نتایج جستجو برای: tobacco cells

تعداد نتایج: 1433845  

Journal: :Plant physiology 2009
Tsubasa Shoji Koji Inai Yoshiaki Yazaki Yasutaka Sato Hisabumi Takase Nobukazu Shitan Kazufumi Yazaki Yumi Goto Kiminori Toyooka Ken Matsuoka Takashi Hashimoto

Nicotine is a major alkaloid accumulating in the vacuole of tobacco (Nicotiana tabacum), but the transporters involved in the vacuolar sequestration are not known. We here report that tobacco genes (NtMATE1 and NtMATE2) encoding transporters of the multidrug and toxic compound extrusion (MATE) family are coordinately regulated with structural genes for nicotine biosynthesis in the root, with re...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 1989
P Masson N V Fedoroff

Maize Suppressor-mutator (Spm) transposable elements have been introduced into tobacco cells and a visual assay for Spm activity has been developed using a bacterial beta-glucuronidase gene. The Spm element is mobile in tobacco and can trans-activate excision of a transposition-defective Spm (dSpm) element either from a different site on the same transforming Ti plasmid or from a second plasmid...

Journal: :Plant physiology 1975
J Behrend R I Mateles

Certain amino acids inhibit growth of tobacco (Nicotiana tabacum L. var. xanthi), tomato (Lycopersicon esculentum) carrot (Daucus carota), and soybean (Glycerine max L. co. Mandarin) cell cultures when nitrate or urea are the nitrogen sources but not when ammonia is the nitrogen source. These amino acids also inhibit development of nitrate reductase activity (NADH:nitrate oxidoreductase EC 1.6....

Journal: :American journal of physiology. Heart and circulatory physiology 2001
M Vayssier-Taussat T Camilli Y Aron C Meplan P Hainaut B S Polla B Weksler

Smoking is an important risk factor for atherosclerosis. We compared tobacco smoke filtrate with benzo[a]pyrene (a prominent xenobiotic component of tobacco smoke) for the capacity to induce stress proteins and cause cell death in human monocytes and vascular endothelial cells, two cell types that are involved in the formation of atherosclerotic lesions. Exposure to freshly prepared filtrates o...

Journal: Addiction and Health 2011
Prateek Sudhakar Bobhate Saurabh Ram BihariLal Shrivastava

Background: Tobacco use is a major cause of preventable death and disease in India. A nationally representative case-control study of smoking in India (2008) revealed that only 2% of smokers had spontaneously quit. This study was undertaken to assess tobacco quit rates among the youth in an urban health center and to determine barriers in quitting tobacco use. Methods: This cross sectional stud...

Journal: :Journal of plant physiology 2014
Daniela Seifertová Petr Skůpa Jan Rychtář Martina Laňková Markéta Pařezová Petre I Dobrev Klára Hoyerová Jan Petrášek Eva Zažímalová

Polar auxin transport is a crucial process for control and coordination of plant development. Studies of auxin transport through plant tissues and organs showed that auxin is transported by a combination of phloem flow and the active, carrier-mediated cell-to-cell transport. Since plant organs and even tissues are too complex for determination of the kinetics of carrier-mediated auxin uptake an...

Journal: :Plant physiology 1998
Chapman Tripathy Venables Desouza

Recently, the biosynthesis of an unusual membrane phospholipid, N-acylphosphatidylethanolamine (NAPE), was found to increase in elicitor-treated tobacco (Nicotiana tabacum L.) cells (K.D. Chapman, A. Conyers-Hackson, R.A. Moreau, S. Tripathy [1995] Physiol Plant 95: 120-126). Here we report that before induction of NAPE biosynthesis, N-acylethanolamine (NAE) is released from NAPE in cultured to...

Journal: :Cancer prevention research 2008
Trevor M Penning Caryn Lerman

Tobacco use is the greatest preventable cause of cancer in the United States, accounting for almost one third of all cancerrelated deaths and 90% of deaths from lung cancer. Despite widespread knowledge of these risks, tobacco use prevalence rates are 20% in the United States and up to 30% to 50% in the developing world (1, 2). Nicotine, the addictive chemical in tobacco, produces a biological ...

Journal: :caspian journal of environmental sciences 2007
n. chaudhary

three bacteria from a tobacco industry effluent and one from a sewage sample were isolated on a medium comprising of 1% tobacco powder as sole source of nutrients. bacteria isolated from the industrial waste water were identified as bacillus cereus, b. alvei and b. circulans. while, lactobacillus sp. was isolated from the sewage sample. the bacteria were optimized for various growth conditions ...

Journal: :progress in biological sciences 2011
zahra zamanzedeh ali akbar ehsanpour

transformation of plants using agrabacterium rhizogenes may affect secondary metabolite production as well as morphological changes. in this study, t-dna from ri plasmid in a. rhizogenes carrying pri15834-prt35s-gus was introduced into tobacco leaf segments to initiate development of transformed hairy roots. plant regeneration from transgenic roots used ms medium, and plants regenerated fro...

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