fusca3: A Heterochronic Mutation Affecting Late Embryo Development in Arabidopsis
- PMID: 12244252
- PMCID: PMC160461
- DOI: 10.1105/tpc.6.5.589
fusca3: A Heterochronic Mutation Affecting Late Embryo Development in Arabidopsis
Abstract
Molecular studies of late embryogenesis and seed development have emphasized differential gene expression as a means of identifying discrete stages of embryogenesis. Little has been done to identify factors that regulate the length of a given developmental stage or the degree of overlap between adjacent developmental programs. We designed a genetic screen to identify mutations that disrupt late embryo development in Arabidopsis without loss of hormonal responses. One such mutation, fusca3 (fus3), alters late embryo functions, such as the establishment of dormancy and desiccation tolerance, and reduces storage protein levels. fus3 cotyledons bear trichomes, and their ultrastructure is similar to that of leaf primordia. Immature fus3 embryos enter germinative development, and the shoot apical meristems develop leaf primordia before seed desiccation begins. The cotyledons resemble leaf primordia, yet retain some cotyledon characteristics; thus, cotyledon- and leaf-specific functions are expressed simultaneously. Together, these observations are consistent with a heterochronic interpretation of the fus3 mutation.
Similar articles
-
Cell-by-cell developmental transition from embryo to post-germination phase revealed by heterochronic gene expression and ER-body formation in Arabidopsis leafy cotyledon mutants.Plant Cell Physiol. 2014 Dec;55(12):2112-25. doi: 10.1093/pcp/pcu139. Epub 2014 Oct 4. Plant Cell Physiol. 2014. PMID: 25282558
-
The E3 ligase ABI3-INTERACTING PROTEIN2 negatively regulates FUSCA3 and plays a role in cotyledon development in Arabidopsis thaliana.J Exp Bot. 2017 Mar 1;68(7):1555-1567. doi: 10.1093/jxb/erx046. J Exp Bot. 2017. PMID: 28369580 Free PMC article.
-
LEAFY COTYLEDON1 Is an Essential Regulator of Late Embryogenesis and Cotyledon Identity in Arabidopsis.Plant Cell. 1994 Dec;6(12):1731-1745. doi: 10.1105/tpc.6.12.1731. Plant Cell. 1994. PMID: 12244233 Free PMC article.
-
AKIN10 and FUSCA3 interact to control lateral organ development and phase transitions in Arabidopsis.Plant J. 2012 Mar;69(5):809-21. doi: 10.1111/j.1365-313X.2011.04832.x. Epub 2011 Dec 15. Plant J. 2012. PMID: 22026387
-
Heterochronic Genes.In: Riddle DL, Blumenthal T, Meyer BJ, Priess JR, editors. C. elegans II. 2nd edition. Cold Spring Harbor (NY): Cold Spring Harbor Laboratory Press; 1997. Chapter 18. In: Riddle DL, Blumenthal T, Meyer BJ, Priess JR, editors. C. elegans II. 2nd edition. Cold Spring Harbor (NY): Cold Spring Harbor Laboratory Press; 1997. Chapter 18. PMID: 21413247 Free Books & Documents. Review. No abstract available.
Cited by
-
Evolution of asexual reproduction in leaves of the genus Kalanchoë.Proc Natl Acad Sci U S A. 2007 Sep 25;104(39):15578-83. doi: 10.1073/pnas.0704105104. Epub 2007 Sep 24. Proc Natl Acad Sci U S A. 2007. PMID: 17893341 Free PMC article.
-
A network of local and redundant gene regulation governs Arabidopsis seed maturation.Plant Cell. 2006 Jul;18(7):1642-51. doi: 10.1105/tpc.105.039925. Epub 2006 May 26. Plant Cell. 2006. PMID: 16731585 Free PMC article.
-
Genes directly regulated by LEAFY COTYLEDON2 provide insight into the control of embryo maturation and somatic embryogenesis.Proc Natl Acad Sci U S A. 2006 Feb 28;103(9):3468-73. doi: 10.1073/pnas.0511331103. Epub 2006 Feb 21. Proc Natl Acad Sci U S A. 2006. PMID: 16492731 Free PMC article.
-
Repression of the LEAFY COTYLEDON 1/B3 regulatory network in plant embryo development by VP1/ABSCISIC ACID INSENSITIVE 3-LIKE B3 genes.Plant Physiol. 2007 Feb;143(2):902-11. doi: 10.1104/pp.106.092320. Epub 2006 Dec 8. Plant Physiol. 2007. PMID: 17158584 Free PMC article.
-
Interactions between ethylene, abscisic acid and cytokinin during germination and seedling establishment in Arabidopsis.J Biosci. 2010 Sep;35(3):451-8. doi: 10.1007/s12038-010-0050-2. J Biosci. 2010. PMID: 20826954
References
LinkOut - more resources
Full Text Sources
Other Literature Sources
Molecular Biology Databases