I am PhD student from The Hong Kong Polytechnic University, and conduct a study with Arabidopsis culture. My Arabidopsis Col-0 suspension culture shows signs of going to die soon (no bacterial contamination, but turn to white in color). I don't know what's happen and never see this before. As I am in my last year and really don't have time to re-establish the culture from the begining, are there anyone know where I can buy a callus or suspension culture or anyone can kindly provide me some. Moreover, are there anyone has same experience and tell me what's happen and solve my problem. It is very very urgent for me. Thanks a lot.