Efficacy of chemical and biological agents against pepper blight (Phytophthora capsici Leonion) in East Asia: a meta-analysis of laboratory and field trial data

Wan, Justin S. H.; Liew, E. C. Y.

doi:10.1007/s42161-020-00519-0

Cited by 11 publications

(6 citation statements)

References 29 publications

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“…The management of diseases caused by P. capsici is expensive and difficult (Granke et al, 2012a). Chemical control still plays a prominent role in controlling crop pests in spite of its innumerable problems such as changes in physical-chemical properties of soils, accumulation of toxic compounds in fruits and fungicide resistance on pathogen populations (Dunn et al, 2010;Hung-Wan & Liew, 2020). This is why the combined application of control methods, such as genetic, physical, cultural, biological and chemical (use of fungicides / oomiceticides of synthetic origin) from an integrated management approach constitutes the best option to reduce economic losses in any crop, besides being more environmental friendly (Majid et al, 2016).…”

Section: Resumo Phytophthora Capsici: As Doenças Que Causa E Estratég...mentioning

confidence: 99%

Phytophthora capsici: the diseases it causes and management strategies to produce healthier vegetable crops

et al. 2022

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Vegetable crops are exposed to constant infection by numerous diseases, including those caused by the oomycete Phytophthora capsici. This microorganism is a polyphagous plant pathogen, capable of infecting dozens of plant species, including cultivated plants and weeds. The aim of this review is to address topics related to etiology and symptoms of the diseases caused by this oomycete (leaf blight, root rot, crown rot and fruit rot), as well as the integration and application of different control alternatives, such as genetics, cultural, physical, biological, and chemical. Crops such as sweet pepper (Capsicum annuum), chili pepper (Capsicum spp.), tomato (Solanum lycopersicum), eggplant (S. melongena), cucurbits (Cucumis sativus, Cucurbita spp.), among others, are subject to considerable economic losses induced by this pathogen. High soil humidity, high temperatures, resistance structures of the pathogen (oospores), scarce availability of resistant cultivars and a reduced range of effective fungicides are conditions that difficult the management of diseases caused by P. capsici in the field. Despite the irrefutable importance of this pathogen, the existing information regarding its integrated management is limited. Therefore, a successful management will depend to a great extent on its knowledge and its control. Thus, the joint application of different control strategies seeks to maintain the pathogen at low population levels and also keeping the epidemics under the threshold of economic loss. At the end, an integrated pest management approach for P. capsici could result in higher economic returns, long-term sustainable harvests, reduction of the environment impact and better quality products for consumers.

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Section: Resumo Phytophthora Capsici: As Doenças Que Causa E Estratég...mentioning

confidence: 99%

Phytophthora capsici: the diseases it causes and management strategies to produce healthier vegetable crops

et al. 2022

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“…In the case of root rot, the infection begins in the fibrous root system, progresses towards the main root, eventually reaches the collar or base of the bush 13 . Management of Phytophthora blight involves a combination of cultural practices, chemical control, biological control, and the use of resistant plant varieties 14 . However, the effectiveness of these measures may vary, and studies in this regard are still very naïve.…”

Section: Introductionmentioning

confidence: 99%

Validation of reference gene stability for normalization of RT-qPCR in Phytophthora capsici Leonian during its interaction with Piper nigrum L.

Vijayakumar,

Sakuntala

2024

Sci Rep

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The selection of stable reference genes for the normalization of reverse transcription quantitative real-time PCR (RT-qPCR) is generally overlooked despite being the crucial element in determining the accuracy of the relative expression of genes. In the present study, the stability of seven candidate reference genes: actin (act), α-tubulin (atub), β-tubulin (btub), translation elongation factor 1-α (ef1), elongation factor 2 (ef2), ubiquitin-conjugating enzyme (ubc) and 40S ribosomal protein S3A (ws21) in Phytophthora capsici has been validated. The validation was performed at six infection time points during its interaction with its susceptible host Piper nigrum, two developmental stages, and for the combined dataset. Four algorithms: geNorm, NormFinder, BestKeeper, and the ΔCt method were compared, and a comprehensive ranking order was produced using RefFinder. The overall analysis revealed that ef1, ws21, and ubc were identified as the three most stable genes in the combined dataset, ef1, ws21, and act were the most stable at the infection stages, and, ef1, btub, and ubc were most stable during the developmental stages. These findings were further corroborated by validating the P. capsici pathogenesis gene NPP1 expression. The findings are significant as this is the first study addressing the stability of reference genes for P. capsici–P. nigrum interaction studies.

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“…P. capsici is a typical soil-borne pathogen infecting various tissues/organs of pepper plants [17]. Under adverse conditions, P. capsici results in secondary diseases in pepper at the later stage of growth, enhancing crop management cost and reducing the economic benefits [18]. During evolution, pepper plants have evolved certain defense mechanisms, such as the accumulation of antioxidant enzymes [19].…”

Section: Introductionmentioning

confidence: 99%

Assessment of soil property in the Guyuan region from Ningxia Province of China and prediction of pepper blight

Hou,

Ma,

Wang

et al. 2023

PLoS ONE

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Soil quality is an important determinant of soil-use efficiency in the Loess Plateau. However, there is no in-depth study on the soil quality of the Loess Plateau. The present study compared the quality of the 0–20 cm soil layer (T0-20) and the 20–40 cm soil layer (T20-40) from the Guyuan region located in the Loess Plateau. The analysis revealed that T0-20 had a higher content of total N, total P, available P, and organic matter, and the activities of microbial enzymes, especially β-grape-glycosidase (β-GC) and sucrase (SC), than T20-40, indicating that soil quality in T0-20 was better than T20-40. Amplicon sequencing found that Pseudombrophila from Ascomycota was the most abundant microbial species and significantly differed between T0-20 (34.2%) and T20-40 (48.7%). This species and another 19 microbial species, such as Ceratobasidiaceae and Mortierellaceae, determined the diversity of soil microorganism. Further analysis of the phenotype and other parameters of pepper seedlings subjected to P. capsici infection isolated from test soil revealed that decreased organic matter content in deep soil layer is related to happening of pepper blight, and 3 h after infection was the critical time point for infection. The peroxidase (POD) activity increased after P. capsici infection and was positively correlated with infection time, suggesting this enzyme may be an indicator of pepper blight occurrence. These findings provide a theoretical foundation for planning pepper blight management and crop cultivation strategies in the Guyuan region.

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Efficacy of chemical and biological agents against pepper blight (Phytophthora capsici Leonion) in East Asia: a meta-analysis of laboratory and field trial data

Cited by 11 publications

References 29 publications

Phytophthora capsici: the diseases it causes and management strategies to produce healthier vegetable crops

Phytophthora capsici: the diseases it causes and management strategies to produce healthier vegetable crops

Validation of reference gene stability for normalization of RT-qPCR in Phytophthora capsici Leonian during its interaction with Piper nigrum L.

Assessment of soil property in the Guyuan region from Ningxia Province of China and prediction of pepper blight

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