Fig. 8From: Usage of the cyto-genetics and cytology to identify the action mechanisms of two bio-fertilizers on Allium cepa meristematic cellsUltra-thin section in Allium cepa root tip meristems shows the effect of 3 h of direct treatment with 20.0% yeast extract on cell organelles: mitochondria (M), dilated mitochondria (dM), and accumulated endoplasmic reticulum (ER) wrapped around other undistinguishable organelles in addition to huge autophagic vacuole (AV) with engulfed organellesBack to article page