Sexual and apomictic plant reproduction in the genomics era: exploring the mechanisms potentially useful in crop plants

Dwivedi, S L and Perotti, E and Upadhyaya, H D and Ortiz, R (2010) Sexual and apomictic plant reproduction in the genomics era: exploring the mechanisms potentially useful in crop plants. Sexual Plant Reproduction, 23 (4). pp. 265-279. ISSN 1432-2145

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Abstract

Arabidopsis, Mimulus and tomato have emerged as model plants in researching genetic and molecular basis of differences in mating systems. Variations in floral traits and loss of self-incompatibility have been associated with mating system differences in crops. Genomics research has advanced considerably, both in model and crop plants, which may provide opportunities to modify breeding systems as evidenced in Arabidopsis and tomato. Mating system, however, not recombination per se, has greater effect on the level of polymorphism. Generating targeted recombination remains one of the most important factors for crop genetic enhancement. Asexual reproduction through seeds or apomixis, by producing maternal clones, presents a tremendous potential for agriculture. Although believed to be under simple genetic control, recent research has revealed that apomixis results as a consequence of the deregulation of the timing of sexual events rather than being the product of specific apomixis genes. Further, forward genetic studies in Arabidopsis have permitted the isolation of novel genes reported to control meiosis I and II entry. Mutations in these genes trigger the production of unreduced or apomeiotic megagametes and are an important step toward understanding and engineering apomixis

Item Type:	Article
Divisions:	UNSPECIFIED
CRP:	UNSPECIFIED
Uncontrolled Keywords:	Apomixis - Breeding systems - Self-incompatibility - Floral traits - Model plants - Gene cloning - Quantitative trait loci - Polymorphism - Recombination
Subjects:	Others > Genetics and Genomics Others > Plant Pathology
Depositing User:	Mr Sanat Kumar Behera
Date Deposited:	18 Nov 2011 12:47
Last Modified:	18 Nov 2011 12:48
URI:	http://oar.icrisat.org/id/eprint/4101
Official URL:	http://dx.doi.org/10.1007/s00497-010-0144-x
Projects:	UNSPECIFIED
Funders:	UNSPECIFIED
Acknowledgement:	Sangam Dwivedi highly appreciates the support and encouragement of William D Dar (Director General, ICRISAT) and the ICRISAT library staff for assistance in literature searches and sourcing reprints. We highly appreciate the useful suggestions made by Prof. JS Heslop-Harrison and other anonymous reviewers.
Links:	Author

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