Have a personal or library account? Click to login
First report of Apiognomonia errabunda on Quercus ilex in Algeria Cover

First report of Apiognomonia errabunda on Quercus ilex in Algeria

Open Access
|Mar 2021

Figures & Tables

Figure 1

Map depicting the study sites situated in Belezma National Park: BRG: Bordjem, TUG: Tougurt, CHL: Chelaâlaâ, AAL: Ain Ali
Map depicting the study sites situated in Belezma National Park: BRG: Bordjem, TUG: Tougurt, CHL: Chelaâlaâ, AAL: Ain Ali

Figure 2

Leaves of Q. ilex showing characteristic brown-necrosis caused by D. quercina
Leaves of Q. ilex showing characteristic brown-necrosis caused by D. quercina

Figure 3

Apiognomonia errabunda cultures on MEA medium. (A) AECS3 isolated from Chelaâlaâ. (B) AETS2 isolated from Tougurt. (C) AEBS5 isolated from Brdjem. (D) AEAN6 isolated from Ain Ali
Apiognomonia errabunda cultures on MEA medium. (A) AECS3 isolated from Chelaâlaâ. (B) AETS2 isolated from Tougurt. (C) AEBS5 isolated from Brdjem. (D) AEAN6 isolated from Ain Ali

Figure 4

Phylogenetic tree (rDNA ITS) of A. errabunda including the two isolates from Q. ilex in Belezma National Park. Dendrogram was elaborated implying the Neighbor-Joining method based on the Jukes-Cantor model. The bootstrap tree inferred from 1000 replicates (The optimal tree with the sum of branch length = 0.62132144). Two accessions of Ophiostoma novo-ulmi were considered in this tree as out-group taxa
Phylogenetic tree (rDNA ITS) of A. errabunda including the two isolates from Q. ilex in Belezma National Park. Dendrogram was elaborated implying the Neighbor-Joining method based on the Jukes-Cantor model. The bootstrap tree inferred from 1000 replicates (The optimal tree with the sum of branch length = 0.62132144). Two accessions of Ophiostoma novo-ulmi were considered in this tree as out-group taxa

Severity (%) variation of Q_ ilex anthracnose according to leaf position on twigs

BordjemTougurtChelaâlaâAin Ali
NAP20.02 ± 0.22b32.93 ± 0.21a21.55 ± 0.23a14.08 ± 0.28a
AP25.43 ± 0.63a36.34 ± 0.22a22.43 ± 0.25a13.07 ± 0.33a
P0.01930.13470.65970.6916

Cultural characteristics of the 35 D_ quercina isolates on MEA medium

SiteIsolatesMorphotypeSporulationAcervuli(Diam mm)CUpsCLwsShapeConidiaL (μm)ConidiaW (μm)
BordjemDQBS1M1S37.00LBLBCircular9.005.00
DQBS2M1S39.33LBLBCircular11.003.00
DQBS3M1S47.00LBLBCircular9.003.00
DQBS4M1S41.67LBLBCircular10.004.00
DQBS5M3S41.00LBLBCircular9.003.00
DQBS6M5S40.00LBLBCircular6.004.00
DQBN1M5NS40.67LBLBCircularn/an/a
TougurtDQTS1M1S45.67LBLBCircular7.003.00
DQTS2M1S43.33BGLGCircular8.003.00
DQTS3M1S41.67BGLGCircular6.003.00
DQTN1M1NS39.67LBLBCircularn/an/a
DQTS4 DQTN2M2 M2S S– –45.33 44.00LB LBLB LBCircular Circular8.00 7.005.00 3.00
DQTS5M2S46.67LBLBCircular8.002.00
DQTN3M3S40.00LBLBCircular8.004.00
DQTN4M3NS41.67LBLBCircularn/an/a
DQTS6M5S47.67LBLBCCCircular9.003.00
ChelaâlaâDQCN1M1NS41.33BGLGCircularn/an/a
DQCS1M3S+43.67LBLBCircular7.004.00
DQCS2 DQCS3M4 M5S S– –43.67 43.33LB BGLB LGCircular Circular9.00 8.003.00 4.00
DQCS4M5S42.67LBLBCircular9.003.00
DQCS5M5S39.00LBLBCircular9.004.00
Ain AliDQAN1M1S33.00LBLBCircular11.003.00
DQAN2M1S42.33LBLBCircular11.004.00
DQAN3M4S+43.33LBLBCircular9.003.00
DQAS1M1S35.33LBLBCircular8.004.00
DQAS2M1S45.67LBLBCCCircular8.003.00
DQAS3 DQAN4M1 M1S NS– –41.00 41.33LB LBLB LBCircular Circular9.00 n/a4.00 n/a
DQAN5M1S+49.67BGLGCircular6.003.00
DQAS4M2S+50.00BGLGCircular7.003.00
DQAN6M2NS46.00LBLBCircularn/an/a
DQAS5M3S40.00LBLBCircular7.003.00
DQAS6M3S50.67LBLBCircular7.004.00

Mean severity (%) calculated for each sites according to digital image analyses of Q_ ilex leaves affected by anthracnose

SitesNumber of sampled treesNumber of sampled leavesSeverity (%)Severity indexHorsfall-Barratt Scale
Bordjem1037421.85 ± 0.18 b0.103.99 ± 0.18
Tougurt1035034.52 ± 0.15a0.134.76 ± 0.15
Chelaâlaâ1039621.96 ± 0.17b0.114.01 ± 0.17
Ain Ali1031913.66 ± 0.22c0.033.03 ± 0.22

Variability of anthracnose severity (%) on leaves of Q_ ilex according to the orientation of twigs

Twig orientationBordjemTougurtChelaâlaâAin Ali
East20.61 ± 0.39ab31.56 ± 0.32b21.51 ± 0.35ab12.63 ± 0.38b
West18.35 ± 0.40b26.80 ± 0.34b17.53 ± 0.38b9.79 ± 0.38b
North20.53 ± 0.34ab26.64 ± 0.34b19.36 ± 0.64b13.87 ± 0.51ab
South25.79 ± 0.31a43.87 ± 0.24a26.08 ± 0.28a21.60 ± 0.48a
P0.0773<0.00010.00750.0093
DOI: https://doi.org/10.2478/ffp-2021-0002 | Journal eISSN: 2199-5907 | Journal ISSN: 0071-6677
Language: English
Page range: 10 - 20
Submitted on: Apr 10, 2019
|
Accepted on: Nov 9, 2020
|
Published on: Mar 13, 2021
In partnership with: Paradigm Publishing Services
Publication frequency: 4 issues per year

© 2021 Oussama Ali Bensaci, Riadh Beghami, Kamel Gouaref, published by Forest Research Institute
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.