Bajwa R, Read D J
Department of Botany, The University, Sheffield S10 2TN, UK.
New Phytol. 1985 Nov;101(3):459-467. doi: 10.1111/j.1469-8137.1985.tb02852.x.
The ericoid mycorrhizal endophyte Hymenoscyphus ericae (Read) Korf &Kernan was grown both in pure culture and in mycorrhizal association with the host plant Vaccinium corymbosum L. on media containing peptides of differing chain length as sole nitrogen sources. The ability to utilize the peptide nitrogen was assessed in terms of growth of the fungus and of growth and nitrogen content of the plants. The tripeptide, glutathione, and alanine units of 1-6 amino acid residues in length were all readily utilized by the endophyte, though assimilation was less rapid in the case of the longer chain lengths. Mycorrhizal seedlings showed significantly higher yields and had higher nitrogen contents than non-mycorrhizal seedlings in almost all cases. The physiological and ecological implications of these results are discussed.
石楠状菌根内生真菌欧石楠瓶霉（Hymenoscyphus ericae (Read) Korf & Kernan）在纯培养条件下以及与宿主植物蓝莓（Vaccinium corymbosum L.）形成菌根共生关系时，在以不同链长的肽作为唯一氮源的培养基上生长。根据真菌的生长以及植物的生长和氮含量来评估利用肽氮的能力。三肽、谷胱甘肽以及长度为1 - 6个氨基酸残基的丙氨酸单元都能被内生真菌轻易利用，不过对于较长链长的肽，同化速度较慢。在几乎所有情况下，菌根化幼苗的产量显著更高且氮含量也比非菌根化幼苗更高。本文讨论了这些结果的生理和生态意义。
