Effects of oak powdery mildew (Erysiphe alphitoides [Griffon and Maubl.] U. Braun and S. Takam.) on photosynthesis of pedunculate oak (Quercus robur L.)

Vastag, Erna; Kastori, R.; Orlović, Saša; Bojović, Mirjana; Kesić, Aldina; Pap, László; Stojnic, M Srdjan

doi:10.2298/zmspn1936043v

Cited by 6 publications

(5 citation statements)

References 38 publications

(54 reference statements)

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“…Perhaps the modification of the measurement methodology and its extension to include other parameters, i.e., related to the fast kinetics of chlorophyll, will allow a better understanding of the plant’s response. Moreover, in the future study, we plan to analyse physiological features that can be affected by PM [ 50 , 51 , 52 ].…”

Section: Discussionmentioning

confidence: 99%

Resistance Inducers for the Protection of Pedunculate Oak (Quercus robur L.) Seedlings against Powdery Mildew Erysiphe alphitoides

Turczański

Bełka

Spychalski

et al. 2023

Plants

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Oak powdery mildew caused by Erysiphe alphitoides (Griffon and Maubl.; U. Braun & S. Takam.) is a common disease in European forests. One of the most susceptible species is the pedunculate oak (Quercus robur L.). Presently, a few methods are available to control powdery mildew, e.g., the use of fungicides (e.g., based on citric acid), antagonistic fungi or bacteria, chemical treatments (e.g., sulphur, potassium bicarbonate) or genetic resistance. In our study, we aimed to check the effects of using chitosan derivatives and novel active substances inducing the plants’ natural resistance: benzodiathiadiazole (both in neutral and salt form). 84 pedunculate oak seedlings were subjected to the experiment in three treatment variants (plus positive and negative controls). The plants were treated with active substances and inoculated with E. alphitoides. Although the powdery mildew symptoms appeared in all variants, they were manifested mainly by the mycelium in the form of small spots. The experiment indicated that the highest limitation of powdery mildew mycelium was achieved by applying N-methyl-N-methoxyamide-7-carboxybenzo(1,2,3)thiadiazole (BTHWA). The application of BTHWA reduced disease development by 88.9% when compared to the effects of the other variants.

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Section: Discussionmentioning

confidence: 99%

Resistance Inducers for the Protection of Pedunculate Oak (Quercus robur L.) Seedlings against Powdery Mildew Erysiphe alphitoides

Turczański

Bełka

Spychalski

et al. 2023

Plants

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“…У заражених борошнистою росою листках спостерігаються серйозні порушення у циклі трикарбонових кислот і здатності до перенесення електронів, а також значне зниження вмісту хлорофілу, максимальної фотохімічної ефективності (Fv/Fm), фактичної фотохімічної ефективності фотосистеми II (ФСІІ) і швидкості перенесення електронів (ETR) (Vaštag et al, 2019).…”

Section: вступunclassified

“…У кінетиці індукційних переходів флуоресценції хлорофілу значну роль відіграють світлова і темнова фази фотосинтезу. Для оцінки стану фотосинтетичного апарату використовують комплекс параметрів, серед яких Fo, Fm, Fv, Fv/Fо, Fv/Fm, (Fm-Fst)/Fst, (Fp-Fо)/Fv є одними з ключових (Sancho-Knapik et al, 2018;Vaštag et al, 2019;Zhang et al, 2020).…”

Section: результати та їх обговоренняunclassified

The influence of powdery mildew (Sawadaea bicornis (Wallr.) Miyabe) on chlorophyll fluorescence in Norway maple (Acer platanoides L.) seedlings

