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. 2010 May 11;61(11):2979–2990. doi: 10.1093/jxb/erq125

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© 2010 The Author(s).

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/2.5), which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

This paper is available online free of all access charges (see http://jxb.oxfordjournals.org/open_access.html for further details)

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Fig. 9. — Model showing how H₂O₂, NO, ABA, and GA regulate seed dormancy and germination. Seed imbibition leads to increases in H₂O₂ and NO. H₂O₂ up-regulates ABA catabolism through NO, and also GA biosynthesis. A high concentration of ABA also inhibits GA biosynthesis, but a balance of these two hormones jointly controls the dormancy and germination of Arabidopsis seeds.