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BIOCHEMICAL STUDIES OF DEREIS AND MUNDULEA : THE HISTOLOGY OF ROTENONE IN DEREIS ELLIPTIC A
Author(s) -
WORSLEY R. E. LE G.,
NUTMAN F. J.
Publication year - 1937
Publication title -
annals of applied biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.677
H-Index - 80
eISSN - 1744-7348
pISSN - 0003-4746
DOI - 10.1111/j.1744-7348.1937.tb05050.x
Subject(s) - rotenone , parenchyma , biology , xylem , cortex (anatomy) , botany , histology , starch , anatomy , microbiology and biotechnology , biochemistry , mitochondrion , neuroscience , genetics
SUMMARY1 Resin‐containing cells can be distinguished microscopically in sections of Denis roots. Only these cells respond to Durham's test. 2 Rotenone first occurs in small groups of cells in the secondary cortex opposite the protoxylem, when the plant is about 6 weeks old. Thereafter it gradually spreads in scattered groups throughout the xylem parenchyma and cortex. 3 Starch and rotenone do not occur in the same cell; they occur in mutually exclusive groups. 4 It is probable that, in a mature root, all the xylem parenchyma contains either starch or rotenone. 5 The toxic substances other than rotenone probably occur in the same cells as rotenone. 6 The rotenone‐containing cells are apparently morphologically unspecialized.