Fungal pathogens associated with branch and trunk cankers of nut crops in Iran

Sohrabi, Mahboobeh; Mohammadi, Hamid; León, Maela; Armengol, Josep; Banihashemi, Z.

doi:10.1007/s10658-020-01996-w

Cited by 41 publications

(19 citation statements)

References 116 publications

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“…The three fungal species tested in the present study belong to the Botryosphaeriaceae family, a group of polyphagous ascomycetous taxa associated not only with grapevine diseases, but also pathogenic on a vast range of woody plants, specially forestry species [58], stone and pome fruits (i.e., almond, peach, apple, apricot, etc.) [59], and even on woody crops of recent implantation and extension in Spain such as pistachio [60,61]. Furthermore, D. seriata and B. dothidea have been cited as phytopathogens on apple [62], while N. parvum causes avocado dieback [63], B. dothidea causes Botryosphaeria blights and cankers on olive trees [64], and as mentioned, the three of them are commonly related to branch cankers on almond trees [54].…”

Section: Significance Of the Reported Findingsmentioning

confidence: 99%

On the Applicability of Chitosan Oligomers-Amino Acid Conjugate Complexes as Eco-Friendly Fungicides against Grapevine Trunk Pathogens

et al. 2021

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In a context in which the incidence and severity of grapevine fungal diseases is increasing as a result of both climate change and modern management culture practices, reducing the excessive use of phytosanitary products in viticulture represents a major challenge. Specifically, grapevine trunk diseases (GTDs), caused by several complexes of wood decay or xylem-inhabiting fungi, pose a major challenge to vineyard sustainability. In this study, the efficacy of chitosan oligomers (COS)–amino acid conjugate complexes against three fungal species belonging to the Botryosphaeriaceae family (Neofusicoccum parvum, Diplodia seriata, and Botryosphaeria dothidea) was investigated both in vitro and in planta. In vitro tests led to EC50 and EC90 effective concentrations in the 254.6−448.5 and 672.1−1498.5 µg·mL−1 range, respectively, depending on the amino acid involved in the conjugate complex (viz. cysteine, glycine, proline or tyrosine) and on the pathogen assayed. A synergistic effect between COS and the amino acids was observed against D. seriata and B. dothidea (synergy factors of up to 2.5 and 2.8, respectively, according to Wadley’s method). The formulations based on COS and on the conjugate complex that showed the best inhibition rates, COS−tyrosine, were further investigated in a greenhouse trial on grafted vines of two varieties (”Tempranillo” on 775P and “Garnacha” on 110R rootstock), artificially inoculated with the mentioned three Botryosphaeriaceae species. The in planta bioassay revealed that the chosen formulations induced a significant decrease in disease severity against N. parvum and B. dothidea. In summary, the reported conjugate complexes may be promising enough to be worthy of additional examination in larger field trials.

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Section: Significance Of the Reported Findingsmentioning

confidence: 99%

On the Applicability of Chitosan Oligomers-Amino Acid Conjugate Complexes as Eco-Friendly Fungicides against Grapevine Trunk Pathogens

et al. 2021

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“…Indeed, these pathogens colonize and occlude the plant vascular system, thus disrupting water transport to infected trunks, shoots and branches, eventually leading in the death of the whole tree or even orchard failure 5 . It was stated that the greater importance should be attached to fungal trunk pathogens in Iran 6 .…”

Section: Introductionmentioning

confidence: 99%

Fungal canker agents in apple production hubs of Iran

Nourian

Salehi

Safaie

et al. 2021

Sci Rep

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To identify apple canker casual agents and evaluate their pathogenicity and virulence in apple production hubs including West Azarbaijan, Isfahan and Tehran provinces; samples were collected from symptomatic apple trees. Pathogenic isolates on the detached branches were identified as Cytospora cincta, Diplodia bulgarica, Neoscytalidium dimidiatum and Eutypa cf. lata. E. cf. lata was reported as a potential apple canker causal agent in Iran for the first time based on the pathogenicity test on the detached branches, whereas it caused no canker symptoms in apple trees until 6 months after inoculation. Currently, E. cf. lata seems to be adapted to a single city. C. cincta, D. bulgarica and N. dimidiatum caused canker symptoms in apple trees. “C. cincta” and also “C. cincta and N. dimidiatum” were the most widespread and aggressive apple canker species, respectively, associated with apple canker in Iran. Therefore, they are considered to be the main threat to apple production in Iran and should be carefully monitored. Disease progress curve, area under the disease progress curve and optimum temperatures were determined for mentioned species. It is concluded that the establishment of each species occurs in appropriate areas and times in terms of the optimum temperature for their growth.

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“…Moreover, P. minimum has been reported from a wide range of woody hosts and cause damages on several economically important crops such as Prunus sp., Malus sp., Punica granatum, Salix sp., almond, pistachio and walnut and Citrus spp. (Kazemzadeh Chakusary et al 2017;Spies et al 2018;Espargham et al 2020;Sohrabi et al 2020).…”

Section: Discussionmentioning

confidence: 99%

Cadophora sabaouaesp. nov. andPhaeoacremoniumSpecies Associated with Petri Disease on Grapevine Propagation Material and Young Grapevines in Algeria

et al. 2021

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A field survey conducted on asymptomatic grapevine propagation material from nurseries and symptomatic young grapevines throughout different regions of Algeria yielded a collection of 70 Phaeoacremonium-like isolates and three Cadophora-like isolates. Based on morphology and DNA sequence data of β-tubulin (tub2) and actin (act), five Phaeoacremonium species were identified including Phaeoacremonium minimum (22 isolates), P. venezuelense (19 isolates), P. parasiticum (17 isolates), P. australiense (8 isolates) and P. iranianum (4 isolates). The latter two species (P. australiense and P. iranianum) were reported for the first time in Algeria. Multi-locus phylogenetic analyses (ITS, tub2, tef1) and morphological features, allowed the description of the three isolates belonging to the genus Cadophora (WAMC34, WAMC117 and WAMC118) as a novel species, named Cadophora sabaouae sp. nov. Pathogenicity tests were conducted on grapevine cuttings cv. Cardinal. All the identified species were pathogenic on grapevine cuttings.

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Fungal pathogens associated with branch and trunk cankers of nut crops in Iran

Cited by 41 publications

References 116 publications

On the Applicability of Chitosan Oligomers-Amino Acid Conjugate Complexes as Eco-Friendly Fungicides against Grapevine Trunk Pathogens

On the Applicability of Chitosan Oligomers-Amino Acid Conjugate Complexes as Eco-Friendly Fungicides against Grapevine Trunk Pathogens

Fungal canker agents in apple production hubs of Iran

Cadophora sabaouaesp. nov. andPhaeoacremoniumSpecies Associated with Petri Disease on Grapevine Propagation Material and Young Grapevines in Algeria

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