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Approches cellulaires et moléculaires de la gestion des réserves chez l’huître, Crassostrea gigas (Thunberg, 1793). Suivi saisonnier du métabolisme énergétique et effet du niveau trophique sur la mise en réserve ArchiMer
Hanquet, Anne-caroline.
In the Pacific oyster, Crassostrea gigas, the energy necessary for general metabolism and gametogenesis is mainly provided by the glycogen stored in the vesicular cells. The first level of glycogen metabolism control is the entrance of glucose into cells. The monitoring of the uptake capacity of [U-14C] D-glucose revealed the existence of a saturable component with kinetic constants: Km = 0.71 mM ; Vmax = 0.22 nmol/h/106cells. The use of inhibitors has revealed the presence of carriers belonged to GLuT and SGLT types. A follow-up showed a seasonal variation of the uptake capacity and incorporation of glucose into glycogen, and a high expression of SGLT during mobilization of glycogen and gametes maturation. A bioassay in a controlled rearing system has...
Tipo: Text Palavras-chave: Crassostrea gigas; Glucides métabolisme; Glucose; Reproduction; Cryoconservation; Crassostrea gigas; Carbohydrate metabolism; Glucose; Reproduction; Cryoconservation.
Ano: 2009 URL: http://archimer.ifremer.fr/doc/00013/12399/9185.pdf
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Carbohydrate metabolism and metabolic disorders in horses R. Bras. Zootec.
Hoffman,Rhonda M..
Horses evolved consuming primarily fermentable forage carbohydrates, but forage diets have been traditionally supplemented with grain meals rich in starch and sugar in order to provide additional calories, protein and micronutrients. Starch and sugar are important for performance horses, but the consumption starch-rich meals may cause equine digestive and metabolic disorders. The critical capacity for preileal starch digestibility appears to be 0.35 to 0.4% but may be as little, depending on the source of starch. Small intestinal absorption of simple sugars is limited by the activity and expression of two classes of glucose carrier proteins, which are affected by chronic intake of hydrolyzable carbohydrate but may be sluggish to respond to abrupt changes...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Carbohydrate metabolism; Glucose; Horse; Insulin resistance.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982009001300027
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Resistance breeding of common bean shapes the physiology of the rhizosphere microbiome. Repositório Alice
MENDES, L. W.; CHAVES, M. G. de; FONSECA, M. de C.; MENDES, R.; RAAIJMAKERS, J. M.; TSAI, S. M..
Abstract: The taxonomically diverse rhizosphere microbiome contributes to plant nutrition, growth and health, including protection against soil-borne pathogens. We previously showed that breeding for Fusarium-resistance in common bean changed the rhizosphere microbiome composition and functioning. Here, we assessed the impact of Fusarium-resistance breeding in common bean on microbiome physiology. Combined with metatranscriptome data, community-level physiological profiling by Biolog EcoPlate analyses revealed that the rhizosphere microbiome of the Fusarium-resistant accession was distinctly different from that of the Fusarium-susceptible accession, with higher consumption of amino acids and amines, higher metabolism of xylanase and sialidase, and higher...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Plant-microbe interactions; Metatranscriptome; Biolog EcoPlate; Nutrientmetabolism; Resistome; Feijão; Resistência; Microbiologia do Solo; População Microbiana; Soil-plant interactions; Beans; Disease resistance; Microbiome; Carbohydrate metabolism.
Ano: 2019 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1115347
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Temporal variation in sugar exudation rate of hydroponically grown Pusa Basmati 1 at seedling stage International Rice Research Institute
Ghosh, S.; Majumdar, D..
p.46-47
Palavras-chave: Carbohydrate metabolism; Correlated traits; Correlation; Sugars; Hydroponics; Temporal variation.
Ano: 2003 URL: http://hdl.handle.net/123456789/1252
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影響碳水化合物自玉米果穗軸轉移至子粒因素之研究 3. 果穗上、下位子粒於充實期間之醣類濃度與代謝酵素活性變化 Taiwan Agricultural Research Institute
林淑雰; 劉大江; S. F. Lin; D. J. Liu.
[[abstract]]本試驗以單雜交玉米臺351號與臺農育365號為材料,兩者具相同母本及不同父本,且後者子粒充實性優於前者,於1986及1987年秋作進行田間試驗,在吐絲後連續針對果穗上位(自穗基算起之80~90%長度)及下位(20~30%)子粒與穗軸髓部組織取樣,分析糖類組成及數個與蔗糖代謝及澱粉合成有關酵素之活性,以瞭解基因型間與著生部位間子粒充實性差異的原因,供為進一步探討碳水化合物自玉米穗軸轉移至子粒因素研究之基礎。子粒葡萄糖濃度自吐絲後7日(7 DAS)起快速下降,蔗糖與可溶性糖濃度則以13~20 DAS最高,但除蔗糖外,子粒充實初期之糖類組成均不足以說明充實能力或速率間的差異。上位子粒之sucrose synthase與ADPG-PPase活性多以臺農育365號較高,尤以後者之差異最為明顯,且上位子粒之活性均低於下位子粒,但由於各部位子粒兩個酵素的活性遠超過因應子粒充實速率的需要,尚難定論與影響子粒充實的機制有關。吐絲後初期上、下位穗軸髓部的澱粉濃度高達46.7與29.4%,TNC(total nonstructural carbohydrates)濃度亦高達89.9與77.6%,其後雖然下降,但均以上位髓部較高,成熟期髓部TNC濃度維持於20%以上,顯示碳水化合物可順利供應至穗軸,而由穗軸轉移至子粒的過程最可能影響子粒充實性狀。本試驗亦分析果穗髓部sucrose synthase、ADPG-PPase與invertase活性,認為除對吐絲後初期之澱粉累積具重要性外,穗軸三個酵素對碳水化合物轉運及子粒充實並不具有特殊意義。 Corn hybrids Tainung 351 (TNG 351) and Tainung Yu 365 (TNGY 365) were used as...
Palavras-chave: 玉米; 子粒充實; 醣類代謝; 酵素活性 Corn (Zea mays L.); Kernel filling; Carbohydrate metabolism; Enzyme activity [[classification]]6.
Ano: 1993
Registros recuperados: 5
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