Proteinase inhibitor-inducing factor activity in tomato leaves resides in oligosaccharides enzymically released from cell walls
- 1 June 1981
- journal article
- research article
- Published by Proceedings of the National Academy of Sciences in Proceedings of the National Academy of Sciences
- Vol. 78 (6) , 3536-3540
- https://doi.org/10.1073/pnas.78.6.3536
Abstract
The synthesis and accumulation of proteinase inhibitor I in excised tomato leaves can be induced with oligosaccharides obtained by fungal [Rhizopus stolonifer] endo-.alpha.-1,4-polygalacturonase digestion of pectic polysaccharide (MW 5000-10,000) isolated from tomato leaves. Active oligosaccharides were released from isolated tomato leaf cell walls by endopolygalacturonases partially purified from tomato plants. Oligosaccharides, released from plant cell wall pectic polysaccharides by either endogenous or exogenous endopolygalacturonases at a wound or infection site, may have hormone-like roles in regulating plant defense responses in unwounded tissues many centimeters away from the site of release.This publication has 8 references indexed in Scilit:
- Polygalacturonase from Rhizopus stolonifer, an Elicitor of Casbene Synthetase Activity in Castor Bean (Ricinus communis L.) SeedlingsPlant Physiology, 1981
- Structure of Plant Cell WallsPlant Physiology, 1980
- Wound-Regulated Synthesis and Vacuolar Compartmentation of Proteinase Inhibitors in Plant LeavesPublished by Elsevier ,1980
- Phytoalexin production by hypocotyls of Phaseolus vulgaris in response to constitutive metabolites released by damaged bean cellsPhysiological Plant Pathology, 1978
- The regulation by carbon dioxide of protein synthesis in tomato leavesBiochemical and Biophysical Research Communications, 1977
- Two forms of polygalacturonase in tomatoesBiochimica et Biophysica Acta (BBA) - Enzymology, 1973
- Mode of action of pectic enzymes. I. Purification and certain properties of tomato pectinesteraseBiochemistry, 1968
- Notes on sugar determination.1952