نتایج جستجو برای: p nigra l
تعداد نتایج: 1764707 فیلتر نتایج به سال:
در این مطالعه برای بررسی تنوع ژنتیکی بین 39 کلن صنوبر ((populus l. متعلق به چهار گونه p.deltoides, p. nigra, p.alba و p.euramericana از نشانگرهای srap و issr استفاده شد. نمونه های گیاهی از کلکسیون پایه ی مادری صنوبر در مرکز تحقیقات البرز وابسته به موسسه ی تحقیقات جنگل ها و مراتع جمع آوری شدند. در مجموع از 11 ترکیب پرایمری نشانگر srap، 42 باند و از 7 پرایمر issr، 81 باند تکثیر شد. به طور متوسط ه...
(+)-Amphetamine sulphate infused directly into the substantia nigra, pars compacta, at low rates and in low volumes and concentrations, produces a marked and prolonged inhibition of neuronal activity. This effect was significantly reduced or abolished following (+/-)-alphamethyl-p-tyrosine pretreatment or following electrolytic lesions in the diencephalon anterior to the substantia nigra. These...
L-DOPA-induced dyskinesia is a troublesome complication of L-DOPA pharmacotherapy of Parkinson's disease and has been associated with disturbed brain opioid transmission. However, so far the results of clinical and preclinical studies on the effects of opioids agonists and antagonists have been contradictory at best. Prodynorphin mRNA levels correlate well with the severity of dyskinesia in ani...
Little is known about the variability of response to heavy metal stress within tree species, although it could be a key for a better understanding of tolerance mechanisms and for breeding. The aim of the present study was to characterize the natural variation of response to cadmium (Cd) in Populus nigra L. in order to understand the mechanisms of Cd tolerance. For that, two P. nigra genotypes, ...
Liquid column chromatography, planar chromatography (TLC) on modified and unmodified silica layers, reversed-phase high-pressure liquid chromatography (HPLC), as well as ESI-TOF MS and 1H-NMR have been used for separation, purification and identification of phenolic acids in the barks of Sambucus nigra and Viburnum opulus (Caprifoliaceae). By the use of these procedures three cinnamic acid deri...
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