Cloning and expression analysis of three cDNAs encoding omega-3 fatty acid desaturases from Descurainia sophia

2007 ◽  
Vol 29 (9) ◽  
pp. 1417-1424 ◽  
Author(s):  
Sanyuan Tang ◽  
Rongzhan Guan ◽  
Hongsheng Zhang ◽  
Ji Huang
1993 ◽  
Vol 103 (2) ◽  
pp. 467-476 ◽  
Author(s):  
N. S. Yadav ◽  
A. Wierzbicki ◽  
M. Aegerter ◽  
C. S. Caster ◽  
L. Perez-Grau ◽  
...  

2011 ◽  
Vol 6 (3) ◽  
pp. 422-425 ◽  
Author(s):  
Nicholas Khuu ◽  
Satinder Gidda ◽  
Jay M. Shockey ◽  
John M. Dyer ◽  
Robert T. Mullen

Author(s):  
Muthulakshmi Chellamuthu ◽  
Reshma Sanal ◽  
Selvi Subramanian

Omega 3 fatty acid desaturases are involved in the production of α-linolenic acid (LNA) an essential omega 3 fatty acid, which is present in only traces in sesame seeds. LNA is the precursor for jasmonic acid which is the end product of octadecanoid pathway. This study was undertaken to analyze the key components of octadecanoid pathway and its relationship with fatty acid content in sesame. Fatty acid desaturation and membrane fluidity are modulated differentially in various stresses. Sesame seedlings were subjected to transient stress to analyse the octadecanoid pathway and its impact on fatty acid desaturation.  The mRNA levels of omega 3 desaturases and LNA content were higher in cold stressed sesame seedlings than heat, drought and salinity stresses. The LOX activity and MDA content were higher in heat stressed sesame seedlings. Jasmonic acid content was higher in salinity stressed seedlings while abscisic acid registered the highest in drought stressed seedlings. Chloroplast fatty acid desaturase genes expression was found to increase the LNA content in cold stressed seedlings. The level of membrane damage measured by lipid peroxidation in terms of LOX activity and MDA content were found to be minimal in cold stressed seedling. This suggests a possible role of LNA in membrane fluidity and cold acclimation in sesame. A synergistic role of JA and ABA is also suspected in abiotic stress tolerance in sesame.


EDIS ◽  
2013 ◽  
Vol 2013 (11) ◽  
Author(s):  
Jeanine Beatty ◽  
Karla Shelnutt ◽  
Gail P. A. Kauwell

People have been eating eggs for centuries. Records as far back as 1400 BC show that the Chinese and Egyptians raised birds for their eggs. The first domesticated birds to reach the Americas arrived in 1493 on Christopher Columbus' second voyage to the New World. Most food stores in the United States offer many varieties of chicken eggs to choose from — white, brown, organic, cage free, vegetarian, omega-3 fatty acid enriched, and more. The bottom line is that buying eggs is not as simple as it used to be because more choices exist today. This 4-page fact sheet will help you understand the choices you have as a consumer, so you can determine which variety of egg suits you and your family best. Written by Jeanine Beatty, Karla Shelnutt, and Gail Kauwell, and published by the UF Department of Family Youth and Community Sciences, November 2013. http://edis.ifas.ufl.edu/fy1357


Sign in / Sign up

Export Citation Format

Share Document