Endophytic bacteria with multi-trait plant probiotic features have been demonstrated to have applications to enhance agricultural productivity by supporting the plant growth, yield and disease resistance under harsh environmental conditions. The xerophytic plant Ananas comosus was selected as the source for endophytic bacterial isolation in the current study. This has resulted in the identification of organisms with antifungal and plant growth promoting properties. Interestingly, endophytic bacteria with antifungal activity were found to have drought tolerance property also. These organisms were demonstrated to express the plant beneficial mechanisms like IAA, ACC deaminase and nitrogen fixation under drought condition. The selected organisms were further identified as Bacillus sp. (Acb9), Providencia sp. (Acb11), Staphylococcus sp. (Acb12), Staphylococcus sp. (Acb13) and Staphylococcus sp. (Acb14)(Acb 14). In addition, LC-MS/MS analysis of extract from Acb 9 has resulted in the identification of surfactin with m/z of 994. Priming of selected endophytes with Vigna radiata seedlings also showed enhanced growth parameters such as shoot length, root length and root numbers when compared to the control. The shoot length of Acb 9 treatment was found to be 18.833 ± 0.687 cm, where the control value for same was 13.976 ± 0.585 cm and the root length was 3.9 ± 0.99 when compared to control (1.54 ± 0.628). The root length was 3.9±0.99 which was also higher than control (1.54±0.62).The results of the study indicate the promise of endophytic bacteria for field application under changing agro-climatic conditions.

具有多特性植物益生菌特征的内生细菌已被证明可通过在恶劣的环境条件下支持植物的生长，产量和抗病性来提高农业生产力。本研究选择了旱生植物凤梨（Ananas comosus）作为内生细菌分离的来源。这导致鉴定出具有抗真菌和促进植物生长特性的生物。有趣的是，发现具有抗真菌活性的内生细菌也具有耐旱性。这些生物被证明可以表达植物在干旱条件下的有益机制，如IAA，ACC脱氨酶和固氮。选定的生物被进一步鉴定为芽孢杆菌属。（Acb9），Providencecia sp.。（Acb11），葡萄球菌sp。（Acb12），葡萄球菌sp。（Acb13）和葡萄球菌sp。（Acb14）（Acb 14）。此外，对Acb 9提取物的LC-MS / MS分析还可以鉴定出表面活性素，m / z为994。用Vigna radiata幼苗对选定的内生菌进行引种还显示出增强的生长参数，例如苗长，根长和根与对照相比的数字。发现与对照（1.54±0.628）相比，Acb 9处理的芽长为18.833±0.687cm，其中对照值为13.976±0.585cm，根长为3.9±0.99。根长为3.9±0.99，也比对照高（1.54±0.62）。研究结果表明，内生细菌有望在农业气候条件变化的条件下进行田间应用。