Antagonistic Potential of Endophytic Bacteria Against Phytophthora palmivora Causing Black Pod Rot Disease on Cacao (Theobroma cacao L.) In Indonesia

Masanto,; Wibowo, Arif; Joko, Tri; Subandiyah, Siti; Kageyama, Koji

doi:10.3923/ppj.2020.22.41

Cited by 7 publications

(1 citation statement)

References 43 publications

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“…In a dual culture assay, the bacterial isolate PTKU12 with the highest antagonistic manner was identified as B. subtilis. The antagonistic potential of B. subtilis in this study displayed the same manner as in previous studies that reported the antagonistic properties of B. subtilis against P. palmivora generating black pod rot disease on cacao [43]. Moreover, B. subtilis LKM-BL isolated from the tissues of healthy cacao trees presented the highest antifungal activity to hinder the growth of the pathogenic fungus P. palmivora using the dual culture method [44].…”

Section: Table 1 Inhibition Of Bacterial Isolates On the Growth Of Ph...supporting

confidence: 80%

Global Metabolic Changes by Bacillus Cyclic Lipopeptide Extracts on Stress Responses of Para Rubber Leaf

et al. 2023

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Changing environmental conditions can generate abiotic stress, such as the scarcity of water and exposure to chemicals. This includes biotic stress like Phytophthora palmivora infection, which causes leaf fall disease and inhibits the growth rate of para rubber seedlings, resulting in economic loss. To prevent abiotic and biotic stresses, biocontrol agents such as cyclic lipopeptides (CLPs) from Bacillus spp. have been introduced to reduce the use of chemically synthesized fungicides and fertilizers. This study aimed to use Bacillus CLP extracts as a biological agent to stimulate the plant growth system in para rubber seedlings under stress conditions compared with the exogenous plant hormone (salicylic acid, SA). CLP extracts obtained from B. subtilis PTKU12 and exogenous SA were applied to the leaves of para rubber seedlings. The extracted metabolites from each treatment were analyzed by untargeted metabolomics for metabolite identification and metabolic networks under stress responses. In both treatments, 1,702 and 979 metabolites were detected in the positive and negative ion modes of electrospray ionization, respectively. The differential analysis revealed that the accumulation of up-regulated metabolites in the treatment of CLP extracts was higher than in the exogenous SA treatment, belonging to 56 metabolic pathways. The analysis of metabolic pathways indicated that CLP extracts employed alanine, aspartate, and glutamate metabolisms for stress responses leading to plant growth promotion. These findings revealed that the metabolic network for plant growth promotion induced by BacillusCLP extracts could be considered a protective option for para rubber plantations. Doi: 10.28991/ESJ-2023-07-03-022 Full Text: PDF

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Section: Table 1 Inhibition Of Bacterial Isolates On the Growth Of Ph...supporting

confidence: 80%

Global Metabolic Changes by Bacillus Cyclic Lipopeptide Extracts on Stress Responses of Para Rubber Leaf

et al. 2023

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Fungal and bacterial endophytes antagonistic to Phytophthora species causing root rot in Cinnamomum cassia

et al. 2023

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Endophytes were investigated for their potential to protect Cinnamomum cassia (cinnamon) from Phytophthora root rot. From healthy cinnamon trees in diseased plantations, 134 bacterial and fungal endophytes were isolated and screened in vitro for their ability to antagonise the root rot pathogens Phytophthora cinnamomi, P. multibullata and P. × vanyenensis. Seventeen endophytes exhibiting high levels of antagonism in vitro (more than 45%) were then tested in a glasshouse study for their ability to reduce the impact of Phytophthora infection in cinnamon seedlings. Trials using cinnamon seeds or seedlings inoculated with an endophyte and then infested with Phytophthora identified three endophytes expressing high levels of disease suppression (based on root damage reduction) and plant growth promotion. These were Penicillium citrinum, Xylaria curta and Clonostachys rosea. These endophytes can potentially be used in the biological control of root rot in cinnamon, but this must be explored further under field conditions.

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Plant-endophyte associations: Rich yet under-explored sources of novel bioactive molecules and applications

Tiwari

Kang²,

Bae³

2023

Microbiological Research

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Antagonistic Potential of Endophytic Bacteria Against Phytophthora palmivora Causing Black Pod Rot Disease on Cacao (Theobroma cacao L.) In Indonesia

Cited by 7 publications

References 43 publications

Global Metabolic Changes by Bacillus Cyclic Lipopeptide Extracts on Stress Responses of Para Rubber Leaf

Global Metabolic Changes by Bacillus Cyclic Lipopeptide Extracts on Stress Responses of Para Rubber Leaf

Fungal and bacterial endophytes antagonistic to Phytophthora species causing root rot in Cinnamomum cassia

Plant-endophyte associations: Rich yet under-explored sources of novel bioactive molecules and applications

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