Biological activity of pterostilbene against Peronophythora litchii, the litchi downy blight pathogen

Xu, Dandan; Deng, Yuewen; Xi, Pinggen; Zhu, Zhihong; Kong, Xiangyu; Wan, Lang; Situ, Junjian; Li, Min-Hui; Gao, Lingwang; Jiang, Zide

doi:10.1016/j.postharvbio.2018.05.011

Cited by 35 publications

(18 citation statements)

References 42 publications

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“…From 2014, the planting area, production and output value of litchi in China have ranked first in the world [ 1 ]. Litchi crops are subject to downy blight during blooming and fruiting stages, which leads to great economic losses [ 2 ]. Peronophythora litchii , the pathogen of litchi downy blight, produces sporangia which can germinate or release zoospores for the infection on the host.…”

Section: Introductionmentioning

confidence: 99%

Organic mulch can suppress litchi downy blight through modification of soil microbial community structure and functional potentials

Ling

Qiao

et al. 2022

BMC Microbiol

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Background Organic mulch is an important management practice in agricultural production to improve soil quality, control crop pests and diseases and increase the biodiversity of soil microecosystem. However, the information about soil microbial diversity and composition in litchi plantation response to organic mulch and its attribution to litchi downy blight severity was limited. This study aimed to investigate the effect of organic mulch on litchi downy blight, and evaluate the biodiversity and antimicrobial potential of soil microbial community of litchi plantation soils under organic mulch. Results Organic mulch could significantly suppress the disease incidence in the litchi plantation, and with a reduction of 37.74% to 85.66%. As a result of high-throughput 16S rRNA and ITS rDNA gene illumine sequencing, significantly higher bacterial and fungal community diversity indexes were found in organic mulch soils, the relative abundance of norank f norank o Vicinamibacterales, norank f Vicinamibacteraceae, norank f Xanthobacteraceae, Unclassified c sordariomycetes, Aspergillus and Thermomyces were significant more than that in control soils. Isolation and analysis of antagonistic microorganism showed that 29 antagonistic bacteria strains and 37 antagonistic fungi strains were unique for mulching soils. Conclusions Thus, we believe that organic mulch has a positive regulatory effect on the litchi downy blight and the soil microbial communities, and so, is more suitable for litchi plantation.

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Section: Introductionmentioning

confidence: 99%

Organic mulch can suppress litchi downy blight through modification of soil microbial community structure and functional potentials

Ling

Qiao

et al. 2022

BMC Microbiol

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“…At present, studies about litchi downy blight have mostly concentrated on biological characteristics of pathogen, chemical control and screening of resistant cultivars in litchi 17,18 . Little is known about the disease resistance-relevant genes involved in the interaction between host and pathogen, which requires exploration into the resistance mechanisms against P .…”

Section: Introductionmentioning

confidence: 99%

Early responses given distinct tactics to infection of Peronophythora litchii in susceptible and resistant litchi cultivar

Sun

Cao

Huanling

et al. 2019

Sci Rep

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Litchi downy blight, a destructive litchi disease caused by Peronophythora litchii , is controlled by intensive fungicide applying. Sources of resistance are used in conventional breeding approaches, but the mechanism is not well understood. Follow-up six years investigation, ‘Guiwei’ and ‘Heiye’ displayed stable susceptible and resistant against to P . litchii , respectively. After 72 hour inoculation, ‘Heiye’ showed few disease spots, while ‘Guiwei’ appeared brown and covered with white sporangia. Germination of sporangia and growth of mycelium in ‘Guiwei’ is more quickly than in ‘Heiye’. Transcript levels were measured at 6, 24, and 48 hour post-inoculation. ‘Oxidation-reduction process’ was dramatically enhanced in ‘Heiye’, which could promote its resistance to pathogen infection. A small ratio (3.78%) of common DEGs indicates that resistant and susceptible cultivars take different strategies to defense against P . litchii . At early infection stage, ‘Heiye’ induced a larger number of genes, including seven receptor-like kinases, which quickly recognized attack of pathogen and led to a rapidly resistance by regulation of degradation of proteasome, transcription factors, and cell wall remodeling. The early DGEs were exiguous in ‘Guiwei’, suggesting a weak response. Once the infection was successful, the resistance was repressed by down-regulated genes involved in phenylpropanoid metabolism, ET biosynthesis and signaling conduction in ‘Guiwei’. In conclusion, quickly recognition and early responses to pathogen, as well as minimal pathogen development and basal expression of resistance-related genes, were correlated with a high level of resistance in ‘Heiye’, while susceptible ‘Guiwei’ suffered massive infection due to lagging response and repressed signal transduction.

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“…Although phytopathogenic oomycetes exhibit a fungus-like filamentous growth morphology, they belong to Stramenopila kingdom, which are distant relative to fungi in evolution [ 16 ]. The litchi downy blight pathogen Peronophythora litchii (also named Phytophthora litchii ) is one of the notorious phytopathogenic oomycetes, which distributes throughout most litchi-growing regions and causes fruit reductions each year [ 17 , 18 ]. This disease occurs during the growth and development of litchi trees, and is able to infect the tender leaves, panicles and fruits.…”

Section: Introductionmentioning

confidence: 99%

A C2H2 Zinc Finger Protein PlCZF1 Is Necessary for Oospore Development and Virulence in Peronophythora litchii

Zhu

Situ

Guan

et al. 2022

IJMS

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C2H2 zinc finger is one of the most common motifs found in the transcription factors (TFs) in eukaryotes organisms, which have a broad range of functions, such as regulation of growth and development, stress tolerance and pathogenicity. Here, PlCZF1 was identified to encode a C2H2 zinc finger in the litchi downy blight pathogen Peronophythora litchii. PlCZF1 is conserved in P. litchii and Phytophthora species. In P. litchii, PlCZF1 is highly expressed in sexual developmental and early infection stages. We generated Δplczf1 mutants using the CRISPR/Cas9 method. Compared with the wild type, the Δplczf1 mutants showed no significant difference in vegetative growth and asexual reproduction, but were defective in oospore development and virulence. Further experiments revealed that the transcription of PlM90, PlLLP and three laccase encoding genes were down-regulated in the Δplczf1 mutant. Our results demonstrated that PlCZF1 is a vital regulator for sexual development and pathogenesis in P. litchii.

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Biological activity of pterostilbene against Peronophythora litchii, the litchi downy blight pathogen

Cited by 35 publications

References 42 publications

Organic mulch can suppress litchi downy blight through modification of soil microbial community structure and functional potentials

Organic mulch can suppress litchi downy blight through modification of soil microbial community structure and functional potentials

Early responses given distinct tactics to infection of Peronophythora litchii in susceptible and resistant litchi cultivar

A C2H2 Zinc Finger Protein PlCZF1 Is Necessary for Oospore Development and Virulence in Peronophythora litchii

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