PR1 is more or less related directly to salicylic acid. after attempted pathogen attack on plants the accumulation salycilic acid increases at the site of infection that leads to induce expression of PR1 gene. A type of defense response in plants
thank you dear Qari Muhammad Imran for answer to me , i wrote this question 2 years age because i decided to work about some resistance gene and their expression in plant and then i found this relation that u explain to me , after expression of this gene i did hplc for detect salicylic acid but i did not found that . but i saw that the population of nematode will be decrease and resistance gene expressed but i can't saw salicylic acid , and finally i do GC-Ms and it was so use ful for some compund that be on treatment plant , can u explain me why i didn't see salicylic acid in hplc but i had PR1 expression?