کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4555360 1329254 2009 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Relationship of secondary metabolism to growth in oregano (Origanum vulgare L.) shoot cultures under nutritional stress
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک بوم شناسی، تکامل، رفتار و سامانه شناسی
پیش نمایش صفحه اول مقاله
Relationship of secondary metabolism to growth in oregano (Origanum vulgare L.) shoot cultures under nutritional stress
چکیده انگلیسی

Micropropagation of Origanum vulgare L. by shoot buds, as a potential model system for studying carbon skeleton diversion from growth to secondary metabolism as adaptive response to nutrient deficiency, has been performed. In addition, the antioxidant phenolic compounds, produced by shoots under nutritional stress or in response to exogenously added proline, have been studied. Caffeic acid, rosmarinic acid, and lithospermic acid B have been isolated in oregano shoot cultures by reversed-phase high-performance liquid chromatography, and their structures have been elucidated by tandem mass spectrometry. Both nutritional stress, which in turn causes a moderate increase of constitutive free proline, and exogenous proline affect growth and antioxidant phenolic content of oregano shoots, compared to control.The role of proline, and the associated redox cycle, as a form of metabolic signaling based on a transfer of redox potential amongst interacting cell pathways, which in turn elicit phenolic metabolism via stimulated carbon flux through oxidative pentose phosphate pathway, is discussed. Furthermore, the potential use of oregano tissue and callus cultures as a new strategy to enable the production of useful secondary metabolites on a commercial scale is also discussed.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Environmental and Experimental Botany - Volume 65, Issue 1, January 2009, Pages 54–62
نویسندگان
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