Contribution of Chromosomes 1HchS and 6HchS to Fertility Restoration in the Wheat msH1 CMS System under Different Environmental Conditions

Castillo, A. M.; Rodríguez-Suárez, Cristina; Martín, Azahara C.; Pistón, Fernando

doi:10.1371/journal.pone.0121479

Cited by 10 publications

(6 citation statements)

References 18 publications

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“…CMS evades the need for manual removal of anthers, thus facilitating a technology to produce unlimited numbers of hybrid plants. It has been successfully used in crops such as rye, rice, maize, and sunflower ( Castillo et al, 2015 ). The use of T. timopheevii cytoplasm in bread and durum wheat creates male sterility, whereas female fertility is not impaired.…”

Section: Introductionmentioning

confidence: 99%

Identification of Rf9, a Gene Contributing to the Genetic Complexity of Fertility Restoration in Hybrid Wheat

et al. 2020

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Wheat (Triticum aestivum L.) is a self-pollinating crop whose hybrids offer the potential to provide a major boost in yield. Male sterility induced by the cytoplasm of Triticum timopheevii is a powerful method for hybrid seed production. Hybrids produced by this method are often partially sterile, and full fertility restoration is crucial for wheat production using hybrid cultivars. To identify the genetic loci controlling fertility restoration in wheat, we produced two cytoplasmic male-sterile (CMS) backcross (BC1) mapping populations. The restorer lines Gerek 79 and 71R1203 were used to pollinate the male-sterile winter wheat line CMS-Sperber. Seed set and numbers of sterile spikelets per spike were evaluated in 340 and 206 individuals of the populations derived from Gerek 79 and 71R1203, respectively. Genetic maps were constructed using 930 and 994 single nucleotide polymorphism (SNP) markers, spanning 2,160 and 2,328 cM over 21 linkage groups in the two populations, respectively. Twelve quantitative trait loci (QTL) controlled fertility restoration in both BC1 populations, including a novel restorer-of-fertility (Rf) locus flanked by the SNP markers IWB72413 and IWB1550 on chromosome 6AS. The locus was mapped as a qualitative trait in the BC1 Gerek 79 population and was designated Rf9. One hundred-nineteen putative candidate genes were predicted within the QTL region on chromosome 6AS. Among them were genes encoding mitochondrial transcription termination factor and pentatricopeptide repeat-containing proteins that are known to be associated with fertility restoration. This finding is a promising step to better understand the functions of genes for improving fertility restoration in hybrid wheat.

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Section: Introductionmentioning

confidence: 99%

Identification of Rf9, a Gene Contributing to the Genetic Complexity of Fertility Restoration in Hybrid Wheat

et al. 2020

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“…Although their performance against STB was not evaluated, they were considered a valuable tool for durum wheat breeding [23]. Similarly, many examples of successful introgression of H. chilense into wheat genetic background are available [24][25][26][27][28][29][30][31][32][33][34]. H. chilense-wheat translocation lines have been developed (Table 2).…”

Section: Progress In Breeding For Agronomic Performancementioning

confidence: 99%

“…Mildew and greenbug resistance [20]; Hordeoindolines [43]; Salt tolerance [42]; Carotenoid genes [39] TL in BW [27]; TL in DW [38] 6H ch Fertility restoration [27,34,37,38] TL in BW [28,29,31] 7H ch…”

Section: Progress In Breeding For Agronomic Performancementioning

confidence: 99%

Tritordeum: Creating a New Crop Species—The Successful Use of Plant Genetic Resources

Ávila

Rodríguez-Suárez

Atienza

2021

Plants

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Hexaploid tritordeum is the amphiploid derived from the cross between the wild barley Hordeum chilense and durum wheat. This paper reviews the main advances and achievements in the last two decades that led to the successful development of tritordeum as a new crop. In particular, we summarize the progress in breeding for agronomic performance, including the potential of tritordeum as a genetic bridge for wheat breeding; the impact of molecular markers in genetic studies and breeding; and the progress in quality and development of innovative food products. The success of tritordeum as a crop shows the importance of the effective utilization of plant genetic resources for the development of new innovative products for agriculture and industry. Considering that wild plant genetic resources have made possible the development of this new crop, the huge potential of more accessible resources, such as landraces conserved in gene banks, goes beyond being sources of resistance to biotic and abiotic stresses. In addition, the positive result of tritordeum also shows the importance of adequate commercialization strategies and demonstrative experiences aimed to integrate the whole food chain, from producers to end-point sellers, in order to develop new products for consumers.

