Vascular Cambium
Mostrando 1-12 de 21 artigos, teses e dissertações.
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1. Mini-incubators improve the adventitious rooting performance of Corymbia and Eucalyptus microcuttings according to the environment in which they are conditioned
ABSTRACT We addressed a major challenge in the in vitro clonal propagation of Corymbia citriodora, Eucalyptus urophylla and E. benthamii by using an ex vitro adventitious rooting strategy in a mini-incubator. Mini-incubators were placed in four environments for rooting. A shade house with no fogging system and a greenhouse with no ventilation but with a fogg
An. Acad. Bras. Ciênc.. Publicado em: 16/10/2017
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2. Crescimento e idade de cinco espécies arbóreas do Morro Santa Cruz, Corumbá-MS
Ring analysis was carried on five tree species in a semi-deciduous forest of the Morraria Santa Cruz, Corumba-MS. The following questions had been proposals: (1) Is it possible to know the age of Nectandra cissiflora, Pouteria torta, Coussarea hydrangeaefolia, Guarea guidonea and Luehea grandiflora through the counting of growth rings? (2) Which is the growt
Publicado em: 2008
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3. Anéis de crescimento de Araucaria angustifolia (Bertol.) O. Kuntze : bases de dendroecologia em ecossistemas subtropicais montanos no Brasil / Growth rings of Araucaria angustifolia (Bertol.) O. Kuntze : fundamentals of dendroecology in subtropical moutain ecosystems in Brazil
Determinadas espécies arbóreas apresentam ciclos anuais de crescimento e dormência, registrados no lenho por conspícuas estruturas anatômicas – os anéis de crescimento. Nessas árvores pode-se determinar a idade e taxas de crescimento, com resolução calendária anual, através da análise temporal dos anéis de crescimento (dendrocronologia), bem c
Publicado em: 2008
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4. Crecimiento secundario inusual en raíz principal de Pfaffia gnaphalioides (L. Fil.) Mart. (Amaranthaceae)
Pfaffia roots have been commercialized as "brazilian ginseng" and crude extracts of Pfaffia glomerata roots have analgesic and disinflamatory activity. Pfaffia gnaphalioides is a perennial herb and grows in southern Córdoba, Argentina. The objective of this work is to analyze root systems in Pfaffia gnaphalioides. Growth of above and belowground organs was
Acta Botanica Brasilica. Publicado em: 2007-03
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5. Caracterização anatômica da organogênese in vitro e transformação genética via Agrobacterium tumefaciens em Citrus sp. / Anatomical analysis of in vitro organogenesis and Agrobacterium tumefaciens-mediated transformation in Citrus sp.
Genetic transformation has been more frequently associated with conventional genetic breeding programs of different species. It allows for the introduction of exogenous gene(s) into the plant genome, with the possibility of altering specific characteristics. Thus, it can be an important tool for Citrus conventional breeding programs, which present several li
Publicado em: 2002
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6. Alcohol Dehydrogenase and Ethanol in the Stems of Trees 1: Evidence for Anaerobic Metabolism in the Vascular Cambium
Anaerobic fermentation in plants is usually thought to be a transient phenomenon, brought about by environmental limitations to oxygen availability, or by structural constraints to oxygen transport. The vascular cambium of trees is separated from the air by the outer bark and secondary phloem, and we hypothesized that the cambium may experience sufficient hy
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7. The Xylem and Phloem Transcriptomes from Secondary Tissues of the Arabidopsis Root-Hypocotyl1[w]
The growth of secondary xylem and phloem depends on the division of cells in the vascular cambium and results in an increase in the diameter of the root and stem. Very little is known about the genetic mechanisms that control cambial activity and the differentiation of secondary xylem and phloem cell types. To begin to identify new genes required for vascula
American Society of Plant Biologists.
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8. CHEMICAL CONTROL OF VASCULAR CAMBIUM INITIATION IN ISOLATED RADISH ROOTS*
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9. MicroRNA-Directed Cleavage of Nicotiana sylvestris PHAVOLUTA mRNA Regulates the Vascular Cambium and Structure of Apical Meristems
Leaf initiation in the peripheral zone of the shoot apical meristem involves a transition to determinate cell fate, but indeterminacy is maintained in the vascular cambium, a tissue critical to the continuous growth of vascular tissue in leaves and stems. We show that the orientation of cambial growth is regulated by microRNA (miRNA)-directed cleavage of mRN
American Society of Plant Biologists.
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10. A novel two-component hybrid molecule regulates vascular morphogenesis of the Arabidopsis root
The developmental ontogeny of the vascular system (consisting of xylem, phloem and [pro]cambium) is poorly understood despite its central role in plant physiology. We show that in the Arabidopsis root meristem, xylem cell lineages are specified early, whereas phloem and procambium are established through a set of asymmetric cell divisions. These divisions re
Cold Spring Harbor Laboratory Press.
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11. Auxin as a positional signal in pattern formation in plants.
By using a novel, extremely sensitive and specific gas chromatography-mass spectrometry technique we demonstrate in Pinus sylvestris (L.) trees the existence of a steep radial concentration gradient of the endogenous auxin, indole-3-acetic acid, over the lateral meristem responsible for the bulk of plant secondary growth, the vascular cambium. This is the fi
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12. The Histidine Kinases CYTOKININ-INDEPENDENT1 and ARABIDOPSIS HISTIDINE KINASE2 and 3 Regulate Vascular Tissue Development in Arabidopsis Shoots[W]
The development and activity of the procambium and cambium, which ensure vascular tissue formation, is critical for overall plant architecture and growth. However, little is known about the molecular factors affecting the activity of vascular meristems and vascular tissue formation. Here, we show that the His kinase CYTOKININ-INDEPENDENT1 (CKI1) and the cyto
American Society of Plant Biologists.