ICAR-Indian Agricultural Research Institute, Gauria Karma, Hazaribagh, Jharkhand, 825405, India.
School of Agricultural Sciences, Sharda University, Knowledge Park III, Greater Noida, 201306, India.
Curr Microbiol. 2022 Jan 4;79(2):53. doi: 10.1007/s00284-021-02732-1.
The present study was performed to evaluate the efficacy of selected potential nitrogen-fixing cyanobacterial strain (Anabaena sp.), isolated from rhizospheric soil of rice plants on growth, pigments, N uptake, root architecture, and image-based phenotypic traits of rice crop using co-cultivation approach under controlled sand culture conditions. We studied the beneficial interaction of cyanobacterium to rice using sensor image-based Phenomics approach as well as conventional methods. Co-cultivation experiment revealed that inoculation with Anabaena sp. significantly improved plant growth, chlorophyll, leaf area, % nitrogen, and protein of rice by ~ 70%, ~ 22%, ~ 60%, and ~ 25% under 100% nitrogen input in comparison with un-inoculated control. Further, comparative evaluation revealed superior performance of Anabaena sp. at 100% and 75% N followed by 50% N input improving below-ground parameters as well as phenotypic traits as compared to control treatment. Hence, inoculation performed better with inorganic nitrogen input for overall growth of rice crop. Therefore, cyanobacterial strain can be used as an efficient bio-inoculant for sustainable rice production under integrated nutrient management.
本研究旨在评估从水稻根际土壤中分离出的选定潜在固氮蓝藻（Anabaena sp.）菌株在受控沙培条件下通过共培养方法对水稻生长、色素、氮吸收、根系结构和基于图像的表型特征的影响。我们使用基于传感器的表型组学方法以及常规方法研究了蓝藻与水稻之间的有益相互作用。共培养实验表明，与未接种对照相比，接种 Anabaena sp. 可显著提高水稻的生长、叶绿素、叶面积、氮含量和蛋白质含量，在 100%氮输入下分别提高约 70%、22%、60%和 25%。此外，与对照处理相比，在 100%和 75%氮输入下，Anabaena sp. 的表现优于 50%氮输入，可改善地下参数和表型特征。因此，与无机氮输入相比，接种菌在水稻作物的整体生长中表现更好。因此，蓝藻菌株可作为综合养分管理下可持续水稻生产的有效生物接种剂。
