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GrainGenes Reference Report: JPY-159-1289

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Reference	JPY-159-1289
Title	Intercellular chitinase and peroxidase activities associated with resistance conferred by gene Lr35 to leaf rust of wheat
Journal	Journal of Plant Physiology
Year	2002
Volume	159
Pages	1289-1261
Author	Anguelova-Merhar VS van der Westhuizen AJ Pretorius ZA
Abstract	Summary: The effect of leaf rust (Puccinia triticina) infection on intercellular chitinase (EC 3.2.1.14) and peroxidase (EC 1.11.1.7) activities was studied in resistant [RL 6082 (Thatcher/Lr35)] and susceptible (Thatcher) near isogenic wheat (Tritium L.) lines at seedling, stem elongation and flag leaf stages of plant growth. The levels of activity of these enzymes were low during the seedling and stem elongation stages. Resistant plants at the flag leaf stage, during which the Lr35 resistance gene was maximally expressed, exhibited high constitutive levels of chitinase and peroxidase activities, in contrast to the lower constitutive levels of susceptible plants. The results suggest that chitinase and peroxidase, constitutively present in the intercellular spaces of Thatcher/Lr35 wheat leaves, may play a role in Lr35 mediated resistance to leaf rust
Keyword	[ Hide all but 1 of 30 ] chitinase developmental stages disease resistance elongation enzyme enzyme activity gene genetic resistance growth infection intercellular chitinase intercellular spaces leaf rust peroxidase peroxidase activity plant development plant growth resistance resistance gene resistant rust rust diseases seedling space stem stem elongation triticum triticum aestivum wheat leaf wheat leaves

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