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Rht24 reduces height in the winter wheat population 'Solitär × Bussard' without adverse effects on Fusarium head blight infection.
Theor Appl Genet. 2018 Jun; 131(6):1263-1272.TA

Abstract

KEY MESSAGE

The dwarfing gene Rht24 on chromosome 6A acts in the wheat population 'Solitär × Bussard', considerably reducing plant height without increasing Fusarium head blight severity and delaying heading stage. The introduction of the Reduced height (Rht)-B1 and Rht-D1 semi-dwarfing genes led to remarkable increases in wheat yields during the Green Revolution. However, their utilization also brings about some unwanted characteristics, including the increased susceptibility to Fusarium head blight. Thus, Rht loci that hold the potential to reduce plant height in wheat without concomitantly increasing Fusarium head blight (FHB) susceptibility are urgently required. The biparental population 'Solitär × Bussard' fixed for the Rht-1 wild-type alleles, but segregating for the recently described gibberellic acid (GA)-sensitive Rht24 gene, was analyzed to identify quantitative trait loci (QTL) for FHB severity, plant height, and heading date and to evaluate the effect of the Rht24 locus on these traits. The most prominent QTL was Rht24 on chromosome 6A explaining 51% of genotypic variation for plant height and exerting an additive effect of - 4.80 cm. For FHB severity three QTL were detected, whereas five and six QTL were found for plant height and heading date, respectively. No FHB resistance QTL was co-localized with QTL for plant height. Unlike the Rht-1 semi-dwarfing alleles, Rht24b did not significantly affect FHB severity. This demonstrates that the choice of semi-dwarfing genes used in plant breeding programs is of utmost consideration where resistance to FHB is an important breeding target.

Authors+Show Affiliations

State Plant Breeding Institute, University of Hohenheim, Fruwirthstr. 21, 70599, Stuttgart, Germany.KWS LOCHOW GmbH, Ferdinand-von-Lochow-Straβe 5, 29303, Bergen, Germany.KWS LOCHOW GmbH, Ferdinand-von-Lochow-Straβe 5, 29303, Bergen, Germany.KWS LOCHOW GmbH, Ferdinand-von-Lochow-Straβe 5, 29303, Bergen, Germany.State Plant Breeding Institute, University of Hohenheim, Fruwirthstr. 21, 70599, Stuttgart, Germany.State Plant Breeding Institute, University of Hohenheim, Fruwirthstr. 21, 70599, Stuttgart, Germany.State Plant Breeding Institute, University of Hohenheim, Fruwirthstr. 21, 70599, Stuttgart, Germany. miedaner@uni-hohenheim.de.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

29468459

Citation

Herter, Cathérine Pauline, et al. "Rht24 Reduces Height in the Winter Wheat Population 'Solitär × Bussard' Without Adverse Effects On Fusarium Head Blight Infection." TAG. Theoretical and Applied Genetics. Theoretische Und Angewandte Genetik, vol. 131, no. 6, 2018, pp. 1263-1272.
Herter CP, Ebmeyer E, Kollers S, et al. Rht24 reduces height in the winter wheat population 'Solitär × Bussard' without adverse effects on Fusarium head blight infection. Theor Appl Genet. 2018;131(6):1263-1272.
Herter, C. P., Ebmeyer, E., Kollers, S., Korzun, V., Leiser, W. L., Würschum, T., & Miedaner, T. (2018). Rht24 reduces height in the winter wheat population 'Solitär × Bussard' without adverse effects on Fusarium head blight infection. TAG. Theoretical and Applied Genetics. Theoretische Und Angewandte Genetik, 131(6), 1263-1272. https://doi.org/10.1007/s00122-018-3076-8
Herter CP, et al. Rht24 Reduces Height in the Winter Wheat Population 'Solitär × Bussard' Without Adverse Effects On Fusarium Head Blight Infection. Theor Appl Genet. 2018;131(6):1263-1272. PubMed PMID: 29468459.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Rht24 reduces height in the winter wheat population 'Solitär × Bussard' without adverse effects on Fusarium head blight infection. AU - Herter,Cathérine Pauline, AU - Ebmeyer,Erhard, AU - Kollers,Sonja, AU - Korzun,Viktor, AU - Leiser,Willmar Lukas, AU - Würschum,Tobias, AU - Miedaner,Thomas, Y1 - 2018/02/21/ PY - 2017/12/14/received PY - 2018/02/16/accepted PY - 2018/2/23/pubmed PY - 2018/5/17/medline PY - 2018/2/23/entrez SP - 1263 EP - 1272 JF - TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik JO - Theor Appl Genet VL - 131 IS - 6 N2 - KEY MESSAGE: The dwarfing gene Rht24 on chromosome 6A acts in the wheat population 'Solitär × Bussard', considerably reducing plant height without increasing Fusarium head blight severity and delaying heading stage. The introduction of the Reduced height (Rht)-B1 and Rht-D1 semi-dwarfing genes led to remarkable increases in wheat yields during the Green Revolution. However, their utilization also brings about some unwanted characteristics, including the increased susceptibility to Fusarium head blight. Thus, Rht loci that hold the potential to reduce plant height in wheat without concomitantly increasing Fusarium head blight (FHB) susceptibility are urgently required. The biparental population 'Solitär × Bussard' fixed for the Rht-1 wild-type alleles, but segregating for the recently described gibberellic acid (GA)-sensitive Rht24 gene, was analyzed to identify quantitative trait loci (QTL) for FHB severity, plant height, and heading date and to evaluate the effect of the Rht24 locus on these traits. The most prominent QTL was Rht24 on chromosome 6A explaining 51% of genotypic variation for plant height and exerting an additive effect of - 4.80 cm. For FHB severity three QTL were detected, whereas five and six QTL were found for plant height and heading date, respectively. No FHB resistance QTL was co-localized with QTL for plant height. Unlike the Rht-1 semi-dwarfing alleles, Rht24b did not significantly affect FHB severity. This demonstrates that the choice of semi-dwarfing genes used in plant breeding programs is of utmost consideration where resistance to FHB is an important breeding target. SN - 1432-2242 UR - https://www.unboundmedicine.com/medline/citation/29468459/Rht24_reduces_height_in_the_winter_wheat_population_'Solitär_×_Bussard'_without_adverse_effects_on_Fusarium_head_blight_infection_ L2 - https://dx.doi.org/10.1007/s00122-018-3076-8 DB - PRIME DP - Unbound Medicine ER -