis seedlings were produced in vitro, and the stem segments explants were used to obtain friable callus. For such, the auxins tested were TDZ, 2,4-D, NAA and IAA. The treatments with 50,0 μM 2,4-D; 3,0 μM TDZ and in the absence of growth re
Publicado em: 2009
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12. Lignificação comparativa de Eucalyptus urophylla S. T. Blake por ferramentas biotecnológicas e polimerização in vitro. / Comparative lignification of Eucalyptus urophylla S.T.Blake by biotechnological tools and polymerization in vitro.
Apesar dos avanços tecnológicos, a compreensão da formação estrutural da lignina ainda é alvo de inúmeras investigações científicas. Esta pesquisa foi realizada com calos de Eucalyptus urophylla S.T. Blake para a produção de lignina. Os calos foram obtidos a partir de explantes de segmentos caulinares desenvolvidos em meios de cultura acrescidos
Publicado em: 2009