Effect of formulated bioorganic containing Burkholderia GanoEB2 in suppressing Ganoderma disease in oil palm seedlings

Nadhrah, Norsilan Ili; Nulit, Rosimah; Ramli, Nurrashyeda; Idris, Abu Seman

doi:10.17221/26/2014-pps

Cited by 14 publications

(8 citation statements)

References 15 publications

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“…Severity indices in the last assessment of the experiment ranged from 23 to 34%, and was lower than those reported by [ 29 ] and [ 51 ] who used the same disease severity scale in seedlings artificially inoculated with G. boninense , with values of 87 and 90.4%, respectively. However, our severity values are closer to those reported by [ 48 ] for G. zonatum , with values of 34.08 and 43.78% for two isolates analyzed in the study.…”

Section: Discussioncontrasting

confidence: 66%

Ganoderma zonatum Is the Causal Agent of Basal Stem Rot in Oil Palm in Colombia

Castillo¹,

Rodríguez²,

González-Concha³

et al. 2022

JoF

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Basal stem rot (BSR), caused by Ganoderma spp., is one of the most important emerging oil palm diseases in Colombia, and is restricted to two oil palm production areas in the country. To identify the causal agent of the disease, basidiocarp of oil palms affected by BSR were used to prepare isolates, and their pathogenicity was then assessed in pre-nursery plants. Four-month-old oil palm seedlings were inoculated with rubber wood (Hevea brasiliensis) blocks colonized with dikaryotic mycelia of Ganoderma. The incidence, severity, and symptoms of the pathogen were assessed. A multiregional analysis (ITS, rpb2, and tef1-α) was carried out to identify the isolates; all isolates were determined to be Ganoderma zonatum. Phylogenetic analyses with the three regions yielded concordant phylogenetic information and supported the distinction of the isolates with high bootstrap support. Seven isolates (CPBsZN-01-29, CPBsZN-02-30, CPBsZN-03-31, CPBsZN-04-34, CPBsZN-05-35, CPBsZN-06-36, and CPBsZN-07-38) were pathogenic in oil palm, with incidences greater than 90% and a maximum severity of 34%, and the highest severity index was found in isolates CPBsZN-03-31, CPBsZN-04-34, and CPBsZN-06-36. The pathogen was recovered from inoculated oil palms in all cases. This study reveals the pathogenic association of Ganoderma zonatum with BSR in Colombia.

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Section: Discussioncontrasting

confidence: 66%

Ganoderma zonatum Is the Causal Agent of Basal Stem Rot in Oil Palm in Colombia

Castillo¹,

Rodríguez²,

González-Concha³

et al. 2022

JoF

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“…As the important origin of primary infection, residual pathogens on dropped-blossoms and fruits play crucial role in epidemic of litchi downy blight [40]. Our ndings indicated that organic mulching application reduced disease incidence and manipulated the soil microbial community structure, especially the increasing bacterial families such as Burkholderia, Bacillus, and Paenibacillus, which have been proved to possess antagonistic activities and contribute to disease suppressiveness [41][42][43]. Moreover, the frequent occurrence of speci c bene cial fungal species, such as Trichoderma sp.…”

Section: Discussionmentioning

confidence: 90%

Organic Mulching Can Suppress Litchi Downy Blight Through Modification of Soil Microbial Community Structure and Functional Potentials

Xu¹,

Ling²,

Xi³

et al. 2021

Preprint

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Organic mulching is an important management practice in agricultural production to improve soil quality, control crop pests and diseases and increase the biodiversity of soil microecosystem. However, the information about soil microbial diversity and composition in litchi plantation response to organic mulching and its attribution to litchi downy blight severity was limited. This study aimed to investigate the effect of organic mulching on litchi downy blight, and evaluate the biodiversity and antimicrobial potential of soil microbial community of litchi plantation soils under organic mulching. Our results showed that organic mulching could decrease the disease incidence in the litchi plantation. As a result of high-throughput 16S rRNA and ITS rDNA gene illumine sequencing, higher bacterial and fungal community diversity indexes were found in organic mulching soils, the relative abundance of norank f norank o Vicinamibacterales, norank f Vicinamibacteraceae, norank f Xanthobacteraceae, Unclassified c sordariomycetes, Aspergillus and Thermomyces were significant more than that in control soils. Isolation and analysis of antagonistic microorganism showed that 29 antagonistic bacteria strains and 37 antagonistic fungi strains were unique for mulching soils. Thus, we believe that organic mulching has a positive regulatory effect on the litchi downy blight and the soil microbial communities, and so, is more suitable for litchi plantation.

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“…Bukholderia is known as biofilm producer [21] and also known as antifungal bacteria against Ganoderma boninense, a pathogen of oil palm; [22] whereas Pasteuria is soil nematode endophyte [22]. In contrary, Streptomyces was the most dominant genus in the first cluster (16.5 %; Fig.…”

Section: Ecological Function Analysis Of Dominant Culturable Bacteriamentioning

confidence: 99%

The bacterial diversity investigation in oil palm plantation using terminal restriction length polymorphism

Situmorang

Nugroho

Prameswara

et al. 2016

AIP Conference Proceedings

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Abstract. Oil palms ((Elaeis guineensis Jacq.), have been widely cultivated in Sumatera for over two planting generations and occupied lands with various soil characteristics. In order to investigate microbial diversity in various soil characteristics of oil palm plantation, a molecular analysis called Terminal Restriction Length Polymorphism (T-RFLP) was adopted. The aim of this research was to analyze the bacterial diversity within several oil palm plantations in Sumatera. DNA extraction was performed using soil DNA extraction kit and analysis was performed using fragment analysis following T-RFLP techniques. Data analysis was performed using MICA III public database. The result showed that soil samples were grouped into two clusters based on their chemical properties. Both HhaI and HinfI digestions affected the number of culturable bacteria dominancy. HhaI was more suitable for revealing a possible culturable genera and species abundance. Dominant genera were detected in each cluster. Cluster-2, which consisted of peat soils, was dominated by Clostridium, Burkholderia, Catenibacterium and Pasteuria. As the diversity of microbes reveals soil fertility, the result showed that metagenomic approach could be used to predict soil fertility indicator, in order to improve agricultural practices for oil palm cultivation.

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Effect of formulated bioorganic containing Burkholderia GanoEB2 in suppressing Ganoderma disease in oil palm seedlings

Abstract: Ili Nadhrah N., Nulit R., Nurrashyeda R., Idris A.S. (2015): Effect of formulated bioorganic containing Burkholderia GanoEB2 in suppressing Ganoderma disease in oil palm seedlings. Plant Protect. Sci., 51: 80-87.

Cited by 14 publications

References 15 publications

Ganoderma zonatum Is the Causal Agent of Basal Stem Rot in Oil Palm in Colombia

Ganoderma zonatum Is the Causal Agent of Basal Stem Rot in Oil Palm in Colombia

Organic Mulching Can Suppress Litchi Downy Blight Through Modification of Soil Microbial Community Structure and Functional Potentials

The bacterial diversity investigation in oil palm plantation using terminal restriction length polymorphism

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