Cell wall invertase as a regulator in determining sequential development of endosperm and embryo through glucose signaling early in seed development |
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Authors: | Lu Wang Shengjin Liao Yong-Ling Ruan |
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Affiliation: | 1.School of Environmental and Life Sciences; The University of Newcastle; Callaghan, NSW Australia;2.Australia-China Research Centre for Crop Improvement; The University of Newcastle; Callaghan, NSW Australia |
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Abstract: | Seed development depends on coordination among embryo, endosperm and seed coat. Endosperm undergoes nuclear division soon after fertilization, whereas embryo remains quiescent for a while. Such a developmental sequence is of great importance for proper seed development. However, the underlying mechanism remains unclear. Recent results on the cellular domain- and stage-specific expression of invertase genes in cotton and Arabidopsis revealed that cell wall invertase may positively and specifically regulate nuclear division of endosperm after fertilization, thereby playing a role in determining the sequential development of endosperm and embryo, probably through glucose signaling. |
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Keywords: | cell division embryo endosperm invertase seed development sugar metabolism sugar signaling |
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