Overcoming self-incompatibility in grasses: a pathway to hybrid breeding

Canto, Javier Do; Studer, Bruno; Lübberstedt, Thomas

doi:10.1007/s00122-016-2775-2

Cited by 31 publications

(37 citation statements)

References 111 publications

(142 reference statements)

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“…In practice, SC can be introgressed into populations of allogamous grasses by backcrossing. The derived inbred lines can be selected for heterozygosity at the S-locus using molecular markers, which would allow restoration of SI in the final synthetic varieties (Do Canto et al, 2016).…”

Section: Ways Of Achieving Sc and Its Role In Hybrid Breedingmentioning

confidence: 99%

Self-(In)compatibility Systems: Target Traits for Crop-Production, Plant Breeding, and Biotechnology

et al. 2020

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Self-incompatibility (SI) mechanisms prevent self-fertilization in flowering plants based on specific discrimination between self-and non-self pollen. Since this trait promotes outcrossing and avoids inbreeding it is a widespread mechanism of controlling sexual plant reproduction. Growers and breeders have effectively exploited SI as a tool for manipulating domesticated crops for thousands of years. However, only within the past thirty years have studies begun to elucidate the underlying molecular features of SI. The specific S-determinants and some modifier factors controlling SI have been identified in the sporophytic system exhibited by Brassica species and in the two very distinct gametophytic systems present in Papaveraceae on one side and in Solanaceae, Rosaceae, and Plantaginaceae on the other. Molecular level studies have enabled SI to SC transitions (and vice versa) to be intentionally manipulated using marker assisted breeding and targeted approaches based on transgene integration, silencing, and more recently CRISPR knock-out of SI-related factors. These scientific advances have, in turn, provided a solid basis to implement new crop production and plant breeding practices. Applications of self-(in)compatibility include widely differing objectives such as crop yield and quality improvement, marker-assisted breeding through SI genotyping, and development of hybrids for overcoming intra-and interspecific reproductive barriers. Here, we review scientific progress as well as patented applications of SI, and also highlight future prospects including further elucidation of SI systems, deepening our understanding of SI-environment relationships, and new perspectives on plant self/non-self recognition.

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Section: Ways Of Achieving Sc and Its Role In Hybrid Breedingmentioning

confidence: 99%

Self-(In)compatibility Systems: Target Traits for Crop-Production, Plant Breeding, and Biotechnology

et al. 2020

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“…Autogamy is a loss-of-function trait. Introgression of autogamy from L. temulentum into the genetic backgrounds of allogamous Lolium and Festuca species has opened the way to mapping genetic loci that control self-incompatibility (Do Canto, Studer, & Lubberstedt, 2016;Thorogood & Hayward, 1992). In an important recent advance, the S-locus of obligately outbreeding Lolium perenne has been associated with a gene (functional identity not yet established) which, in self-compatible L. temulentum, has a frameshift mutation disrupting 24 amino acids at the C-terminus (Manzanares et al, 2016).…”

Section: Phylog Eny and Archaeobotany Of Lolium Temulentummentioning

confidence: 99%

Grass blindness

Thomas

2019

Plants People Planet

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Societal Impact Statement Lolium temulentum (darnel) is an almost‐forgotten species that combines the characteristics of a weed, a pasture grass, a cereal, a medicinal herb, a hallucinogen, a religious symbol, and a literary trope. The way in which darnel has disappeared from common experience and memory, particularly in the developed world, has lessons to teach about how passive and active influences can conspire to render people blind to the cultural significance of historically important plants. Summary Grasses, even those that feed the world, are easily overlooked. Lolium temulentum (darnel) is a grass species with a long history of human association; but, particularly in those countries with highly mechanised agriculture, it has physically and culturally faded from common experience. Archaeobotanical studies of Neolithic and early agricultural sites consistently find L. temulentum grains alongside remains of cereals. L. temulentum seeds are sources of potent psychotoxins, the products of endophytic fungi, and continued to enter the diet until modern farming methods and food hygiene regulations rendered the species effectively extinct in technologically advanced countries. L. temulentum, alone or in combination with other bioactive sources, was widely used in traditional medicines, often in ritualistic or religious contexts. Its status as a poisonous mimic weed of cereals made darnel a resonant literary trope for malignant subversion with which people would have been completely familiar in the pre‐industrial era. The biblical parable about separating the wheat from the tares (tares was, possibly deliberately, an ambiguous alternative name for darnel) exerted profound religious and political force in the same period, and the Graeco‐Roman belief that stress was able to transform wheat or barley into darnel persisted and justified some fundamental customs and laws of Judaeo‐Christian culture. In the modern era, the not uncommon family or given name “Darnel,” or some variant thereof, faintly reflects the rich history of L. temulentum; though it is likely that most possessors of such names will have long been rendered blind to the plant connection.

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“…Interestingly, repeated selfing of DHs has been proposed as a method to cause the breakdown of SI, since rare mutations in SI genes in pollen grains can, thus, be selected [78]. Schemes to produce F 1 seed of perennial ryegrass based on population hybridization [50,126], cytoplasmic male sterility (CMS) [82,132], and SI [82,133,134] have been proposed (see also [135]), although opinions differ on which method is the most practically and economically feasible.…”

Section: Doubled Haploids For Hybrid Breedingmentioning

confidence: 99%

Haploid and Doubled Haploid Techniques in Perennial Ryegrass (Lolium perenne L.) to Advance Research and Breeding

2016

Self Cite

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Abstract:The importance of haploid and doubled haploid (DH) techniques for basic and applied research, as well as to improve the speed of genetic gain when applied in breeding programs, cannot be overstated. They have become routine tools in several major crop species, such as maize (Zea mays L.), wheat (Triticum aestivum L.), and barley (Hordeum vulgare L.). DH techniques in perennial ryegrass (Lolium perenne L.), an important forage species, have advanced to a sufficiently successful and promising stage to merit an exploration of what their further developments may bring. The exploitation of both in vitro and in vivo haploid and DH methods to (1) purge deleterious alleles from germplasm intended for breeding; (2) develop mapping populations for genetic and genomic studies; (3) simplify haplotype mapping; (4) fix transgenes and mutations for functional gene validation and molecular breeding; and (5) hybrid cultivar development are discussed. Even with the comparatively modest budgets of those active in forage crop improvement, haploid and DH techniques can be developed into powerful tools to achieve the acceleration of the speed of genetic gain needed to meet future agricultural demands.

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Overcoming self-incompatibility in grasses: a pathway to hybrid breeding

Cited by 31 publications

References 111 publications

Self-(In)compatibility Systems: Target Traits for Crop-Production, Plant Breeding, and Biotechnology

Self-(In)compatibility Systems: Target Traits for Crop-Production, Plant Breeding, and Biotechnology

Grass blindness

Haploid and Doubled Haploid Techniques in Perennial Ryegrass (Lolium perenne L.) to Advance Research and Breeding

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