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Hidden enzyme secret: How does lysinase affect plant survival in wound response?
In nature, plants face various threats from pathogens and mechanical damage.To survive, plants must quickly adapt to these stresses and respond.Latest research shows that lysinase (LAP) plays a key role in the process.These enzymes are not only involved in the degradation of proteins, but also play an important role in the immune response and repair process of plants.
"Lyminase is an important biochemical mechanism of plant reactions, and its role cannot be ignored especially in the face of biological and abiotic adversities."
Characteristics of Lysinase
Lyminidase is mainly an enzyme that specializes in catalyzing the hydrolysis of strontium amino acids at the N-terminal in peptides and proteins.These enzymes are distributed in major kingdoms, including humans, cattle, pigs, and tomatoes.Especially in tomatoes, the role of lysinase (LAP-A) has gradually gained attention, which is closely related to the survival of plants.
Structure and mechanism of enzymes
The active site structure of lysinase is similar, even among different organisms.These enzymes are metalpeptidases, which rely on divalent metal ions such as Mn2+, Mg2+ and Zn2+ for catalyzing.Studies have shown that at pH 8, the activity of such enzymes can reach the highest at 60°C.
"The mechanism of lysinase needs to be further explored, but the existing data shows that it plays a crucial role in immune and trauma response."
Plant immune response
When plants cannot escape, they must rely on various internal mechanisms to fight against external threats.When plants encounter ingesting insects, such as tobacco hornworms, they activate a set of signaling pathways regulated by jasmonic acid.This pathway is responsible for synthesizing a series of defensive genes that and their products can inhibit insects' feeding behavior.
The role of jasmonic acid pathway and lysinase
In recent research, scientists have found that LAP-A is not just a "cleaning up" enzyme, it also plays a regulatory role in the regulation of jasmonic acid.Some experiments have shown that the tomato strains that lack LAP-A have significantly reduced resistance to insects, while the overexpressed strains show stronger defense capabilities.These results suggest that LAP-A plays an important role in regulating the intensity and persistence of trauma responses.
"LAP-A is the first aminopeptidase to be proven to play a regulator role in plant signaling pathways."
The influence of water diffusion
It is worth noting that LAP activity is also shown in some marine organisms, especially their viability in high salt environments.When faced with a high salt environment, the catalytic process of LAP can assist cells in releasing amine acids, balance internal ion concentrations, and maintain stable cellular function.
Conclusion
As the gradual deepening of research on plant immune responses, the role of lysinase still arouses widespread attention and discussion.How these enzymes are converted into key factors in the survival of plants, thereby affecting the overall ecological balance, once again confirming the subtlety and complexity of the natural structure.If you learn more about the functions of these enzymes in the future, will it possible to provide a new perspective and basis for the stress resistance of plants?
