Adaptive significance of the sculptured exine of pollen

ABSTRACT IT has been widely accepted among botanists that pollen derives nutrients from the surrounding tapetal cells as a consequence of their lytic degeneration, but recent evidence has

suggested that in _Tradescantia_ at least, the tapetum does not degenerate as early as previously supposed1–3. In this plant the tapetal cells reorganize to form a plasmodium which engulfs

each pollen grain in a vacuole. At first there is no close association between the exine and the tonoplast of these vacuoles, but as the anther matures an intimate association develops. The

tapetal tonoplast expands and comes to line the interbacular cavities closely, greatly increasing the area of membrane which invests the microspore. Access through your institution Buy or

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GERMINATION (IN-VIVO) IN _CHAENOMELES SPECIOSA_ (SWEET) NAKAI Article Open access 26 March 2024 REFERENCES * Mepham, R. H., and Lane, G. R., _Nature_, 219, 961 (1968). Article  ADS  Google

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references AUTHOR INFORMATION AUTHORS AND AFFILIATIONS * Department of Botany, University of Southampton, R. H. MEPHAM & G. R. LANE Authors * R. H. MEPHAM View author publications You

can also search for this author inPubMed Google Scholar * G. R. LANE View author publications You can also search for this author inPubMed Google Scholar RIGHTS AND PERMISSIONS Reprints and

permissions ABOUT THIS ARTICLE CITE THIS ARTICLE MEPHAM, R., LANE, G. Adaptive Significance of the Sculptured Exine of Pollen. _Nature_ 226, 180–181 (1970). https://doi.org/10.1038/226180b0

Download citation * Received: 24 November 1969 * Issue Date: 11 April 1970 * DOI: https://doi.org/10.1038/226180b0 SHARE THIS ARTICLE Anyone you share the following link with will be able to

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