Alexeyeva,

Holoborodko,

Holodok

2023

ean

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The article presents the results of research on impact of Sawadaea bicornis (Wallr.) Miyabe on the state of photosynthetic apparatus in Acer platanoides L. seedlings using a technique of chlorophyll fluorescence induction (ChlF) measurement, which at the present time can be implemented through the use of biosensors. The research was conducted in September 2022 in the territory of the Botanical Garden of Oles Honchar Dnipro National University. To diagnose a violation of the native chlorophyll photosynthesis in fresh leaves of A. platanoides, a portable fluorometer “Floratest” was used (selected spectral range for fluorescence intensity measurement was 670–800 nm). The research was carried out on fresh leaves of Norway maple seedlings both not unaffected and affected with powdery mildew. Analysis of the data obtained indicates a high sensitivity of the parameters of chlorophyll fluorescence induction to damage by the disease regardless of environmental conditions of local growth of A. platanoides seedlings. The high informativeness of induction changes in chlorophyll fluorescence in the structural organization of chloroplasts in Norway maple leaves determined by the parameters Fo, Fm, Fv, Fv/Fо, Fv/Fm, (Fm–Fst)/Fst, (Fp–Fо)/Fv was revealed. This study demonstrated the effectiveness of using the studied chlorophyll fluorescence parameters to detect severe stress in Norway maple seedlings caused by powdery mildew exposure when the fungus affects more than 50% of the leaf blade area. It is further necessary to conduct dynamic studies throughout the growing season to determine the effectiveness of using these parameters to detect mild stress in the early stages of infection. Therefore, our research showed that the method of induction of chlorophyll fluorescence using the “Floratest” device allows you to quickly determine the general condition of the plant by evaluating photosynthesis, which is the main life process. Analysis of chlorophyll fluorescence parameters is a powerful and effective tool for determining the effect of a parasitic fungus on a plant.

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“…This group of pathogens is characterized by a development within a large climatic amplitude (proof of the huge area in which the disease manifests itself, from the Mediterranean basin to Scandinavia), but certain particularities of the local climate, which coincide with the appearance of favorable periods can explain the galloping evolutions of island disease within this widespread area (Tăut, 2001, Vaštag, 2019.…”

Section: Introductionmentioning

confidence: 99%

The Effectiveness of Phytosanitary Treatments in the Control of Oak Mildew, in the Current Climate Context

TĂUT,

MOLDOVAN,

ȘIMONCA

et al. 2023

BUASVMCN-HORT

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In the technical process of afforestation, most of the compositions require the act of founding the new forest artificially produced seedlings. In some situations, obtaining them is a difficult process due to the complex diseases and pests that can cause significant losses in nurseries. Climatic factors influencing the health of crops in nurseries are: air temperature, amount of precipitation, atmospheric humidity, potential evapotranspiration. The data were recorded with the help of the CEM DT 172 device, with the help of which data regarding temperature and humidity were recorded within the Beclean and Valea Iușului Nurseries. It was observed that the experiments related to the control of the pathogen Oidium alphitoides, using Proquinazid 200gr/l were placed in three cultures, one one-year-olds and two two-year-old, the amount of solution being the same in each variant, differing only the concentration and effectiveness was performed on four degrees of attack. The situation was positively reflected at the time of determining the effectiveness, when, except for the control variant, in all the treated variants most seedlings were weakly or moderately attacked.

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Effects of oak powdery mildew (Erysiphe alphitoides [Griffon and Maubl.] U. Braun and S. Takam.) on photosynthesis of pedunculate oak (Quercus robur L.)

Abstract: S a š a S . O R L O V I Ć 2 , M i r j a n a M . B O J O V I Ć 3 , L a z a r A . K E S I Ć 2 , P r e d r a g L . P A P 2 , S r đ a n

Cited by 6 publications

References 38 publications

Resistance Inducers for the Protection of Pedunculate Oak (Quercus robur L.) Seedlings against Powdery Mildew Erysiphe alphitoides

Resistance Inducers for the Protection of Pedunculate Oak (Quercus robur L.) Seedlings against Powdery Mildew Erysiphe alphitoides

The influence of powdery mildew (Sawadaea bicornis (Wallr.) Miyabe) on chlorophyll fluorescence in Norway maple (Acer platanoides L.) seedlings

The Effectiveness of Phytosanitary Treatments in the Control of Oak Mildew, in the Current Climate Context

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