Multiple <i>Alternaria</i> species groups are associated with leaf blotch and fruit spot diseases of apple in Australia

Harteveld, D. O. C.; Akinsanmi, Olufemi A.; Drenth, A.

doi:10.1111/j.1365-3059.2012.02637.x

Cited by 66 publications

(38 citation statements)

References 23 publications

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“…Multiple Alternaria species have been implicated to cause leaf blotch and fruit spot of apple in many parts of the world (Filajdic and Sutton 1991;Gur et al 2017;Harteveld et al 2013;Rotondo et al 2012). In Australia, four species groups were found to be associated with these diseases, including the Alternaria arborescens, Alternaria tenuissima/Alternaria mali, Alternaria alternata/A.…”

Section: Discussionmentioning

confidence: 99%

“…In Australia, four species groups were found to be associated with these diseases, including the Alternaria arborescens, Alternaria tenuissima/Alternaria mali, Alternaria alternata/A. tenuissima intermediate and Alternaria longipes species groups (Harteveld et al 2013). Three Alternaria species groups were similarly proposed to cause the diseases in Italy, including A. arborescens, A. alternata and A. tenuissima (Rotondo et al 2012).…”

Section: Discussionmentioning

confidence: 99%

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Identification of Alternaria spp. as causal agent of dead flower buds disease of pear (Pyrus communis) in the Netherlands and methods for disease control

et al. 2019

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The occurrence of dead dormant flower buds is a common phenomenon of economic importance in the major pear production areas of Europe. Thus far, the cause of dead flower buds disease remained unknown. Several causes have been proposed, including insufficient tree chilling, unmet dormancy requirements, incompatibility between scion and cultivar, but also various biotic stress agents such as pathogens and pests. In this study, we tested the relationship between reduction of tree growth and dead flower bud incidences, but found no indication that growth regulation can prevent the occurrence of dead flower buds. It has been proposed that the bacterium Pseudomonas syringae pv. syringae may be the causal agent of dead flower buds of pear. However, although we found the bacterium as epiphyte and even as endophyte on and in flower buds, our findings argue that P. syringae pv. syringae is not the causal agent of dead flower buds disease in the Netherlands. In our research, Alternaria spp. were consistently found in diseased flower buds, and strong correlations between dead dormant flower buds and infection rates of flower buds with Alternaria spp. were recorded. The isolated Alternaria species were identified as A. arborescens SC and A. alternata SC. Field experiments for disease control showed that the disease may be controlled by specific fungicide applications. Thus, we propose that dead flower buds of pear in the Netherlands should be regarded as a fungal disease caused by A. alternata SC and potentially also A. arborescens SC.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Identification of Alternaria spp. as causal agent of dead flower buds disease of pear (Pyrus communis) in the Netherlands and methods for disease control

et al. 2019

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“…mali (syn. Alternaria mali Roberts, or Alternaria alternata apple pathotype) [ 1 , 2 , 3 ], is an important disease of apple in many countries [ 4 , 5 , 6 , 7 , 8 , 9 , 10 ], including Israel [ 11 ]. The disease affects cultivars such as Golden Delicious, Starking Delicious, Gala and Pink Lady [ 5 , 8 , 11 , 12 , 13 ].…”

Section: Introductionmentioning

confidence: 99%

β-Aminobutyric Acid Induced Resistance against Alternaria Fruit Rot in Apple Fruits

Gur

Reuveni

Cohen

2021

JoF

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Fruit body rot and calyx rot caused by Alternaria alternata f. sp. mali is an important disease of apple worldwide. The disease has recently become severe in cv. Pink Lady apple in Israel to an extent that has never been reported elsewhere in the world. No alternative control measures of the disease except fungicides are known. Here, we show for the first time that dl-β-aminobutyric acid (BABA) induces resistance against Alternaria fruit rot (AFR) in apple fruits in the laboratory and in the orchard. AFR was inhibited in fruits treated with BABA of 1000 μg/mL. BABA did not inhibit spore germination or mycelial growth of the pathogen in vitro (up to 2000 μg/mL). It was most inhibitory when applied 4 days prior to inoculation of detached fruits. BABA inhibited AFR also curatively when applied at 24 h post inoculation. Five other isomers of aminobutyric acid failed to protect the fruits from rot formation. Three field trials in commercial apple orchards proved that BABA was as protective against AFR as the commercial standard fungicidal mixture of azoxystrobin and difenoconazole. This research suggests that BABA may serve as a resistance inducer in apple against AFR. It can be used as an adequate alternative to the currently used fungicides or integrated in disease management programs to reduce fungicide load and buildup of fungicide resistance.

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“…Meyve ve sebzeleri enfekte eden funguslardan Alternaria alternata (Fr.) Keissler'in ise, dünyanın pek çok bölgesinde çok çeşitli tarımsal üründe hastalık oluşturduğu belirlenmiştir (Harteveld et al 2013, Kwon et al 2011, Taba et al 2009, Wang et al 2010a, 2010b. Bu etmen, domates meyvesinde ekonomik açıdan en önemli nekrotrofik patojenlerden biri olarak tanımlanmaktadır (Troncoso-Rojas and Tiznado-Hernández 2014).…”

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“…Bu etmen, domates meyvesinde ekonomik açıdan en önemli nekrotrofik patojenlerden biri olarak tanımlanmaktadır (Troncoso-Rojas and Tiznado-Hernández 2014). Meyve dışında bitkilerin diğer kısımlarından tohum (Szopinska et al 2012), yaprak (Harteveld et al 2013) ve gövdeyi (Choi et al 2010) enfekte etmekte, meyveyi doğrudan etkileyerek ya da dolaylı olarak bitki fotosentezinin fizyolojisini bozarak çiçeklenmeyi (Espinoza-Verduzco et al 2012) ve tarımsal üretimi azaltmaktadır (Lagopodi andThanassoulopoulos 1998, Qiang et al 2010). Bu etmenden kaynaklı kayıpları azaltmak amacıyla pestisit uygulaması, dayanıklı çeşit kullanımı ve ekim rotasyonu gibi farklı mücadele yolları uygulanmakta, pestisit uygulaması ise hala en yaygın mücadele yöntemi olmaya devam etmektedir.…”

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Domateste Alternaria alternata (Fr.) Keissl’nın Bazı Bakteriler ile Biyolojik Mücadelesi

Tekiner

Tozlu

Kotan

2019

Bitki Koruma Bülteni

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Multiple Alternaria species groups are associated with leaf blotch and fruit spot diseases of apple in Australia

Cited by 66 publications

References 23 publications

Identification of Alternaria spp. as causal agent of dead flower buds disease of pear (Pyrus communis) in the Netherlands and methods for disease control

Identification of Alternaria spp. as causal agent of dead flower buds disease of pear (Pyrus communis) in the Netherlands and methods for disease control

β-Aminobutyric Acid Induced Resistance against Alternaria Fruit Rot in Apple Fruits

Domateste Alternaria alternata (Fr.) Keissl’nın Bazı Bakteriler ile Biyolojik Mücadelesi

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