I have an ISO image in another system which I need to burn on my system. I can copy that image to my system using SCP and then do burning. But I would like to know, whether I can directly burn the remote data(image here) to the dvd? Both the systems have GNU/Linux.
If you have control over both systems, you could share the data with NFS, mount it on your system, and burn your image just as you would if the data was local.
There's also sshfs, which lets you mount a remote machine's filesystem using ssh as the data bearer.
If you can ssh to the system where the ISO file resides you can do this:
ssh syswithiso 'cat /path/to/file.iso' | growisofs -Z /dev/dvd=/dev/fd/0
NOTE: The /dev/fd/0 is the file descriptor for STDIN.