Isolation and characterization of rice mutants compromised in Xa21-mediated resistance to X. oryzae pv. oryzae.

Isolation and characterization of rice mutants compromised in Xa21-mediated resistance to X. oryzae pv. oryzae. Research Abstract Details 

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Isolation and characterization of rice mutants compromised in Xa21-mediated resistance to X. oryzae pv. oryzae. Abstract Text:

G L Wang,C Wu,L Zeng,C He,M Baraoidan,F de Assis Goes da Silva,C E Williams,P C Ronald,H Leung,

The rice gene, Xa21, confers resistance to diverse races of Xanthomonas oryzae pv. oryzae (Xoo) and encodes a receptor-like kinase with leucine-rich repeats in the extra-cellular domain. To identify genes essential for the function of the Xa21 gene, 4,500 IRBB21 ( Xa21 isogenic line in IR24 background) mutants, induced by diepoxybutane and fast neutrons, were screened against Philippine race six (PR6) Xoo for a change from resistance to susceptibility. From two greenhouse screens, 23 mutants were identified that had changed from resistant to fully (6) or partially (17) susceptible to PR6. All fully susceptible mutants carried rearrangements at the Xa21 locus as detected by PCR and Southern hybridization. For the partially susceptible mutants, no changes were detected at the Xa21 locus based on Southern and PCR analyses. However, two of these mutants were confirmed via genetic analysis to have mutations at the Xa21 locus. Partially susceptible mutants exhibited variation in level of susceptibility to different Xoo strains, suggesting that they may carry different mutations required for the Xa21-mediated resistance. The mutants identified in this study provide useful materials for dissecting the Xa21-mediated resistance pathway in rice.

Isolation and characterization of rice mutants compromised in Xa21-mediated resistance to X. oryzae pv. oryzae. Publishing Authors By Initials

GL Wang,C Wu,L Zeng,C He,M Baraoidan,F de Assis Goes da Silva,CE Williams,PC Ronald,H Leung,

For similar bacteria: gram-negative bacteria: gram-negative aerobic bacteria: gram-negative aerobic rods and cocci: xanthomonadaceae: xanthomonas research abstracts see: bacteria: gram-negative bacteria: gram-negative aerobic bacteria: gram-negative aerobic rods and cocci: xanthomonadaceae: xanthomonas research

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Isolation and characterization of rice mutants compromised in Xa21-mediated resistance to X. oryzae pv. oryzae. Journal Published:

PUBLICATION TYPE: Research Support, Non-U.S. Gov

Journal: TAG. Theoretical and applied genetics. Theoretisch

VOLUME: 108

Page Numbers: 379-84

Journal Abbreviation:

ISSN: 0040-5752

DAY: 2

MONTH: 10

YEAR: 2003

Isolation and characterization of rice mutants compromised in Xa21-mediated resistance to X. oryzae pv. oryzae. Information

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LANGUAGE: eng

NlmUniqueID: 145600

Isolation and characterization of rice mutants compromised in Xa21-mediated resistance to X. oryzae pv. oryzae. Keywords Mesh Terms:

KEYWORDS: Xanthomonas

MESH TERMS: pathogenicity

Chemical & Substance for Abstract: Isolation and characterization of rice mutants compromised in Xa21-mediated resistance to X. oryzae pv. oryzae. Information

Substance Name: Protein-Serine-Threonine Kinases

Registry Number: EC 2.7.11.1

Grant and Affiliation Information for Isolation and characterization of rice mutants compromised in Xa21-mediated resistance to X. oryzae pv. oryzae.

AFFILIATION: Department of Plant Pathology, The Ohio State University, Kottman Hall, 2021 Coffey Road, Columbus, OH 43210-1087, USA. wang.620@osu.edu

Country: Germany

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MEDLINETA: Theor Appl Genet

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