Phytophthora palmivora: A New Pathogen of Olive Trees in Morocco

Chliyeh, Mohamed; Touhami, Amina Ouazzani; Filali-Maltouf, Abdelkarim; Modafar, Cherkaoui El; Moukhli, Abdelmajid; Oukabli, Ahmed; Benkirane, Rachid; Douira, Allal Douira Allal

doi:10.5147/ajb.2013.0085

Cited by 8 publications

(7 citation statements)

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“…The pathogen is also responsible for various other diseases of cassava (Manihot esculenta Crantz) (Sankar et al 2013), macadamia (Macadamia integrifolia) (Aragaki and Uchida 1980), papaya (Carica papaya) (Zentmyer 1988), pineapple (Ananas comosus), betel vine (Piper betle) (Maiti and Sen 1979;Turner 1969b), olive (Olea spp.) (Chliyeh et al 2013), orchid (Uchida and Aragaki 1991), cherry (Prunus avium L.) (Türkölmez et al 2015) and several palms species including coconut (Blaha et al 1994;Ordoñez et al 2016) and ornamental palm Washingonia robusta (Elliott 2006;Garofalo and McMillan 1999). The pathogen is responsible for the bud rot and premature nutfall diseases of the coconut (Cocos nucifera) in the Philippines (Concibido-Manohar 2004), Indonesia (Smith and Flood 2001) and India (Sharadraj and Mohanan 2014).…”

Section: Introductionmentioning

confidence: 99%

Molecular characterization of Phytophthora palmivora responsible for bud rot disease of oil palm in Colombia

Maizatul-Suriza

Dickinson

Idris

2019

World J Microbiol Biotechnol

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Bud rot disease is a damaging disease of oil palm in Colombia. The pathogen responsible for this disease is a species of oomyctes, Phytophthora palmivora which is also the causal pathogen of several tropical crop diseases such as fruit rot and stem canker of cocoa, rubber, durian and jackfruit. No outbreaks of bud rot have been reported in oil palm in Malaysia or other Southeast Asian countries, despite this particular species being present in the region. Analysis of the genomic sequences of several genetic markers; the internal transcribe spacer regions (ITS) of the ribosomal RNA gene cluster, beta-tubulin gene, translation elongation factor 1 alpha gene (EF-1α), cytochrome c oxidase subunit I & II (COXI and COXII) gene cluster along with amplified fragment length polymorphism (AFLP) analyses have been carried out to investigate the genetic diversity and variation of P. palmivora isolates from around the world and from different hosts in comparison to Colombian oil palm isolates, as one of the steps in understanding why this species of oomycetes causes devastating damage to oil palm in Latin America but not in other regions. Phylogenetic analyses of these regions showed that the Colombian oil palm isolates were not separated from Malaysian isolates. AFLP analysis and a new marker PPHPAV, targeting an unclassified hypothetical protein, was found to be able to differentiate Malaysian and Colombian isolates and showed a clear clade separations. Despite this, pathogenicity studies did not show any significant differences in the level of aggressiveness of different isolates against oil palm in glasshouse tests.

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Section: Introductionmentioning

confidence: 99%

Molecular characterization of Phytophthora palmivora responsible for bud rot disease of oil palm in Colombia

Maizatul-Suriza

Dickinson

Idris

2019

World J Microbiol Biotechnol

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“…Pathogenicity of Verticillium dahliae has been studied on different olive varieties [2] as well as its distribution in the olive-growing areas of Morocco [3,4,5]. Phytophthora palmivora was encountered for the first time in Morocco [6]. Its distribution has also been confirmed in different olive-growing regions of Morocco [7,8].…”

Section: Introductionmentioning

confidence: 99%

Detection of Fusarium solani as a Pathogen Causing Root Rot and Wilt Diseases of Young Olive Trees in Morocco

Chliyeh¹,

Msairi²,

Touhami³

et al. 2017

ARRB

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The cultivation of the olive tree has several problems related to pests and diseases that can cause heavy economic losses by causing the death of trees. Fusarium solani was detected in the olive trees of Sidi Taibi's nurseries located in the national road between Kénitra and Rabat in spring 2012 and 2013 (1 to 2% of diseased plants). Koch's postulate was verified in the olive trees variety 'Picholine Moraine', inoculated with F. solani. Three months after inoculation of the plants, the extremities of the young buds began to dry out, then the drying became generalized and the roots of the inoculated plants showed rot and detached from the base of the plants. The pathogen was re-isolated from the roots, dried buds, bark and petioles of the leaves of the inoculated plants; the percentage of isolation was 100%.

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“…One of the main reasons is that olive cultivation in Morocco has traditionally been based on planting a single cultivar so-called “Picholine Marocaine” (occupying almost 90% of the total Moroccan olive cultivated area) [ 7 ]. This autochthonous cultivar shows good adaptability to a wide range of Moroccan pedoclimatic conditions, and exhibits interesting agronomic traits, oil quality, and composition characteristics [ 8 ]; however it presents some limitations, such as an accentuated alternate bearing [ 6 ] and susceptibility to the main olive fungal diseases, particularly those caused by Spilocaea oleagina , Verticillium dahliae and Fusarium solani [ 9 ]. Moreover, extensive research supports the high phenotypic and genetic variability of this cultivar in different Moroccan olive growing regions (almost in the same orchard), suggesting that the name of “Picholine Marocaine” encompass a pool of various local genotypes [ 10 , 11 ].…”

Section: Introductionmentioning

confidence: 99%

In-Depth Two-Year Study of Phenolic Profile Variability among Olive Oils from Autochthonous and Mediterranean Varieties in Morocco, as Revealed by a LC-MS Chemometric Profiling Approach

Bajoub

Medina‐Rodríguez

Olmo-García

et al. 2016

IJMS

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Olive oil phenolic fraction considerably contributes to the sensory quality and nutritional value of this foodstuff. Herein, the phenolic fraction of 203 olive oil samples extracted from fruits of four autochthonous Moroccan cultivars (“Picholine Marocaine”, “Dahbia”, “Haouzia” and “Menara”), and nine Mediterranean varieties recently introduced in Morocco (“Arbequina”, “Arbosana”, “Cornicabra”, “Frantoio”, “Hojiblanca”, “Koroneiki”, “Manzanilla”, “Picholine de Languedoc” and “Picual”), were explored over two consecutive crop seasons (2012/2013 and 2013/2014) by using liquid chromatography-mass spectrometry. A total of 32 phenolic compounds (and quinic acid), belonging to five chemical classes (secoiridoids, simple phenols, flavonoids, lignans and phenolic acids) were identified and quantified. Phenolic profiling revealed that the determined phenolic compounds showed variety-dependent levels, being, at the same time, significantly affected by the crop season. Moreover, based on the obtained phenolic composition and chemometric linear discriminant analysis, statistical models were obtained allowing a very satisfactory classification and prediction of the varietal origin of the studied oils.

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Phytophthora palmivora: A New Pathogen of Olive Trees in Morocco

Cited by 8 publications

References 0 publications

Molecular characterization of Phytophthora palmivora responsible for bud rot disease of oil palm in Colombia

Molecular characterization of Phytophthora palmivora responsible for bud rot disease of oil palm in Colombia

Detection of Fusarium solani as a Pathogen Causing Root Rot and Wilt Diseases of Young Olive Trees in Morocco

In-Depth Two-Year Study of Phenolic Profile Variability among Olive Oils from Autochthonous and Mediterranean Varieties in Morocco, as Revealed by a LC-MS Chemometric Profiling Approach

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