Changes in the ultrastructure of mitochondria of roots ofTriticale subjected to anaerobiosis

Summary Anaerobiosis induces the formation of tubular inclusions within the mitochondria ofTriticale roots. These inclusions show a close relationship to the inner membrane of the mitochondrial envelope. Mitochondria of anaerobically cultured roots also become larger and fewer in number. Cristae become less numerous and more dilated in appearance. Despite these alterations the mitochondria retain their metabolic integrity, if the period of anaerobiosis does not exceed 24 hours. Periods of anaerobiosis in excess to 24 hours are increasingly deleterious to the metabolism and structure of the root cells and will eventually lead to their death.