Probing Potential of Native Antagonistic and Plant Growth Promoting Rhizobacteria against Collar Rot Disease of Brinjal

2019 ◽  
Vol 7 (1) ◽  
pp. 496-506
Author(s):  
Bhanothu Shiva ◽  
Keyword(s):  
Plant Growth ◽  
Plant Growth Promoting Rhizobacteria ◽  
Collar Rot ◽  
Plant Growth Promoting ◽  
Growth Promoting ◽  
Rot Disease

scholarly journals Sulfur Application Combined with Planomicrobium sp. Strain MSSA-10 and Farmyard Manure Biochar Helps in the Management of Charcoal Rot Disease in Sunflower (Helianthus annuus L.)

2021 ◽  
Vol 13 (15) ◽  
pp. 8535
Author(s):  
Muhammad Ijaz ◽  
Abdul Sattar ◽  
Ahmad Sher ◽  
Sami Ul-Allah ◽  
Muhammad Zeeshan Mansha ◽  
...  
Keyword(s):  
Plant Growth ◽  
Helianthus Annuus ◽  
Farmyard Manure ◽  
Growth Yield ◽  
Plant Growth Promoting Rhizobacteria ◽  
Charcoal Rot ◽  
Helianthus Annuus L ◽  
Plant Growth Promoting ◽  
Growth Promoting ◽  
Rot Disease

Sunflower (Helianthus annuus L.), a member of the Asteraceae, is one of the major oilseed crops around the world. Charcoal rot caused by Macrophomina phaseolina (Tassi) Goid is the most damaging disease of sunflowers globally. Fungicides are mostly used to control charcoal rot; however, these cause environmental pollution and pose adverse effects on the ecosystem. Therefore, ecofriendly management options are inevitable for the management of charcoal rot disease. Plant mineral nutrition, the use of plant growth-promoting rhizobacteria and biochar have recently been manipulated for the management of different plant diseases. However, the interactive effects of all these treatments have rarely been tested on charcoal rot suppression in sunflowers. This study assessed the influence of sulfur (0 and 2.25 mg/kg) combined with farmyard manure biochar (2%), NPK (20:20:20 mg/kg) and three different plant growth-promoting rhizobacteria (PGPR) strains on the charcoal rot suppression growth, yield, biochemistry and physiology of sunflower. The PGPR strains included in the study were Bacillus sp. strain MR-1/2 (regarded as PGPR1), Achromobacter sp. strain FB-14 (regarded as PGPR2) and Planomicrobium sp. strain MSSA-10 (regarded as PGPR3). The charcoal rot infestation was induced by inoculating the soil with M. phaseolina, and the impacts of the different treatments were studied on the disease infestation, growth, yield, biochemistry and physiology of sunflowers under 0 and 2.25-mg/kg S application. The results revealed that farmyard manure biochar and Planomicrobium sp. strain MSSA-10 in combination with 2.25-mg/kg S proved effective for the management of charcoal rot disease through regulating the antioxidant enzymes’ activities and strengthening the immune system of sunflower plants. The studied health markers (total chlorophyll content and carotenoids) and stress markers (total protein content, catalase and peroxidase) were significantly altered by the applied treatments under 0 and 2.25-mg/kg S applications. The findings of the experiment indicated that both farmyard manure biochar and Planomicrobium sp. strain MSSA-10, combined with 2.25-mg/kg S, could be used to enhance the crop yield and manage charcoal rot disease in sunflowers. Farmyard manure biochar and Planomicrobium sp. strain MSSA-10 are an easy-to-apply, cost-effective, ecofriendly and sustainable option for the management of charcoal rot disease in sunflowers.

