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An Evaluation of Specific and Non‐Specific Inhibition of 2‐Dimensional Growth in Fern Gametophytes
Author(s) -
Miller John H.
Publication year - 1968
Publication title -
physiologia plantarum
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.351
H-Index - 146
eISSN - 1399-3054
pISSN - 0031-9317
DOI - 10.1111/j.1399-3054.1968.tb07294.x
Subject(s) - fern , gametophyte , growth inhibition , population , biology , botany , cell growth , biochemistry , medicine , pollen , environmental health
Gametophytes of Onoclea sensibilis were grown under continuous white light of 90 lux. Filaments were produced having 4–6 cells before the initiation of 2‐dimensional growth. There was a close correlation between the average cell number of a population of plants and the proportion of 2‐dimensional forms. 8‐Azaguanine produced a general inhibition of growth, and it was shown that the reduced proportion of 2‐dimensional plants caused by 8‐azaguanine was a secondary consequence of the general growth inhibition. IAA however gave a true specific inhibition of 2‐dimensional growth. Based on these experiments the proper criteria for establishing a specific inhibition of 2‐dimcnsional growth arc discussed. These criteria are applied in a critical review of previous papers on the inhibition of 2‐dimensional growth. It is concluded that no firm evidence is available that inhibition of protein synthesis specifically blocks 2‐dimensional growth.