Paper Information

Journal:   IRANIAN JOURNAL OF PLANT PATHOLOGY   August 2001 , Volume 37 , Number 1-2; Page(s) 69 To 84.
 
Paper: 

ETIOLOGY, DISTRIBUTION AND PHENOTYPICAL CHARACTERIZATION OF DIFFERENT ISOLATES OF THE ACIDOVORAX AVENAE SUBSP. AVENAE CAUSAL AGENT OF BACTERIAL STRIPE OF RICE IN FARS AND KOHGILUYEH AND BOYREAIIMAD PROVINCES

 
 
Author(s):  ROSTAMI MOSTAFA, TAGHAVI S.M.
 
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Abstract: 

During 1998-1999, nursery paddies of Fars and Kohgiluyeh and Boyreahmad provinces were surveyed and samples showing water-soaked stripes on the leaves and sheaths were collected. A total of 41 isolates of the causal agent were studied. Basd on the biochemical properties and pathogene city on rice seedlings and seeds, the causal agent of stripe of rice was identified as Acidovorax avenae subsp. avenae. Bacterial stripe of rice appears to be widespread among various local rice cultivars. In bioassay tests, some of the isolates showed antifungal activity against Pyriculariagrisea. Antimicrobial activities and lecithinase production were somewhat different among the isolates, thus dividing them into four groups. Electrophoretic profiles of cell proteins of the strains were identical.
The infection rate was low during 1998-1999. In 1998 maximum infection was 3.2% in Kamfiroozi and Mirzaanbarbo cultivars and minimum infection was 2.1% in Lenjani and Kot-siyah cultivars. The rate of seed infection ranged from 3.5% to 5% in different cultivars. Twelve isolates of A. awnae subsp. avenae isolated from rice were pathogenic on corn, sorghum, barley, oat, sugarcane, proso millet, Italian millet, wheat, barnyard grass and Johnson grass, indicating its wide host range.

 
Keyword(s): BACTERIAL STRIPE OF RICE, ACIDOVORAX AVENAE SUBSP, AVENAE
 
References: 
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