Salicylic Acid-Induced MdTGA9-MdERF138-MdHCT Module Is Associated with Lignin Deposition and Improved Anthracnose Resistance in Autotetraploid Apple
Summary Apple anthracnose, caused by Colletotrichum gloeosporioides, severely threatens global apple production. Autotetraploid ‘Hanfu’ apples show stronger anthracnose resistance than diploids, but the underlying molecular mechanism remains unclear. This study identified a novel salicylic acid (SA)-regulated lignin biosynthesis signaling pathway that is closely associated with the enhanced…