Genetic Diversity and Population Structure in a Regional Collection of Kersting’s Groundnut (&lt;em&gt;Macrotyloma geocarpum &lt;/em&gt;(Harms) Maréchal &amp; Baudet)

Kafoutchoni, Konoutan Médard; Agoyi, Eric Etchikinto; Agbahoungba, Symphorien; Assogbadjo, Achille Ephrem; Agbangla, Clément

doi:10.20944/preprints202009.0097.v1

Cited by 3 publications

(10 citation statements)

References 66 publications

(91 reference statements)

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“…Yet these services have been described as the main conduit for disseminating information on farm technologies, support rural adult learning and assist farmers in developing their farm technical and managerial skills (Danso-Abbeam et al 2018). Extension agents also serve as feedback channels between farmers and the global research community with respect to proven best practices (Kabunga et al 2011). In some cases, these services have been digitized and therefore capable of reaching farmers using mobile phones in some of the remotest of villages (Fu and Akter 2016), as long as the verified information on the target crop is available.…”

Section: Underdeveloped Extension Services and Seed Systemsmentioning

confidence: 99%

“…More recently, DArT has been combined with NGS in a procedure called DArT-sequencing (DArT-seq) (Sansaloni et al 2011 ) that enables high throughput genotyping for rapid SNP discovery in many orphan crops. DArT sequencing is now being used in the characterization of many climate-resilient orphan crops including Bambara groundnut (Redjeki et al 2020 ), finger millet (Dida et al 2020 ), Kersting’s groundnut ( Kerstingiella geocarpa ) (Kafoutchoni et al 2020 ), lupin ( Lupinus albus ) (Raman et al 2014) and grass pea (Almeida et al 2016 ).…”

Section: Development Of Genetic and Genomic Resources In Climate Resilient Orphan Cropsmentioning

confidence: 99%

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Genetics and breeding for climate change in Orphan crops

et al. 2021

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Climate change is rapidly changing how we live, what we eat and produce, the crops we breed and the target traits. Previously underutilized orphan crops that are climate resilient are receiving much attention from the crops research community, as they are often the only crops left in the field after periods of extreme weather conditions. There are several orphan crops with incredible resilience to biotic and abiotic stresses. Some are nutritious, while others provide good sources of biofuel, medicine and other industrial raw materials. Despite these benefits, orphan crops are still lacking in important genetic and genomic resources that could be used to fast track their improvement and make their production profitable. Progress has been made in generating draft genomes of at least 28 orphan crops over the last decade, thanks to the reducing cost of sequencing. The implementation of a structured breeding program that takes advantage of additional modern crop improvement tools such as genomic selection, speed breeding, genome editing, high throughput phenotyping and breeding digitization would make rapid improvement of these orphan crops possible, but would require coordinated research investment. Other production challenges such as lack of adequate germplasm conservation, poor/non-existent seed systems and agricultural extension services, as well as poor marketing channels will also need to be improved if orphan crops were to be profitable. We review the importance of breeding orphan crops under the increasing effects of climate change, highlight existing gaps that need to be addressed and share some lessons to be learned from major crops.

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Section: Underdeveloped Extension Services and Seed Systemsmentioning

confidence: 99%

Section: Development Of Genetic and Genomic Resources In Climate Resilient Orphan Cropsmentioning

confidence: 99%

Genetics and breeding for climate change in Orphan crops

et al. 2021

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“…Advancements in molecular plant breeding would be an importance of paramount to increase the genetic gains and make more accurate the breeding process. In the particular case of KG, currently, available partial GBS data 16,34 would allow the analyses of intraspeci c genetic clusters based on gene network variation for various important phenotypic traits (e.g. : grain yield, yield-related traits, owering time).…”

Section: Implications Of Sdm Results For Selection For Adaptationmentioning

confidence: 99%

“…Recent molecular studies involving 281 individuals from Benin and Togo identi ed two major genetic clusters of KG and these two groups were distributed across Southern-Sudanian and Northern-Guinean agroclimatic zones 16 . Kafoutchoni, et al 34 also assessed the genetic structure of the species through the GBS approach and Discriminant analysis of principal components (DAPC) and found eight genetically distinct groups from ve origins. In this context, the following questions are of high interest: do the agroclimatic niches of KG vary with climate changes?…”

Section: Introductionmentioning

confidence: 99%

Ecological-niche modeling of genetically distinct populations revealed Kersting’s groundnut [Macrotyloma geocarpum (Harms) Maréchal et Baudet] as a resilient orphan crop to present and future climates

