Effect of Climate Change on Plant Diseases

Nazir, Nargis; Bilal, Sheikh; Bhat, K. M.; Shah, T.; Badri, Z.A.; Bhat, Fayaz Ahmad; Wani, T.A.; Mugal, M.N.; Parveen, Shazia; Dorjey, Stanzin

doi:10.20546/ijcmas.2018.706.030

Cited by 38 publications

(22 citation statements)

References 22 publications

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“…The identification of wild forms with effective resistance genes is an important step in the process of obtaining cultivars adapted to specific environmental conditions, including those resistant to fungal pathogens present in a specific area. It is necessary to constantly search for effective sources of resistance due to the constant climate changes and rapid adaptation of pathogens to new environmental conditions [ 18 , 19 , 20 , 21 ]. Research on the use of wild oat species increasing resistance to fungal diseases has been conducted for many years and allowed one to identify many sources of resistance in diploid, tetraploid and hexaploid species [ 1 ].…”

Section: Introductionmentioning

confidence: 99%

Is Every Wild Species a Rich Source of Disease Resistance? Avena fatua L.—Potential Donor of Resistance to Powdery Mildew

Okoń

Ociepa

Nucia

et al. 2021

Plants

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Identifying effective sources of disease resistance is an important aspect of an effective plant protection strategy. Wild species related to cultivars constitute a rich reservoir of resistance genes. Studies conducted in oat have shown that wild species are donors of resistance genes to crown and stem rust, powdery mildew or fusarium head blight. The aim of the present study was to prove whether A. fatua could be a source of effective resistance genes to powdery mildew. This species is widespread all over the world due to its very good adaptability and can be regarded as a potential source of resistance to fungal diseases, including powdery mildew. The conducted research has shown that A. fatua is a species with a low level of resistance to powdery mildew when compared to other wild species of the genus Avena L. A total of 251 accessions were evaluated, and only 23 were identified as resistant to the individual isolates used in the host-pathogen tests. It follows that resistance to powdery mildew is not common among wild Avena species, and its good environmental adaptation is not associated to resistance to powdery mildew.

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Section: Introductionmentioning

confidence: 99%

Is Every Wild Species a Rich Source of Disease Resistance? Avena fatua L.—Potential Donor of Resistance to Powdery Mildew

Okoń

Ociepa

Nucia

et al. 2021

Plants

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“… e estimated increments are 1.7 °C and 4.8 °C in the Representative Concentration Pathways (RCP) 2.6 and 8.5, respectively, until 2100.  is can impact the occurrence of phytosanitary problems, increasing or decreasing the severity of plant diseases (Nazir et al, 2018).  is occurs because changes in climate can result in changes in the interaction between the components environment, host and pathogen, which make up the disease triangle.…”

Section: Introductionmentioning

confidence: 99%

Impact of Temperature Increase on Powdery Mildew in Melon

Araújo¹,

Angelotti²,

Ribeiro³

2021

R. Ci. Amb.

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The increase in greenhouse gases (GHG) has caused an increase in atmospheric temperature. It is known that temperature is determinant for the occurrence of plant diseases. In this context, the objective of this study was to evaluate the influence of temperature on powdery mildew in detached leaves of different melon cultivars. Nine melon cultivars were used: Araguaia, Awton, Eldorado, Gladial, Gold, Hibix, Natal, Juazeiro and Sancho. Two experiments were carried out with detached leaves in incubators with control of temperature and photoperiod (12/12h). The first experiment was conducted to determine the optimum temperature (15, 20, 25, 30, 35 and 40 °C) for the development of the disease and, from this temperature, increments of 1.7, 2.6, 3.1 and 5 °C, corresponding to the IPCC scenarios, were evaluated. The leaves were inoculated with a suspension of conidia of Oidium sp., placed on trays and kept in incubators. It was found that air temperature influences both the incubation period and severity of the disease. The optimum range for the development of melon mildew was 20-25 °C, and the increase in air temperature reduces the severity of the disease and, from 30 °C, there is no appearance of symptoms. The incubation period of melon powdery mildew increases at temperatures of 15 °C and above 27.6 °C. Melon cultivars show different responses to temperature increases. However, all cultivars were susceptible to powdery mildew, with high severity at temperatures favorable to the development of the pathogen.

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“…Commonly, grey mould is controlled by the application of fungicides (Mahdy et al, 2014;Rasiukeviciute et al, 2019). However, due to the spread of the pathogens from different geographical areas and growing resistance, it is becoming harder to avoid plant disease (Nazir et al, 2018). B. cinerea has high genetic variability, and the use of chemical pesticides leads to the development of new strains of this fungus (Fernandez et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

The Effect of Spice Extracts on Strawberry Pathogen Botrytis Cinerea

Šernaitė¹,

Valiuškaitė²,

Raisukevičiūtė³

et al. 2020

Rural Development 2019

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Botrytis cinerea, the causal agent of strawberry grey mould, has become a severe problem of horticultural farms due to its genetic variability and growing resistance to frequently used fungicides. Plant disease could induce significant losses of yields and plants thus it is necessary to discover and apply novel approaches to control strawberry pathogens. In addition, chemical plant protection products can leave undesirable residues in fruits and the environment. Plant protection should be more friendly to the environment and human than already used chemical measures. One of the alternatives could be plant-based extracts, produced from aromatic and medicinal herbs, spices, fruits. Therefore, the aim of this study was to determine the in vitro effect of cinnamon bark (Cinnamomum cassia L.) and clove bud (Syzygium aromaticum L.) extracts on B. cinerea colony growth. Experiments were carried out at LAMMC Institute of Horticulture, Lithuania. Both extracts were obtained from dried material by extraction with CO2. For in vitro assay, extracts were separately mixed with potato dextrose agar in concentrations from 200 to 1000 μl/l, poured into Petri dishes, then each dish was inoculated with 6 mm diameter B. cinerea disc and incubated at 22±2 o C in the dark for 7 days. The diameter of the pathogen colony was measured 2, 4 and 7 days after inoculation. Concentrations of the extracts, which demonstrated reduced growth of the pathogen, were considered to have an antifungal effect. The results showed that extracts of cinnamon bark and clove bud had a similar antifungal effect on B. cinerea and suppressed the growth of 100% from 600 μl/l concentrations 4 days after inoculation. At 600-1000 μl/l, no growth of the pathogen was detected for both extracts 7 days after inoculation. However, clove bud extract considered to be more effective, as the diameter of B. cinerea colonies was smaller compared to cinnamon bark extract at 200-400 μl/l concentrations. To conclude, spice extracts of cinnamon bark and clove bud demonstrated antifungal effect on B. cinerea in vitro and could possibly be applied for control of strawberry grey mould.

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Effect of Climate Change on Plant Diseases

Cited by 38 publications

References 22 publications

Is Every Wild Species a Rich Source of Disease Resistance? Avena fatua L.—Potential Donor of Resistance to Powdery Mildew

Is Every Wild Species a Rich Source of Disease Resistance? Avena fatua L.—Potential Donor of Resistance to Powdery Mildew

Impact of Temperature Increase on Powdery Mildew in Melon

The Effect of Spice Extracts on Strawberry Pathogen Botrytis Cinerea

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