Mining QTL and genes for root traits and biochemical parameters under vegetative drought in South Indian genotypes of finger millet (Eleusine coracana (L.) Gaertn) by association mapping and in silico comparative genomics

David, Rolf; Ramakrishnan, Muthusamy; Maharajan, Theivanayagam; Barathikannan, Kaliyan; Babu, G. Atul; Daniel, Melvin A.; Agastian, Paul; Caesar, Sian; Ignacimuthu, S.

doi:10.1016/j.bcab.2021.101935

Cited by 17 publications

(5 citation statements)

References 79 publications

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“…The same group also identified eight QTL for root-and shoot-related traits under the same low-and high-phosphate conditions using 87 SSR markers in finger millet through association mapping [69]. Apart from this, 11 QTL related to shoot-, root-, and biochemical-related traits were identified in finger millet grown under drought stress [70]. Many QTL for various agro-morphological, yield, biomass, growth, and other related traits were detected in finger millet, pearl millet, foxtail millet, and proso millet by various researchers (Table 3).…”

Section: Qtl Associated With Various Traits In Major and Minor Milletsmentioning

confidence: 94%

Role of Genome Sequences of Major and Minor Millets in Strengthening Food and Nutritional Security for Future Generations

Maharajan,

Krishna,

Krishnakumar

et al. 2024

Agriculture

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Millets are small-seeded cereals belonging to the family Poaceae. They are considered to be climate-resilient and future nutritional food cereals for humans. Millets are resistant to biotic and abiotic stressors compared to other major cereals and thrive in low-quality soils with little maintenance and less rainfall. The importance of millets is still not well known to many people due to the lack of popularity and cultivation in semi-arid tropics of Asia and Africa. The United Nations has declared 2023 as the International Year of Millets (IYM 2023) to promote millet cultivation and popularize their health benefits globally. A few years ago, the application of molecular biology was in its infancy in millets due to the unavailability of genome sequences. Genome sequences are available for most of the millets on NCBI and Phytozome databases. In this review, we discuss the details of genome sequences for millets, candidate genes identified from the native genome of millets. The current status of quantitative trait loci and genome-wide association studies in millets are also discussed. The utilization of millet genome sequences in functional genomics research and translating the information for crop improvement will help millet and non-millet cereals survive harsh environments in the future. Such efforts will help strengthen food security and reduce malnutrition worldwide in 2050.

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Section: Qtl Associated With Various Traits In Major and Minor Milletsmentioning

confidence: 94%

Role of Genome Sequences of Major and Minor Millets in Strengthening Food and Nutritional Security for Future Generations

Maharajan,

Krishna,

Krishnakumar

et al. 2024

Agriculture

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“…Furthermore, the black-seeded types are tolerance to bird damage due to their high tannin content (Xiang et al, 2019). (3-7 basal tillers), number of fingers (6-9 per ear), root length (68-126 cm) and root weight per plant(14-33 g) (David et al, 2021;Oduori, 2008;Upadhyaya et al, 2010).…”

Section: Genetic Resourcesmentioning

confidence: 99%

“…Finger millet exhibits remarkable genetic variability for agronomic traits, nutritional compositions and root attributes. Reports indicate variability for grain yield (.7–8.0 t/ha), plant height (50–180 cm), flowering time (51–96 days), inflorescence dimensions (40–180 mm width, 30–190 mm length), panicle exsertion (0–215 mm), number of tillers (3–7 basal tillers), number of fingers (6–9 per ear), root length (68–126 cm) and root weight per plant(14–33 g) (David et al, 2021; Oduori, 2008; Upadhyaya et al, 2010).…”

Section: Genetic and Genomic Resources Of Finger Milletmentioning

confidence: 99%

“…Venkatesan et al (2021) employed ISSR markers for the accurate identification of traditional and hybrid varieties of finger millet, while Krishna et al (2020) used SSR, RAPD and ISSR to examine the genetic purity of F1 hybrids. Several studies reported the association of SSR markers with traits of interest (David et al, 2021; Lule et al, 2018; Ramakrishnan et al, 2018). The existing finger millet SSR markers can be integrated into the robust SNP linkage map (Pendergast et al, 2022) to further validate their associations with economic traits.…”

Section: Genetic and Genomic Resources Of Finger Milletmentioning

confidence: 99%

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Finger millet (Eleusine coracana) improvement: Challenges and prospects—A review

