蛋白胨对固氮菌形态的影响。

Vela G R, Rosenthal R S

J Bacteriol. 1972 Jul;111(1):260-6. doi: 10.1128/jb.111.1.260-266.1972.

Pleomorphism in cultures of Azotobacter vinelandii was induced by addition of Difco peptone to the growth medium. Under the conditions of the study, 5% peptone gave rise to transient forms described as "fungoid cells" which were osmotically fragile. After some 48 hr of culture, they became osmotically stable and resumed a more typical morphology. It was shown that the pleomorphism-inducing principle in peptone was glycine.

通过向生长培养基中添加迪夫科蛋白胨，诱导了棕色固氮菌培养物中的多形性。在本研究条件下，5%的蛋白胨产生了被描述为“类真菌细胞”的短暂形态，这些细胞渗透压脆弱。培养约48小时后，它们变得渗透压稳定，并恢复了更典型的形态。结果表明，蛋白胨中诱导多形性的成分是甘氨酸。