β-D-Glucopyranosyl abscisate (ABA-GE) is a hydrolyzable conjugate of abscisic acid (ABA) that predominantly accumulates in the vacuole and likely in the endoplasmic reticulum. The deconjugation of β-D-Glucopyranosyl abscisate enables a swift release of free ABA in response to abiotic stress factors such as dehydration and salt stress, playing a crucial role in maintaining ABA homeostasis.

Endoplasmic reticulum and vacuolar β-glucosidases catalyze the deconjugation of β-D-Glucopyranosyl abscisate (ABA-GE), facilitating swift production of free ABA under abiotic stress conditions like dehydration and salt stress. Additionally, β-D-Glucopyranosyl abscisate plays a pivotal role in ABA homeostasis by being the principal catabolite exported from the cytosol. In arabidopsis[1], its vacuolar transport involves ATP-binding cassette and proton-antiport mechanisms.