Occurrence of aerobic nitrogen fixing bacteria in wetland and dryland plants
نویسندگان
چکیده
منابع مشابه
Nitrogen-fixing (acetylene redution) activity and population of aerobic heterotrophic nitrogen-fixing bacteria associated with wetland rice.
Nitrogen-fixing activity associated with different wetland rice varieties was measured at various growth stages by an in situ acetylene reduction method after the activities of blue-green algae (cyanobacteria) in the flood water and on the lower portion of the rice stem were eliminated. Nitrogen-fixing activities associated with rice varieties differed with plant growth stages. The activities i...
متن کاملStudies of aerobic non-symbiotic nitrogen-fixing bacteria.
The occurrence of aerobic, non-symbiotic, nitroqen-fixing bacteria was determined in samples of soil collecte~l in the various soil zones of Allxrm and Saslcatchewan. Mannitol and sodiuttl betuoate dust-platrs. and mallnit01 solution cultures wiLh subsequent inoculation onto rnannitol agar demonstrated that Asolohnrtt-r were not wirlcspreatl in the Canadian prairie province soils. These r)n)ccr...
متن کاملFate of Nitrogen-Fixing Bacteria in Crude Oil Contaminated Wetland Ultisol
The effect of crude oil on the growth of legumes (Calopogonium muconoides and Centrosema pubescens) and fate of nitrogen-fixing bacteria in wetland ultisol was investigated using standard cultural techniques. The results revealed observable effects of oil on soil physico-chemistry, plant growth and nodulation as well as on densities of heterotrophic, hydrocarbonoclastic and nitrogen fixing bact...
متن کاملFerredoxins from Nitrogen-Fixing Bacteria
Two ferredoxins have been purified from N2-fixing Mycobacterium flavum. Ferredoxin I had a minimum molecular weight (by amino acid analysis) of 11 230 and contained 7.4 mol Fe and 7.0 mol S2per mol. The ratio of the absorbance at 400 nm to that at 275 nm was 0.7. Ferredoxin I1 had a minimum molecular weight of 13478 and contained 3.4 mol Fe and 3.2 mol S2per mol. The ratio of the absorbance at ...
متن کاملNitrogen-Fixing Bacteria in Eucalyptus globulus Plantations
Eucalypt cultivation is an important economic activity worldwide. In Portugal, Eucalyptus globulus plantations account for one-third of the total forested area. The nutritional requirements of this crop have been well studied, and nitrogen (N) is one of the most important elements required for vegetal growth. N dynamics in soils are influenced by microorganisms, such as diazotrophic bacteria (D...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Soil Science and Plant Nutrition
سال: 1981
ISSN: 0038-0768,1747-0765
DOI: 10.1080/00380768.1981.10431262