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To germinate or not to germinate: a question of dormancy relief not germination stimulation

Published online by Cambridge University Press:  10 September 2012

William E. Finch-Savage*
Affiliation:
School of Life Sciences, Warwick University, Wellesbourne Campus, Wellesbourne, WarwickCV35 9EF, UK
Steven Footitt
Affiliation:
School of Life Sciences, Warwick University, Wellesbourne Campus, Wellesbourne, WarwickCV35 9EF, UK
*
*Correspondence Email: Bill.Finch-Savage@warwick.ac.uk

Abstract

A common understanding of the control of germination through dormancy is essential for effective communication between seed scientists whether they are ecologists, physiologists or molecular biologists. Vleeshouwers et al. (1995) realized that barriers between disciplines limited progress and through insightful conclusions in their paper ‘Redefining seed dormancy: an attempt to integrate physiology and ecology’, they did much to overcome these barriers at that time. However, times move on, understanding develops, and now there is a case for ‘Redefining seed dormancy as an integration of physiology, ecology and molecular biology’. Finch-Savage and Leubner-Metzger (2006) had this in mind when they extended and re-interpreted the definition of dormancy proposed by Vleeshouwers et al. (1995), by considering dormancy as a having a number of layers that must be removed, with the final layer of dormancy being synonymous with the stimulation/induction of germination.