Biocontrol efficiency of native plant growth promoting rhizobacteria against rhizome rot disease of turmeric

2019 ◽  
Vol 129 ◽  
pp. 55-64 ◽  
Author(s):  
C. Chenniappan ◽  
M. Narayanasamy ◽  
G.M. Daniel ◽  
G.B. Ramaraj ◽  
P. Ponnusamy ◽  
...  
Keyword(s):  
Plant Growth ◽  
Plant Growth Promoting Rhizobacteria ◽  
Native Plant ◽  
Plant Growth Promoting ◽  
Growth Promoting ◽  
Rot Disease ◽  
Rhizome Rot

scholarly journals In vitro antagonism of five rhizobacterial species against athelia rolfsii collar rot disease in soybean

2018 ◽  
Vol 3 (1) ◽  
pp. 264-272 ◽  
Author(s):  
Irda Safni ◽  
Widya Antastia
Keyword(s):  
Plant Growth ◽  
Burkholderia Cepacia ◽  
Bacterial Species ◽  
Dual Culture ◽  
Collar Rot ◽  
Athelia Rolfsii ◽  
Plant Growth Promoting ◽  
Growth Promoting ◽  
Rot Disease

Abstract Plant Growth Promoting Rhizobacteria (PGPR) influence plant growth by a number of direct (producing plant growth promoting substances) and indirect (through prevention of deleterious effects of phytopathogenic microorganisms) mechanisms. Five species of bacteria were isolated from rhizospheric soils of soybean and peanut fields from several locations in North Sumatra. On the basis of morphological and biochemical characteristics, the bacteria were identified as Aeromonas hydrophila, Burkholderia cepacia, Serratia ficaria, Pantoea spp. 2, and Vibrio alginolyticus. These species were tested in vitro against the causal pathogen of collar rot disease of soybean, Athelia rolfsii, which is an important soybean disease in Indonesia. The five species of bacteria were subjected to screening of antagonistic activities against A. rolfsii in vitro with a dual culture-technique. Of the five species, B. cepacia, S. ficaria and V. alginolyticus were the most effective antagonistic bacteria to control A. rolfsii. B. cepacia, S. ficaria and V. algynolitycus produced inhibiting zones against A. rolfsii of 98.35%, 97.83% and 96.97% respectively. All bacterial species showed their antagonistic activity significantly with the inhibiting zone percentage being more than 60%. The experimental results suggested that all bacterial species have a future potency as a biocontrol agent to reduce A. rolfsii collar rot disease of soybean

scholarly journals Management of Collar Rot of Chickpea (Cicer Arietinum) by Trichoderma Harzianum and Plant Growth Promoting Rhizobacteria

2008 ◽  
Vol 48 (3) ◽  
pp. 347-354 ◽  
Author(s):  
S. Maurya ◽  
Rashmi Singh ◽  
D. Singh ◽  
H. Singh ◽  
U. Singh ◽  
...  
Keyword(s):  
Plant Growth ◽  
Disease Control ◽  
Cicer Arietinum ◽  
Trichoderma Harzianum ◽  
Foliar Application ◽  
Plant Growth Promoting Rhizobacteria ◽  
Plant Mortality ◽  
Collar Rot ◽  
Plant Growth Promoting ◽  
Growth Promoting

Management of Collar Rot of Chickpea (Cicer Arietinum) byTrichoderma Harzianumand Plant Growth Promoting RhizobacteriaCollar rot (Sclerotium rolfsii) of chickpea (Cicer arietinum) is one of the devastating soil-borne diseases of fungal origin, due to which 10-30% yield loss is recorded annually according to severity of the disease. Management of collar rot of chickpea is not feasible in the absence of effective soil fungicides. However,Trichoderma harzianumand plant growth promoting rhizobacteria (PGPR) have shown high efficacy against this diseasein vitroas well as in the field. We usedT. harzianum(104, 106and 108spore/ml) and two PGPRs (Pseudomonas fluorescensstrain 4 andP. aeruginosa) as foliar spray with the fresh and heat inactivated microorganisms. Foliar application ofT. harzianum(108spore/ml) andP. fluorescensstrain 4 (108cfu/ml) showed maximum efficacy in reducing plant mortality as compared to the control. Foliar application of fresh-and heat-inactivated (121°C for 10 min)P. fluorescensstrain 4, andT. harzianumreduced 15-25% plant mortality butP. aeruginosashowed very little disease control of 10-15%. However, regarding plant growth promotion, it was observed that fresh-and heat-inactivatedP. fluorescensstrain 4 showed maximum efficacy followed by fresh and heat inactivatedP. aeruginosaandT. harzianumas compared to the control. The disease-controlling efficacy was also associated with the increase in phenolic acid synthesis in chickpea plants. The control of chickpea collar rot by biocontrol agents is safe and ecologically sound and appears to be a healthy approach to the disease control.

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