Association of the degree of methylation of intercellular pectin with plant resistance to aphids and with induction of aphid biotypes |
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| Authors: | D L Dreyer B C Campbell |
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| Institution: | (1) Western Regional Research Center, Agricultural Research Service, U.S. Department of Agriculture, 94710 Berkeley, California, USA |
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| Abstract: | Summary Increased methylation of middle lamellar pectin in plants hinders aphids in penetrating host-plant tissue. In sorghum, a new aphid biotype has overcome this host-plant barrier by having increased pectin methylesterase activity. Results suggest that resistance in crop-plants against sap-feeding insects may possibly be manipulated by altering middle lamellar chemistry either through breeding or use of certain plant-growth regulators. |
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