Seed germination and seedling vigour of transgenic tobacco (Nicotiana tabacum L.) with increased proline accumulation under osmotic stress

2018 ◽  
Vol 94 (2) ◽  
pp. 220-228 ◽  
Author(s):  
Fabiana de Lima Abrantes ◽  
Alessandra Ferreira Ribas ◽  
Luiz Gonzaga Esteves Vieira ◽  
Nelson Barbosa Machado-Neto ◽  
Ceci Castilho Custódio
Keyword(s):  
Nicotiana Tabacum ◽  
Seed Germination ◽  
Osmotic Stress ◽  
Transgenic Tobacco ◽  
Proline Accumulation ◽  
Seedling Vigour ◽  
Nicotiana Tabacum L

scholarly journals QTL analysis of seed germination traits in tobacco (Nicotiana tabacum L.)

2021 ◽  
Author(s):  
Monika Agacka-Mołdoch ◽  
Mian Abdur Rehman Arif ◽  
Ulrike Lohwasser ◽  
Teresa Doroszewska ◽  
Ramsey S. Lewis ◽  
...  
Keyword(s):  
Nicotiana Tabacum ◽  
Seed Germination ◽  
Doubled Haploid ◽  
Mapping Population ◽  
Area Under The Curve ◽  
Linkage Groups ◽  
Polygenic Control ◽  
Nicotiana Tabacum L ◽  
Controlled Deterioration ◽  
Germination Traits

AbstractGenetic mapping of seed germination traits has been performed with many plant species. In tobacco, however, investigations are rare. In the present study, a bi-parental mapping population consisting of 118 doubled haploid lines and derived from a cross between ‘Beinhart-1000’ and ‘Hicks’ was investigated. Four germination-related traits, total germination (TG), normal germination (NG), time to reach 50% of total germination (T50), and the area under the curve after 200 h of germination (AUC) were considered by examining seeds either untreated or after a moderate controlled deterioration (CD). Quantitative trait loci were found for all traits distributed on 11 out of the 24 linkage groups. It was demonstrated that, as in many other species, germination-related traits are very complex and under polygenic control.

scholarly journals Lead Phytoremediation Potential of Wild Type and Transgenic Tobacco Plants

2021 ◽  
Vol 5 (1) ◽  
pp. 168-182
Author(s):  
Hatice DAGHAN ◽  
Veli UYGUR ◽  
Abdullah EREN
Keyword(s):  
Nicotiana Tabacum ◽  
Transgenic Tobacco ◽  
Transgenic Tobacco Plants ◽  
Wild Type ◽  
Tobacco Plants ◽  
Nicotiana Tabacum L ◽  
Lead Phytoremediation

Genetiği değiştirilmiş bitkiler, kurşunun (Pb) kökten yer üstü kısımlarına translokasyonunu geliştirmek için büyük bir potansiyele sahip olabilir. Transgenik olmayan ( Nicotiana tabacum L. cv. Petit Havana SR1) ve transgenik (p-cV-ChMTII GFP) tütün bitkileri tarafından Pb alımının sağlanması araştırmak için Çin hamsteri metalotiyonin II gezen bir kap deneyi yapıldı . Transgenik ve transgenik olmayan tütün bitkileri, 0, 1000, 2500, 5000 mg Pb kg- 1 ile Pb (NO 3 ) 2 olarak işlenmiş topraklarda yetiştirildi. Kelimede bir büyüme bölümünde 6 hafta boyunca çiçeklenme aşamasına kadar.Bitkilerin büyümesi, klorofil içeriği, mineral besin elementleri ve düşük glutatyon (GSH) bezleri, bitkilerin Pb alım potansiyeli ile birlikte incelenmiştir. Hem transgenik hem de transgenik olmayan bitkiler için Pb uygulamasındaki artışa bağlı olarak yer üstü biyokütle çevrildi aşamalı bir düşüş gözlendi. Yaprak besinlerinin bulaştığı, aşırı Pb işlemlerinden olumsuz etkilenmiştir, bunlardan en büyük düşüşü. Sürgün Pb yüksek derecesi 76.0 mg kg kadar ulaşan -1 transgenik ve 70.9 mg kg -1 transgenik olmayan bitkilerde. Pb alımı, p-cV-ChMTII GFP'nin tütün bitkisine aktarılmasıyla iyileştirildi; ancak, Pb fitoremediasyonunda yeterli değildi. 

