Growth Promotion and Bi-Control Approaches of Brown Root Rot Disease of Tea by Pseudomonas Aeruginosa (PM 105)

Morang, P.; Dutta, B. K.

doi:10.4172/2157-7471.1000129

Cited by 8 publications

(7 citation statements)

References 17 publications

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“…Infection percentages and disease severity were calculated in keeping with Thongkantha et al (2008) and Morang et al (2012) in the following manner:…”

Section: Survey For Stem and Leaf Spots Of Bamboomentioning

confidence: 99%

Occurrence of Stem and Leaf Spots on Lucky Bamboo (Dracaena sanderiana hort. ex. mast.) Plants in Vase and its Cure with Safe Means

Abdel-Rahman

El-Morsy

Halawa

2020

Journal of Plant Protection and Pathology

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Lucky bamboo (Dracaena sanderiana) plants showing stem and leaf spots symptoms of each observed season were monitored during a survey that was conducted in four periods from 2018 to 2019. There were significant differences between the four periods, as well as the mean percentages of infection and disease severity were high (45.92, 44.41 % and 46.15, 55.67%, respectively) During the first (March-May) and third (August-October) study periods in 2018. The same disease symptoms occurred at the same time of observation during 2019 in the several surveyed nurseries, and the percentage of infection and disease severity recorded were in the same trend. There were twelve different fungal pathogens identified as Absidia spinosa, A. Cylindrospora, Alternaria alternata, Aspergillus flavus, A. niger, A. terreus, Aspergillus sp., Colletotrichum gloeosporioides, Fusarium avenaceum, F. oxysporum, F. solani, and Trichoderma harzianum where Colletotrichum gloeosporioides was the most common (26.93 and 26.34 for leaves and stems, respectively). The pathogenicity tests were carried out, where C. gloeosporioides were the most aggressive. The systemic fungicide Kemazed ® and biocontrol agents were demonstrated to be effective in controlling three of the most common aggressive fungi. i.e., C. gloesporioides, F. Oxysporum and A. alternata, In vitro colony growth of fungal isolates was significantly reduced as compared to the untreated control. The bioagents tested had significant antagonistic activity against C. gloesporioides growth on bamboo in a vase, according to the results, with Kemazed ® showing the most consistent highest inhibition effect, followed by Rhizo-N ® and Plant Guard ® , respectively, when compared to the untreated control.

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“…Infection percentages and disease severity were calculated in keeping with Thongkantha et al (2008) and Morang et al (2012) in the following manner:…”

Section: Survey For Stem and Leaf Spots Of Bamboomentioning

confidence: 99%

Occurrence of Stem and Leaf Spots on Lucky Bamboo (Dracaena sanderiana hort. ex. mast.) Plants in Vase and its Cure with Safe Means

Abdel-Rahman

El-Morsy

Halawa

2020

Journal of Plant Protection and Pathology

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“…Endophytic bacterial species, such as Azospirillum species, Bacillus pumilus, Bacillus megaterium, Bacillus amyloliquefaciens, Beijerinckia species, Paenibacillus polymyxa, Pseudomonas aeruginosa, Comamonas acidovorans, and Serratia marcescens have proven to promote C. Sinensis growth through inducing indole-3-acetic acid (IAA), ammonia and siderophore production, phosphate solubilization, and exerting antagonism against pathogens [2,[47][48][49][50][51][52][53].…”

Section: Role Of Endophytic Bacteria In Camellia Sinensis Metabolismmentioning

confidence: 99%

“…This was followed by a field experiment with the same microbial strains as foliar spray to determine their effect on fresh leaf yield. Morang, Dutta, Kumar, and Kashyap [2] isolated and identified P. aeruginosa from C. sinensis plantation soil of Barak Valley, Assam, India. This bacterium showed biocontrol and growth promotion potential against the tea root pathogen Fomes lamoensis in infested 1-year old tea plants under nursery conditions [2].…”

