Increase in Dry Weight and Total Nitrogen Content in Zea mays and Setaria italica Associated with Nitrogen-fixing Azospirillum spp.
Year: 1980
Type: article
Abstract: The association between nitrogen-fixing bacteria from the genus Azospirillum and the grasses Zea mays and Setaria italica was investigated in sterilized Leonard-jar assemblies. Nitrogen-fixing bacteria isolated from Cynodon dactylon roots in Israel and Azospirillum brasilense (Sp-7, Sp-80, and Cd) were examined. C(2)H(2) reduction activity was detected in systems containing 0.0 to 0.08 but not in those containing 0.16 gram per liter NH(4)NO(3). The organisms tested significantly increased plant dry weight (50-100%), total N content of leaves (50-100%) and C(2)H(4) production (300-1000 nanomoles C(2)H(4) per plant per hour). Highest C(2)H(2) reduction activities were obtained above 30 C and with high light intensities. Significant increases in S. italica dry weight (DW) and nitrogen (N) content were observed in sand (DW = 80%, N = 150%), sandy loam soil (DW = 80%, N = 75%) and loess (DW = 37%, N = 25%). The results obtained in this work clearly demonstrate the potential benefit of inoculating grasses with Azospirillum.
Source: PLANT PHYSIOLOGY
DOI: 10.1104/pp.66.4.746
Institution: Hebrew University of Jerusalem
Language: English
Subfield: Plant Science
Domain: Life Sciences
SDG: Zero hunger
Open Access status: bronze
OpenAlex ID: W1995263728