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| DOI: | 10.1093/aob/mcr186 |
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| Web URL(s): | https://academic.oup.com/aob/article/108/4/677/241297/Progress-towards-elucidating-the-mechanisms-of
Last checked: 03/02/2017
Access conditions: Item is within a limited-access website |
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| Publication Type:
| Refereed |
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| Author(s): | Klaas, Manfred;
Yang, Bicheng;
Bosch, Maurice;
Thorogood, Daniel;
Manzanares, Chloe;
Armstead, Ian P.;
Franklin, F. C. H.;
Barth, Susan |
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| Author Affiliation: | Klaas: Plant Cell Laboratory, National University of Ireland Maynooth, Maynooth, Ireland; Yang, Manzanares and Barth: Environment and Land Use Programme, Oak Park Research Centre, Teagasc Crops, Carlow, Ireland; Yang, Bosch, Thorogood, Manzanares, and Armstead: Institute of Biological, Environmental and Rural Sciences, Aberystwyth University, Plas Gogerddan, Aberystwyth, Ceredigion, UK; Yang, Manzanares and Franklin: School of Biosciences, University of Birmingham, Edgbaston, Birmingham, UK |
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| Title: | Progress towards elucidating the mechanisms of self-incompatibility in the grasses: Further insights from studies in Lolium |
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| Section: | Pollen-pistil interactions and self-incompatibility
Other records with the "Pollen-pistil interactions and self-incompatibility" Section
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| Source: | Annals of Botany. Vol. 108, No. 4, September 2011, p. 677-685. |
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| Publishing Information: | London, Oxford University Press |
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| # of Pages: | 9 |
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| Keywords: | TIC Keywords: Calcium; Gene mapping; Lolium perenne; Physiological processes; Poaceae; Quantitative trait loci; Self-incompatibility
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| Abstract/Contents: | "Background and Scope Self-incompatibility (SI) in flowering plants ensures the maintenance of genetic diversity by ensuring outbreeding. Different genetic and mechanistic systems of SI among flowering plants suggest either multiple origins of SI or considerable evolutionary diversification. In the grasses, SI is based on two loci, S and Z, which are both polyallelic: an incompatible reaction occurs only if both S and Z alleles are matched in individual pollen with alleles of the pistil on which they alight. Such incompatibility is referred to as gametophytic SI (GSI). The mechanics of grass GSI is poorly understood relative to the well-characterized S-RNase-based single-locus GSI systems (Solanaceae, Rosaceae, Plantaginaceae), or the Papaver recognition system that triggers a calcium-dependent signalling network culminating in programmed cell death. There is every reason to suggest that the grass SI system represents yet another mechanism of SI. S and Z loci have been mapped using isozymes to linkage groups C1 and C2 of the Triticeae consensus maps in Secale, Phalaris and Lolium. Recently, in Lolium perenne, in order to finely map and identify S and Z, more closely spaced markers have been developed based on cDNA and repeat DNA sequences, in part from genomic regions syntenic between the grasses. Several genes tightly linked to the S and Z loci were identified, but so far no convincing candidate has emerged. Research and Progress From subtracted Lolium immature stigma cDNA libraries derived from S and Z genotyped individuals enriched for SI potential component genes, kinase enzyme domains, a calmodulin-dependent kinase and a peptide with several calcium (Ca2+) binding domains were identified. Preliminary findings suggest that Ca2+ signalling and phosphorylation may be involved in Lolium GSI. This is supported by the inhibition of Lolium SI by Ca2+ channel blockers lanthanum (La3+) and verapamil, and by findings of increased phosphorylation activity during an SI response." |
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| Language: | English |
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| References: | 59 |
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| Note: | Figures
Tables |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Klaas, M., B. Yang, M. Bosch, D. Thorogood, C. Manzanares, I. P. Armstead, et al. 2011. Progress towards elucidating the mechanisms of self-incompatibility in the grasses: Further insights from studies in Lolium. Ann. Bot. 108(4):p. 677-685. |
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| DOI: 10.1093/aob/mcr186 |
| Web URL(s):
https://academic.oup.com/aob/article/108/4/677/241297/Progress-towards-elucidating-the-mechanisms-of
Last checked: 03/02/2017
Access conditions: Item is within a limited-access website |
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MSU catalog number: b2209341a |
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