Chloroplasts
Mostrando 1-12 de 1671 artigos, teses e dissertações.
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1. Influence of humus on chromium absorption by coffee seedlings grown on substrate containing tannery sludge
ABSTRACT Chromium is present in the tannery sludges worldwide making it a problem for agriculture. This study aimed to evaluate whether humus functions as a chromium stabilizing agent when using tannery sludge in the substrate of conilon coffee seedlings (Coffea canephora) and to determine what effects there are on leaf development and anatomy. Treatments co
Revista Ceres. Publicado em: 2023
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2. A Young Seedling Stripe2 phenotype in rice is caused by mutation of a chloroplast-localized nucleoside diphosphate kinase 2 required for chloroplast biogenesis
Abstract Chloroplast development and chlorophyll (Chl) biosynthesis in plants are regulated by many genes, but the underlying molecular mechanisms remain largely elusive. We isolated a rice mutant named yss2 (young seedling stripe2) with a striated seedling phenotype beginning from leaf 2 of delayed plant growth. The mutant developed normal green leaves from
Genet. Mol. Biol.. Publicado em: 31/08/2017
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3. Salt stress affects mRNA editing in soybean chloroplasts
Abstract Soybean, a crop known by its economic and nutritional importance, has been the subject of several studies that assess the impact and the effective plant responses to abiotic stresses. Salt stress is one of the main environmental stresses and negatively impacts crop growth and yield. In this work, the RNA editing process in the chloroplast of soybean
Genet. Mol. Biol.. Publicado em: 02/03/2017
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4. An Overview About Ultrastructure of Kranz Anatomy in Cyperaceae (Poales)
Abstract An overview about ultrastructure of Kranz anatomy in Cyperaceae (Poales) - The ultrastructure of the Kranz tissues in Cyperaceae species with the four types of Kranz anatomy (chlorocyperoid, eleocharoid, fimbristyloid and rhynchosporoid) was studied and compared with species already described in the literature, with the goal verifying the occurrence
Rodriguésia. Publicado em: 2015-06
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5. Effects of powdery mildew infection on chloroplast and mitochondrial functions in rubber tree
Powdery mildew (Oidium heveae Steinm.) is one of the most important leaf diseases in rubber tree (Hevea brasiliensis). However, physiological and molecular processes associated with the Hevea-powdery mildew interaction are still unclear. In this study, effects of powdery mildew infection on the mitochondrial and chloroplast functions in rubber tree were comp
Trop. plant pathol.. Publicado em: 2014-06
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6. Enhanced biosynthesis of quercetin occurs as A photoprotective measure in Lycopersicon esculentum mill. under Acute UV-B exposure
Lycopersicon esculentum respond to UV-B by enhanced synthesis of flavonoid quercetin, a strong antioxidant that helps the plants to well acclimatize to UV-B stress. Three weeks old plants of L. esculentum were subjected to acute UV-B irradiation for 20, 40 and 60 minutes daily until 28 days and analyzed for the morphological and biochemical changes. UV-B exp
Braz. arch. biol. technol.. Publicado em: 2014-06
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7. Rootstocks induce contrasting photosynthetic responses of orange plants to low night temperature without affecting the antioxidant metabolism
Low temperatures negatively impact the metabolism of orange trees, and the extent of damage can be influenced by the rootstock. We evaluated the effects of low nocturnal temperatures on Valencia orange scions grafted on Rangpur lime or Swingle citrumelo rootstocks. We exposed six-month-old plants to night temperatures of 20ºC and 8ºC under controlled condi
Theor. Exp. Plant Physiol.. Publicado em: 2013
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8. Plant responses to stresses: role of ascorbate peroxidase in the antioxidant protection
When plants are exposed to stressful environmental conditions, the production of Reactive Oxygen Species (ROS) increases and can cause significant damage to the cells. Antioxidant defenses, which can detoxify ROS, are present in plants. A major hydrogen peroxide detoxifying system in plant cells is the ascorbate-glutathione cycle, in which, ascorbate peroxid
Genet. Mol. Biol.. Publicado em: 2012
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9. Caracterização de determinantes genéticos envolvidos na qualidade industrial e nutricional do fruto de tomate / Characterization of genetic determinants involved in industrial and nutritional quality of tomato fruit
This thesis addresses tomato fruit metabolism analysis by using three complementary approaches: i) the identification of candidate genes co-located with QTL previously described from metabolic profiles of S. lycopersicum (cv. M82) and S. pennellii introgressed lines, associated with industrial and nutritional quality traits; ii) the structural analyses of th
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 11/08/2011
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10. Structural and ecophysiological alterations of the water hyacinth [Eichhornia crassipes (Mart.) Solms] due to anthropogenic stress in Brazilian rivers
In this work, the structural and ecophysiological alterations (chlorophyll a fluorescence and photosynthetic pigments), and quantification of Cr, Pb and Zn in the leaf limb, petiole and younger and older roots of water hyacinth from the lower, medium and upper Paraíba do Sul river (PSR) and Imbé river were evaluated. The plants from the medium and upper PS
Brazilian Archives of Biology and Technology. Publicado em: 2011-10
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11. Identificação de interatores putativos envolvidos na localização de proteínas de duplo direcionamento em Arabidopsis thaliana / Identification of putative interactors involved in the localization of dual-targeted proteins in Arabidopsis thaliana
Most organellar proteins are nuclear encoded, synthesized in the cytosol and then targeted to their destination. Specific subcellular targeting is conducted by a complex machinery for the specific localization of the proteins, which includes targeting sequences, cytosolic proteins and specific organelar receptors. However, little is known about the process t
Publicado em: 2011
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12. Estudo do direcionamento das proteases FtsH plastidiais às membranas dos tilacóides / Study of plastidial FtsH proteases targeting to thylakoid membranes
O complexo FtsH em Arabidopsis, presente nos tilacóides, é formado pelas subunidades FtsH1/FtsH5 (tipo A) e FtsH2/FtsH8 (tipo B). Os tipos A e B apresentam grande identidade em seus domínios maduros, porém nenhuma similaridade é observada na região amino-terminal do peptídeo de trânsito. Em um experimento de importação em cloroplastos isolados, Fts
Publicado em: 2011