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EDEMA
(ih-DEE-muh)
1.
Botany: a
swelling in a plant, caused by excessive moisture.
2.
Pathology:
a buildup of excess serous fluid in the interstices of cells in
tissue spaces or into body cavities.
Common
clues: Plant swelling; Swelling condition; Plant problem;
Accumulation of fluids; Tomato blight; Botanical swelling; Watery
swelling; Puffiness; Swell subject for plants
Crossword
puzzle frequency:
2 times a year
Frequency
in English language:
84310 / 86800
Video:
Identifying
Late Blight on Tomato Plants
Edema
on the underside of a Peperomia
Leaf [Photo: Courtesy of Dr.
Curtis E. Swift, Colorado State University]
Edema
is a condition that results when the plant takes up more water
through the roots than the leaves can give off in the form of
water vapor through the stomates. The excess water accumulates in
the leaf cells, causing them to enlarge and often burst. As the
cells become engorged with water, swellings may appear on the
upper or lower surface of the leaf. The afflicted cells often
have a dark green bacterial-like water-soaked appearance
surrounding these swollen cells.
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