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Sporophytic and Gametophytic Self-Incompatibility
1992In this article the main features of the best-studied self- incompatibility (SI) systems will be summarized (see also Nasrallah and Nasrallah 1989, and Harings et al. 1991), followed by a more detailed description of potato pistil proteins and their possible role in SI.
H. Kaufmann +7 more
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Gametophytic Self-Incompatibility in Petunia
2009Gametophytic self-incompatibility (GSI), which prevents growth of a pollen tube through the style, provides a means of preventing self-pollination. Seen in most eudicot plant families, GSI in the genus Petunia was described by Darwin in the 19th century. By the time the first edition of this monograph was published in 1984, nearly a century later, most
Thomas L. Sims, Timothy P. Robbins
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Gametophytic self-incompatibility: contrasting mechanisms for Nicotiana and Papaver
Trends in Cell Biology, 1993Since Darwin first noted that not all plants produce self-seed, several mechanisms that regulate the acceptance or rejection of pollen during fertilization have been recognized, of which self-incompatibility (SI) is the most widespread. Over the past few years much progress has been made in understanding the molecular and cellular processes involved in
N, Franklin-Tong, C, Franklin
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Molecular Analysis of Gametophytic Self-Incompatibility
1992The control of gametophytic self-incompatibility as exhibited in most plant species is exerted through the action of a single locus S. When haploid pollen grains genotype Sx alight on a style expressing the same S allele, fertilization is prevented, whereas pollen grains whose S-alleles are not matched by those expressed in the style grow, and ...
Hans-Hubert Kirch +4 more
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Gametophytic self-incompatibility in Nicotiana alata
1994Self-incompatibility (SI), ‘the inability of a fertile hermaphrodite seed plant to produce zygotes after self-pollination’ (de Nettancourt 1977), is one of the mechanisms that has evolved to encourage outbreeding in flowering plants. The effectiveness of self-incompatibility in promoting outbreeding is believed to be one of the most important factors ...
Ed Newbigin +2 more
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Anther Culture of the Gametophytic Self-Incompatible Species Physalis ixocarpa Brot
2021Here we present an optimized protocol for in vitro embryo formation and plant regeneration through anther culture of the Mexican husk tomato (Physalis ixocarpa Brot.). This protocol relies on the application of an anther thermal shock at a specific developmental stage prior to the in vitro culture, ensures embryo formation from anthers without callus ...
Rocío, Escobar-Guzmán +1 more
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Gametophytic self-incompatibility inhibits pollen tube growth using different mechanisms
Trends in Plant Science, 2003Self-incompatibility (SI) is one of the most important mechanisms used by plants to prevent self-pollination and consequently inbreeding. It is genetically controlled by the S-locus, which allows the recognition and rejection of 'self' (S-phenotypically identical) pollen. Gametophytically controlled SI (GSI) is the most widespread SI system.
Noni V E, Franklin-Tong +1 more
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Gametophytic Self-Incompatibility: Biochemical, Molecular Genetic, and Evolutionary Aspects
1992Publisher Summary This chapter focuses on the gametophytic self-incompatibility—a prezygotic barrier to self-fertilization in plants that otherwise produce fully functional gametes. Two types of reproductive barriers operate in plants: interspecific and intraspecific.
A, Singh, T H, Kao
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Population Genetic Aspects of Gametophytic Self incompatibility
Plant Species Biology, 1996Abstract In gametophytic self‐incompatibility, the S‐locus encodes an S‐protein whose expression results in successful pollination only when the pollen allele differs from both maternal alleles. Analysis of nucleotide and amino acid sequences of a number of S‐alleles has revealed extraordinary allelic sequence ...
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Molecular Mechanisms Underlying The Breakdown Of Gametophytic Self‐incompatibility
The Quarterly Review of Biology, 2002The breakdown of self-incompatibility has occurred repeatedly throughout the evolution of flowering plants and has profound impacts on the genetic structure of populations. Recent advances in understanding of the molecular basis of self-incompatibility have provided insights into the mechanisms of its loss in natural populations, especially in the ...
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