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20 hydroxyecdysone/spinacia oleracea
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11 resultados
Evaluation of Spinacia oleracea (L.) for phytodesalination and augmented production of bioactive metabolite, 20-hydroxyecdysone.
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In this study, adaptive features of Spinacia oleracea to different levels of salinity, its use in desalination and production of 20-Hydroxyecdysone were studied. Plants showed survival up to EC 12 dS/m with reduced growth as compared with control. Net photosynthesis rate, transpiration, stomatal
24-epibrassinolide and 20-hydroxyecdysone affect photosynthesis differently in maize and spinach.
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The aim of the work was to examine the effect of brassinosteroid (24-epibrassinolide; 24E) and ecdysteroid (20-hydroxyecdysone; 20E) on various parts of primary photosynthetic processes in maize and spinach. Additionally, the effect of steroids on gaseous exchange, pigment content and biomass
Biosynthesis and accumulation of 20-hydroxyecdysone in individual male and female spinach plants during the reproductive stage.
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The steroid 20-hydroxyecdysone (20E) is a major component of phytoecdysteroid in plants and may play a defensive role against insect pests in higher plants. In spinach, the biosynthesis and accumulation of 20E have been investigated during the vegetative stage; however, these processes have not been
NaCl induced salt adaptive changes and enhanced accumulation of 20-hydroxyecdysone in the in vitro shoot cultures of Spinacia oleracea (L.).
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Spinach (Spinacia oleracea L.) is a vegetable plant with high nutritional properties. In the present work, we studied responses of in vitro shoot cultures to salt stress (0 (control), 100, 200 and 300 mM NaCl) and salt stress-induced accumulation of 20-hydroxyecdysone (20E). Our results revealed
Ecdysteroids in spinach (Spinacia oleracea L.): biosynthesis, transport and regulation of levels.
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Many plant species produce phytoecdysteroids (PEs: i.e. analogues of insect steroid hormones). There is increasing evidence that PEs are used as a chemical defence by plants against non-adapted insects and nematodes. PEs are good candidates for the development of an environmentally safe approach to
Interactions between Spinacia oleracea and Bradysia impatiens: a role for phytoecdysteroids.
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Plant produced insect molting hormones, termed phytoecdysteroids (PEs), are thought to function as plant defenses against insects by acting as either feeding deterrents or through developmental disruption. In spinach (Spinacia oleracea), 20-hydroxyecdysone (20E) concentrations in the roots rapidly
Phytoecdysteroid C2-hydroxylase is microsomal in spinach, Spinacia oleracea L.
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An enzyme involved in the biosynthesis of phytoecdysteroids, the C2-hydroxylase, has been investigated in spinach, Spinacia oleracea. This enzyme is microsomal and its K(m) has been determined using 2-deoxy-20-hydroxyecdysone as substrate (K(m)=3.72 microM). It is much more efficient with
Ecdysteroid-containing food supplements from Cyanotis arachnoidea on the European market: evidence for spinach product counterfeiting.
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Phytoecdysteroids like 20-hydroxyecdysone ("ecdysterone") can exert a mild, non-hormonal anabolic/adaptogenic activity in mammals, and as such, are frequently used in food supplements. Spinach is well-known for its relatively low ecdysteroid content. Cyanotis arachnoidea, a plant native in China, is
Affinity chromatography reveals RuBisCO as an ecdysteroid-binding protein.
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The aim of this work was to isolate plant ecdysteroid-binding proteins using affinity chromatography. Ecdysteroids as insect hormones have been investigated thoroughly but their function and the mechanism of action in plants and other organisms is still unknown although ecdysteroids occur in some
Biosynthesis and distribution of insect-molting hormones in plants--a review.
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Insect-molting hormones, phytoecdysteroids, have been reported to occur in over 100 plant families. Plants, unlike insects, are capable of the biosynthesis of ecdysteroids from mevalonic acid, and in several cases the biosynthesis of phytoecdysteroids was also demonstrated to proceed via sterols.
Phytoecdysteroids: a novel defense against plant-parasitic nematodes.
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The phytoecdysteroid, 20-hydroxyecdysone (20E), is a major molting hormone of invertebrates, possibly including nematodes. As 20E is inducible in spinach, the defensive role against plant-parasitic nematodes was investigated. The effects of direct application on nematodes was assessed by treating
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