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  • Salix
  • We isolated cDNA clones (pSgPG1 through pSgPG4, pSgPME1 and pSgGN1) for the polygalacturonases (PGs), pectin methylesterase (PME) and β-1,3-glucanase (GN) that are expressed specifically in male flowers of the dioecious willow ( Salix gilgiana Seemen). (oup.com)