Laboratoire de Biotechnologie des Rhizobia et Amélioration des Plantes, Département de Biotechnologie, Faculté des Sciences de la Nature et de la Vie, Université Oran 1, Oran, Algeria.
Arch Microbiol. 2022 Feb 14;204(3):170. doi: 10.1007/s00203-022-02786-0.
To determine whether the use of soil yeasts as inoculum would intervene in improving bean (Phaseolus vulgaris) growth and its symbiotic parameters, various experiments have been carried out. The effect of inoculation by soil yeasts Meyerozyma guilliermondii GP MT258984, Debaryomyces hansenii DFA MT259039, Rhodotorula mucilaginosa LIA MT259358, Rhodotorula mucilaginosa LC MT252049, along with the strain Saccharomyces cerevisiae in their cell or metabolite forms, was investigated in non-sterile (sand) and agricultural substrates (soil), in association or not with mycorrhizal fungi. The results showed that the yeast could have a beneficial effect on the bean biomass directly without increasing its nodulation and mycorrhization, or indirectly by improving those symbiotic parameters. They also revealed a very important ecological aspect and the possibility of inoculating with indigenous soil yeasts to increase the number of fertilising microorganisms, such as mycorrhizae and rhizobia, without resorting to introducing exogenous strains.
为了确定土壤酵母作为接种物的使用是否会干预豆类（菜豆）的生长及其共生参数，已经进行了各种实验。研究了土壤酵母 Meyerozyma guilliermondii GP MT258984、Debaryomyces hansenii DFA MT259039、Rhodotorula mucilaginosa LIA MT259358、Rhodotorula mucilaginosa LC MT252049 以及细胞或代谢物形式的酿酒酵母对非无菌（砂）和农业基质（土壤）中与或不与菌根真菌的联合接种的影响。结果表明，酵母可以直接对豆类生物量产生有益影响，而不增加其结瘤和菌根化，或者通过间接提高那些共生参数来产生有益影响。这些结果还揭示了一个非常重要的生态方面，即有可能通过接种本土土壤酵母来增加固氮微生物（如菌根和根瘤菌）的数量，而无需引入外源菌株。
