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A Breakdown of Brassica Self-Incompatibility in ARC1 Antisense Transgenic Plants

Self-incompatibility, the rejection of serf pollen, is the most widespread mechanism by which flowering plants prevent inbreeding. In Brassica, the S receptor kinase (SRK) has been implicated in the self-incompatibility response, but the molecular mechanisms involving SRK are unknown. One putative d...

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Published in:Science (American Association for the Advancement of Science) 1999-11, Vol.286 (5445), p.1729-1731
Main Authors: Stone, Sophia L., Arnoldo, MaryAnne, Goring, Daphne R.
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Arnoldo, MaryAnne
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description Self-incompatibility, the rejection of serf pollen, is the most widespread mechanism by which flowering plants prevent inbreeding. In Brassica, the S receptor kinase (SRK) has been implicated in the self-incompatibility response, but the molecular mechanisms involving SRK are unknown. One putative downstream effector for SRK is ARC1, a protein that binds to the SRK kinase domain. Here it is shown that suppression of ARC1 messenger RNA levels in the self-incompatible Brassica napus W1 line is correlated with a partial breakdown of selfincompatibility, resulting in seed production. This provides strong evidence that ARC1 is a positive effector of the Brassica self-incompatibility response.
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In Brassica, the S receptor kinase (SRK) has been implicated in the self-incompatibility response, but the molecular mechanisms involving SRK are unknown. One putative downstream effector for SRK is ARC1, a protein that binds to the SRK kinase domain. Here it is shown that suppression of ARC1 messenger RNA levels in the self-incompatible Brassica napus W1 line is correlated with a partial breakdown of selfincompatibility, resulting in seed production. This provides strong evidence that ARC1 is a positive effector of the Brassica self-incompatibility response.</abstract><cop>Washington, DC</cop><pub>American Society for the Advancement of Science</pub><pmid>10576738</pmid><doi>10.1126/science.286.5445.1729</doi><tpages>3</tpages></addata></record>
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source American Association for the Advancement of Science; Social Science Premium Collection; Access via JSTOR; Alma/SFX Local Collection; Education Collection
subjects Agronomy. Soil science and plant productions
Biological and medical sciences
Biology
Brassica
Brassica - genetics
Brassica - physiology
Carrier Proteins - genetics
Carrier Proteins - physiology
DNA, Antisense
Evidence
Flowers & plants
Fundamental and applied biological sciences. Psychology
Genetically modified plants
Genetics and breeding of economic plants
Germination
Glycoproteins - genetics
Glycoproteins - metabolism
Heterosis. Floral biology applications: apomixy, male sterility, incompatibility, varia
Messenger RNA
Microscopy, Fluorescence
Papillae
Phenotype
Plant breeding: fundamental aspects and methodology
Plant physiology and development
Plant Proteins - genetics
Plant Proteins - metabolism
Plant Proteins - physiology
Plant reproduction
Plant Structures - genetics
Plant Structures - physiology
Plants
Plants, Genetically Modified
Pollen
Pollen - genetics
Pollen - physiology
Pollen tubes
Pollination
Protein Kinases - genetics
Protein Kinases - metabolism
Receptors
Reproduction
RNA, Messenger - genetics
RNA, Messenger - metabolism
RNA, Plant - genetics
RNA, Plant - metabolism
Seed production
Seed set
Seeds - physiology
Sexual reproduction
Transgenes
Transgenic plants
Ubiquitin-Protein Ligases
Vegetative and sexual reproduction, floral biology, fructification
title A Breakdown of Brassica Self-Incompatibility in ARC1 Antisense Transgenic Plants
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