Glickmann E, Gardan L, Jacquet S, Hussain S, Elasri M, Petit A, Dessaux Y
Institut des Sciences Végétales, Centre National de la Recherche Scientifique, Gif sur Yvette, France.
Mol Plant Microbe Interact. 1998 Feb;11(2):156-62. doi: 10.1094/MPMI.1998.11.2.156.
We investigated indole-3-acetic acid (IAA) production by 57 pathovars of Pseudomonas syringae and related species. Most of those analyzed produced IAA, especially in the presence of tryptophan. Eight strains produced high IAA concentrations in the absence of Trp. The iaaM and iaaH genes of P. savastanoi pv. savastanoi were detected in a limited number of strains only, including the eight above-mentioned strains. Thus, IAA synthesis in most assayed strains of P. syringae and related species does not involve genes highly similar to iaaM and iaaH. In contrast, the iaaL gene encoding an IAA-lysine synthase was detected in most pathovars, and was often found on plasmids.
我们研究了丁香假单胞菌57个致病变种及相关物种产生吲哚-3-乙酸（IAA）的情况。所分析的大多数菌株都能产生IAA，尤其是在有色氨酸存在的情况下。有8个菌株在没有色氨酸的情况下能产生高浓度的IAA。仅在少数菌株（包括上述8个菌株）中检测到了丁香假单胞菌丁香致病变种的iaaM和iaaH基因。因此，在大多数测定的丁香假单胞菌及相关物种菌株中，IAA的合成并不涉及与iaaM和iaaH高度相似的基因。相反，在大多数致病变种中检测到了编码IAA-赖氨酸合酶的iaaL基因，并且该基因常常存在于质粒上。