Type
Research Opinion
Copyright
Copyright © Cambridge University Press 2012

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References

Alboresi, A., Gestin, C., Leydecker, M.-T., Bedu, M., Meyer, C. and Truong, H.-N. (2005) Nitrate, a signal relieving seed dormancy in Arabidopsis. Plant, Cell and Environment 28, 500512.CrossRefGoogle ScholarPubMed
Batak, I., Devic, M., Giba, Z., Grubisi, D., Poff, K.L. and Konjevic, R. (2002) The effects of potassium nitrate and NO-donors on phytochrome A- and phytochrome B-specific induced germination of Arabidopsis thaliana seeds. Seed Science Research 12, 253259.CrossRefGoogle Scholar
Batlla, D., Kruk, B.C. and Benech-Arnold, R.L. (2004) Modelling changes in dormancy in weed soil seed banks: implications for the prediction of weed emergence. pp. 245270in (Eds) Handbook of seed physiology: Applications to agriculture. New York, Food Product Press and The Haworth Reference Press.Google Scholar
Benech-Arnold, R.L., Sanchez, R.A., Forcella, F., Kruk, B.C. and Ghersa, C.M. (2000) Environmental control of dormancy in weed seed banks in soil. Field Crops Research 67, 105122.Google Scholar
Bewley, J.D. and Black, M. (1994) Seeds – physiology of development and germination (2nd edition). New York, Plenum Press.CrossRefGoogle Scholar
Cadman, C.S.C., Toorop, P.E., Hilhorst, H.W.M. and Finch-Savage, W.E. (2006) Gene expression profiles of Arabidopsis Cvi seeds during cycling indicate a common underlying dormancy control mechanism. The Plant Journal 46, 805822.CrossRefGoogle ScholarPubMed
Casal, J.J. and Sanchez, R.A. (1998) Phytochromes and seed germination. Seed Science Research 8, 317329.CrossRefGoogle Scholar
Cutler, S.R., Rodriguez, P.L., Finkelstein, R.R. and Abrams, S.R. (2010) Abscisic acid: Emergence of a core signaling network. Annual Review of Plant Biology 61, 651679.CrossRefGoogle ScholarPubMed
Fenner, M. and Thompson, K. (2005) The ecology of seeds. Cambridge, UK, Cambridge University Press.CrossRefGoogle Scholar
Finch-Savage, W.E. and Leubner-Metzger, G. (2006) Seed dormancy and the control of germination. New Phytologist 171, 501523.CrossRefGoogle ScholarPubMed
Finch-Savage, W.E., Cadman, C.S.C., Toorop, P.E., Lynn, J.R. and Hilhorst, H.W.M. (2007) Seed dormancy release in Arabidopsis Cvi by dry after-ripening, low temperature, nitrate and light shows common quantitative patterns of gene expression directed by environmentally specific sensing. The Plant Journal 51, 6078.CrossRefGoogle ScholarPubMed
Footitt, S., Douterelo-Soler, I., Clay, H. and Finch-Savage, W.E. (2011) Dormancy cycling in Arabidopsis seeds is controlled by seasonally distinct hormone signalling pathways. Proceedings of the National Academy of Sciences 108, 2023620241.CrossRefGoogle Scholar
Goggin, D.E., Steadman, K.J. and Powles, S.B. (2008) Green and blue light photoreceptors are involved in maintenance of dormancy in imbibed annual ryegrass (Lolium rigidum) seeds. New Phytologist 180, 8189.CrossRefGoogle ScholarPubMed
Goggin, D.E., Powles, S.B., Toorop, P.E. and Steadman, K.J. (2011) Dark-mediated dormancy release in stratified Lolium rigidum seeds is associated with higher activities of cell wall modifying enzymes and an apparent increase in gibberellin sensitivity. Journal of Plant Physiology 168, 527533.CrossRefGoogle Scholar
Hartweck, L.M. (2008) Gibberellin signaling. Planta 229, 113.CrossRefGoogle ScholarPubMed
Holdsworth, M.J., Bentsink, L. and Soppe, W.J.J. (2008) Molecular networks regulating Arabidopsis seed maturation, after-ripening, dormancy and germination. New Phytologist 179, 3354.CrossRefGoogle ScholarPubMed
Kucera, B., Cohn, M.A. and Leubner-Metzger, G. (2005) Plant hormone interactions during seed dormancy release and germination. Seed Science Research 15, 281307.CrossRefGoogle Scholar
Leubner-Metzger, G. (2001) Brassinosteroids and gibberellins promote tobacco seed germination by distinct pathways. Planta 213, 758763.CrossRefGoogle ScholarPubMed
Leubner-Metzger, G. (2003) Functions and regulation of β-1,3-glucanase during seed germination, dormancy release and after-ripening. Seed Science Research 13, 1734.CrossRefGoogle Scholar
Leubner-Metzger, G. and Meins, F. Jr (2001) Antisense-transformation reveals novel roles for class I β-1,3-glucanase in tobacco seed after-ripening and photodormancy. Journal of Experimental Botany 52, 17531759.CrossRefGoogle Scholar
Long, R.L., Stevens, J.C., Griffiths, E.M., Adamek, M., Powles, S.B. and Merritt, D.J. (2011) Detecting karrikinolide-responses in seeds of the Poaceae. Australian Journal of Botany 59, 609619.CrossRefGoogle Scholar
Matakiadis, T., Alboresi, A., Jikumaru, Y., Tatematsu, K., Pichon, O., Renou, J.-P., Kamiya, Y., Nambara, E. and Truong, H.-N. (2009) The arabidopsis abscisic acid catabolic gene CYP707A2 plays a key role in nitrate control of seed dormancy. Plant Physiology 149, 949960.CrossRefGoogle Scholar
Müller, K., Tintelnot, S. and Leubner-Metzger, G. (2006) Endosperm-limited Brassicaceae seed germination: Abscisic acid inhibits embryo-induced endosperm weakening of Lepidium sativum (cress) and endosperm rupture of cress and Arabidopsis thaliana. Plant Cell Physiology 47, 864877.CrossRefGoogle ScholarPubMed
Nambara, E., Okamoto, M., Tatematsu, K., Yano, R., Seo, M. and Kamiya, Y. (2010) Abscisic acid and the control of seed dormancy and germination. Seed Science Research 20, 5567.CrossRefGoogle Scholar
Ogawa, M., Hanada, A., Yamauchi, Y., Kuwahara, A., Kamiya, Y. and Yamaguchi, S. (2003) Gibberellin biosynthesis and response during Arabidopsis seed germination. Plant Cell 15, 15911604.CrossRefGoogle ScholarPubMed
Okamoto, M., Kuwahara, A., Seo, M., Kushiro, T., Asami, T., Hirai, N., Kamiya, Y., Koshiba, T. and Nambara, E. (2006) CYP707A1 and CYP707A2, which encode abscisic acid 8′-hydroxylases, are indispensable for proper control of seed dormancy and germination in Arabidopsis. Plant Physiology 141, 97107.CrossRefGoogle Scholar
Penfield, S., Li, Y., Gilday, A.D., Graham, S. and Graham, I.A. (2006) Arabidopsis ABA INSENSITIVE4 regulates lipid mobilization in the embryo and reveals repression of seed germination by the endosperm. Plant Cell 18, 18871899.CrossRefGoogle ScholarPubMed
Piskurewicz, U., Jikumaru, Y., Kinoshita, N., Nambara, E., Kamiya, Y. and Lopez-Molina, L. (2008) The gibberellic acid signaling repressor RGL2 inhibits Arabidopsis seed germination by stimulating abscisic acid synthesis and ABI5 activity. Plant Cell 20, 27292745.CrossRefGoogle ScholarPubMed
Pons, T.L. (2000) Seed responses to light. pp. 237260in (Ed.) Seeds – The ecology of regeneration in plant communities. Wallingford, UK, CAB International.CrossRefGoogle Scholar
Probert, R.J. and Benchley, J.L. (1999) The effect of environmental factors on field and laboratory germination in a population of Zostera marina L. from southern England. Seed Science Research 9, 331339.CrossRefGoogle Scholar
Sanchez, R.A. and Mella, R.A. (2004) The exit from dormancy and the induction of germination: physiological and molecular aspects. pp. 221243in (Eds) Handbook of seed physiology: Applications to agriculture. New York, Food Product Press and The Haworth Reference Press.Google Scholar
Sun, T.P. and Gubler, F. (2004) Molecular mechanism of gibberellin signaling in plants. Annual Review of Plant Biology 55, 197223.CrossRefGoogle ScholarPubMed
Thompson, K. (2000) The functional ecology of soil seed banks. pp. 215235in (Ed.) Seeds: The ecology of regeneration in plant communities. Wallingford, Oxon, UK, CAB International.CrossRefGoogle Scholar
Thompson, K. and Ooi, M.K.J. (2010) To germinate or not: more than just a question of dormancy. Seed Science Research 20, 209211.CrossRefGoogle Scholar
Vleeshouwers, L.M., Bouwmeester, H.J. and Karssen, C.M. (1995) Redefining seed dormancy: an attempt to integrate physiology and ecology. Journal of Ecology 83, 10311037.CrossRefGoogle Scholar