Coulibaly

Idohou²,

Akohoue

et al. 2021

Preprint

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Orphan legume crops play an important role in smallholder farmers’ food systems. Though less documented, they have the potential to contribute to adequate nutrition in vulnerable communities. Unfortunately, data are scarce about the potential of those crops to withstand current and future climate variations. Using Macrotyloma geocarpum as an example, we used genetically informed ecological niche models to explore the role of ecology on the current and future distributions of genetic populations of Kersting’s groundnut. Three main conclusions emerged: i) the models had good predictive power, indicating that M. geocarpum’s distribution was correlated with both climatic and soil layers; ii) identity and similarity tests revealed that the two genetic groups while overlapping, are each, locally adapted and display differences in climate suitability; iii) by integrating the genetic information in niche modeling, niches projections show divergence in the response of the species and genetic populations to ongoing climate change. This study highlights the importance of incorporating genetic data into ENM approaches to obtain a finer information of species’ future distribution, and explores the implications for agricultural adaptation, with a particular focus on identifying priority actions in orphan crops conservation and breeding.

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“…Initial researches on KG included ethnobotanical studies, analysis of genetic diversity to assist breeding programs in selecting diverse parental material based on morphological (Bayorbor et al, 2010;Assogba et al, 2015;Akohoue et al, 2019) and biochemical markers (Pasquet et al, 2002). More recently, molecular markers including SSRs and SNPs were used to harness the genetic diversity among and within KG landraces (Mohammed et al, 2018;Kafoutchoni et al, 2021a), and analyze the marker-trait association and genomic prediction accuracy (Akohoue et al, 2020). However, basic and accurate knowledge about physiology, resistance/tolerance to biotic and abiotic stresses, and the genetic basis underpinning traits of interest is still lacking for this species.…”

Section: Introductionmentioning

confidence: 99%

Profiling Cultivars Development in Kersting's Groundnut [Macrotyloma geocarpum (Harms) Maréchal and Baudet] for Improved Yield, Higher Nutrient Content, and Adaptation to Current and Future Climates

Coulibaly

Bodjrenou

Akohoue

et al. 2022

Front. Sustain. Food Syst.

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Kersting's groundnut [Macrotyloma geocarpum (Harms.) Maréchal and Baudet], Fabaceae, is an important source of protein and essential amino acids. As a grain legume species, it also contributes to improving soil fertility through symbiotic nitrogen fixation. However, the crop is characterized by a relatively low yield (≤500 kg/ha), and limited progress has been made so far, toward the development of high-yielding cultivars that can enhance and sustain its productivity. Recently, there was an increased interest in alleviating the burdens related to Kersting's groundnut (KG) cultivation through the development of improved varieties. Preliminary investigations assembled germplasms from various producing countries. In-depth ethnobotanical studies and insightful investigation on the reproductive biology of the species were undertaken alongside morphological, biochemical, and molecular characterizations. Those studies revealed a narrow genetic base for KG. In addition, the self-pollinating nature of its flowers prevents cross-hybridization and represents a major barrier limiting the broadening of the genetic basis. Therefore, the development of a research pipeline to address the bottlenecks specific to KG is a prerequisite for the successful expansion of the crop. In this paper, we offer an overview of the current state of research on KG and pinpoint the knowledge gaps; we defined and discussed the main steps of breeding for KG' cultivars development; this included (i) developing an integrated genebank, inclusive germplasm, and seed system management; (ii) assessing end-users preferences and possibility for industrial exploitation of the crop; (iii) identifying biotic and abiotic stressors and the genetic control of responsive traits to those factors; (iv) overcoming the cross-pollination challenges in KG to propel the development of hybrids; (v) developing new approaches to create variability and setting adequate cultivars and breeding approaches; (vi) karyotyping and draft genome analysis to accelerate cultivars development and increase genetic gains; and (vii) evaluating the adaptability and stability of cultivars across various ecological regions.

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Genetic Diversity and Population Structure in a Regional Collection of Kersting’s Groundnut (<em>Macrotyloma geocarpum </em>(Harms) Maréchal & Baudet)

Cited by 3 publications

References 66 publications

Genetics and breeding for climate change in Orphan crops

Genetics and breeding for climate change in Orphan crops

Ecological-niche modeling of genetically distinct populations revealed Kersting’s groundnut [Macrotyloma geocarpum (Harms) Maréchal et Baudet] as a resilient orphan crop to present and future climates

Profiling Cultivars Development in Kersting's Groundnut [Macrotyloma geocarpum (Harms) Maréchal and Baudet] for Improved Yield, Higher Nutrient Content, and Adaptation to Current and Future Climates

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