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Identification of quantitative trait loci and candidate genes for grain superoxide dismutase activity in wheat.
Qu, Kejia; Wang, Jiqing; Cheng, Yukun; Bai, Bin; Xia, Xianchun; Geng, Hongwei.
Afiliación
  • Qu K; College of Agriculture, The Engineering and Technology Research Center for High-quality, Xinjiang Agricultural University, Urumqi, 830052, China.
  • Wang J; College of Agriculture, The Engineering and Technology Research Center for High-quality, Xinjiang Agricultural University, Urumqi, 830052, China.
  • Cheng Y; College of Agriculture, The Engineering and Technology Research Center for High-quality, Xinjiang Agricultural University, Urumqi, 830052, China.
  • Bai B; Wheat Research Institute, Gansu Academy of Agricultural Sciences, Lanzhou, 730070, China.
  • Xia X; Institute of Crop Sciences, National Wheat Improvement Center, Chinese Academy of Agricultural Sciences (CAAS), Beijing, 100081, China.
  • Geng H; College of Agriculture, The Engineering and Technology Research Center for High-quality, Xinjiang Agricultural University, Urumqi, 830052, China. hw-geng@163.com.
BMC Plant Biol ; 24(1): 716, 2024 Jul 27.
Article en En | MEDLINE | ID: mdl-39060949
ABSTRACT

BACKGROUND:

Superoxide dismutase (SOD) can greatly scavenge reactive oxygen species (ROS) in plants. SOD activity is highly related to plant stress tolerance that can be improved by overexpression of SOD genes. Identification of SOD activity-related loci and potential candidate genes is essential for improvement of grain quality in wheat breeding. However, the loci and candidate genes for relating SOD in wheat grains are largely unknown. In the present study, grain SOD activities of 309 recombinant inbred lines (RILs) derived from the 'Berkut' × 'Worrakatta' cross were assayed by photoreduction method with nitro-blue tetrazolium (NBT) in four environments. Quantitative trait loci (QTL) of SOD activity were identified using inclusive composite interval mapping (ICIM) with the genotypic data of 50 K single nucleotide polymorphism (SNP) array.

RESULTS:

Six QTL for SOD activity were mapped on chromosomes 1BL, 4DS, 5AL (2), and 5DL (2), respectively, explaining 2.2 ~ 7.4% of the phenotypic variances. Moreover, QSOD.xjau-1BL, QSOD.xjau-4DS, QSOD.xjau-5 A.1, QSOD.xjau-5 A.2, and QSOD.xjau-5DL.2 identified are likely to be new loci for SOD activity. Four candidate genes TraesCS4D01G059500, TraesCS5A01G371600, TraesCS5D01G299900, TraesCS5D01G343100LC, were identified for QSOD.xjau-4DS, QSOD.xjau-5AL.1, and QSOD.xjau-5DL.1 (2), respectively, including three SOD genes and a gene associated with SOD activity. Based on genetic effect analysis, this can be used to identify desirable alleles and excellent allele variations in wheat cultivars.

CONCLUSION:

These candidate genes are annotated for promoting SOD production and inhibiting the accumulation of ROS during plant growth. Therefore, lines with high SOD activity identified in this study may be preferred for future wheat breeding.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Superóxido Dismutasa / Triticum / Sitios de Carácter Cuantitativo Idioma: En Revista: BMC Plant Biol Asunto de la revista: BOTANICA Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación: Reino Unido
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Superóxido Dismutasa / Triticum / Sitios de Carácter Cuantitativo Idioma: En Revista: BMC Plant Biol Asunto de la revista: BOTANICA Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación: Reino Unido