EFFECTIVENESS OF THE WHEAT Lr22b, Lr34, AND Lr37 GENES FOR ADULT PLANT RESISTANCE TO LEAF RUST IN WEST SIBERIA AND THE CYTOPHYSIOLOGICAL BASIS OF THEIR ACTION

The effect of genes for adult plant resistance to leaf rust has been explored in southern West Siberia by the examples of common wheat cv. Thatcher (Tc), carrying the Lr22b gene, and its near-isogenic lines TcLr34 and TcLr37. Lr22b is ineffi cient, Lr34 slows down the disease development at a mean d...

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Main Authors: L. Ya. Plotnikova, T. Yu. Shtubey
Format: Article
Language:English
Published: Siberian Branch of the Russian Academy of Sciences, Federal Research Center Institute of Cytology and Genetics, The Vavilov Society of Geneticists and Breeders 2014-12-01
Series:Вавиловский журнал генетики и селекции
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Online Access:https://vavilov.elpub.ru/jour/article/view/31
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author L. Ya. Plotnikova
T. Yu. Shtubey
author_facet L. Ya. Plotnikova
T. Yu. Shtubey
author_sort L. Ya. Plotnikova
collection DOAJ
description The effect of genes for adult plant resistance to leaf rust has been explored in southern West Siberia by the examples of common wheat cv. Thatcher (Tc), carrying the Lr22b gene, and its near-isogenic lines TcLr34 and TcLr37. Lr22b is ineffi cient, Lr34 slows down the disease development at a mean daily temperature below 16 ºС, but is poorly efficient at temperatures above 20 ºС. Lr37 confers high resistance under all conditions. At the heading stage, TcLr34 and TcLr37 show similar components of partial resistance to rust: reduction in the number and sizes of spots and sporogenesis suppression. Cytological examination has revealed partial suppression of the formation of Puccinia triticina infection signs (appressoria and haustorium) without hypersensitive reaction (HR). Additional defense mechanisms include an oxidative burst induced by contacts of appressoria with stomata and callose-lignine appositions on the wall. Auto fluorescence of lignins in TcLr34 and TcLr37 lines differs from the glow typical of HR-accompanied combinations. The Lr34 and Lr37 genes exert a pleiotropic action on pathogenesis.
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institution Kabale University
issn 2500-3259
language English
publishDate 2014-12-01
publisher Siberian Branch of the Russian Academy of Sciences, Federal Research Center Institute of Cytology and Genetics, The Vavilov Society of Geneticists and Breeders
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series Вавиловский журнал генетики и селекции
spelling doaj-art-21a495cd93434afba43b23434fedf6512025-02-01T09:57:58ZengSiberian Branch of the Russian Academy of Sciences, Federal Research Center Institute of Cytology and Genetics, The Vavilov Society of Geneticists and BreedersВавиловский журнал генетики и селекции2500-32592014-12-0116112313115EFFECTIVENESS OF THE WHEAT Lr22b, Lr34, AND Lr37 GENES FOR ADULT PLANT RESISTANCE TO LEAF RUST IN WEST SIBERIA AND THE CYTOPHYSIOLOGICAL BASIS OF THEIR ACTIONL. Ya. Plotnikova0T. Yu. Shtubey1Omsk Stolypin Agrarian University, Omsk, RussiaOmsk Stolypin Agrarian University, Omsk, RussiaThe effect of genes for adult plant resistance to leaf rust has been explored in southern West Siberia by the examples of common wheat cv. Thatcher (Tc), carrying the Lr22b gene, and its near-isogenic lines TcLr34 and TcLr37. Lr22b is ineffi cient, Lr34 slows down the disease development at a mean daily temperature below 16 ºС, but is poorly efficient at temperatures above 20 ºС. Lr37 confers high resistance under all conditions. At the heading stage, TcLr34 and TcLr37 show similar components of partial resistance to rust: reduction in the number and sizes of spots and sporogenesis suppression. Cytological examination has revealed partial suppression of the formation of Puccinia triticina infection signs (appressoria and haustorium) without hypersensitive reaction (HR). Additional defense mechanisms include an oxidative burst induced by contacts of appressoria with stomata and callose-lignine appositions on the wall. Auto fluorescence of lignins in TcLr34 and TcLr37 lines differs from the glow typical of HR-accompanied combinations. The Lr34 and Lr37 genes exert a pleiotropic action on pathogenesis.https://vavilov.elpub.ru/jour/article/view/31common wheatleaf rustadult resistance genescytologyoxidative burstcalloselignin
spellingShingle L. Ya. Plotnikova
T. Yu. Shtubey
EFFECTIVENESS OF THE WHEAT Lr22b, Lr34, AND Lr37 GENES FOR ADULT PLANT RESISTANCE TO LEAF RUST IN WEST SIBERIA AND THE CYTOPHYSIOLOGICAL BASIS OF THEIR ACTION
Вавиловский журнал генетики и селекции
common wheat
leaf rust
adult resistance genes
cytology
oxidative burst
callose
lignin
title EFFECTIVENESS OF THE WHEAT Lr22b, Lr34, AND Lr37 GENES FOR ADULT PLANT RESISTANCE TO LEAF RUST IN WEST SIBERIA AND THE CYTOPHYSIOLOGICAL BASIS OF THEIR ACTION
title_full EFFECTIVENESS OF THE WHEAT Lr22b, Lr34, AND Lr37 GENES FOR ADULT PLANT RESISTANCE TO LEAF RUST IN WEST SIBERIA AND THE CYTOPHYSIOLOGICAL BASIS OF THEIR ACTION
title_fullStr EFFECTIVENESS OF THE WHEAT Lr22b, Lr34, AND Lr37 GENES FOR ADULT PLANT RESISTANCE TO LEAF RUST IN WEST SIBERIA AND THE CYTOPHYSIOLOGICAL BASIS OF THEIR ACTION
title_full_unstemmed EFFECTIVENESS OF THE WHEAT Lr22b, Lr34, AND Lr37 GENES FOR ADULT PLANT RESISTANCE TO LEAF RUST IN WEST SIBERIA AND THE CYTOPHYSIOLOGICAL BASIS OF THEIR ACTION
title_short EFFECTIVENESS OF THE WHEAT Lr22b, Lr34, AND Lr37 GENES FOR ADULT PLANT RESISTANCE TO LEAF RUST IN WEST SIBERIA AND THE CYTOPHYSIOLOGICAL BASIS OF THEIR ACTION
title_sort effectiveness of the wheat lr22b lr34 and lr37 genes for adult plant resistance to leaf rust in west siberia and the cytophysiological basis of their action
topic common wheat
leaf rust
adult resistance genes
cytology
oxidative burst
callose
lignin
url https://vavilov.elpub.ru/jour/article/view/31
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AT tyushtubey effectivenessofthewheatlr22blr34andlr37genesforadultplantresistancetoleafrustinwestsiberiaandthecytophysiologicalbasisoftheiraction