Bacteria need to adopt to different behavioral tuning depending on the dynamic eco-physiological conditions they are exposed to. One of these adaptive strategies is the use of motility. Here we report the twitching motility response of four endophytic isolates of Bacillus sp. when exposed to different eco-physiological stimuli like different nutrient sources, and mechanical and chemical antagonists on solid surfaces. These endophytic bacteria were isolated from different parts of a hemiparasite Loranthus sp. Jacq. (Loranthaceae) growing on economically important mango trees. The results show that the twitching motility of these bacteria was more when exposed to organic acids, metals salts (among nutrients) and mechanical shearing (stress) than the other factors. Their motility is not affected by surface lubrication or EPS production, but instead is influenced by shear-sensitive structures and affinity to metal ions. Further molecular studies are needed to elucidate the basis of this twitching behaviour on solid surfaces.

细菌需要根据暴露的动态生态生理条件采取不同的行为调节。这些适应性策略之一是运动性的利用。在这里，我们报告芽孢杆菌的四个内生菌株的抽搐运动反应。当暴露于不同的生态生理刺激（如不同的营养源）以及固体表面上的机械和化学拮抗剂时。这些内生细菌是从半寄生虫Loranthus的不同部位分离得到的sp。雅克 （茄科）生长在具有重要经济意义的芒果树上。结果表明，与其他因素相比，当暴露于有机酸，金属盐（在营养物质中）和机械剪切（应力）时，这些细菌的抽搐运动性更高。它们的运动性不受表面润滑或EPS产生的影响，而是受剪切敏感的结构和对金属离子的亲和力影响。需要进一步的分子研究来阐明这种在固体表面上的抽动行为的基础。