Growth of Pollen Tube Towards the Ovule (IMAGE)

Institute of Transformative Bio-Molecules (ITbM), Nagoya University

Growth of Pollen Tube Towards the Ovule

Caption

a) Growth of pollen tube towards the ovule. Sperm cells exist at the tip of the tube. Pollen tube contents (PTC) are the liquid part of the pollen tube, shown in yellow. b) Upon pollination to the pistil, the pollen tube grows from pollen towards the ovule. Once the pollen tube reaches the ovule, the tube bursts releasing PTCs and two sperm cells that can fertilize the egg cell and the central cell. Yellow lines on the ovule after fertilization (seed) in figure 1. a) show the pathway taken by the pollen tube. c) A seed after fertilization. After fertilization, the egg cell and central cell develop into the embryo and the endosperm, respectively. Simultaneously, the ovule develops a seed coat.

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ITbM, Nagoya University

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