Biological characteristics and mating type distribution of Phytophthora capsici from China

Du, Yu; Gong, Zhen; Liu, G.-Z.; Chai, G.-X.; Li, C.

doi:10.4238/2014.january.21.7

Cited by 3 publications

(2 citation statements)

References 11 publications

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“…However, the use of the PDA medium is still not able to maintain well in forming zoospores. [14] reported that viability is highly dependent on the quality of the inoculum source before being stored for a certain period 4. Conclusions P. capsici is able to survive in SEA medium for up to 40 days after incubation.…”

Section: Mycelium Viability Of P Capsici After 40 Days Of Storagementioning

confidence: 99%

Comparison of growth, viability, sporulation, and virulence of Phytophthora capsici isolated from black pepper (Piper nigrum L.) on various media.

safitri,

Banna,

Wiyono

2024

IOP Conf. Ser.: Earth Environ. Sci.

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Black pepper (Piper nigrum L.) is an important agricultural crop in Indonesia. However, black pepper production in Indonesia is limited by plant pathogen infection, especially Phytophthora capsici, which causes Foot Rot in pepper plants. This pathogen contributes to a high decline in black pepper productivity. This study aims to determine the proper media composition for P. capsici growth based on the mycelial growth, viability, sporulation, and virulence of P. capsici on pepper leaves. The media used in this study were potato dextrose agar (PDA), martin agar (MA), carrot agar (CA), water agar (WA), corn meal agar (CMA), soil extract agar (SEA), and vegetable 8 (V8). The results showed that CMA media was the most optimal medium for P. capsici growth, as indicated by the size of the mycelium with a diameter of 8.00 cm on the fifth day after inoculation. The viability of mycelium of P. capsici was best found on PDA, CMA, and V8 media. Meanwhile, the optimum sporulation and virulence of P. capsici occurred on SEA media, characterized by zoospore production of 5.42x106/ml and symptom areas on leaves of 18.61 cm2 and 16.69 cm2.

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Section: Mycelium Viability Of P Capsici After 40 Days Of Storagementioning

confidence: 99%

Comparison of growth, viability, sporulation, and virulence of Phytophthora capsici isolated from black pepper (Piper nigrum L.) on various media.

safitri,

Banna,

Wiyono

2024

IOP Conf. Ser.: Earth Environ. Sci.

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“…So far, plant diseases caused by Phytophthora have been reported in more than 135 countries (Scott et al ., 2019; Legeay et al ., 2020). The distribution and/or temporal occurrence of Phytophthora in different countries have been studied according to different parameters such as mating type (Du et al ., 2014), topographic influences (Cardillo et al ., 2018) and climate‐pathogen adaptation (including temperature, moisture, and rainfall) (Ghimire et al ., 2011; Thompson et al ., 2014; Redondo et al ., 2015; Burgess et al ., 2017; Hao et al ., 2018; Redondo et al ., 2018).…”

Section: Introductionmentioning

confidence: 99%

Epigenetic insight into regulatory role of chromatin covalent modifications in lifecycle and virulence of Phytophthora

Rojas-Rojas

Vega-Arreguín

2021

Environ Microbiol Rep

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The Oomycota phylum includes fungi-like filamentous microorganisms classified as plant pathogens. The most destructive genus within oomycetes is Phytophthora, which causes diseases in plants of economic importance in agriculture, forestry and ornamental. Phytophthora species are widespread worldwide and some of them enable adaptation to different hosts and environmental changes. The development of sexual and asexual reproductive structures and the secretion of proteins to control plant immunity are critical for the adaptative lifestyle. However, molecular mechanisms underlying the adaptation of Phytophthora to different hosts and environmental changes are poorly understood. In the last decade, the role of epigenetics has gained attention, and important evidence has demonstrated the potential role of chromatin covalent modifications, such as DNA methylation and histone acetylation/ methylation, in the regulation of gene expression during Phytophthora development and plant infection. Here, we review for the first time the evidence of the potential role of chromatin covalent modifications in the lifecycle of the phytopathogenic genus Phytophthora, including virulence, and host and environment adaptation processes.

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Dual actions of chloroinconazide on pepper blight in Capsicum annuum: disruption of Phytophthora capsici mycelium and activation of CaCNGC9‐mediated SA signaling

Zhu,

Zou,

Liao

et al. 2024

Pest Management Science

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BACKGROUNDPepper blight, caused by Phytophthora capsici, is a devastating disease that seriously threatens pepper production worldwide. With the emergence of resistance in P. capsici against conventional fungicides, there is an urgent need to explore novel alternatives for pepper blight management. This study aims to assess the inhibitory effect of chloroinconazide (CHI), a compound synthesized from tryptophan, against pepper blight, and to explore its potential mechanisms of action.RESULTSThe results demonstrated that CHI effectively targeted P. capsici, disrupting its growth and mycelial structure, which resulted in the release of dissolved intracellular substances. Additionally, CHI significantly inhibited the sporangium formation, zoospores release, and zoospores germination, thereby reducing the re‐infection of P. capsici. In contrast, the commercial pesticide methylaxyl only inhibited mycelial growth and had limited effect on re‐infection, while azoxystrobin inhibited re‐infection but had a weak inhibitory effect on mycelial growth. Furthermore, CHI activated the salicylic acid (SA) signaling pathway‐mediated immune response to inhibit P. capsici infection in pepper, with this activation being contingent upon cyclic nucleotide‐gated ion channel CaCNGC9.CONCLUSIONCHI exhibited potent dual inhibitory effects on P. capsici by disrupting mycelial structure and activating the CaCNGC9‐mediated SA signaling pathway. These dual mechanisms of action suggested that CHI could serve as a promising alternative chemical fungicide for the effective management of pepper blight, offering a new approach to control this devastating disease. Our findings highlighted the potential of CHI as a sustainable and efficient solution to combat the increasing resistance of P. capsici to conventional fungicides, ensuring better crop protection and yield. © 2024 Society of Chemical Industry.

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Biological characteristics and mating type distribution of Phytophthora capsici from China

Cited by 3 publications

References 11 publications

Comparison of growth, viability, sporulation, and virulence of Phytophthora capsici isolated from black pepper (Piper nigrum L.) on various media.

Comparison of growth, viability, sporulation, and virulence of Phytophthora capsici isolated from black pepper (Piper nigrum L.) on various media.

Epigenetic insight into regulatory role of chromatin covalent modifications in lifecycle and virulence of Phytophthora

Dual actions of chloroinconazide on pepper blight in Capsicum annuum: disruption of Phytophthora capsici mycelium and activation of CaCNGC9‐mediated SA signaling

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