Potential of rice stubble as a reservoir of bradyrhizobial inoculum in rice-legume crop rotation.

This study shows that some rice endophytic bradyrhizobia could perform IAA production, and ACC deaminase activity together with nitrogen fixation ability during symbiosis inside rice tissues. These characteristics may play an important role in rice growth promotion by endophytic bradyrhizobium. However, the NO producing strains should be of concern due to NO possible deleterious effect on rice growth. In addition, this study reports the application of endophytic bradyrhizobia in rice stubbles, and the rice stubbles were used directly as an inoculum for a leguminous plant (mung bean). The degradation of rice stubbles leads to an increased number of SUTN9-2 in the soil and may result in increased mung bean nodulation. Therefore, the persistence of endophytic bradyrhizobia in rice tissues can be developed for using rice stubbles as inoculum for mung bean in the system of rice - legume crop rotation. PMID: 28916558 [PubMed - as supplied by publisher]
Source: Applied and Environmental Microbiology - Category: Microbiology Authors: Tags: Appl Environ Microbiol Source Type: research