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A MICROSCOPICAL STUDY OF THE STATOCYTE SYSTEM IN STEMS OF ETIOLATED PHASEOLUS SEEDLINGS
Author(s) -
Verbelen JeanPierre,
Spruyt Eric,
De Greef Jan A.
Publication year - 1985
Publication title -
american journal of botany
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.218
H-Index - 151
eISSN - 1537-2197
pISSN - 0002-9122
DOI - 10.1002/j.1537-2197.1985.tb08350.x
Subject(s) - amyloplast , etiolation , biology , phaseolus , botany , hook , microbiology and biotechnology , plastid , biochemistry , chloroplast , gene , enzyme , structural engineering , engineering
In etiolated bean seedlings there is a starch sheath around the vascular stem tissue. This cell layer shows a gradient of amyloplast number and cell dimensions. We demonstrated a maximum relative amyloplast pressure in the stem hook. Cytological as well as physiological arguments indicate that the stem hook may play an important role in graviperception through this starch sheath.