File:Fpls-02-00017-g008.png

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English: A schematic model for the regulation of dormancy and germination by ABA and GA in response to the environment in rice seeds. Under the same environmental conditions, different rice cultivars exhibit different dormancy states due to their differential expression of ABA and GA metabolic genes. Environmental conditions such as higher temperature enhance expression of specific ABA biosynthesis genes (OsNCED family) and GA catabolic genes (OsGA2ox family), which result in dormancy by inducing dominance of ABA. Moreover, whether a seed remains dormancy or germinates may depend on a balanced ABA and GA metabolism influenced by genetic and epigenetic mechanisms, a collective outcome determined by sequence and expression variations of ABA and GA metabolic genes and the function of ABA/GA receptors.
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Source doi:10.3389/fpls.2011.00017
Author Fei Liu, Hangxiao Zhang, Gang Wu, Jing Sun, Lili Hao, Xiaomeng Ge, Jun Yu, Weiwei Wang

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current08:35, 6 June 2017Thumbnail for version as of 08:35, 6 June 20171,343 × 1,104 (441 KB)TIB-NOA (talk | contribs)pattypan 17.05

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