Variability in the expression of self-incompatibility in tuber-bearing diploid solanum species

Cipar, M. S.; Peloquin, S. J.; Hougas, R. W.

doi:10.1007/bf02855317

Cited by 56 publications

(29 citation statements)

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“…As in N. glauca, S.I. plants are also found infrequently in S.C. S. verrucosum (Magoon et al, 1958;Cipar et al, 1964).…”

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confidence: 99%

Phases in the S-gene expression, and S-allele interaction in the control of interspecific incompatibility

Pandey

1973

Heredity

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SUMMARYPlants of 19 progeny families, grown from seeds obtained from crosses between five different S genotypes of Nicotiana bonariensis, were studied for their interspecific incompatibility behaviour as female parents with pollen of certain S.I. and S.C. species.The relationship between S genotypic constitution and interspecific incompatibility behaviour, first shown by the plants of the parental families studied earlier, was confirmed without exception in all the progenies. All plants of the same S genotypic constitution always behaved alike. No dissociation of specific intra-and interspecific incompatibility reactions has been found in a total of 1200 plants so far tested in N. alata and N. bonariensis. Study of the 10 genotypes possible from four different S alleles, six heterozygous and four homozygous, taken in conjunction with the earlier studies in this species, showed that interspecific incompatibility, including unilateral incompatibility, was the function of S alleles. Each S allele had its own specific property of accepting or rejecting a class of pollen.There is a truly sporophytic determination of interspecific incompatibility in the style. In styles heterozygous for S alleles there was either independent action, or allelic interaction between the accepting and the rejecting allele showing dominance of one or the other.The allelic interactions in the style are specific for pollen of particular species, and have no relationship with allelic behaviour in connection with pollen of other species.Generally, all pollen of a species behaved alike, polymorphism occurring only in the style behaviour. The tester S.I. plant GM8 of otherwise S.C. species N. glauca is an exception. The pollen of this plant differed in interspecific incompatibility behaviour from a number of other S.I. plants of this species tested, which were, as expected, all alike in this respect.The Si. plant GM8 is S heterozygous with two distinct forms of S alleles, a usual self-incompatibility allele S, and a self-compatibility allele Sc which when present alone in the pollen causes that pollen to be rejected by a S.I. style. The unusual behaviour of the plant GM8 (SzSc) is due to S allele interaction in the pollen. All other S.I. plants, with usual behaviour of their pollen, are S homozygous with two different S alleles of the same S form.The results suggest a sporophytic action of the 5c gene in the pollen of GM8. There are two phases in the physiology of the S-gene action: (i) a primary S-gene action phase which occurs independently in the pollen and style and (ii) a secondary, incompatibility reaction phase which occurs after the pollen and style have come in contact with each other. Allelic interaction may occur in one or both phases.There are stepwise differences in the extent of rejection of the pollen of S.C.plants having different forms of S alleles, starting at the one end with full acceptance of the comparatively young self-compatible "Se" class of pollen by Si. styles to the other end with complete rejection of the comparative...

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“…As in N. glauca, S.I. plants are also found infrequently in S.C. S. verrucosum (Magoon et al, 1958;Cipar et al, 1964).…”

mentioning

confidence: 99%

Phases in the S-gene expression, and S-allele interaction in the control of interspecific incompatibility

Pandey

1973

Heredity

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“…The use of diploid breeding lines with self-compatibility mutations in crossings may contribute to avoiding this problem. Self-compatibility mutations have been identified in S. tuberosum dihaploids [31] and in some diploid potato species (S. gоniocalix, S. kurzianum, S. neohawkesii, S. phureja, S. pinnatisectum, S. raphanifolium, S. sanctae-rosae, S. stenotomum) [32]. The mutations tS1 in S. tuberosum dihaploids [31] and Sli in S. chacoense [33] are best known genetically.…”

Section: E V E L O P M E N T O F P O T a T O D I H A P L O I D Smentioning

confidence: 99%

DEVELOPMENT OF INITIAL MATERIAL FOR MARKER ASSISTED POTATO (Solanum tuberosum L.) PARENTAL LINE BREEDING AT THE DIPLOID LEVEL (review)

Yermishin¹,

Воронкова²

2017

S-h. biol.

