Datei:Mikroskopie 2021-01 Betula pubescens.pdf: Unterschied zwischen den Versionen

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 == Beschreibung ==
-Amyloplasten in Pollen von Betula pubescens
+Amyloplasten in Pollen von Betula pubescens <br>
+Amyloblasts in pollen from Betula pubescens Large accumulations of granules have been observed in pollen from Betula pubescens. The granules could be stained dark brown to black with aqueous potassium iodine solution which confirms that these granules are made out of starch (amyloplasts). They were approximately 3 (1.7 – 4.4) µm in size. The pollen itself had an equatorial diameter of 27 (21.7 – 32.2) µm. Those pollen with many amyloplasts were about 29 (24.4 – 34.6) µm in size. Birch trees are highly allergenic for hay fever patients. The top allergic protein, Bet V 1, is mainly bound to the starch granules. There are only small amounts in the cytosol or pollen wall. It is open whether pollen with many amyloplasts also contain more allergens and whether the granular birch pollen is potentially more troublesome for allergy sufferers than pollen without or with low amounts of granules.
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