Section: Rolementioning

confidence: 99%

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Understanding Camellia sinensis using Omics Technologies along with Endophytic Bacteria and Environmental Roles on Metabolism: A Review

et al. 2019

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Camellia sinensis is the most consumed beverage worldwide. It contains a wide variety of secondary metabolites, such as alkaloids, saponins, tannins, catechins, and polyphenols, generated through a condensation reaction of cinnamic acid with three malonyl-CoA groups. In addition to the metabolic processes occurring within this plant, there are also some plant-associated bacterial endophytes. These bacteria reside in the living tissues of the host plants without causing any harmful effect to them, thereby stimulating secondary metabolite production with a diverse range of biological effects. Omics technologies reveal understanding of the biological phenomena of transcriptomics, proteomics, and metabolomics. In this sense, the present review aims to provide a comprehensive review of various methods used to identify distinct plant compounds, namely transcriptomic, proteomic, and metabolomic analysis. The role of endophytic bacteria in C. sinensis metabolism, and C. sinensis antioxidant and antimicrobial effects, are also carefully highlighted.

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“…Disease incidence was determined as the percentage of spotted plants (or leaves) relative to the total number of the examined ones according to Morang et al (2012) …”

Section: Disease Incidencementioning

confidence: 99%

Chemical and Biological Control of Dracaena marginata Leaf Spots in Northern Egypt

Hilal¹,

El-Argawy²,

Korany³

et al. 2016

IJAB

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Six common fungicides, Dithane M45, Kocide 2000, Ridomil Gold Plus, Score, Equation Pro and Kemazed were tested for controlling the draceana leaf spot fungi. All the tested fungicides significantly decreased the in vitro growth of the tested dracaena leaf spot fungi. Percentage of inhibition on colony diameter ranged between 49.64% with Dithane M45 to 82.18% with Score which was followed by Kemazed (69.15%). However, inhibition of spore germination was the highest (72.8%) by Dithane M45, while inhibition of germ tube reached 89.91% with Kemazed. Meanwhile, in the in vivo tests, treatment with Kemazed decreased disease incidence of leaf spots on potted plants to 16.67% compared to 100% for the untreated inoculated control. On the other hand, the bacterial and fungal biocontrol agents tested proved to be effective against the dracaena leaf spot fungi. The in vitro assays conducted showed that the bacterial biocontrol agents namely, Stenotrophomonas maltophilia, Pseudomonas ultimum, P. fluorescens, P. putida, P. aeruginosa, Bacillus subtilis, B. megaterium, significantly decreased colony growth diameter (76.84-45.69%) of dracaena leaf spot fungi as well as spore germination (48.80-23.20%) and length of germ tube (88.77-65.65%) of the germinated spores compared to untreated control. Treatment with S. maltophilia showed the most consistent highest inhibition effect, followed by P. ultimum, B. subtilis, and B. megaterium, respectively. The in vivo tests of the most effective bacterial bioagents supported the in vitro results. Treatment with S. maltophilia showed the highest effect as it decreased disease incidence and disease index to 29.33% and 7.6%, respectively in comparison with 100% and 83.6% for the untreated inoculated control in the potted dracaena plants (cv. Bicolor). Meanwhile, the in vitro tests of the three Trichoderma spp., i.e. T. harzianum, T. hamatum and T. album showed significant inhibition effect on colony growth diameter of the tested dracaena leaf spot fungi in which T. harzianum showed the highest inhibition effect (75.02%), while T. album was most effective to inhibit spore germination (48%) and germ tube (90.21%) of the germinated spores. The in vivo tests of the fungal biocontrol agents supported the in vitro results. T. album (Bio-Zeid) showed the highest effect and decreased disease incidence and disease index on potted plants to 19.99% and 4.39%, respectively compared with 100% and 92.8% for the untreated inoculated control.

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Growth Promotion and Bi-Control Approaches of Brown Root Rot Disease of Tea by Pseudomonas Aeruginosa (PM 105)

Cited by 8 publications

References 17 publications

Occurrence of Stem and Leaf Spots on Lucky Bamboo (Dracaena sanderiana hort. ex. mast.) Plants in Vase and its Cure with Safe Means

Occurrence of Stem and Leaf Spots on Lucky Bamboo (Dracaena sanderiana hort. ex. mast.) Plants in Vase and its Cure with Safe Means

Understanding Camellia sinensis using Omics Technologies along with Endophytic Bacteria and Environmental Roles on Metabolism: A Review

Chemical and Biological Control of Dracaena marginata Leaf Spots in Northern Egypt

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