scholarly journals Characterization of Phytophthora nicotianae isolates from tobacco plants (Nicotiana tabacum) in Colombia

Revista CERES ◽  
2022 ◽  
Vol 69 (1) ◽  
pp. 78-91
Author(s):  
Diana Marcela Vanegas ◽  
Rafael Angel Navarro ◽  
Lucia Alfanador ◽  
Jaime Andres Gutierrez ◽  
Juan Gonzalo Morales ◽  
...  
Keyword(s):  
Nicotiana Tabacum ◽  
Phytophthora Nicotianae ◽  
Tobacco Plants

Effect of interaction between Phytophthora nicotianae and Meloidogyne spp. on the productivity and quality of tobacco plants (Nicotiana tabacum)

Nematology ◽  
2020 ◽  
Vol 22 (10) ◽  
pp. 1179-1192
Author(s):  
Diana M. Vanegas-Villa ◽  
Rafael A. Navarro-Álzate ◽  
Lucia Afanador-Kafuri ◽  
Jaime A. Gutiérrez-Monsalve ◽  
Juan G. Morales-Osorio ◽  
...  
Keyword(s):  
Nicotiana Tabacum ◽  
Phytophthora Nicotianae ◽  
Parasitic Nematodes ◽  
Dependent Manner ◽  
Tobacco Plants ◽  
Black Shank ◽  
Leaf Quality ◽  
Physical And Chemical Quality ◽  
Physical And Chemical

Summary Black shank disease caused by Phytophthora nicotianae is the most devastating pathology in tobacco (Nicotiana tabacum). In Colombia, an increase in the severity of P. nicotianae has been reported when parasitic nematodes are active in tobacco plants. The main objective of this study was to determine the pathogenicity, leaf quality and interaction between P. nicotianae (Races 0 and 1) with Meloidogyne spp. on tobacco plants in samples collected in 15 farms of Colombia. To quantify the interaction between both pathogens, variables such as plant survival, index of pathogenicity, and chemical and physical quality of the leaves were measured. Within a confidence level of 95% there is evidence of a positive synergistic effect between Meloidogyne incognita, M. javanica and P. nicotianae (Races 0 and 1) in a variety-dependent manner. For ‘ICA Servita’ the variables of index of pathogenicity, of root-knots and fresh weight of root, reduced the leaf price because of the interaction. For ‘K346’, Race 0 of P. nicotianae apparently reduced the pathogenicity of M. javanica in contrast to P. nicotianae Race 1. In addition, ‘ICA Servita’ and ‘K346’ showed susceptibility to nematodes. At the end of the harvest of ‘ICA Servita’, the interaction caused a considerable decrease in the physical and chemical quality of tobacco leaves, resulting in lower weight and number of leaves, affecting the price of tobacco in the market with reductions of more than 50%. Plant mortality of ‘ICA Servita’ and ‘K346’ was 50 and 60%, respectively, in interactions with both pathogens.

On Two New Nematodes (Aphelenchoidea) from Tobacco Roots in India

1970 ◽  
Vol 44 (3-4) ◽  
pp. 323-328 ◽  
Author(s):  
R. S. Tandon ◽  
S. P. Singh
Keyword(s):  
New Species ◽  
Nicotiana Tabacum ◽  
Hot Water ◽  
Tobacco Plants ◽  
Alcohol Mixture ◽  
Two New Species ◽  
Tobacco Roots ◽  
Pure Glycerine

Two new species belonging to two different families of the super-family Aphelenchoidea are described. The material was obtained from the roots of tobacco plants, Nicotiana tabacum.The worms were killed by hot water, fixed in F.A.A. solution, cleared in 1% glycerine alcohol mixture and mounted in pure glycerine.

Genetic characterization of Phytophthora nicotianae by the analysis of polymorphic regions of the mitochondrial DNA

2011 ◽  
Vol 115 (4-5) ◽  
pp. 432-442 ◽  
Author(s):  
Marco Antonio Mammella ◽  
Santa Olga Cacciola ◽  
Frank Martin ◽  
Leonardo Schena
Keyword(s):  
Mitochondrial Dna ◽  
Genetic Characterization ◽  
Phytophthora Nicotianae

Characterization of a new type of molybdenum cofactor-mutant in cell cultures of Nicotiana tabacum

1984 ◽  
Vol 195 (1-2) ◽  
pp. 186-189 ◽  
Author(s):  
Ralf R. Mendel ◽  
Roger J. Buchanan ◽  
John L. Wray
Keyword(s):  
Nicotiana Tabacum ◽  
Cell Cultures ◽  
Molybdenum Cofactor ◽  
New Type

scholarly journals Channeling of Eukaryotic Diacylglycerol into the Biosynthesis of Plastidial Phosphatidylglycerol

