Methods for promoting plant health using free enzymes and microorganisms that overexpress enzymes

A method for stimulating plant growth and/or promoting plant health comprising applying a free enzyme to a plant seed, wherein the enzyme is selected from:

• a phospholipase comprising an amino acid sequence having at least 95% identity to any one of SEQ ID NOs:
• 18, 19, 115, 116 or 117;
• a lipase comprising an amino acid sequence having at least 95% identity to any one of SEQ ID NOs:
• 118, 119 or 120;
• a xylanase comprising an amino acid sequence having at least 95% identity to any one of SEQ ID NOs:
• 25, 121, or 122;
• a xylosidase comprising an amino acid sequence having at least 95% identity to SEQ ID NO:
• 123;
• or
• a chitosanase comprising an amino acid sequence having at least 95% identity to SEQ ID NO:
• 124;
• and
• wherein a plant grown from the plant seed exhibits increased height or yield as compared to a plant grown from a control seed under the same conditions.