Starch Synthase
Mostrando 1-12 de 131 artigos, teses e dissertações.
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1. A perfect functional marker for the gene of intermediate amylose content Wx-in in rice (Oryza sativa L.)
Abstract The amylose content (AC) of rice is a key determinant of the grain cooking and eating quality. The Waxy (Wx) gene, which encodes granule-bound starch synthase I (GBSSI), is the major gene controlling AC in rice. The A - C substitution in exon 6 (Ex6A/C) alters the amino acid codon from serine to tyrosine and is associated with intermediate-AC rice (
Crop Breed. Appl. Biotechnol.. Publicado em: 2018-03
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2. Chilling privation during dormancy period and carbohydrate mobilization in Japanese pear trees
The flower bud abortion is one of the main problems that limit commercial pear (Pyrus pyrifolia) production in the southern region of Brazil. Insufficient chilling during the dormancy period is known as the main factor of this problem. One of the hypotheses to explain this problem is that the starch mobilization and carbohydrate fluxes to the buds are impede
Scientia Agricola. Publicado em: 2011-08
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3. Effects of the physiological age of seed potatoes on tuber initiation and starch and dry matter accumulation.
The physiological age of seed potato tubers (Solanum tuberosum L.) modifies several morphological, physiological and agronomic characteristics of the crop. However, there is little evidence on the possible influence of physiological age upon the mechanism involved in tuber initiation and starch accumulation. This study investigated the effects of the physiol
Pesquisa Agropecuaria Brasileira. Publicado em: 2011
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4. Estresse salino e mobilizaÃÃo de reservas cotiledonares durante a germinaÃÃo e estabelecimento da plÃntula de cajueiro anÃo-precoce / Salt stress and reserve mobilization in cotyledons during germination and seedling establishment of precocious-dwarf cashew
This study aimed to obtain basic information on seed germination and seedling establishment of dwarf-precocious cashew (Anacardium occidentale L.) under saline conditions and the relationship between salinity and reserve mobilization during these processes. BRS 189 seeds (cashew nuts) were sown in plastic trays containing vermiculite moistened with distilled
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/02/2009
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5. Expression analysis of a set of genes related to the ripening of bananas and mangoes
During ripening many important physic-chemical changes contribute to fruit quality, and they are precisely determined by gene expression. Specific genes are essential to normal ripening; however, information on gene expression about the majority of tropical fruit, such as bananas and mangoes is limited. In this way, the present study was undertaken with the
Brazilian Journal of Plant Physiology. Publicado em: 2009
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6. Diversidade de seqüência de um gene componente da via biossintética de carotenóides em espécies selvagens e cultivadas de Solanum (Seção Lycopersicon)
Uma estratégia baseada em PCR ("polymerase chain reaction") foi empregada para isolarem-se alelos do gene da ciclase do licopeno específica de cromoplasto (CYCB) em espécies selvagens e domesticadas de tomate [Solanum (Secção Lycopersicon)]. A otimização das condições de reação de PCR permitiu a amplificação de uma seqüência de 1219 dos 1666 p
Brazilian Journal of Plant Physiology. Publicado em: 2007-09
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7. Sucrose metabolism in coffee fruit / Metabolismo da sacarose em frutos de cafe
Since coffee culture productivity is straightly connected to three basic production factors: climate, genetics and physiology, herein some aspects of the carbohydrates metabolism involved in the process of coffee grains filling through its development were analyzed. It is known the carbohydrates composition, mainly the polysaccharides composition of the coff
Publicado em: 2006
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8. Evidence that a 77-kilodalton protein from the starch of pea embryos is an isoform of starch synthase that is both soluble and granule bound.
In this paper we provide further evidence about the nature of a 77-kD starch synthase (SSII) that is both soluble and bound to the starch granules in developing pea (Pisum sativum L.) embryos. Mature SSII gives rise to starch synthase activity when expressed in a strain of Escherichia coli lacking glycogen synthase. In transgenic potatoes (Solanum tuberosum
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9. Identification, cDNA cloning, and gene expression of soluble starch synthase in rice (Oryza sativa L.) immature seeds.
Three forms of soluble starch synthase were resolved by anion-exchange chromatography of soluble extracts from immature rice (Oryza sativa L.) seeds, and each of these forms was further purified by affinity chromatograph. The 55-, 57-, and 57-kD proteins in the three preparations were identified as candidates for soluble starch synthase by western blot analy
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10. Evidence for Independent Genetic Control of the Multiple Forms of Maize Endosperm Branching Enzymes and Starch Synthases 12
Soluble starch synthase and starch-branching enzymes in extracts from kernels of four maize genotypes were compared. Extracts from normal (nonmutant) maize were found to contain two starch synthases and three branching enzyme fractions. The different fractions could be distinguished by chromatographic properties and kinetic properties under various assay con
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11. Sucrose Synthase, Starch Accumulation, and Tomato Fruit Sink Strength.
Contrasting evidence has accumulated regarding the role of acid invertase and sucrose synthase in tomato fruit sink establishment and maintenance. In this work the relationships among the activities of sucrose synthase and acid invertase, Lycopersicon esculentum Mill cv UC-82B fruit growth, and starch accumulation were analyzed in fruit at 0 to 39 d after an
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12. Biochemical Evidence for the Role of the Waxy Protein from Pea (Pisum sativum L.) as a Granule-Bound Starch Synthase.
Proteins were solubilized from starch extracted from developing pea (Pisum sativum L.) embryos and chromatography of these proteins on a Mono-Q column separated two peaks of starch synthase activity. The major activity peak comprised more than 80% of the total activity. This fraction contained only the Waxy protein, as shown by polyacrylamide gel electrophor