Chlorophyll breakdown in senescent leaves Carbon Catabolic Characteristics About the Soil Dominant Bacteria from ‘Hanfu’Apple Orchard with Herbage-mulching Management Regulation of Brassinosteroid Biosynthesis and Inactivation Carbon Catabolic Characteristics About the Soil Dominant Bacteria from ‘Hanfu’Apple Orchard with Herbage-mulching Management Abscisic acid catabolism and 8‘-hydroxylase, a key enzyme in the oxidative catabolism