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DIFFERENTIATION AND PATTERN IN MONSTERA DELICIOSA. THE IDIOBLASTIC DEVELOPMENT OF THE TRICHOSCLEREIDS IN THE AIR ROOT

American journal of botany, v.33 no.6, 1946년, pp.544 - 551  

Bloch, Robert (Department of Botany Yale University New Haven Connecticut)

Abstract

In the air root of Monstera deliciosa trichosclereids are formed early in the cortical rib meristem, which proliferate between parenchyma cells like hairs, sending out long processes which are prosen-chymatous like those of astrosclereids or fibers. The cells are thus clearly distinguished from the brachysclereids of the same root which differentiate at a much later stage from non-specialized cortical ground parenchyma cells of the hypodermal region or adjacent to internal surfaces. The trichosclereids originate from late, differential, polar divisions of cortex cells near the root apex, analogous to those which give rise to passage cells in the hypodermis. These special divisions occur at the basal (proximal) ends of cell files in the rib meristem, and the trichosclereid initials can be recognized by their position, small size, dense content and large nucleus. Their subsequent specific activity, which distinguishes them from their differently reactive neighbors, consists in the formation of prosenchymatous processes which grow rapidly into the intercellular space system as it develops between the cortical parenchyma cells. This behavior appears to be correlated with their late appearance as "embryonic" cells and with the presence of air spaces. Their subsequently long-continued growth is comparable to that of the external trichoblasts of the grass root epidermis and other plants. The distribution of trichosclereids in the air root of Monstera can thus be traced back to a pattern of differential cell divisions in the fundamental tissue which precedes it, and later idioblastic development appears as the outcome of specific differentiation rather than uncontrolled growth of solitary cells. The growth of the processes of the trichosclereids resembles that of other intrusively growing fibers and sclereids and bears a close relationship to changes in the intercellular space system; later differentiation of the wall of the sclereids is comparable to that of ordinary fibers or sclerenchyma cells, although somewhat more irregular. Pit canals occur only in the initial, central portion of the sclereid, and secondary thickening and suberization are not always initiated uniformly over the entire length of the long tubular branches of a sclereid, but are apparently often subject to variable local conditions.

참고문헌 (18)

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  2. Proc. Leeds Phil. Soc. Sci. Sect. Bloch R. 92 3 1935 Observations on the relation of adventitious root formation to the structure of air‐roots of orchids 

  3. Bloch, Robert. DEVELOPMENTAL POTENCY, DIFFERENTIATION AND PATTERN IN MERISTEMS OF MONSTERA DELICIOSA. American journal of botany, vol.31, no.2, 71-77.

  4. Foster, Adriance S.. Structure and Development of Sclereids in the Petiole of Camellia japonica L.. Bulletin of the Torrey Botanical Club, vol.71, no.3, 302-.

  5. Amer. Jour. Bot. Foster A. S. 456 32 1945 10.1002/j.1537-2197.1945.tb05145.x Origin and development of sclereids in the foliage leaf of Trochodendron aralioides Sieb. & Zucc 

  6. Gürtler F.1905.Ueber interzellulare Haarbildungen insbesondere über die sogenannten inneren Haare derNymphaeaceenundMenyanthoideen. Inaug‐Diss.Berlin.92pages. 

  7. Bot. Jahrb. Lierau M. 1 9 1888 Ueber die Wurzeln der Araceen 

  8. Neues System der Pflanzenphysiologie Meyen F. J. F. 311 1837 

  9. Sachs J.1882.Textbook of Botany.2nd ed.Oxford. pp.84-85. 

  10. Sinnott, Edmund W., Bloch, Robert. CHANGES IN INTERCELLULAR RELATIONSHIPS DURING THE GROWTH AND DIFFERENTIATION OF LIVING PLANT TISSUES. American journal of botany, vol.26, no.8, 625-634.

  11. Bot. Gaz. Sinnott E. W. 90 105 1943 10.1086/335194 Development of the fibrous net in the fruit of various races of Luffa cylindrica 

  12. Sinnott, Edmund W., Bloch, Robert. THE CYTOPLASMIC BASIS OF INTERCELLULAR PATTERNS IN VASCULAR DIFFERENTIATION. American journal of botany, vol.32, no.3, 151-156.

  13. Systematic anatomy of the dicotyledons Solereder H. 1183 1 1908 

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  16. Ann. Sci. Nat. 5 sér. Bot. Tieghem Ph. 72 6 1866 Sur la structure des Aroidées 

  17. Jahrb. Wiss. Bot. Tschirch A. 303 16 1885 Beiträge zur Kenntnis des mechanischen Gewebesystems der Pflanzen 

  18. Oesterr. Bot. Zeitschr. Wiesner J. 4 25 1875 Ueber das Vorkommen von Haaren in den Interzellulargängen des Mesophylls von Philodendron pertusum 

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