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当前位置: 首页 > 文章 > Oligo-carrageenan kappa increases C, N and S assimilation, auxin and gibberellin contents, and growth in Pinus radiata trees 林业研究(英文版) 2015,26 (3)

Position: Home > Articles > Oligo-carrageenan kappa increases C, N and S assimilation, auxin and gibberellin contents, and growth in Pinus radiata trees Journal of Forestry Research 2015,26 (3)

Oligo-carrageenan kappa increases C, N and S assimilation, auxin and gibberellin contents, and growth in Pinus radiata trees

作者：

Silvia Saucedo;Rodrigo A. Contreras;Alejandra Moenn

单位：

University of Santiago of Chile, Santiago, Chile;Universidad Técnica Estatal de Quevedo;University of Santiago of Chile, Santiago, Chil; University of Santiago of Chile

关键词：

Auxin;Basal metabolism;C, N and S assimilation;Gibberellin;Oligo-carrageenan kappa;Pinus radiata;METABOLIS

摘要：

Oligo-carrageenans (OCs) obtained from pure carrageenans extracted from marine red algae stimulate growth by enhancing photosynthesis and basal metabolism in tobacco plants and Eucalyptus trees. In addition, OCs stimulate secondary metabolism, increasing the level of metabolites involved in defense against pathogens. In this work, we analyzed the effect of OC kappa on the increase in height, in activities of basal metabolism enzymes involved in carbon, nitrogen and sulphur assimilation, ribulose 1,5 biphosphate carboxylase/oxygenase (rubisco), glutamate dehydrogenase (GDH) and O-acetylserine thiol-lyase (OASTL), and in the level of growth-promoting hormones, the auxin indole acetic acid (IAA) and the gibberellin GA(3), in pine (Pinus radiata) trees treated with OC kappa at concentrations of 1 and 5 mg mL(-1) and cultivated for 9 months without additional treatment. Pines treated with OC kappa at 1 mg mL(-1) showed a similar increase in height but displayed a higher increased in total chlorophyll, activities of rubisco, GDH and OASTL and level of IAA and GA(3) than those treated with OC kappa at 5 mg mL(-1). Thus, OC kappa stimulates growth and basal metabolism and increases the level of growth-promoting hormones in pine trees, mainly at 1 mg mL(-1).

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Oligo-carrageenan kappa increases C, N and S assimilation, auxin and gibberellin contents, and growth in Pinus radiata trees

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