scholarly journals Characterization of Transgenic Tobacco with an Increased α-Linolenic Acid Level

1998 ◽  
Vol 118 (2) ◽  
pp. 591-598 ◽  
Author(s):  
Tatsurou Hamada ◽  
Hiroaki Kodama ◽  
Keizo Takeshita ◽  
Hideo Utsumi ◽  
Koh Iba
Keyword(s):  
Transgenic Tobacco ◽  
Linolenic Acid ◽  
Acid Level ◽  
Linolenic Acid Level

Inheritance of Low Linolenic Acid Level in the Soybean Line RG10

Crop Science ◽  
1998 ◽  
Vol 38 (6) ◽  
pp. 1441-1444 ◽  
Author(s):  
Duška Stijšin ◽  
Bruce M. Luzzi ◽  
Gary R. Ablett ◽  
Jack W. Tanner
Keyword(s):  
Linolenic Acid ◽  
Acid Level ◽  
Soybean Line ◽  
Low Linolenic Acid ◽  
Low Linolenic ◽  
Linolenic Acid Level

Serum dihomo-γ-linolenic acid level is inversely associated with the risk of depression. A 21-year follow-up study in general population men

2017 ◽  
Vol 213 ◽  
pp. 151-155 ◽  
Author(s):  
Teymoor Yary ◽  
Tommi Tolmunen ◽  
Soili M. Lehto ◽  
Tomi-Pekka Tuomainen ◽  
Tarja Nurmi ◽  
...  
Keyword(s):  
General Population ◽  
Linolenic Acid ◽  
Acid Level ◽  
Follow Up Study ◽  
Linolenic Acid Level

Effect of temperature upon linolenic acid level in wheat and rye seedlings

Lipids ◽  
1975 ◽  
Vol 10 (6) ◽  
pp. 331-334 ◽  
Author(s):  
Tibor Farkas ◽  
Éva Déri-Hadlaczky ◽  
Adonisz Belea
Keyword(s):  
Linolenic Acid ◽  
Acid Level ◽  
Effect Of Temperature ◽  
Linolenic Acid Level

Isolation of a novel strain of Monoraphidium sp. and characterization of its potential for α-linolenic acid and biodiesel production

2018 ◽  
Vol 267 ◽  
pp. 466-472 ◽  
Author(s):  
Yimeng Lin ◽  
Jingping Ge ◽  
Hongzhi Ling ◽  
Yunye Zhang ◽  
Xiufeng Yan ◽  
...  
Keyword(s):  
Linolenic Acid ◽  
Biodiesel Production

scholarly journals Evolutionary convergence in lignin-degrading enzymes

2018 ◽  
Vol 115 (25) ◽  
pp. 6428-6433 ◽  
Author(s):  
Iván Ayuso-Fernández ◽  
Francisco J. Ruiz-Dueñas ◽  
Angel T. Martínez
Keyword(s):  
Phylogenetic Analysis ◽  
Convergent Evolution ◽  
Acid Level ◽  
Lignin Degradation ◽  
Amino Acid Level ◽  
Surface Oxidation ◽  
Phenotypic Trait ◽  
Limiting Step ◽  
Powerful Strategy

The resurrection of ancestral enzymes of now-extinct organisms (paleogenetics) is a developing field that allows the study of evolutionary hypotheses otherwise impossible to be tested. In the present study, we target fungal peroxidases that play a key role in lignin degradation, an essential process in the carbon cycle and often a limiting step in biobased industries. Ligninolytic peroxidases are secreted by wood-rotting fungi, the origin of which was recently established in the Carboniferous period associated with the appearance of these enzymes. These first peroxidases were not able to degrade lignin directly and used diffusible metal cations to attack its phenolic moiety. The phylogenetic analysis of the peroxidases of Polyporales, the order in which most extant wood-rotting fungi are included, suggests that later in evolution these enzymes would have acquired the ability to degrade nonphenolic lignin using a tryptophanyl radical interacting with the bulky polymer at the surface of the enzyme. Here, we track this powerful strategy for lignin degradation as a phenotypic trait in fungi and show that it is not an isolated event in the evolution of Polyporales. Using ancestral enzyme resurrection, we study the molecular changes that led to the appearance of the same surface oxidation site in two distant peroxidase lineages. By characterization of the resurrected enzymes, we demonstrate convergent evolution at the amino acid level during the evolution of these fungi and track the different changes leading to phylogenetically distant ligninolytic peroxidases from ancestors lacking the ability to degrade nonphenolic lignin.

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