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Soil Inoculation with Pseudomonas Aeruginosa 3MT Eliminates the Inhibitory Effect of 3- Chloro- and 4-Chlorobenzoate on Tomato Seed Germination.

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Title Soil Inoculation with Pseudomonas Aeruginosa
3MT Eliminates the Inhibitory Effect of 3-
Chloro- and 4-Chlorobenzoate on Tomato Seed
Germination.
 
Creator Ajith Kumar, P. V.
Gangadhara, K. P.
Manilal, P.
Kunhi, A. A. M.
 
Subject 02 Soil Sciences
04 Microbiology
03 Tomato
 
Description The e�ects of 3-chloro- and 4-chlorobenzoate (3-CBA, 4-CBA) on the germination of di�er-
ent crop seeds were tested. Brinjal (egg plant) and tomato seeds were highly sensitive to 200 mg lÿ1 of
either 3-CBA or 4-CBA and showed marked reduction in germination percentage and seedling vigour
index. A number of abnormalities were observed in all seedlings at higher concentrations of the chemi-
cals. At 400 mg mlÿ1 germination of tomato seeds was completely inhibited on moist ®lter paper. A
marked reduction in protease activity was observed in germinating tomato seeds treated with these
chemicals. Inoculation of 3-CBA- or 4-CBA-treated soil with a chlorobenzoate-degrading Pseudomonas
aeruginosa 3mT (1 mg gÿ1 soil) completely protected the tomato seeds and seedlings. The inoculated bac-
terial strain grew well in the soil utilizing the chlorobenzoates and developed 1�109 and 8�108 cfu gÿ1
in 3-CBA- and 4-CBA-treated soil, respectively, as against of 3�107 cfu gÿ1 in the absence of these
chlorobenzoates.
 
Date 1999
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
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Identifier http://ir.cftri.com/2193/1/Soil%20Biology%20and%20Biochemistry%20Volume%2030%2C%20Issues%208%E2%80%939%2C%20August%201998%2C%20Pages%201053%E2%80%931059.pdf
Ajith Kumar, P. V. and Gangadhara, K. P. and Manilal, P. and Kunhi, A. A. M. (1999) Soil Inoculation with Pseudomonas Aeruginosa 3MT Eliminates the Inhibitory Effect of 3- Chloro- and 4-Chlorobenzoate on Tomato Seed Germination. Soil Biology and Biochemistry, 30 (8/9). pp. 1053-1059.