Carbon metabolism enzymes and photosynthesis in transgenic tobacco (Nicotiana tabacum L.) having excess phytochrome

Planta ◽  
1991 ◽  
Vol 185 (3) ◽  
Author(s):  
ThomasD. Sharkey ◽  
TerryL. Vassey ◽  
PeterJ. Vanderveer ◽  
RichardD. Vierstra
Keyword(s):  
Nicotiana Tabacum ◽  
Transgenic Tobacco ◽  
Carbon Metabolism ◽  
Nicotiana Tabacum L ◽  
Metabolism Enzymes

scholarly journals Overexpression of chitinase gene with a GC-rich synthetic enhancer in tobacco plant (Nicotiana tabacum L.) Overekspresi gen kitinase dengan enhancer sintetis kaya GC pada tanaman tembakau (Nicotiana tabacum L.)

2016 ◽  
Vol 68 (2) ◽  
Author(s):  
D SANTOSO ◽  
T CHAIDAMSARI ◽  
A BUDIANI ◽  
H MINARSIH ◽  
S DWI UTOMO ◽  
...  
Keyword(s):  
Agrobacterium Tumefaciens ◽  
Nicotiana Tabacum ◽  
Transgenic Tobacco ◽  
Recombinant Dna ◽  
Tobacco Plant ◽  
Control Plant ◽  
Chitinase Activity ◽  
Dot Blot ◽  
Nicotiana Tabacum L ◽  
Hindiii Restriction Site

Ringkasan Perakitan tanaman perkebunan toleran terhadap serangan cendawan patogenik  dilakukan dengan mengoverekspresikan gen penyandi kitinase. Untuk itu elemen DNA peningkat ekspresi (enhancer E52) yang berupa oligonukleotida 52 pb dan kaya kandungan basa purin (GC) disisipkan di ujung 5’ konstruk 35S-chi. Penyisipan E52 tersebut dilakukan secara lebih terarah pada situs ganda HindIII-SalI dari MCS pCAMBIA2301. Melalui situs HindIII yang terletak tepat di ujung 3’ E52, konstruk 35S-chi kemudian disambungkan dengan E52 pada pCAMBIA tersebut. Transformasi DNA rekombinan ke dalam sel tembakau dikerjakan melalui perantaraan Agrobacterium tumefaciens LBA4404. Sel tanaman transgenik     diseleksi    dan  diregenrasi dalam media  yang    mengandung  3%  sukrosa, 0,5 mg/L diregenerasikan pada media   MS   padat  benzilaminopurin   (BAP)  dan  50 mg/L kanamisin. Pada media ini tunas transgenik    tembakau   mulai   terbentuk    setelah 5 minggu penanaman. Analisis  tingkat aktivitas enzimatis menunjukkan bahwa aktivitas kitinase pada tembakau transgenik 40 hingga 80 kali lebih tinggi daripada non-transgenik. Pengujian hibridisasi protein menggunakan antibodi anti-kitinase, dot blot dan western blot, membuktikan bahwa enhancer tersebut dapat meningkatkan ekspresi transgen chi pada tanaman tembakau.Summary Development of estate crops tolerant to pathogenic fungi is conducted by overexpressing chi gene. For this purpose, a synthetic enhancer consisting of 52 base pairs and GC-rich was inserted at immediate 5’ end of a 35S-chi cassette. Insertion of the E52 was directed at HindIII-SalI restriction sites of  the pCAMBIA2301 MCS.  With HindIII restriction site located just after the 3’ end of the E52 sequence, the 35S-chi construct was then ligated with the E52 of the pCAMBIA. Transformation of the resulting recombinant DNA into tobacco cells was mediated by Agrobacterium tumefaciens LBA4404. The transgenic cells were selected and regenerated on a solid MS medium supplemented with 3% sucrose, 0.5 mg/L benzylamino purine (BAP) and 50 mg/L kanamycin. Tobacco   shoots   were   initiated  after 5 weeks inoculation on the selection media. Enzymatic analysis demonstrated that chitinase activity of transgenic tobacco was 40 to 80 folds higher than that of the control plant. Analysis of  enzymatic activity using hybridization with anti-chitinase antibody indicated that the level of chitinase activity in the transgenic tobacco carrying the enhancer is higher than that  without enhancer. These data suggest that the enhancer improved the expression of chi transgene in tobacco. 

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