Phylogenetic and pathogenic characterization of Mauginiella scaettae as the causal agent of date palm (Phoenix dactylifera L.) inflorescence rot in southeast of Algeria

Messaoud B. Bensaci*, Omrane Toumatia, Noureddine Bouras, Fatma Rahmania, Brian Douglas, Stephen Wade, Gareth W. Griffith, Luis A.J. Mur*

*Awdur cyfatebol y gwaith hwn

Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

56 Wedi eu Llwytho i Lawr (Pure)

Crynodeb

Inflorescence rot is a devastating disease of date palm (Phoenix dactylifera L.) but has not been extensively characterised. Mauginiella scaettae Cav. 1925 (Pleosporales; Ascomycota), causal agent of this disease, was isolated from infected male and female inflorescences of date palm from different oases in the southeast of Algeria: Ouargla (strains OU1, OU2, OU3), Tougourt (strains TO1, TO2), Hadjira (strain HA), Oued (strains OE1, OE2), Ghardaia (strain GA) and Biskra (strain BI). Each strain of M. scaettae was used to infect healthy male inflorescence of date palms to satisfy Koch's postulates but follow on assessments were based on GA. Phylogenetic reconstruction using the rRNA sequence data (ITS and LSU regions) found no intraspecific differentiation of strains and confirmed the placement of M. scaettae within the family Phaeosphaeriaceae. Fourier Transform Infrared spectroscopy (FTIR) metabolite fingerprinting discriminated between fungal strains originating from male and female inflorescences. Scanning electron microscopy (SEM) characterisation of the infection processes for M. scaettae in both male and female inflorescences suggested a preference for stomatal entry. Our characterisation provides new insights into this inflorescence rot to allow better detection and management of the disease.

Iaith wreiddiolSaesneg
Rhif yr erthygl102062
Nifer y tudalennau8
CyfnodolynPhysiological and Molecular Plant Pathology
Cyfrol127
Dyddiad ar-lein cynnar12 Meh 2023
Dynodwyr Gwrthrych Digidol (DOIs)
StatwsCyhoeddwyd - 01 Medi 2023

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Gweld gwybodaeth am bynciau ymchwil 'Phylogenetic and pathogenic characterization of Mauginiella scaettae as the causal agent of date palm (Phoenix dactylifera L.) inflorescence rot in southeast of Algeria'. Gyda’i gilydd, maen nhw’n ffurfio ôl bys unigryw.

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