Absence of detectable yield penalty associated with insensitivity to Pleosporales necrotrophic effectors in wheat grown in the West Australian wheat belt

Genetic disease resistance is widely assumed, and occasionally proven, to cause host yield or fitness penalties due to inappropriate activation of defence response mechanisms or diversion of resources to surplus preformed defences. The study of resistance gene trade-offs has so far been restricted t...

Full description

Bibliographic Details
Main Authors:	Oliver, Richard, Lichtenzveig, Judith, Tan, Kar-Chun, Waters, O., Rybak, K., Lawrence, J., Friesen, T., Burgess, P.
Format:	Journal Article
Published:	Wiley-Blackwell 2014
Subjects:	Pyrenophora yield trade-off Parastagonospora yellow spot tan spot disease septoria nodorum blotch
Online Access:	http://hdl.handle.net/20.500.11937/33001

id	curtin-20.500.11937-33001
recordtype	eprints
spelling	curtin-20.500.11937-330012017-09-13T15:27:13Z Absence of detectable yield penalty associated with insensitivity to Pleosporales necrotrophic effectors in wheat grown in the West Australian wheat belt Oliver, Richard Lichtenzveig, Judith Tan, Kar-Chun Waters, O. Rybak, K. Lawrence, J. Friesen, T. Burgess, P. Pyrenophora yield trade-off Parastagonospora yellow spot tan spot disease septoria nodorum blotch Genetic disease resistance is widely assumed, and occasionally proven, to cause host yield or fitness penalties due to inappropriate activation of defence response mechanisms or diversion of resources to surplus preformed defences. The study of resistance gene trade-offs has so far been restricted to biotrophic pathogens. In some Pleosporales necrotrophic interactions, quantitative resistance is positively associated with insensitivity to effectors. Host lines that differ in sensitivity can easily be identified amongst current cultivars and advanced breeding lines. Large wheat cultivar trials were used to test whether lines sensitive or insensitive to three necrotrophic effectors from Pyrenophora tritici-repentis and Parastagonospora nodorum differed in yield when subjected to natural disease and stress pressures in the West Australian wheat belt. There was no significant yield penalty associated with insensitivity to the fungal effectors ToxA, SnTox1 and SnTox3. Some yield gains were associated with insensitivity and some of these gains could be attributed to increased disease resistance. It is concluded that insensitivity to these effectors does not render such plants more vulnerable to any relevant biotic or abiotic stress present in these trials. These results suggest that the elimination of sensitivity alleles for necrotrophic effectors is a safe and facile strategy for improving disease resistance whilst maintaining or improving other desirable traits. 2014 Journal Article http://hdl.handle.net/20.500.11937/33001 10.1111/ppa.12191 Wiley-Blackwell restricted
repository_type	Digital Repository
institution_category	Local University
institution	Curtin University Malaysia
building	Curtin Institutional Repository
collection	Online Access
topic	Pyrenophora yield trade-off Parastagonospora yellow spot tan spot disease septoria nodorum blotch
spellingShingle	Pyrenophora yield trade-off Parastagonospora yellow spot tan spot disease septoria nodorum blotch Oliver, Richard Lichtenzveig, Judith Tan, Kar-Chun Waters, O. Rybak, K. Lawrence, J. Friesen, T. Burgess, P. Absence of detectable yield penalty associated with insensitivity to Pleosporales necrotrophic effectors in wheat grown in the West Australian wheat belt
description	Genetic disease resistance is widely assumed, and occasionally proven, to cause host yield or fitness penalties due to inappropriate activation of defence response mechanisms or diversion of resources to surplus preformed defences. The study of resistance gene trade-offs has so far been restricted to biotrophic pathogens. In some Pleosporales necrotrophic interactions, quantitative resistance is positively associated with insensitivity to effectors. Host lines that differ in sensitivity can easily be identified amongst current cultivars and advanced breeding lines. Large wheat cultivar trials were used to test whether lines sensitive or insensitive to three necrotrophic effectors from Pyrenophora tritici-repentis and Parastagonospora nodorum differed in yield when subjected to natural disease and stress pressures in the West Australian wheat belt. There was no significant yield penalty associated with insensitivity to the fungal effectors ToxA, SnTox1 and SnTox3. Some yield gains were associated with insensitivity and some of these gains could be attributed to increased disease resistance. It is concluded that insensitivity to these effectors does not render such plants more vulnerable to any relevant biotic or abiotic stress present in these trials. These results suggest that the elimination of sensitivity alleles for necrotrophic effectors is a safe and facile strategy for improving disease resistance whilst maintaining or improving other desirable traits.
format	Journal Article
author	Oliver, Richard Lichtenzveig, Judith Tan, Kar-Chun Waters, O. Rybak, K. Lawrence, J. Friesen, T. Burgess, P.
author_facet	Oliver, Richard Lichtenzveig, Judith Tan, Kar-Chun Waters, O. Rybak, K. Lawrence, J. Friesen, T. Burgess, P.
author_sort	Oliver, Richard
title	Absence of detectable yield penalty associated with insensitivity to Pleosporales necrotrophic effectors in wheat grown in the West Australian wheat belt
title_short	Absence of detectable yield penalty associated with insensitivity to Pleosporales necrotrophic effectors in wheat grown in the West Australian wheat belt
title_full	Absence of detectable yield penalty associated with insensitivity to Pleosporales necrotrophic effectors in wheat grown in the West Australian wheat belt
title_fullStr	Absence of detectable yield penalty associated with insensitivity to Pleosporales necrotrophic effectors in wheat grown in the West Australian wheat belt
title_full_unstemmed	Absence of detectable yield penalty associated with insensitivity to Pleosporales necrotrophic effectors in wheat grown in the West Australian wheat belt
title_sort	absence of detectable yield penalty associated with insensitivity to pleosporales necrotrophic effectors in wheat grown in the west australian wheat belt
publisher	Wiley-Blackwell
publishDate	2014
url	http://hdl.handle.net/20.500.11937/33001
first_indexed	2018-09-06T21:58:56Z
last_indexed	2018-09-06T21:58:56Z
_version_	1610897043119669248

Absence of detectable yield penalty associated with insensitivity to Pleosporales necrotrophic effectors in wheat grown in the West Australian wheat belt

Similar Items