Recent Developments in Wild Rice Conservation, Research, and Use

Banaticla-Hilario, Maria Celeste N.; Sajise, A.G.

doi:10.1007/978-981-16-7699-4_3

Cited by 2 publications

(2 citation statements)

References 117 publications

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“…Many biotic stress resistance genes were already cloned from wild germplasm (see Tables 1 – 3 ), such as BPH14 ( O. officinalis ), Pi9 ( Oryza minuta ), and Xa21 ( O. longistaminata ). More than 4,500 accessions of wild rice species are stored in the IRRI Genebank ( Banaticla-Hilario and Sajise, 2022 ), and most of the germplasms were not screened yet. Recently, a genome-wide InDel marker set (475 polymorphic markers) discriminating the alleles between O. sativa and the other seven AA-genome Oryza species was developed to harness AA-genome wild species ( Hechanova et al., 2021 ).…”

Section: Conclusion and Perspectivementioning

confidence: 99%

Available cloned genes and markers for genetic improvement of biotic stress resistance in rice

Simon,

Hechanova,

Hernandez

et al. 2023

Front. Plant Sci.

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Biotic stress is one of the major threats to stable rice production. Climate change affects the shifting of pest outbreaks in time and space. Genetic improvement of biotic stress resistance in rice is a cost-effective and environment-friendly way to control diseases and pests compared to other methods such as chemical spraying. Fast deployment of the available and suitable genes/alleles in local elite varieties through marker-assisted selection (MAS) is crucial for stable high-yield rice production. In this review, we focused on consolidating all the available cloned genes/alleles conferring resistance against rice pathogens (virus, bacteria, and fungus) and insect pests, the corresponding donor materials, and the DNA markers linked to the identified genes. To date, 48 genes (independent loci) have been cloned for only major biotic stresses: seven genes for brown planthopper (BPH), 23 for blast, 13 for bacterial blight, and five for viruses. Physical locations of the 48 genes were graphically mapped on the 12 rice chromosomes so that breeders can easily find the locations of the target genes and distances among all the biotic stress resistance genes and any other target trait genes. For efficient use of the cloned genes, we collected all the publically available DNA markers (~500 markers) linked to the identified genes. In case of no available cloned genes yet for the other biotic stresses, we provided brief information such as donor germplasm, quantitative trait loci (QTLs), and the related papers. All the information described in this review can contribute to the fast genetic improvement of biotic stress resistance in rice for stable high-yield rice production.

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Section: Conclusion and Perspectivementioning

confidence: 99%

Available cloned genes and markers for genetic improvement of biotic stress resistance in rice

Simon,

Hechanova,

Hernandez

et al. 2023

Front. Plant Sci.

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“…In Oryza genus, there are more than 20 wild species, including 6 AA-genome wild rice species, namely O. rufipogon , O. nivara, O. longistaminata, O. meridionalis , O. glumaepatula , and O. barthi , which are important reservoirs of beneficial genes for rice breeding (Brar and Khush 1997 ; Khush 1997 ). Besides, interspecific gene flow could be used in enhancing the effectiveness and efficiency of conservation method for wild rice species (Banaticla et al 2022 ). O. rufipogon is considered as the most popular and influential wild rice species in the gene introgression to the cultivated rice through interspecific hybridization, while O. nivara belongs to the same complex with O. rufipogon .…”

Section: Introductionmentioning

confidence: 99%

Substitution Mapping and Allelic Variations of the Domestication Genes from O. rufipogon and O. nivara

Wang,

Guo,

Zou

et al. 2023

Rice

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Background Domestication from wild rice species to cultivated rice is a key milestone, which involved changes of many specific traits and the variations of the genetic systems. Among the AA-genome wild rice species, O. rufipogon and O. nivara, have many favorable genes and thought to be progenitors of O. sativa. Results In the present study, by using O. rufipogon and O. nivara as donors, the single segment substitution lines (SSSLs) have been developed in the background of the elite indica cultivar, HJX74. In the SSSLs population, 11 genes for 5 domestication traits, including tiller angle, spreading panicle, awn, seed shattering, and red pericarp, were identified and mapped on 5 chromosomes through substitution mapping. Herein, allelic variations of 7 genes were found through sequence alignment with the known genes, that is, TA7-RUF was allelic to PROG1, TA8-RUF was allelic to TIG1, SPR4-NIV was allelic to OsLG1, AN4-RUF was allelic to An-1, SH4-NIV was allelic to SH4, and both RC7-RUF and RC7-NIV were allelic to Rc. Meanwhile, 4 genes, TA11-NIV, SPR3-NIV, AN3-NIV, and AN4-NIV, were considered as the novel genes identified in these SSSLs, because of none known genes for the related domestication traits found in the chromosomal locations of them. Conclusion The results indicated that the SSSLs would be precious germplasm resources for gene mining and utilization from wild rice species, and it laid the foundation for further analyses of the novel domestication genes to better understand the genetic basis in regulating the traits variation during domestication.

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Recent Developments in Wild Rice Conservation, Research, and Use

Cited by 2 publications

References 117 publications

Available cloned genes and markers for genetic improvement of biotic stress resistance in rice

Available cloned genes and markers for genetic improvement of biotic stress resistance in rice

Substitution Mapping and Allelic Variations of the Domestication Genes from O. rufipogon and O. nivara

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