Sahoo Ranjan Kumar, Rani Varsha, Tuteja Narendra
Department of Biotechnology, Centurion University of Technology and Management, Bhubaneswar, Odisha India.
Department of Crop Physiology, Birsa Agricultural University, Ranchi, Jharkhand India.
3 Biotech. 2021 Jun;11(6):275. doi: 10.1007/s13205-021-02835-3. Epub 2021 May 18.
Chromium (Cr) causes toxic effects in plants by generating reactive oxygen species (ROS) which create oxidative environment. helps in growth and development of many crops; however, its role in Cr stress tolerance in rice has not been explored. Here, we report the new function of strain (Accession number JQ796077) in providing Cr stress tolerance in (var. IR64). The efficiency of the strain was checked under different concentrations (50, 100, 150, 200 and 250 µM) of Cr stress and it was observed that it provides stress tolerance to rice plant up to 200 µM concentration. Different agronomic growth parameters were found to be better in this strain of -inoculated rice plants as compared to un-inoculated one. The agronomic growth and photosynthetic characteristics such as net photosynthetic rate (PN), stomatal conductance (gs), intercellular CO (Ci) were also found to be significantly increased with increasing concentration of inoculation. The activities of antioxidant enzymes were significantly higher (35%) in rice plants inoculated with as compared with un-inoculated rice plant. All these positive effects of help rice to survive from the toxic effect of Cr.
铬（Cr）通过产生活性氧（ROS）在植物中产生毒性作用，ROS会营造氧化环境。[具体物质]有助于许多作物的生长和发育；然而，其在水稻耐铬胁迫中的作用尚未得到探索。在此，我们报道了[菌株名称]菌株（登录号JQ796077）在为水稻（品种IR64）提供耐铬胁迫方面的新功能。在不同浓度（50、100、150、200和250 μM）的铬胁迫下检测了该菌株的效率，观察到它在高达200 μM的浓度下为水稻植株提供胁迫耐受性。与未接种的水稻植株相比，发现接种该菌株的水稻植株的不同农艺生长参数更好。随着接种[菌株名称]浓度的增加，农艺生长和光合特性如净光合速率（PN）、气孔导度（gs）、胞间CO₂（Ci）也显著增加。与未接种的水稻植株相比，接种[菌株名称]的水稻植株中抗氧化酶的活性显著更高（35%）。[菌株名称]的所有这些积极作用有助于水稻从铬的毒性作用中存活下来。