Gebreyohannes,

Shimelis,

Mashilo

et al. 2024

Plant Breeding

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Finger millet is a climate‐resilient and highly nutritious small grain crop widely grown in the semi‐arid tropics. It has multiple uses, including for food, feed and beverage preparations. However, finger millet is an under‐utilized and under‐researched crop with a mean yield of <1.0 t/ha despite a potential productivity of up to 8 t/ha. The yield gap is attributed to several production constraints, such as biotic and abiotic stresses, a lack of access to improved seeds and production inputs and poor agronomic management practices. There are valuable genetic resources and genetic variability of finger millet in its centres of diversity and global gene banks for variety design, product development and commercialization. The genetic variability can be harnessed further to integrate essential traits into candidate varieties through conventional and modern breeding methods. Breeding and genetic innovations such as genomics‐assisted breeding, mutation breeding and genome editing would accelerate finger millet breeding and new variety design and deployment. The objective of this review was to document the opportunities, challenges and prospects of finger millet improvement as a guide for variety development and deployment with enhanced grain yield and nutritional contents. The first section describes global production status and yield gains, major production and productivity challenges in finger millet. This is followed by an in‐depth presentation on breeding and genetic progress on variety development with improved agronomic and nutritional quality traits, drought and salinity tolerance, and fungal diseases, weeds and insect pest resistance. Further, the review summarized finger millet's genetic and genomic resources, reference genomes, whole genome re‐sequencing and transcriptomics of finger millet technologies, genetic engineering and genome editing and their integration with conventional breeding methods for variety design with desired end‐use traits. The review provides foundational information to expedite the development of new‐generation finger millet cultivars with desirable product profiles, including high grain yield potential, early maturity, desirable seed colour, compact head type, food and feed nutrients quality and high marketability through modern breeding approaches.

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“…In finger millet, QTL for plant-biomass-and growth-related traits under drought stress were evaluated via association mapping [43]. QTL associated with Ca content traits in finger millet were also evaluated with association mapping [44][45][46][47].…”

Section: Introductionmentioning

confidence: 99%

Identification of QTL Associated with Agro-Morphological and Phosphorus Content Traits in Finger Millet under Differential Phosphorus Supply via Linkage Mapping

et al. 2023

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Finger millet (Eleusine coracana (L.) Gaertn.) is one of the most important cereal crops for people in Asia and Africa. It supplies energy and nutrients for all people, particularly poor people in these continents. Phosphorus (P) is an essential macronutrient for plant growth and grain quality, so an adequate amount of P is required for healthy plant life. There is considerable evidence that P deficiency affects the growths and yields of all cereals, including finger millet. The present study aimed at identifying the quantitative trait loci (QTL) for various agro-morphological and P-content traits under low P (LP) and high P (HP) conditions through linkage mapping. Two cultivars, IE-2606 (low-P-susceptible) and PR-202 (low-P-tolerant) were used to develop 100 recombinant inbred lines (RILs). In total, 55 QTL, associated with various agro-morphological (primary root length (PRL), shoot fresh weight (SFW), root fresh weight (RFW), shoot dry weight (SDW), root dry weight (RDW), and root hair density (RHD)) and P-content traits (inorganic phosphate content in shoots (PiS), inorganic phosphate content in roots (PiR), and total P content in shoots (TPS)) were detected under LP conditions. Similarly, 37 QTL for various agro-morphological (PRL, RFW, SDW, and root hair length (RHL)) and P-content traits (PiS, PiR, TPS, and total P content in roots (TPR)) were detected under HP conditions. Biotic and abiotic stress-responsive candidate genes linked to a few QTL were also identified. The identified QTL associated with agro-morphological and P-content traits in finger millet under P deficiency could be used in breeding programs to develop finger millet with better P use efficiency (PUE). Furthermore, improving finger millet growth and yield under LP soil will help to reduce Pi application and eutrophication, which may help to improve the lives of poor farmers and maintain sustainable environments in Asia and African countries.

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Mining QTL and genes for root traits and biochemical parameters under vegetative drought in South Indian genotypes of finger millet (Eleusine coracana (L.) Gaertn) by association mapping and in silico comparative genomics

Cited by 17 publications

References 79 publications

Role of Genome Sequences of Major and Minor Millets in Strengthening Food and Nutritional Security for Future Generations

Role of Genome Sequences of Major and Minor Millets in Strengthening Food and Nutritional Security for Future Generations

Finger millet (Eleusine coracana) improvement: Challenges and prospects—A review

Identification of QTL Associated with Agro-Morphological and Phosphorus Content Traits in Finger Millet under Differential Phosphorus Supply via Linkage Mapping

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