scholarly journals Modified Bean Seed Protein Phaseolin Did Not Accumulate Stably in Transgenic Tobacco Seeds after Methionine Enhancement Mutations

2015 ◽  
Vol 06 (05) ◽  
pp. 640-650 ◽  
Author(s):  
Eric Lasserre ◽  
T. S. Ko ◽  
John M. Dyer ◽  
Norimoto Murai
2005 ◽  
Vol 15 (4) ◽  
pp. 361-364 ◽  
Author(s):  
Ka Leung Fung ◽  
Yin Fun Yim ◽  
Yu Chung Tse ◽  
Yansong Miao ◽  
Samuel S.M. Sun ◽  
...  

Seeds that store proteins in protein storage vacuoles are attractive bioreactors for producing and storing large amounts of pharmaceutical proteins. However, foreign proteins expressed in transgenic plants are subjected to the delivery and modification processes present within plant cells. Here, it is demonstrated that unique membrane sequences deliver a yellow fluorescent protein (YFP) to the seed protein storage vacuoles in transgenic tobacco (Nicotiana tabacum L.) plants, where the YFP is then separated from its membrane anchors. This precise targeting and separation is required for the successful delivery of useful proteins to seed protein storage vacuoles for their stable accumulation in transgenic crops.


2002 ◽  
Vol 29 (9) ◽  
pp. 1107 ◽  
Author(s):  
Qing-Hu Ma ◽  
Zhan-Bing Lin ◽  
De-Zhi Fu

Seed-specific expression of a heterologous vicilin-isopentenyl transferase (ipt) gene has been determined in transgenic tobacco lines 7 and 16. Genetic analysis of self-fertilized progeny showed that a single copy of the vicilin-ipt gene had been integrated, and T2 progeny had become homozygous for the transgene. Stable inheritance of the vicilin-ipt gene in T3 progeny was verified by polymerase chain reaction analysis. Seed cytokinin levels were 2-3-fold higher than control levels. Cytological analyses revealed a significant increase in the number of plerome cell layers and enlargement of diameter in transgenic embryos compared with controls. Dry weight of mature seeds and subsequent seedling growth was increased significantly. This correlated with the level of vicilin-ipt overexpression and increased cytokinin levels in transgenic tobacco seeds. The results suggest a crucial role for cytokinins in regulation of tobacco embryo development.


1996 ◽  
Vol 32 (6) ◽  
pp. 1029-1035 ◽  
Author(s):  
Richard T. DeRose ◽  
Dilara Begum ◽  
Timothy C. Hall

2004 ◽  
Vol 42 (5) ◽  
pp. 417-423 ◽  
Author(s):  
Malinee Chatthai ◽  
Benjamin S. Forward ◽  
Dmytro Yevtushenko ◽  
Ivan Stefanov ◽  
Lubica Osuska ◽  
...  

2013 ◽  
Vol 38 (1) ◽  
pp. 39-49 ◽  
Author(s):  
Luciana Rossi ◽  
Vittorio Dell’Orto ◽  
Simona Vagni ◽  
Vittorio Sala ◽  
Serena Reggi ◽  
...  

FEBS Journal ◽  
2009 ◽  
Vol 276 (18) ◽  
pp. 5252-5262 ◽  
Author(s):  
Rakesh Kumar Shukla ◽  
Vineeta Tripathi ◽  
Deepti Jain ◽  
Rajiv Kumar Yadav ◽  
Debasis Chattopadhyay

1990 ◽  
Vol 222 (1) ◽  
pp. 49-57 ◽  
Author(s):  
Molly A. Bogue ◽  
Raymond A. Vonder Haar ◽  
Michael L. Nuccio ◽  
Lawrence R. Griffing ◽  
Terry L. Thomas

1988 ◽  
Vol 7 (2) ◽  
pp. 93-116 ◽  
Author(s):  
Thomas C. Osborn ◽  
John W.S. Brown

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