Identification and mapping of Lr3 and a linked leaf rust resistance gene in durum wheat

By:

Herrera-Foessel, S

Contributor(s):

Material type: Article

ArticleLanguage: English Publication details: USA : CSSA : Wiley, 2007.ISSN:

1435-0653 (Online)

Subject(s):

Online resources:

Access only for CIMMYT Staff

In: Crop Science v. 47, no. 4, p. 1459-1466634852Summary: Leaf rust, caused by Puccinia triticina Eriks., is an important disease of durum wheat (Triticum turgidum ssp. durum) worldwide and can be controlled through the use of genetic resistance. Two leaf rust resistance genes in durum wheat lines ‘Camayo’ and ‘Storlom’ were mapped to chromosome 6BL via amplified fragment length polymorphism (AFLP) with bulked segregant analysis. The leaf rust resistance gene in Storlom was identified to be Lr3 using a previously known co-segregating marker, Xmwg798 We validated a sequence tagged site version of this marker and identified three AFLP markers that were associated with the resistance gene in Camayo. The lack of recombination between the two genes in Storlom and Camayo, and comparison of the phenotypic and molecular characteristics of Camayo and the common wheat (T. aestivum) near-isogenic ‘Thatcher’ lines carrying Lr3a, Lr3ka, and Lr3bg, indicated that the resistance in Camayo is conferred by a previously unknown gene adjacent to the Lr3 locus. The two closely linked genes confer resistance to P. triticina race BBG/BN prevalent on durum wheat in Northwestern Mexico and should be deployed in combination with other resistance genes, to prolong their effectiveness.

Tags from this library: No tags from this library for this title. Log in to add tags.

Average rating: 0.0 (0 votes)

Holdings
Item type	Current library	Collection	Call number	Copy number	Status	Date due	Barcode	Item holds
Article	CIMMYT Knowledge Center: John Woolston Library	CIMMYT Staff Publications Collection	CIS-5066 (Browse shelf(Opens below))	1	Available		634852

Total holds: 0

Browsing CIMMYT Knowledge Center: John Woolston Library shelves, Collection: CIMMYT Staff Publications Collection Close shelf browser (Hides shelf browser)

Previous								Next
Previous	CIS-5063 Combining superior agronomic performance and terminal heat tolerance with resistance to spot blotch (Bipolaris sorokiniana) of wheat in the warm humid Gangetic Plains of South Asia	CIS-5064 Comportamiento de híbridos de maíz con alta calidad de proteína, por su buen rendimiento y tolerancia al "achaparamiento"	CIS-5065 Performance of yield and stability of advanced wheat genotypes under heat stress environments of the Indo-Gangetic plains	CIS-5066 Identification and mapping of Lr3 and a linked leaf rust resistance gene in durum wheat	CIS-5067 Variation in chlorophyll content, anatomical traits and agronomic performance of wheat genotypes differing in spot blotch resistance under natural epiphytotic conditions	CIS-5068 Influence of tillage, residue management, and crop rotation on soil microbial biomass and catabolic diversity	CIS-5069 Cambios anatómicos en raíces de cebada (Hordeum vulgare L.) inducidos por Cactodera Galinsogae = Anatomical changes on barley roots (Hordeum vulgare L.) induced by Cactodera Galinsogae	Next

Peer review

Peer-review: Yes - Open Access: Yes|http://science.thomsonreuters.com/cgi-bin/jrnlst/jlresults.cgi?PC=MASTER&ISSN=0011-183X

Leaf rust, caused by Puccinia triticina Eriks., is an important disease of durum wheat (Triticum turgidum ssp. durum) worldwide and can be controlled through the use of genetic resistance. Two leaf rust resistance genes in durum wheat lines ‘Camayo’ and ‘Storlom’ were mapped to chromosome 6BL via amplified fragment length polymorphism (AFLP) with bulked segregant analysis. The leaf rust resistance gene in Storlom was identified to be Lr3 using a previously known co-segregating marker, Xmwg798 We validated a sequence tagged site version of this marker and identified three AFLP markers that were associated with the resistance gene in Camayo. The lack of recombination between the two genes in Storlom and Camayo, and comparison of the phenotypic and molecular characteristics of Camayo and the common wheat (T. aestivum) near-isogenic ‘Thatcher’ lines carrying Lr3a, Lr3ka, and Lr3bg, indicated that the resistance in Camayo is conferred by a previously unknown gene adjacent to the Lr3 locus. The two closely linked genes confer resistance to P. triticina race BBG/BN prevalent on durum wheat in Northwestern Mexico and should be deployed in combination with other resistance genes, to prolong their effectiveness.

Global Wheat Program

Text in English

Crop Science Society of America (CSSA)

SE-SLU 2007 HERRERA-FOESSEL D rf

INT2833|INT3219|INT0610

Click on an image to view it in the image viewer

Knowledge Center Catalog

Identification and mapping of Lr3 and a linked leaf rust resistance gene in durum wheat

Browsing CIMMYT Knowledge Center: John Woolston Library shelves, Collection: CIMMYT Staff Publications Collection Close shelf browser (Hides shelf browser)

International Maize and Wheat Improvement Center (CIMMYT) © Copyright 2021.
Carretera México-Veracruz. Km. 45, El Batán, Texcoco, México, C.P. 56237.
If you have any question, please contact us at
CIMMYT-Knowledge-Center@cgiar.org

Knowledge Center Catalog

Identification and mapping of Lr3 and a linked leaf rust resistance gene in durum wheat

Browsing CIMMYT Knowledge Center: John Woolston Library shelves, Collection: CIMMYT Staff Publications Collection Close shelf browser (Hides shelf browser)

International Maize and Wheat Improvement Center (CIMMYT) © Copyright 2021. Carretera México-Veracruz. Km. 45, El Batán, Texcoco, México, C.P. 56237. If you have any question, please contact us at CIMMYT-Knowledge-Center@cgiar.org

International Maize and Wheat Improvement Center (CIMMYT) © Copyright 2021.
Carretera México-Veracruz. Km. 45, El Batán, Texcoco, México, C.P. 56237.
If you have any question, please contact us at
CIMMYT-Knowledge-Center@cgiar.org