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Endosperm development

An actin starry night regulates seed size

In Arabidopsis, the final size of the seed is determined early on during its development by the growth of a single multinucleate cell, the coenocytic endosperm. The endosperm arises from a second fertilization event, alongside the embryo, and dominates the onset of seed development while later nourishing and supporting embryo growth.

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Fig. 1: Effect of fragmentation and overexpression of F-actin on seed size.


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Correspondence to Enrico Magnani.

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Xu, W., Magnani, E. An actin starry night regulates seed size. Nat. Plants 9, 201–202 (2023).

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