Evidence thatDL-3-aminobutyric acid and acibenzolar-S-methyl induce resistance against bacterial head rot disease of broccoli

2005 ◽  
Vol 61 (11) ◽  
pp. 1110-1114 ◽  
Author(s):  
Emmanuel Pajot ◽  
Drissa Silué
Keyword(s):  
Aminobutyric Acid ◽  
Induce Resistance ◽  
Rot Disease ◽  
Head Rot

Occurrence of head rot disease caused by Fusarium verticillioides on Chinese flowering cabbage (Brassica rapa L subsp. parachinensis) in China

2020 ◽  
Vol 134 ◽  
pp. 105180
Author(s):  
Waheed Akram ◽  
Aqeel Ahmad ◽  
Guo Juxian ◽  
Nasim Ahmad Yasin ◽  
Muhammad Akbar ◽  
...  
Keyword(s):  
Brassica Rapa ◽  
Fusarium Verticillioides ◽  
Rot Disease ◽  
Head Rot

The etiology of head rot disease of broccoli

1987 ◽  
Vol 38 (4) ◽  
pp. 735 ◽  
Author(s):  
DLS Wimalajeewa ◽  
ND Hallam ◽  
AC Hayward ◽  
TV Price
Keyword(s):  
Tomato Fruit ◽  
Field Tests ◽  
Fluorescent Pseudomonad ◽  
Isolation Technique ◽  
Disease Symptoms ◽  
Pathogenicity Tests ◽  
Rot Disease ◽  
Head Rot ◽  
Physiological And Biochemical Characters ◽  
Physiological And Biochemical

Transmission and scanning electron microscope studies of broccoli florets affected by head rot, at various stages of disease development, strongly indicated a bacterial etiology for the disease. Nevertheless, the different species of bacteria isolated from diseased heads, using standard techniques, failed to reproduce symptoms in pathogenicity tests conducted in the glasshouse and in the field. However, a modified isolation technique, using broccoli heads showing incipient watersoaking symptoms, yielded a fluorescent pseudomonad which reproduced disease symptoms readily in glasshouse and field tests. On the basis of physiological and biochemical characters, the pathogenic bacterium was identified as a highly pectolytic pathovar of Pseudomonas marginalis. The bacterium also caused the rotting of potato, tomato and swede turnip slices, and also of intact and detached tomato fruit. However, it was not pathogenic on lettuce, parsnip or lucerne, and also failed to rot carrot slices.

scholarly journals FIRST REPORT OF BACTERIAL HEAD ROT DISEASE CAUSED BYPECTOBACTERIUM ATROSEPTICUM ON SUNFLOWER IN PAKISTAN

2017 ◽  
Vol 29 (1) ◽  
pp. 167
Author(s):  
Shahzad Asad ◽  
Anjum Munir ◽  
Ayub Khan ◽  
Ishaq Ahmad ◽  
Muhammad Arshad
Keyword(s):  
Agricultural Research ◽  
Colony Growth ◽  
Pathogenicity Test ◽  
Biochemical Tests ◽  
Isolation And Purification ◽  
Pectobacterium Atrosepticum ◽  
First Report ◽  
Sunflower Crop ◽  
Rot Disease ◽  
Head Rot

is an important oil seed crop in Pakistan. During a field visit at National Agricultural Research Center (NARC), Islamabad, Pakistan bacterial head rot disease caused by Pectobacterium atrosepticum (formly Erwinaia caratovora subsp. atroseptica) has been observed on both local and exotic hybrids of Sunflower crop. Pathogenicity test has been carried out to fulfill Koch’s postulates. White and creamy colony growth was observed upon isolation and purification of the bacteria. Biochemical tests were conducted at Crop Diseases Research Institute (CDRI), NARC, Islamabad. Pathogenicity test has confirmed the presence of Pectobacterium atrosepticum on sunflower. This is first report documented this pathogen on sunflower crop in Pakistan.

scholarly journals Systemic induced resistance

2002 ◽  
Vol 38 (SI 1 - 6th Conf EFPP 2002) ◽  
pp. S122-S125
Author(s):  
Y. Cohen
Keyword(s):  
Amino Acid ◽  
Penicillium Chrysogenum ◽  
Plant Disease ◽  
Control Plant ◽  
Aminobutyric Acid ◽  
Systemic Resistance ◽  
Local Resistance ◽  
Protein Amino Acid ◽  
Soil Borne Pathogens ◽  
Induce Resistance

Biotic and abiotic agents may induce resistance in plants against pathogens. Abiotic agents may be synthetic or natural. The natural, non-protein amino acid BABA (DL-β-aminobutyric acid) induces systemic resistance in crop plants against pathogens. Dry, killed mycelia of Penicillium chrysogenum (DM) induces local resistance in plants against soil-borne pathogens. The activity of BABA and DM are described here in detail. Both products were shown to effectively control plant disease in nature.

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