In flowering plants, seed development is preceded by a double fertilization event, whereby
two male sperm cells fuse with two female gametes: the egg and central cells. The fertilized
egg cell will form the embryo, and the fertilized central cell will give rise to the triploid
endosperm, whose function is to nourish and support the embryo. Even though the
endosperm has an unparalleled role for human nutrition, the molecular bases for its
development are yet to be understood. Our results reveal that increasing auxin levels after …