Sustaining yield and nutritional quality of peanuts in harsh environments: Physiological and molecular basis of drought and heat stress tolerance

    Puppala, N and Nayak, S N and Sanz-Saez, A and Chen, C and Devi, M J and Nivedita, N and Bao, Y and He, G and Traore, S M and Wright, D A and Pandey, M K and Sharma, V (2023) Sustaining yield and nutritional quality of peanuts in harsh environments: Physiological and molecular basis of drought and heat stress tolerance. Frontiers in Genetics (TSI), 14. 01-24. ISSN 1664-8021

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    Abstract

    Climate change is significantly impacting agricultural production worldwide. Peanuts provide food and nutritional security to millions of people across the globe because of its high nutritive values. Drought and heat stress alone or in combination cause substantial yield losses to peanut production. The stress, in addition, adversely impact nutritional quality. Peanuts exposed to drought stress at reproductive stage are prone to aflatoxin contamination, which imposes a restriction on use of peanuts as health food and also adversely impact peanut trade. A comprehensive understanding of the impact of drought and heat stress at physiological and molecular levels may accelerate the development of stress tolerant productive peanut cultivars adapted to a given production system. Significant progress has been achieved towards the characterization of germplasm for drought and heat stress tolerance, unlocking the physiological and molecular basis of stress tolerance, identifying significant marker-trait associations as well major QTLs and candidate genes associated with drought tolerance, which after validation may be deployed to initiate marker-assisted breeding for abiotic stress adaptation in peanut. The proof of concept about the use of transgenic technology to add value to peanuts has been demonstrated. Advances in phenomics and artificial intelligence to accelerate the timely and cost-effective collection of phenotyping data in large germplasm/breeding populations have also been discussed. Greater focus is needed to accelerate research on heat stress tolerance in peanut. A suits of technological innovations are now available in the breeders toolbox to enhance productivity and nutritional quality of peanuts in harsh environments. A holistic breeding approach that considers drought and heat-tolerant traits to simultaneously address both stresses could be a successful strategy to produce climate-resilient peanut genotypes with improved nutritional quality.

    Item Type: Article
    Divisions: Center of Excellence in Genomics and Systems Biology
    CRP: UNSPECIFIED
    Uncontrolled Keywords: drought, heat stress, physiological, molecular, high-throughput phenotyping, introgression, transgenes and CRISPR
    Subjects: Mandate crops > Groundnut
    Others > Drought
    Depositing User: Mr Nagaraju T
    Date Deposited: 31 Jan 2024 03:10
    Last Modified: 31 Jan 2024 03:10
    URI: http://oar.icrisat.org/id/eprint/12405
    Official URL: https://www.frontiersin.org/articles/10.3389/fgene...
    Projects: UNSPECIFIED
    Funders: UNSPECIFIED
    Acknowledgement: UNSPECIFIED
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