scholarly journals Toward Unravelling the Genetic Determinism of the Acquisition of Salt and Osmotic Stress Tolerance Through In Vitro Selection in Medicago truncatula

2018 ◽  
pp. 291-314 ◽  
Author(s):  
Adel M. Elmaghrabi ◽  
Hilary J. Rogers ◽  
Dennis Francis ◽  
Sergio Ochatt
Keyword(s):  
Osmotic Stress ◽  
Stress Tolerance ◽  
Medicago Truncatula ◽  
In Vitro Selection ◽  
Genetic Determinism ◽  
Osmotic Stress Tolerance ◽  
Salt And Osmotic Stress

scholarly journals Mutual Promotion of LAP2 and CAT2 Synergistically Regulates Plant Salt and Osmotic Stress Tolerance

2021 ◽  
Vol 12 ◽  
Author(s):  
Yu Zhang ◽  
Lin-Feng Wang ◽  
Ting-Ting Li ◽  
Wen-Cheng Liu
Keyword(s):  
Osmotic Stress ◽  
Stress Tolerance ◽  
Stress Responses ◽  
Plant Cells ◽  
Physical Interaction ◽  
Loss Of Function ◽  
Osmotic Stress Tolerance ◽  
Salt And Osmotic Stress

Almost all abiotic stresses induce reactive oxygen species (ROS) overaccumulation, causing oxidative damages to plant cells. Catalase (CAT) plays a vital role in plant oxidative stress tolerance by scavenging stress-induced excess H2O2; thus, the identification of factors regulating catalase function will shed light on the underlying regulatory mechanisms. Here, we identified leucine aminopeptidase 2 (LAP2) as a novel CAT2-interacting protein and showed a mutual promotion effect of the two proteins in plant stress responses. LAP2 has a physical interaction with CAT2 in plant cells. The loss-of-function mutant of LAP2, lap2-3, is hypersensitive to salt or osmotic stress with increased ROS accumulation and malondialdehyde content and decreased catalase activity. The lap2-3 mutant has less CAT2 protein levels as CAT2 protein stability is impaired in the mutant. Scavenging excess ROS by glutathione or overexpressing CAT2 in the lap2-3 mutant recovers its hypersensitive phenotype to salt or osmotic stress. Further study showed that CAT2 promotes LAP2 hydrolysis activity with leucine-4-methylcoumaryl-7-amides as a substrate in vivo and in vitro, and thus, similar to the lap2-3 mutant, the cat2-1 mutant also has lower γ-aminobutyric acid content than the wild type. Together, our study reveals mutual promotion effects of CAT2 and LAP2 in conferring plant salt and osmotic stress tolerance.

scholarly journals The grapevine VvWRKY2 gene enhances salt and osmotic stress tolerance in transgenic Nicotiana tabacum

3 Biotech ◽  
2018 ◽  
Vol 8 (6) ◽  
Author(s):  
Rim Mzid ◽  
Walid Zorrig ◽  
Rayda Ben Ayed ◽  
Karim Ben Hamed ◽  
Mariem Ayadi ◽  
...  
Keyword(s):  
Nicotiana Tabacum ◽  
Osmotic Stress ◽  
Stress Tolerance ◽  
Osmotic Stress Tolerance ◽  
Salt And Osmotic Stress ◽  
Transgenic Nicotiana Tabacum

Physiological and metabolomic analysis of a knockout mutant suggests a critical role of MtP5CS3 gene in osmotic stress tolerance of Medicago truncatula

Euphytica ◽  
2013 ◽  
Vol 193 (1) ◽  
pp. 101-120 ◽  
Author(s):  
Minh Luan Nguyen ◽  
Goon-Bo Kim ◽  
Sun-Hee Hyun ◽  
Seok-Young Lee ◽  
Chae-Young Lee ◽  
...  
Keyword(s):  
Osmotic Stress ◽  
Stress Tolerance ◽  
Medicago Truncatula ◽  
Critical Role ◽  
Metabolomic Analysis ◽  
Knockout Mutant ◽  
Osmotic Stress Tolerance

In Vitro Osmotic Stress Tolerance in Potato and Identification of Major QTLs

2012 ◽  
Vol 89 (6) ◽  
pp. 453-464 ◽  
Author(s):  
Ahmad Mousapour Gorji ◽  
Kinga Klara Matyas ◽  
Zsuzsanna Dublecz ◽  
Kincso Decsi ◽  
Istvan Cernak ◽  
...  
Keyword(s):  
Osmotic Stress ◽  
Stress Tolerance ◽  
Major Qtls ◽  
Osmotic Stress Tolerance
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