Fine mapping of <i>Rf2</i>, a major locus controlling pollen fertility restoration in sorghum A<sub>1</sub> cytoplasm, encodes a <scp>PPR</scp> gene and its validation through expression analysis

Madugula, Praveen; Uttam, Anurag G.; Tonapi, Vilas A.; Madhusudhana, R.

doi:10.1111/pbr.12569

Cited by 21 publications

(11 citation statements)

References 62 publications

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“…When the F 1 progeny is male-sterile, the tropical accession is classified as a maintainer (i.e., B line) and assigned to the A/B parental gene pool. In addition to the low frequency of maintainer lines among temperate-adapted and tropical germplasm (Madugula et al 2018), new maintainer lines also need to be able of produce F 1 progeny male-sterile under broad environments where sorghum breeding is possible. Today, less than 2% of the NPGS tropical germplasm has been classified into the A/B parental gene pools.…”

Section: Sorghum Hybrid Seeds Productionmentioning

confidence: 99%

Sorghum genetic, genomic, and breeding resources

Xin

Wang²,

Cuevas

et al. 2021

Planta

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Main conclusion Sorghum research has entered an exciting and fruitful era due to the genetic, genomic, and breeding resources that are now available to researchers and plant breeders. Abstract As the world faces the challenges of a rising population and a changing global climate, new agricultural solutions will need to be developed to address the food and fiber needs of the future. To that end, sorghum will be an invaluable crop species as it is a stress-resistant C4 plant that is well adapted for semi-arid and arid regions. Sorghum has already remained as a staple food crop in many parts of Africa and Asia and is critically important for animal feed and niche culinary applications in other regions, such as the United States. In addition, sorghum has begun to be developed into a promising feedstock for forage and bioenergy production. Due to this increasing demand for sorghum and its potential to address these needs, the continuous development of powerful community resources is required. These resources include vast collections of sorghum germplasm, high-quality reference genome sequences, sorghum association panels for genome-wide association studies of traits involved in food and bioenergy production, mutant populations for rapid discovery of causative genes for phenotypes relevant to sorghum improvement, gene expression atlas, and online databases that integrate all resources and provide the sorghum community with tools that can be used in breeding and genomic studies. Used in tandem, these valuable resources will ensure that the rate, quality, and collaborative potential of ongoing sorghum improvement efforts is able to rival that of other major crops.

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Section: Sorghum Hybrid Seeds Productionmentioning

confidence: 99%

Sorghum genetic, genomic, and breeding resources

Xin

Wang²,

Cuevas

et al. 2021

Planta

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“…All the genes encode proteins with a mitochondrial transit peptide and numerous pentatricopeptide repeat (PPR) motifs. Rf1 and Rf2 can restore pollen fertility restoration ability on A1 cytoplasm, and Rf6 controls pollen fertility restoration ability on A1 and A2 cytoplasm in sorghum (Klein et al 2005 ; Praveen et al 2015 ; Madugula et al 2018 ).…”

Section: Genomic Research In Sorghummentioning

confidence: 99%

Sorghum breeding in the genomic era: opportunities and challenges

Hao

Leng

et al. 2021

Theor Appl Genet

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Key message The importance and potential of the multi-purpose crop sorghum in global food security have not yet been fully exploited, and the integration of the state-of-art genomics and high-throughput technologies into breeding practice is required. Abstract Sorghum, a historically vital staple food source and currently the fifth most important major cereal, is emerging as a crop with diverse end-uses as food, feed, fuel and forage and a model for functional genetics and genomics of tropical grasses. Rapid development in high-throughput experimental and data processing technologies has significantly speeded up sorghum genomic researches in the past few years. The genomes of three sorghum lines are available, thousands of genetic stocks accessible and various genetic populations, including NAM, MAGIC, and mutagenised populations released. Functional and comparative genomics have elucidated key genetic loci and genes controlling agronomical and adaptive traits. However, the knowledge gained has far away from being translated into real breeding practices. We argue that the way forward is to take a genome-based approach for tailored designing of sorghum as a multi-functional crop combining excellent agricultural traits for various end uses. In this review, we update the new concepts and innovation systems in crop breeding and summarise recent advances in sorghum genomic researches, especially the genome-wide dissection of variations in genes and alleles for agronomically important traits. Future directions and opportunities for sorghum breeding are highlighted to stimulate discussion amongst sorghum academic and industrial communities.

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“…Plant CMS is usually caused by mutations, rearrangements, or recombinations of mitochondrial DNA, and in many instances, male fertility can be restored specifically by restorer-of-fertility (Rf ) genes in the nuclear genome [8,9]. To date, more than ten Rf genes have been cloned and functionally characterized in various crop species, and the majority of them were found to encode PPR protein, including Rf1a [10], Rf1b [11], Rf3 [12], Rf4 [13], Rf5 [14], Rf6 [15] in rice; Rfo [16], PPR-B [17], RsRf3-4 [18], Rfk1 [19] in radish; Rf1 [20], Rf2 [21] in sorghum; Rfp [22], Rfn [23] in rapeseed; Rf-PPR592 [24] in petunia; BrRfp1 [25] in Chinese cabbage; and Rfm1 [26] in barley. With the exception of the sorghum Rf1 [20] and the barely Rfm1 [26], the PPR-type Rf genes encode PPR proteins belonging to P class.…”

Section: Functions Of Ppr Proteins In Cytoplasmic Male Sterilitymentioning

confidence: 99%

Functions of PPR Proteins in Plant Growth and Development

Sun

Liu

et al. 2021

IJMS

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Pentatricopeptide repeat (PPR) proteins form a large protein family in land plants, with hundreds of different members in angiosperms. In the last decade, a number of studies have shown that PPR proteins are sequence-specific RNA-binding proteins involved in multiple aspects of plant organellar RNA processing, and perform numerous functions in plants throughout their life cycle. Recently, computational and structural studies have provided new insights into the working mechanisms of PPR proteins in RNA recognition and cytidine deamination. In this review, we summarized the research progress on the functions of PPR proteins in plant growth and development, with a particular focus on their effects on cytoplasmic male sterility, stress responses, and seed development. We also documented the molecular mechanisms of PPR proteins in mediating RNA processing in plant mitochondria and chloroplasts.

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Fine mapping of Rf2, a major locus controlling pollen fertility restoration in sorghum A₁ cytoplasm, encodes a PPR gene and its validation through expression analysis

Cited by 21 publications

References 62 publications

Sorghum genetic, genomic, and breeding resources

Sorghum genetic, genomic, and breeding resources

Sorghum breeding in the genomic era: opportunities and challenges

Functions of PPR Proteins in Plant Growth and Development

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Fine mapping of Rf2, a major locus controlling pollen fertility restoration in sorghum A1 cytoplasm, encodes a PPR gene and its validation through expression analysis

Cited by 21 publications

References 62 publications

Sorghum genetic, genomic, and breeding resources

Sorghum genetic, genomic, and breeding resources

Sorghum breeding in the genomic era: opportunities and challenges

Functions of PPR Proteins in Plant Growth and Development

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Product

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Fine mapping of Rf2, a major locus controlling pollen fertility restoration in sorghum A₁ cytoplasm, encodes a PPR gene and its validation through expression analysis