Secreted effector that localizes to the host nucleus to contribute to the virulence process (PubMed:34233072). Induces host innate immunity responses; triggers BAK1-and SOBIR1-dependent cell death, salicylic acid signaling and jasmonic acid signaling (PubMed:34233072). Endohydrolysis of (1->4)-beta-D-xylosidic linkages in xylans. Glycan degradation; xylan degradation. Induced in the early stages of infection of cotton plant. Decreases virulence during cotton plant infection. Belongs to the glycosyl hydrolase 11 (cellulase G) family.