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Genome-wide association study reveals the genetic basis of amino acids contents variations in Peanut (Arachis hypogaea L.).

Author information

Affiliations

  • 1. Crops Research Institute, Guangdong Academy of Agricultural Sciences, Guangdong Provincial Key Laboratory of Crop Genetic Improvement, South China Peanut Sub-Centre of National Centre of Oilseed Crops Improvement, Guangzhou, China.
      Authors
    • Umer MJ 1
    • Lu Q 1
    • Huang L 1
    • Liu H 1
    • Li H 1
    • Wang R 1
    • Qianxia Y 1
    • Hong Y 1
    • Chen X 1
    (9 authors)
  • 2. Institute of Plant Protection, Guangdong Academy of Agricultural Sciences, Key Laboratory of Green Prevention and Control on Fruits and Vegetables in South China Ministry of Agriculture and Rural Affairs, Guangdong Provincial Key Laboratory of High Technology for Plant Protection, Guangzhou, China.
      Authors
    • Batool R 2
    (1 author)
  • 3. WA State Agricultural Biotechnology Centre, Centre for Crop and Food Innovation, Food Futures Institute, Murdoch University, Murdoch, Western Australia, Australia.
      Authors
    • Varshney RK 3
    (1 author)
  • 4. International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Hyderabad, India.
      Authors
    • Pandey MK 4
    (1 author)

ORCIDs linked to this article

Physiologia Plantarum, 01 Sep 2024, 176(5):e14542
https://doi.org/10.1111/ppl.14542 PMID: 39363145 

Abstract 

Peanut is a significant source of protein for human consumption. One of the primary objectives in peanut breeding is the development of new cultivars with enhanced nutritional values. To further this goal, a genome-wide association study (GWAS) was conducted to analyze seed amino acids contents in 390 diverse peanut accessions collected worldwide, mainly from China, India, and the United States, in 2017 and 2018. These accessions were assessed for their content of 10 different amino acids. Variations in amino acids contents were observed, and arginine (Arg) was found to have the highest average value among all the amino acids quantified. The geographical distribution of the accessions also revealed variations in amino acids contents. High and positive correlation coefficients were observed among the amino acids, suggesting linked metabolic pathways or genetic regulation. A total of 88 single nucleotide polymorphisms (SNPs) spanning various chromosomes were identified, each associated with different amino acids. By using a combination of GWAS, expression anlaysis, and genomic polymorphisim comparisions, the Ahy_A09g041582 (LAC15) gene located on chromrosome A09 was identified as the key candidate which might be involved in plant growth and regulation and may alter amino acids levels. Expression analysis indicated that Ahy_A09g041582 has higher expressions in the shells and seeds than other genes located in the candidate region. This study may help with marker-based breeding of peanuts with higher nutritional value and offers fresh insights into the genetic basis of the amino acids contents of peanuts.

Full text links 

Read article at publisher's site: https://doi.org/10.1111/ppl.14542

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Funding 

Funders who supported this work.

Basic and Applied Basic Research Foundation of Guangdong Province (1)

China Agriculture Research System of MOF and MARA (1)

Guangdong Provincial Key Research and Development Program-Modern Seed Industry (1)

Guangdong Science and Technology Plan Project (1)

Guangzhou Basic and Applied Basic Research Foundation (2)

National Key Research and Development Program of China (1)

National Natural Science Foundation of China (2)

Open Competition Program of Top Ten Critical Priorities of Agricultural Science and Technology Innovation for the 14th Five-Year Plan in Guangdong Province (1)

Special Fund for High Level Academy of Agriculture Science (5)

Special Support Program of Guangdong Province (1)