Thin-layer chromatographic analysis of lumichrome, riboflavin and indole acetic acid in cell-free culture filtrate ofPsoralea nodule bacteria grown at different pH, salinity and temperature regimes

Symbiosis ◽  
2009 ◽  
Vol 48 (1-3) ◽  
pp. 173-181 ◽  
Author(s):  
Sheku Kanu ◽  
Felix D. Dakora
Keyword(s):  
Acetic Acid ◽  
Thin Layer ◽  
Culture Filtrate ◽  
Chromatographic Analysis ◽  
Indole Acetic Acid ◽  
Nodule Bacteria ◽  
Temperature Regimes ◽  
Thin Layer Chromatographic Analysis

Production of phytotoxic substances by Alternaria triticina

1979 ◽  
Vol 57 (11) ◽  
pp. 1255-1258 ◽  
Author(s):  
C. S. K. Vijaya Kumar ◽  
A. S. Rao
Keyword(s):  
Thin Layer ◽  
Culture Filtrate ◽  
Chromatographic Analysis ◽  
Root Elongation ◽  
Susceptible Variety ◽  
Resistant Variety ◽  
Toxic Metabolites ◽  
Thin Layer Chromatographic Analysis ◽  
Phytotoxic Compound

The culture filtrate of Alternaria triticina Prasada & Prabhu inhibited germination and root elongation of seeds of a resistant variety (HD 1982) and a susceptible variety (Kalyan Sona) of wheat. The filtrate-induced symptoms on the leaves of wheat plants were similar to those induced by the fungus. Thin-layer chromatographic analysis of the crude toxin extracted in n-butanol, acetone, and petroleum ether revealed the presence of more than one phytotoxic compound in the culture filtrate of A. triticina. The toxic principles were thermostable and nonspecific and inhibited the growth of wheat. The possible role of toxic metabolites during pathogenesis is suggested.

Isolation and identification of IAA producing endosymbiotic bacteria from Gracillaria corticata (J. Agardh)

2016 ◽  
Vol 5 (12) ◽  
pp. 5179
Author(s):  
Ilahi Shaik* ◽  
P. Janakiram ◽  
Sujatha L. ◽  
Sushma Chandra
Keyword(s):  
Acetic Acid ◽  
Culture Filtrate ◽  
Indole Acetic Acid ◽  
Shoot Growth ◽  
High Salinity ◽  
Saline Soils ◽  
Bacterial Strains ◽  
Isolation And Identification ◽  
Endosymbiotic Bacteria ◽  
Root And Shoot Growth

Indole acetic acid is a natural phytohormone which influence the root and shoot growth of the plants. Six (GM1-GM6) endosymbiotic bacteria are isolated from Gracilaria corticata and screened for the production of IAA out of six, three bacterial strains GM3, GM5 and GM6 produced significant amount of IAA 102.4 µg/ml 89.40 µg/ml 109.43 µg/ml respectively. Presence of IAA in culture filtrate of the above strains is further analyzed and confirmed by TLC. As these bacterial strains, able to tolerate the high salinity these can be effectively used as PGR to increase the crop yield in saline soils.

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