What benefits of Azorhizobium caulinodans have been cited in the scientific literature?
Nine distinct benefits are cited for Azorhizobium caulinodans across peer-reviewed research. Studies report improved fresh weight, dry weight, shoot and root lengths, chlorophyll content, and antioxidant enzyme activity (CAT, SOD) in Sesbania rostrata and switchgrass (Panicum virgatum L.) under salt stress, with some parameters recovering to near-normal levels. Wheat (Triticum aestivum L.) growth promotion following colonization and an approximately 47% increase in rice seedling growth in in planta screening are also reported.
1AAPFCO-accepted claims
Listing details- Nitrogen-fixing. It can establish typical rhizobial associations but has limited host associations, primarily limited to Sesbania.
- Under certain conditions it has been associated with increases in wheat yield.
Accepted wording, shown verbatim · source: AAPFCO Plant Biostimulant list
2Potential claims from the literature
Reported to increase fresh plant weight, chlorophyll a content, protein content, and peroxidase (POD) activity in switchgrass (Panicum virgatum L.) seedlings under normal conditions
Reported to significantly increase fresh weight, dry weight, shoot and root lengths, and chlorophyll contents of switchgrass seedlings under salt stress, with some parameters recovering to normal levels
Reported to alleviate salt stress in switchgrass (Panicum virgatum L.) seedlings by increasing water content, photosynthetic efficiency, osmotic pressure maintenance, and reactive oxygen species (ROS) scavenging abilities, and by regulating miRNA expression
Reported to significantly increase plant height, biomass, chlorophyll content, proline content, catalase (CAT) activity, and superoxide dismutase (SOD) activity, and reduce malondialdehyde (MDA) levels in Sesbania rostrata under salt stress
Reported to have a positive effect on improving salt stress tolerance in Sesbania rostrata, associated with increasing chlorophyll synthesis and antioxidant enzyme activity and changing amino acid content
Reported to promote growth of wheat (Triticum aestivum L.) following colonization via various inoculation methods
Reported to increase rice seedling growth by approximately 47% in in planta screening experiments
Reported to form nitrogen-fixing root nodules on its host legume Sesbania rostrata, an agriculturally significant symbiotic relationship important in lowland rice cultivation that allows nitrogen fixation under flood conditions
Reported to be engineerable for inducible nitrogenase activity in cereal endophyte contexts, with strategies to eliminate ammonium repression and place nitrogenase expression under control of agriculturally relevant signals including root exudates, biocontrol agents, and phytohormones
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