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“…CMS evades the need for manual 70 removal of anthers, thus facilitating a technology to produce unlimited numbers for hybrid plants. It has 71 been successfully used in crops such as rye, rice, maize and sunflower (Castillo et al 2015). In wheat, 72 the outcome of a hybridization event involving T. timopheevii as the female parent and Triticum 73 aestivum (Bohra et al 2016) causes CMS.…”

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confidence: 99%

“…Fertility restoration is a genetically complex process and is mainly controlled by the mitochondrial 92 genome in interaction with Rf genes (Castillo et al 2014). Besides, it is known that fertility restoration 93 is influenced by environmental factors including photoperiod, water stress, light intensity and 94 temperature (Castillo et al 2015). The mitochondrial gene families produce proteins that share the 95 common structural organization of similar repeated helical motifs and include half-tetratricopeptides, 96 pentatricopeptide repeat (PPR) proteins, and mitochondrial transcription termination factors (mTERF) 97 Germany.…”

mentioning

confidence: 99%

Identification of a new geneRf9and unravelling the genetic complexity for controlling fertility restoration in hybrid wheat

Shahinnia

Geyer

Block

et al. 2020

Preprint

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31Wheat (Triticum aestivum L.) is a self-pollinating crop whose hybrids offer the potential to provide a major boost 32 in yield. Male sterility induced by the cytoplasm of Triticum timopheevii is a powerful method for hybrid seed 33 production. Hybrids produced by this method are often partially sterile and full fertility restoration is crucial for 34 wheat production using hybrid cultivars. To identify genetic loci controlling fertility restoration in wheat, we 35 produced two CMS-based backcross (BC1) mapping populations. The restorer lines Gerek 79 and 71R1203 were 36 used to pollinate the male-sterile winter wheat line CMS-Sperber. Seed set and numbers of sterile spikelets per 37 spike were evaluated in 340 and 206 individuals of the populations derived from Gerek 79 and 71R1203, 38 respectively. Genetic maps were constructed using 930 and 994 SNPs, spanning 2,160 and 2,328 cM over 21 39 linkage groups in the two populations, respectively. Twelve quantitative trait loci (QTL) controlled fertility 40 restoration in both BC1 populations, including a novel restorer-of-fertility (Rf) locus flanked by the single 41 nucleotide polymorphism (SNP) markers IWB72413 and IWB1550 on chromosome 6AS. The locus was mapped 42 as a qualitative trait in the BC1 Gerek 79 population and was designated Rf9. Ninety-three putative candidate genes 43 were predicted for the QTL region on chromosome 6AS. Among them were genes encoding tetratricopeptide and 44 pentatricopeptide repeat-containing proteins in rice known to be associated with fertility restoration. This finding 45 is a promising step to better understand the functions of genes for improving hybrid wheat. 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 Since the discovery of male sterility and restoration systems in the 1960s, hybrid wheat triggered attention due to 62 its potential for improved grain and straw productivity and yield stability particularly under harsh and marginal 63 environments (Longin et al. 2012; Whitford et al. 2013). The major gains of hybrid versus line varieties are 64 improved trait values due to heterosis (Castillo et al. 2014). Heterosis or hybrid vigor is the phenomenon by which 65 the progeny derived from a cross of two inbred lines outperform the parent lines and has provided considerable 66 economic benefits in worldwide crop production (Chen and Liu 2014). Heterosis in winter wheat has been reported 67 to provide uniform plant establishment and tolerance against frost, lodging, and diseases such as leaf rust, stripe 68 rust, Septoria tritici blotch and powdery mildew (Gupta et al. 2019). 69To harness yield gains associated with hybrid vigor, the cytoplasmic male sterility (CMS) system provides a cost-70 effective tool for efficient hybrid seed production (Chen and Liu 2014). CMS in plants is based on rearrangements 71 of mitochondrial DNA that lead to chimaeric genes and a condition under which a plant is unable to produce fertile 72 pollen (Whitford et al. 2013). CMS evades the need for manual removal of anthers, thus facilitating a technolo...

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Contribution of Chromosomes 1HchS and 6HchS to Fertility Restoration in the Wheat msH1 CMS System under Different Environmental Conditions

Cited by 10 publications

References 18 publications

Identification of Rf9, a Gene Contributing to the Genetic Complexity of Fertility Restoration in Hybrid Wheat

Identification of Rf9, a Gene Contributing to the Genetic Complexity of Fertility Restoration in Hybrid Wheat

Tritordeum: Creating a New Crop Species—The Successful Use of Plant Genetic Resources

Identification of a new geneRf9and unravelling the genetic complexity for controlling fertility restoration in hybrid wheat

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