Gibberellins found in the aleurone layer of barley increases the transcription of

The correct option is protease and amylase.

During the germination of barley seeds, the plant hormone gibberellin (specifically gibberellic acid) plays a crucial role in mobilizing stored food reserves. When the seed absorbs water, gibberellin is released from the embryo and diffuses into the surrounding aleurone layer.
Once inside the cells of the aleurone layer, gibberellin signals the cell machinery to increase the transcription of specific genes. This leads to the de novo synthesis and secretion of hydrolytic enzymes.

Among these induced enzymes:
1. Amylase (specifically α-amylase) is synthesized to break down starch stored in the endosperm into simple sugars.
2. Protease is synthesized to break down stored proteins into amino acids.
These mobilization products are then used by the growing embryo. Therefore, gibberellins in the aleurone layer of barley increase the transcription of protease and amylase.