Dey Riddha, Raghuwanshi Richa
Department of Botany, Institute of Science, Banaras Hindu University, Varanasi 221005, Uttar Pradesh, India.
Department of Botany, Mahila Mahavidyalaya, Banaras Hindu University, Varanasi 221005, Uttar Pradesh, India.
Heliyon. 2020 Oct 22;6(10):e05325. doi: 10.1016/j.heliyon.2020.e05325. eCollection 2020 Oct.
Conventional agricultural practices demand application of pesticides for better yield, yet their uncontrolled use for longer duration exhibit deleterious effects on the soil health and subsequent plant productivity. These circumstances have displayed alarming effects on food security in the modern world. Therefore, biological solutions to the crisis can be practiced in consideration to their environmental benefits. Bacterial endophytes are ubiquitous in the phytosystem and beneficial for the plant growth and productivity. The present study aimed to obtain endophytic bacterial strains that can be developed as effective plant growth promoters. For this purpose twelve strains of bacterial endophytes were isolated from different plant sources and their putative plant growth promoting attributes were analyzed by morphological and biochemical studies. Subsequently these isolates were inoculated in the (Tomato) and the factors like germination percentage, seedling length, biomass production, and leaf variables were analyzed. However, the vigour index was considered as the prime parameter for determining plant growth. In essence, RR2 and RR4 strains were observed as effective growth promoter, hence in future they can be utilized as effective biofertilizers.
传统农业做法需要使用农药以提高产量，然而长期无节制地使用农药会对土壤健康和随后的作物生产力产生有害影响。这些情况对现代世界的粮食安全已显示出惊人的影响。因此，鉴于其环境效益，可以采用生物方法来应对这一危机。细菌内生菌在植物系统中普遍存在，对植物生长和生产力有益。本研究旨在获得可开发为有效植物生长促进剂的内生细菌菌株。为此，从不同植物来源分离出12株细菌内生菌，并通过形态学和生化研究分析了它们假定的植物生长促进特性。随后，将这些分离株接种到番茄中，并分析了发芽率、幼苗长度、生物量生产和叶片变量等因素。然而，活力指数被视为确定植物生长的主要参数。从本质上讲，RR2和RR4菌株被视为有效的生长促进剂，因此未来它们可被用作有效的生物肥料。
