The first field tests were conducted with which of the following genetically altered organism?

ANS:D - Strawberry seedlings sprayed with ice-minus bacteria

Ice minus bacteria is a mutant strain of psedomonas syringe or ice plus strain. It was first sprayed in 1986. It was also produced commercially by the name frostban, which was later banned by environment regulatory authorities. This mutant strain provides less favourable environment for frost formation when sprayed over the plant.