EFFECT OF MICRONUTRIENTS-ENRICHED FERTILIZERS ON BASAL STEM ROT DISEASE INCIDENCE AND SEVERITY ON OIL PALM (&lt;i&gt;ELAEIS GUINEENSIS&lt;/i&gt; JACQ.) SEEDLINGS

Hanafi, Mohamed Musa; Idris, Abu Seman; Kadir, Jugah; Azwa, Jamaludin Nurul Mayziatul; Mohidin, Hasmah; Syed-Omar, S. R.

doi:10.3844/ajassp.2014.1841.1859

Cited by 10 publications

(13 citation statements)

References 32 publications

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“…The color change found in the leaves of the oil palm genotypes indicates the severity of Fusarium wilt disease. This is similar to previous results where disease severity was observed in the leaves of oil palm genotypes treated with a pathogen (Tengoua et al, 2014 ; Ntsomboh et al, 2015 ).…”

Section: Discussionsupporting

confidence: 93%

Molecular Identification of Secreted Effector Genes Involved in African Fusarium oxysporum f.sp. elaeidis Strains Pathogenesis During Screening Nigerian Susceptible and Tolerant Oil Palm (Elaeis guineensis Jacq.) Genotypes

Chidi

Adekunle

Samuel

et al. 2020

Front. Cell. Infect. Microbiol.

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Fusarium wilt is caused by Fusarium oxysporum f. sp. elaeidis , and constitutes a severe threat to the oil palm industry in Africa. This study is aimed at surveying, identifying the secreted effector genes responsible for virulence during pathogenesis, and investigating the level of genetic diversity and cluster resolutions of alleles accountable for virulence in pathogenic strains of F. oxysporum f.sp. elaeidis from African countries. Fifty-eight fungal strains were isolated from acute and chronic Fusarium wilt diseased oil palms in Nigeria, Ghana and Cameroon. Morphological and sequencing analysis of the Internal Transcribed Spacer (ITS) region grouped all strains into nine dominant strains with a majority (41.37%) belonging to F. oxysporum , followed by F. solani (20.68%), F. equiseti (20.68%), F. verticilliodes (5.17%), F. proliferatum (3.44%), F. chlamydosporum (3.44%), F. nelsonii (1.72%), Fomes fomentarius , and Penicillium simplicissimum (1.72%). Disease incidence and severity showed varying levels of virulence with some Fusarium strains causing severe symptoms while others exhibited slight symptoms. ISSR evaluation disclosed a considerable level of genetic diversity among pathogenic F. oxysporum f.sp. elaeidis strains. Molecular characterization using defense gene primers revealed that the oil palm genotypes screened did not amplify defense genes. During pathogenesis, Fusarium strains produced GMC oxidoreductases, hypothetical proteins, FOIG 16629, FOXG 14258 , and Pyranose dehydrogenase 3-like proteins using virulent effector gene primers. Polymerase Chain Reaction analysis using specific gene primers revealed that PRK02106, beta and BetA effector genes were secreted explicitly by F. oxysporum f.sp. elaeidis (4) and F. oxysporum f.sp. elaeidis (CRT) strains while screening tolerant oil palm genotypes. During screening susceptible oil palm genotypes, F. oxysporum f.sp. elaeidis (4) and F. oxysporum f.sp. elaeidis (CRT) strains produced FGGY_L-XK1, PRK10939, FGGY_N1, XylB1, XylB2, FGGY_L-XK2, XylB3, FGGY_N2 , and XylB4 effector genes. Identifying these effector genes will provide the platform to study the basis of pathogenesis which will help breeders to modify breeding techniques for the improvement of oil palm genotypes in order to reduce oil palm loss in plantations and enhance food security.

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Section: Discussionsupporting

confidence: 93%

Molecular Identification of Secreted Effector Genes Involved in African Fusarium oxysporum f.sp. elaeidis Strains Pathogenesis During Screening Nigerian Susceptible and Tolerant Oil Palm (Elaeis guineensis Jacq.) Genotypes

Chidi

Adekunle

Samuel

et al. 2020

Front. Cell. Infect. Microbiol.

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“…This statistical test confirmed that dazomet (T4) and hexaconazole T5) treatments had contributed to significant toxicity toward seedling growth, while the rest of the treatments were insignificant, as there was no seedling death. 29 The typical dead and alive oil palm seedlings were divided in two categories, as shown in Figures 7 and 8.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

Synthesis of Dazomet-Zinc/Aluminum-Layered Double Hydroxide Nanocomposite and Its Phytotoxicity Effect on Oil Palm Seed Growth

Mustafa

Hussein

Seman

et al. 2018

ACS Sustainable Chem. Eng.

