Effects of inoculation with N2-fixing cyanobacteria on the nitrogenase activity in soil and rhizosphere of wetland rice (Oryza sativa L.)

1993 ◽  
Vol 16 (1) ◽  
pp. 16-20 ◽  
Author(s):  
T. K. Ghosh ◽  
K. C. Saha
Keyword(s):  
Oryza Sativa ◽  
Nitrogenase Activity ◽  
Oryza Sativa L ◽  
Wetland Rice

Effect of green manuring, blue-green algae and neem-cake-coated urea on wetland rice (Oryza sativa L.)

1990 ◽  
Vol 9 (3) ◽  
pp. 235-238 ◽  
Author(s):  
S. Singh ◽  
R. Prasad ◽  
B. V. Singh ◽  
S. K. Goyal ◽  
S. N. Sharma
Keyword(s):  
Oryza Sativa ◽  
Green Algae ◽  
Oryza Sativa L ◽  
Wetland Rice ◽  
Green Manuring ◽  
Blue Green Algae ◽  
Neem Cake ◽  
Neem Cake Coated Urea ◽  
Coated Urea

Fate of Azolla spp. and urea nitrogen applied to wetland rice (Oryza sativa L.)

1989 ◽  
Vol 8 (2) ◽  
Author(s):  
I. Watanabe ◽  
W. Ventura ◽  
G. Mascari�a ◽  
D.L. Eskew
Keyword(s):  
Oryza Sativa ◽  
Oryza Sativa L ◽  
Wetland Rice ◽  
Urea Nitrogen

scholarly journals Endophytes from African Rice (Oryza glaberrima L.) Efficiently Colonize Asian Rice (Oryza sativa L.) Stimulating the Activity of Its Antioxidant Enzymes and Increasing the Content of Nitrogen, Carbon, and Chlorophyll

2021 ◽  
Vol 9 (8) ◽  
pp. 1714
Author(s):  
Carmen Bianco ◽  
Anna Andreozzi ◽  
Silvia Romano ◽  
Camilla Fagorzi ◽  
Lisa Cangioli ◽  
...  
Keyword(s):  
Oryza Sativa ◽  
Antioxidant Enzymes ◽  
Nitrogenase Activity ◽  
Oryza Sativa L ◽  
Tropical Region ◽  
Oryza Glaberrima ◽  
Bacterial Endophytes ◽  
African Rice ◽  
Asian Rice ◽  
Temperate Climates

Bacterial endophytes support the adaptation of host plants to harsh environments. In this study, culturable bacterial endophytes were isolated from the African rice Oryza glaberrima L., which is well-adapted to grow with poor external inputs in the tropical region of Mali. Among these, six N-fixer strains were used to inoculate O. glaberrima RAM133 and the Asian rice O. sativa L. cv. Baldo, selected for growth in temperate climates. The colonization efficiency and the N-fixing activity were evaluated and compared for the two rice varieties. Oryza sativa-inoculated plants showed a fairly good colonization efficiency and nitrogenase activity. The inoculation of Oryza sativa with the strains Klebsiella pasteurii BDA134-6 and Phytobacter diazotrophicus BDA59-3 led to the highest nitrogenase activity. In addition, the inoculation of ‘Baldo’ plants with the strain P. diazotrophicus BDA59-3 led to a significant increase in nitrogen, carbon and chlorophyll content. Finally, ‘Baldo’ plants inoculated with Kl. pasteurii BDA134-6 showed the induction of antioxidant enzymes activity and the maintenance of nitrogen-fixation under salt stress as compared to the unstressed controls. As these endophytes efficiently colonize high-yielding crop varieties grown in cold temperate climates, they become good candidates to promote their growth under unfavorable conditions.

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