The two #systemin #peptide #receptors in tomatoes have opposite functions. While SYR1 activates systemin-induced #immune responses, SYR2 acts as an antagonist. Wounding preferentially induces the expression of SYR2 that attenuates immune responses by outcompeting SYR1 for binding with the co-receptor SERK3a
https://www.cell.com/action/showPdf?pii=S1534-5807%2824%2900670-1
Researchers develop new method for precisely quantifying #systemin, a #plant #peptide #hormone.
https://phys.org/news/2023-06-method-precisely-quantifying-systemin-peptide.html
In a study published in Plant Communications, Chu Jinfang's team from the Institute of Genetics and Developmental Biology of the Chinese Academy of Sciences (CAS) has proposed a new method for high-accuracy measurement of tomato systemin (TomSys), an important plant peptide hormone. The technology gives biologists a powerful tool to study the TomSys-mediated systemic defense responses and further develop crops with high yield and excellent adaptability.
Elly Poretsky
CellBioNews