2006 ◽  
Vol 282 (7) ◽  
pp. 4613-4625 ◽  
Author(s):  
Markus Fritz ◽  
Heiko Lokstein ◽  
Dieter Hackenberg ◽  
Ruth Welti ◽  
Mary Roth ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Double Bond ◽  
Transgenic Plants ◽  
Phosphatidic Acid ◽  
Lipid Analysis ◽  
Photosynthetic Apparatus ◽  
Hexadecenoic Acid ◽  
Transgenic Tobacco Plants ◽  
Tobacco Plants

Plastidial glycolipids contain diacylglycerol (DAG) moieties, which are either synthesized in the plastids (prokaryotic lipids) or originate in the extraplastidial compartment (eukaryotic lipids) necessitating their transfer into plastids. In contrast, the only phospholipid in plastids, phosphatidylglycerol (PG), contains exclusively prokaryotic DAG backbones. PG contributes in several ways to the functions of chloroplasts, but it is not known to what extent its prokaryotic nature is required to fulfill these tasks. As a first step toward answering this question, we produced transgenic tobacco plants that contain eukaryotic PG in thylakoids. This was achieved by targeting a bacterial DAG kinase into chloroplasts in which the heterologous enzyme was also incorporated into the envelope fraction. From lipid analysis we conclude that the DAG kinase phosphorylated eukaryotic DAG forming phosphatidic acid, which was converted into PG. This resulted in PG with 2–3 times more eukaryotic than prokaryotic DAG backbones. In the newly formed PG the unique Δ3-trans-double bond, normally confined to 3-trans-hexadecenoic acid, was also found in sn-2-bound cis-unsaturated C18 fatty acids. In addition, a lipidomics technique allowed the characterization of phosphatidic acid, which is assumed to be derived from eukaryotic DAG precursors in the chloroplasts of the transgenic plants. The differences in lipid composition had only minor effects on measured functions of the photosynthetic apparatus, whereas the most obvious phenotype was a significant reduction in growth.

Identification and characterization of microRNAs and their target genes in tobacco (Nicotiana tabacum)

Planta ◽  
2010 ◽  
Vol 232 (6) ◽  
pp. 1289-1308 ◽  
Author(s):  
Taylor P. Frazier ◽  
Fuliang Xie ◽  
Andrew Freistaedter ◽  
Caitlin E. Burklew ◽  
Baohong Zhang
Keyword(s):  
Nicotiana Tabacum ◽  
Target Genes ◽  
Identification And Characterization

Isolation and functional characterization of a novel FLOWERING LOCUS T homolog (NtFT5) in Nicotiana tabacum

2018 ◽  
Vol 231 ◽  
pp. 393-401 ◽  
Author(s):  
Genhong Wang ◽  
Pei Wang ◽  
Yulong Gao ◽  
Yueyue Li ◽  
Lei Wu ◽  
...  
Keyword(s):  
Nicotiana Tabacum ◽  
Functional Characterization ◽  
Flowering Locus T ◽  
Flowering Locus

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. 

Phytophthora nicotianae. [Descriptions of Fungi and Bacteria].

1994 ◽  
Author(s):  
G. Hall
Keyword(s):  
Surface Water ◽  
Nicotiana Tabacum ◽  
Geographical Distribution ◽  
Root Rot ◽  
World Wide ◽  
Phytophthora Nicotianae ◽  
Fruit Rot ◽  
Tomato Root ◽  
Ornamental Crops ◽  
The Tropics

Abstract A description is provided for Phytophthora nicotianae. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Principally Lycopersicon esculentum, Nicotiana tabacum, Capsicum annuum and Citrus sp. A very large number of other agricultural and ornamental crops, both temperate and tropical, are also affected, including avocado, strawberry, pineapple, papaya, guava, eggplant and durian. DISEASE: Blackshank of tobacco, buckeye of tomato, root and fruit rot of capsicum, root rot of citrus. GEOGRAPHICAL DISTRIBUTION: World-wide, but particularly common in the tropics and sub-tropics. TRANSMISSION: By zoospores in surface water and rainsplash. Chlamydospores (and oospores, when formed) act as perennating structures.

Isolation and Characterization of UDP-glucosyltransferase in the Cultured Cells of Nicotiana tabacum

Heterocycles ◽  
2002 ◽  
Vol 56 (1-2) ◽  
pp. 509
Author(s):  
Toshifumi Hirata ◽  
Shin-ya Yamane ◽  
Kei Shimoda ◽  
Takeshi Fujino ◽  
Shinji Ohta
Keyword(s):  
Nicotiana Tabacum ◽  
Cultured Cells ◽  
Isolation And Characterization
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