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A fungicide nanodelivery system has been synthesized by the intercalation of dazomet into the interlayer galleries of the zinc/aluminum-layered double hydroxide (Zn/Al-LDH) using the ion-exchanged method. A basal spacing expansion from 8.9 Å in the layered double hydroxide (LDH) to 29.7 Å in the nanocomposite was observed. A Fourier transform infrared (FTIR) study has shown that the absorption bands of the resulting nanocomposite has both dazomet and Zn/Al-LDH characteristics, which confirmed the intercalation of dazomet into the Zn/Al-LDH interlayers with enhanced thermal stability of the guest, dazomet. Further studies on oil palm seedlings were also conducted on the dazomet-intercalated Zn/Al-LDH (DZALDH) and compared with the hexazonazole-intercalated Zn/Al-LDH (HZALDH). Both of them have shown positive effects on oil palm seed growth. This work has shown that the resulting agronanochemicals have a dual-modal fungicide nanodelivery system as a fungicide and a micronutrient supplier to support early plant growth and has the potential to avoid direct contact of fungicides with users due to the intercalation process.

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“…In Silene paradoxa, Cu was reported to influence root lignification, vessel differentiation, and mucilage production [61,62]. In another similar study conducted on oil palm seedlings, single and combined application of copper, boron, and manganese showed no significant difference in host lignification, BSR incidence, and severity [63,64]. Although the relationship between elemental nutrients and lignin content have been reported to vary tremendously between and within plant species, our findings showed consistent agreement between Fe, Si, Ti, S, and Cu depositions and root lignin content accumulation.…”

Section: Discussionmentioning

confidence: 99%

Root Lignin Composition and Content in Oil Palm (Elaeis guineensis Jacq.) Genotypes with Different Defense Responses to Ganoderma boninense

2020

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Basal stem rot of oil palms (OPs) is caused by Ganoderma boninense, a white-rot fungus. Root tissues are the primary route for G. boninense penetration and subsequent pathogenesis on OPs. Little is known on the host lignin biochemistry and selectivity for G. boninense degradation. Oil palm genotypes with different defense responses to G. boninense (highly tolerant, intermediately tolerant, and susceptible) were assessed for root lignin biochemistry (lignin content and composition), plant functional traits (height, fresh weight, girth), chlorophyll content, and root elemental nutrient content. One-year-old seedlings and five-year-old trees were screened for root thioglycolic acid lignin (TGA) content, lignin composition, and elemental nutrient depositions, while plant functional traits were evaluated in the one-year-old seedlings only. The TGA lignin in all the oil palm seedlings and trees ranged from 6.37 to 23.72 pM µg−1, whereas the nitrobenzene oxidation products showed a syringyl (S)-to-guaiacyl (G) ratios of 0.18–0.48. Tolerant genotypes showed significantly lower lignin content compared to the intermediately tolerant and susceptible genotypes. Likewise, the S/G ratio was higher in genotypes with lower lignin content. The depositions of root Fe, Si, Ti, S, and Cu were significantly different among the oil palm genotypes with the susceptible genotypes showing greater content than the tolerant genotypes.

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EFFECT OF MICRONUTRIENTS-ENRICHED FERTILIZERS ON BASAL STEM ROT DISEASE INCIDENCE AND SEVERITY ON OIL PALM (<i>ELAEIS GUINEENSIS</i> JACQ.) SEEDLINGS

Cited by 10 publications

References 32 publications

Molecular Identification of Secreted Effector Genes Involved in African Fusarium oxysporum f.sp. elaeidis Strains Pathogenesis During Screening Nigerian Susceptible and Tolerant Oil Palm (Elaeis guineensis Jacq.) Genotypes

Molecular Identification of Secreted Effector Genes Involved in African Fusarium oxysporum f.sp. elaeidis Strains Pathogenesis During Screening Nigerian Susceptible and Tolerant Oil Palm (Elaeis guineensis Jacq.) Genotypes

Synthesis of Dazomet-Zinc/Aluminum-Layered Double Hydroxide Nanocomposite and Its Phytotoxicity Effect on Oil Palm Seed Growth

Root Lignin Composition and Content in Oil Palm (Elaeis guineensis Jacq.) Genotypes with Different Defense Responses to Ganoderma boninense

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