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A b s t r a c tIt is important for improving the efficacy of potato breeding to have parental lines that are multiplex for many genes of agronomic characters, first of all genes of resistance to pests and diseases (that have two or more dominant alleles in the locus) (J.E. Bradshaw et al., 1994). Parental lines that are multiplex for several resistance genes occur not often (A.P. Yermishin et al., 2016) and, owing to biological peculiarities of potato crop, they can be produced only by means of breeding at the diploid level. In the presented review the genetic principles are described and an experience of their use by authors in research devoted to the development of the initial material applicable for effective marker assisted potato parental line breeding at the diploid level. The material includes the collection of initial dihaploids originated from potato varieties which were selected for viability, tuber performance, cultivar characters and DNA-markers of pest and diseases resistance genes; the diploid breeding material having wide range of late blight and virus resistance genes, introgressed from wild potato species by means of original methods of overcoming interspecific reproductive barriers; the diploid lines -donors of self-incompatibility gene and high male fertility genes that are effective as in heterozygous as well as in homozygous condition; the diploid lines -donors of genes of male fertile FDR (first division restitution) 2n-gamete formation. The best diploid lines having a complex of pest and diseases resistance genes, selected as the result of diploid breeding (on the basis of initial dihaploids, interspecific hybrids and donors of fertility) were used for production of multiplex tetraploid parental lines by means of mitotic chromosome doubling. Diploid parental lines suitable for hybridization with potato varieties (for meiotic polyploidization) were bred using lines-donors of genes of male fertile FDR 2n-gamete formation. The diploid initial material developed as the result of the research is of the interest for prospective alternative directions of potato breeding using selection at the diploid level: breeding diploid potato varieties as well as parental lines for production of hybrids and hybrid populations for true potato seed technology.

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“…They are outcrossing and, consequently, heterozygous parents generate segregating F1 progeny. Since potato shows vegetative propagation (tubers), addition of outcrossing results in naturally abundant phenotypic and genotypic variations in the potato gene pool under variable climatic conditions (Cipar et al, 1964). In this way, the potato resembles humans.…”

Section: Potato Genomics In Drought and Heat Stressesmentioning

confidence: 99%

Recent advances in potato genomics, transcriptomics, and transgenicsunder drought and heat stresses: a review

Aksoy

Demirel²,

Öztürk³

et al. 2015

Turk J Bot

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Sustainable potato production practices are crucial for food security and social sustainability in the future since potato is a highly nutritious food and it is considered as one of the most promising crops to reduce human hunger and poverty in the world due to its high yield potential. However, being a temperate crop, potato is exposed to various environmental stresses, including extended periods of drought and heat. The majority of potato genomics, transcriptomics, and transgenics studies concentrate on the characterization of molecular mechanisms governing cold hardiness of tubers and response and tolerance mechanisms against diseases. Likewise, potato breeding studies focus on increasing the yield, extending the postharvest storage, and developing cultivars that withstand biotic stresses. The number of genomics, transcriptomics, and transgenics studies of drought and heat tolerance in potato is limited, although they are necessary state-of-the-art research procedures to characterize and identify the regulatory mechanism underlying any stresses in order to develop new crop varieties that can tolerate harsh environmental conditions. For these reasons, this review focuses on recent advances in genomics, transcriptomics, and transgenics of drought and heat tolerance in potato.

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Variability in the expression of self-incompatibility in tuber-bearing diploid solanum species

Cited by 56 publications

References 13 publications

Phases in the S-gene expression, and S-allele interaction in the control of interspecific incompatibility

Phases in the S-gene expression, and S-allele interaction in the control of interspecific incompatibility

DEVELOPMENT OF INITIAL MATERIAL FOR MARKER ASSISTED POTATO (Solanum tuberosum L.) PARENTAL LINE BREEDING AT THE DIPLOID LEVEL (review)

Recent advances in potato genomics, transcriptomics, and transgenicsunder drought and heat stresses: a review

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