Cover illustration: The symptoms of advanced blossom end-rot (BER) in ripe tomato fruit (left) and the xylem network, visualized using Lucifer Yellow CH, in developing tomato fruit (right). The initial symptoms of BER occur in the placental tissue at the distal end of the young fruit, where only two functioning xylem vessels supply Ca to the rapidly expanding cells. BER is the consequence of cell death caused by a localized Ca deficiency in individual cells. See Ho and White (pp. 571-581).
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