Cited by 69Plant Pathogenic Bacteria StudiesGenetic Mapping and Diversity in Plants and AnimalsPlant Disease Resistance and Genetics

Pyramiding bacterial blight resistance genes in tainung82 for broad-spectrum resistance using marker-assisted selection

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Hsu, Yu-Chia, Chiu, Chih-Hao, Yap, Ruishen, Tseng, Yu-Chien, Wu, Yong-Pei·2020·International Journal of Molecular Sciences

Abstract

Tainung82 (TNG82) is one of the most popular japonica varieties in Taiwan due to its relatively high yield and grain quality, however, TNG82 is susceptible to bacterial blight (BB) disease. The most economical and eco-friendly way to control BB disease in japonica is through the utilization of varieties that are resistant to the disease. In order to improve TNG82’s resistance to BB disease, five bacterial blight resistance genes (Xa4, xa5, Xa7, xa13 and Xa21) were derived from a donor parent, IRBB66 and transferred into TNG82 via marker-assisted backcrossing breeding. Five BB-resistant gene-linked markers were integrated into the backcross breeding program in order to identify individuals possessing the five identified BB-resistant genes (Xa4, xa5, Xa7, xa13 and Xa21). The polymorphic markers between the donor and recurrent parent were used for background selection. Plants having maximum contribution from the recurrent parent genome were selected in each generation and crossed with the recipient parent. Selected BC3F1 plants were selfed in order to generate homozygous BC3F2 plants. Nine pyramided plants, possessing all five BB-resistant genes, were obtained. These individuals displayed a high level of resistance against the BB strain, XF89-b. Different BB gene pyramiding lines were also inoculated against the BB pathogen, resulting in more than three gene pyramided lines that exhibited high levels of resistance. The five identified BB gene pyramided lines exhibited yield levels and other desirable agronomic traits, including grain quality and palatability, consistent with TNG82. Bacterial blight-resistant lines possessing the five identified BB genes exhibited not only higher levels of resistance to the disease, but also greater yield levels and grain quality. Pyramiding multiple genes with potential characteristics into a single genotype through marker-assisted selection can improve the efficiency of generating new crop varieties exhibiting disease resistance, as well as other desirable traits.

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Crossref · 10.3390/ijms21041281

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  • Pyramiding multiple genes involved in salt stress responses is important to improve crop salt tolerance.

    “Additionally, a study reviewed various transgenic approaches to improve crop salt tolerance, emphasizing the importance of pyramiding multiple genes involved in salt stress responses (Hsu et al., 2020; Kotula et al., 2020; Liu et al., 2021).”

    From Emerging applications of gene editing technologies for the development of climate-resilient crops (2025) · cites this paper as Hsu et al., 2020

    The Introduction describes pyramiding genes for bacterial blight resistance and gives an example involving submergence tolerance, so it supports the general value of combining genes for crop improvement. It does not address salt-stress genes or improved salt tolerance, and the study uses marker-assisted breeding rather than reviewing transgenic approaches (Introduction; Conclusions; no page numbers provided). (LLM, conf=0.82)

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Authors
Hsu, Y.-C., Chiu, C.-H., Yap, R., Tseng, Y.-C., & Wu, Y.-P.
Affiliations
  • National Chiayi University (TW)
  • Department of Agronomy, Chiayi Agricultural Experiment Station, Taiwan Agricultural Research Institute, Chiayi 60014, Taiwan
Corresponding author
Wu, Yong-Pei
Venue
International Journal of Molecular Sciences
Publisher
MDPI AG
Published
2020-02-14
Volume
21
Issue
4
Pages
1281
ISSN
1422-0067 (ISSN-L)
OpenAlex
W3005722561
Cited by
69
References
44
Citations by year
2026: 8 · 2025: 11 · 2024: 14 · 2023: 10 · 2022: 11 · 2021: 9 · 2020: 6
FWCI
5.80
Type
journal article
Language
en
Open access
Locations
  • International Journal of Molecular Sciences (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
Ministry of Science and Technology, Taiwan (MOST108-2313-B415-007)
Topics
  • Life Sciences › Agricultural and Biological Sciences › Plant Science › Plant Pathogenic Bacteria Studies
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetic Mapping and Diversity in Plants and Animals
  • Life Sciences › Agricultural and Biological Sciences › Plant Science › Plant Disease Resistance and Genetics
Keywords
bacterial blight, Xanthomonas oryzae pv. oryzae, Xa4, xa5, Xa7, xa13, Xa21, gene pyramiding, marker-assisted backcrossing, Oryza sativa subsp. japonica, disease resistance, grain quality, yield
MeSH terms
Plant Breeding, Genetic Markers, Genotype, Plant Diseases, Oryza, Taiwan, Genes, Plant, Plant Leaves, DNA, Plant, Disease Resistance, Multiplex Polymerase Chain Reaction

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