Department of Botany, Savitribai Phule Pune University, Pune, 411 007, India.
Department of Microbiology, Savitribai Phule Pune University, Pune, 411 007, India.
J Biotechnol. 2021 Feb 20;328:47-58. doi: 10.1016/j.jbiotec.2021.01.012. Epub 2021 Jan 18.
Basmati and non-basmati rice varieties are commercially important. Aromatic rice varieties are low yielding and recently depletion in aroma is observed due to the shift towards modern agriculture. Therefore, it is necessary to restore the aroma and increase the yield through sustainable agriculture. The use of microbial bioinoculants is one of the promising ways to achieve these targets. With these objectives, rhizospheric bacterial strains Enterobacter hormaechei (AM122) and Lysinibacillus xylanilyticus (DB25) having the property of synthesizing 2-acetyl-1-pyrroline (2AP) were isolated from the rhizosphere of two aromatic rice varieties, Ambemohar-157 and Dehradun Basmati respectively and their effect on plant growth, aroma and yield enhancement under mono-inoculation and consortium conditions was analyzed. The bacterial inoculum in consortium resulted in significant improvement in vegetative growth, yield and 2AP content over mono inoculation and control. The study highlights the potential of E. hormaechei and L. xylanilyticus in plant growth, yield and aroma enhancement in basmati and non-basmati rice varieties. These strains can be taken up further for developing a commercial bioformulation.
巴斯马蒂和非巴斯马蒂大米品种具有商业重要性。芳香型大米品种产量较低,由于现代农业的发展,最近香气耗竭的现象越来越严重。因此,有必要通过可持续农业来恢复香气并提高产量。使用微生物生物菌剂是实现这些目标的一种有前途的方法。基于这些目标,从两种芳香型水稻品种 Ambemohar-157 和 Dehradun Basmati 的根际中分离到具有合成 2-乙酰-1-吡咯啉(2AP)特性的根际细菌菌株肠杆菌属(AM122)和解木聚糖芽孢杆菌(DB25),并分析了它们在单接种和混合接种条件下对植物生长、香气和产量提高的影响。与单接种和对照相比,混合接种的细菌接种剂在营养生长、产量和 2AP 含量方面有显著提高。该研究强调了肠杆菌属和解木聚糖芽孢杆菌在提高巴斯马蒂和非巴斯马蒂大米品种生长、产量和香气方面的潜力。这些菌株可以进一步用于开发商业生物制剂。
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