Oryza glaberrima Steud.

Ndjiondjop, Marie Noëlle; Wambugu, Peterson W.; Sangaré, Jean Rodrigue; Dro, Tia; Kpeki, Sèdjro Bienvenu; Gnikoua, Karlin

doi:10.1007/978-3-319-71997-9_9

Cited by 8 publications

(8 citation statements)

References 96 publications

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“…Candidate gene analysis, Quantitative Trait Loci (QTL) mapping and linkage analysis have played pivotal roles in studying genetic mechanisms underlying domestication traits. In African rice, these studies are being aided by the availability of extensive genetic resources conserved in genebanks (Ndjiondjop et al 2018a ; Wambugu et al 2013 ), availability of various types of advanced mapping populations (Doi et al 1997 ; Win et al 2017 ; Wu et al 2018 ) and diverse types of genomic resources including genome reference sequences (Monat et al 2017 ; Sakai et al 2011 ; Stein et al 2018 ; Wang et al 2014 ). Compared to Asian rice, relatively little is known about the molecular and genetic basis of domestication traits in African rice (Furuta et al 2015 ; Hu et al 2018 ; Win et al 2017 ).…”

Section: Reviewmentioning

confidence: 99%

Genetics and Genomics of African Rice (Oryza glaberrima Steud) Domestication

Wambugu

Ndjiondjop

Henry

2021

Rice

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African rice (Oryza glaberrima Steud) is one of the two independently domesticated rice species, the other one being Asian rice (Oryza sativa L.). Despite major progress being made in understanding the evolutionary and domestication history of African rice, key outstanding issues remain controversial. There appears to be an underlying difficulty in identifying the domestication centre and number of times the crop has been domesticated. Advances in genomics have provided unprecedented opportunities for understanding the genetic architecture of domestication related traits. For most of the domestication traits, the underlying genes and mutations have been identified. Comparative analysis of domestication genes between Asian and African rice has revealed that the two species went through an independent but convergent evolution process. The genetic and developmental basis of some of the domestic traits are conserved not only between Asian and African rice but also with other domesticated crop species. Analysis of genome data and its interpretation is emerging as a major challenge facing studies of domestication in African rice as key studies continue giving contradictory findings and conclusions. Insights obtained on the domestication of this species are vital for guiding crop improvement efforts.

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Section: Reviewmentioning

confidence: 99%

Genetics and Genomics of African Rice (Oryza glaberrima Steud) Domestication

Wambugu

Ndjiondjop

Henry

2021

Rice

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“…Recently, Meyer, et al [8] generated a genome wide SNP map that contained a total of 2.32 million SNPs by resequencing a total of 93 landraces. Molecular characterization of the O. glaberrima accessions conserved in AfricaRice genebank using diversity arrays technology (DArTseq) led to the identification of 3834 polymorphic SNPs [59]. Over 1.4 million Simple Sequence Repeats (SSR) have been identified in the African rice genome [46,47] providing a useful set of genetic markers.…”

Section: Genomic and Transcriptomic Resourcesmentioning

confidence: 99%

“…Genetic variation in African rice was reported to be the lowest for all grass species and perhaps for all domesticated crop species [64,65]. As noted by Ndjiondjop et al [59], it might appear puzzling how a species with such narrow genetic base can possess such unique and exceptional genetic potential in terms of broad resistance to a variety of biotic and abiotic stresses. However, this situation does not seem to be unique as other studies have reported a negative correlation between neutral and functional diversity [66].…”

Section: Genomic and Transcriptomic Resourcesmentioning

confidence: 99%

“…A total of 2927 accessions were genotyped with 31,739 DArTseq-based SNP markers. This data has assisted in identification of duplicates, constitution of core and mini-core collections as well as identifying human errors during various genebank operations [59,73]. SNP genotyping is assisting in revealing cases of taxonomic misidentification [74] which is common in genebanks and negatively impacts deployment of genetic resources in plant breeding and other research purposes.…”

Section: Supporting the Conservation And Utilization Of African Rimentioning

confidence: 99%

“…Major initiatives aimed at exploiting the vast genetic potential of African rice through intra and inter-specific crossing are currently underway. These initiatives include, Rapid Alleles Mobilization (RAM) and Methodologies and new resources for genotyping and phenotyping (MENERGEP) of African rice species and their pathogens for developing strategic disease resistance breeding programs, both of which are being implemented by AfricaRice and other partners [59].…”

Section: Supporting the Conservation And Utilization Of African Rimentioning

confidence: 99%

See 2 more Smart Citations

Advances in Molecular Genetics and Genomics of African Rice (Oryza glaberrima Steud)

Wambugu

Ndjiondjop

Henry

2019

Plants

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African rice (Oryza glaberrima) has a pool of genes for resistance to diverse biotic and abiotic stresses, making it an important genetic resource for rice improvement. African rice has potential for breeding for climate resilience and adapting rice cultivation to climate change. Over the last decade, there have been tremendous technological and analytical advances in genomics that have dramatically altered the landscape of rice research. Here we review the remarkable advances in knowledge that have been witnessed in the last few years in the area of genetics and genomics of African rice. Advances in cheap DNA sequencing technologies have fuelled development of numerous genomic and transcriptomic resources. Genomics has been pivotal in elucidating the genetic architecture of important traits thereby providing a basis for unlocking important trait variation. Whole genome re-sequencing studies have provided great insights on the domestication process, though key studies continue giving conflicting conclusions and theories. However, the genomic resources of African rice appear to be under-utilized as there seems to be little evidence that these vast resources are being productively exploited for example in practical rice improvement programmes. Challenges in deploying African rice genetic resources in rice improvement and the genomics efforts made in addressing them are highlighted.

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Wild Oryza for Quality Improvement

Hasan

Henry

2020

The Future of Rice Demand: Quality Beyond Productivity

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Oryza glaberrima Steud.

Cited by 8 publications

References 96 publications

Genetics and Genomics of African Rice (Oryza glaberrima Steud) Domestication

Genetics and Genomics of African Rice (Oryza glaberrima Steud) Domestication

Advances in Molecular Genetics and Genomics of African Rice (Oryza glaberrima Steud)

Wild Oryza for Quality Improvement

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