Publications by authors named "De-wei Li"
is a long-established, well known and globally important genus of plant pathogens. Phylogenetic evidence has shown that the biologically distinct, obligate biotrophic downy mildews evolved from at least twice. Since, cladistically, this renders 'paraphyletic', it has been proposed that evolutionary clades be split into multiple genera (Runge et al.
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- * Five representative strains of these pathogens were isolated from affected needles in Nanjing, leading to the identification of a new species, referred to as sp. nov.
- * This research marks the first report of needle blight caused by this specific pathogen in China and globally, highlighting the need for further study on disease management strategies.
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- Chinese fir is a valuable and fast-growing tree species in China that is currently facing issues with leaf blight disease.
- Researchers studied the diversity of fungal species causing this disease in several Chinese provinces, identifying five species across four complexes, including two known and three new species.
- Pathogenicity tests revealed significant variations in how aggressive these species are, with one strain causing the most severe symptoms, marking the first report of these fungi affecting Chinese fir in the country.
Chinese fir () is a special fast-growing commercial tree species in China and has significant ecological and economic value. However, it experienced damage from leaf blight caused by pathogenic fungi of the genus . To determine the diversity of species associated with leaf blight of Chinese fir in China, infected leaves were collected from five major cultivation provinces (Fujian, Henan, Hunan, Jiangsu and Shandong provinces).
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- Recent studies suggest that physical activity may help prevent gastroesophageal reflux disease (GERD) and Barrett's esophagus (BE), but the exact relationship is not well understood.
- Researchers used Mendelian randomization to analyze data from the UK Biobank and other sources, linking physical activity to GERD/BE outcomes.
- Findings indicate that while strenuous exercise appears to reduce the risk of GERD/BE, certain occupational activities like heavy physical labor and shift work increase the risk, highlighting the importance of workplace health measures.
, a Novel Causal Agent of Leaf Blotch and Its Sensitivity to Fungicides.
J Fungi (Basel)
August 2023
Ker-Gawl is native to Asia and is usually used as a garden ornamental. In September 2022, a leaf blotch on was observed in Nanjing, Jiangsu, China. The disease causes the leaves of the plants to curl and dry up and defoliate early.
View Article and Find Full Text PDFSchneid. is widely planted as a versatile tree species with ecological and economic significance. In September 2022, a leaf blotch disease of was observed in Nanjing, Jiangsu, China, with an infection incidence of 63%.
View Article and Find Full Text PDFWalnut is cultivated around the world for its precious woody nut and edible oil. Recently, walnut infected by spp. resulted in a great yield and quality loss.
View Article and Find Full Text PDFHance is an important medicinal and ornamental plant. This species is native to South Central China and Vietnam and grows primarily in the subtropical biomes. In June 2022, 17 strains were isolated from leaf tip blight on foliage of in Nanjing, Jiangsu, China.
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- - Thunb. is a popular ornamental tree in East Asia known for its vibrant leaves, but a foliar disease with about 95% incidence was reported in community parks in Shaoxing, Xuzhou, and Wuhan, China, in October 2021.
- - The disease symptoms included brown necrotic lesions on leaves, and researchers collected symptomatic leaves to isolate the responsible fungus, finding a 31% success rate in their cultured samples.
- - Three distinct fungal isolates were identified and characterized using morphological traits and genetic analysis, matching them to the species described in previous studies, indicating a possible emerging health threat to Thunb. trees.
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- D. Don trees, popular in southern China for their ornamental beauty, recently suffered a disease outbreak causing severe dieback symptoms, particularly in Nanjing.
- An extensive survey of 130 trees revealed that over 90% were affected, showing brown crowns without noticeable bark differences from healthy trees.
- Fungal isolates were collected from the affected trees, with seven identified as pathogenic and responsible for stem basal canker; one of these isolates represented a new species, with both pathogens being significant threats to D. Don trees.
Background: In recent years, studies have found that the occurrence and development of diabetic cardiomyopathy (DCM) is closely related to an increase in polyadenosine diphosphate-ribose polymerase-1 (PARP-1) activity. PARP-1 activation could be involved in the pathophysiological process of DCM by promoting oxidative stress, the inflammatory response, apoptosis and myocardial fibrosis.
Aim: To investigate the mechanism of liraglutide in improving myocardial injury in type 2 diabetic rats, further clarified the protective effect of liraglutide on the heart, and provided a new option for the treatment of DCM.
Phylogenetic and morphological analyses on samples of from East Asia and North America were carried out, and two new species were described, namely, and , both previously known as . The former is characterized by lateral stipitate basidiocarps, relatively small pores (7-8 per mm), a monomitic hyphal system with both clamp connections and simple septa, and ellipsoid basidiospores of 4-4.8 × 3-3.
View Article and Find Full Text PDF(L.) DC. (Menispermaceae) is a vine traditionally used as a medicinal herb in Asia and grows primarily in wet tropical biomes (POWO 2022).
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- Serum procalcitonin (PCT) is typically used to identify bacterial infections, but it can also be elevated in certain cancers, making it essential to distinguish between the two, especially in conditions like hepatocellular carcinoma (HCC).
- A 62-year-old male with a hepatic lesion showed elevated PCT levels, but after ruling out infections and undergoing surgery, he was diagnosed with HCC, where his PCT levels eventually normalized as he recovered.
- The study highlights that HCC cells can produce PCT independently of infections, suggesting that PCT might be useful in monitoring cancer treatment effectiveness.
Background: Anthracnose is one of the most widespread and destructive diseases on Chinese fir. Colletotrichum cangyuanense, Colletotrichum fructicola, Colletotrichum gloeosporioides, and Colletotrichum siamense are the causal agents of anthracnose on Chinese fir. A rapid and accurate diagnosis of different pathogens is critical for the disease management.
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- The pathogen Fr. Pat. is a common forest threat to conifers in the Northern Hemisphere and has been identified as a species complex with six related taxa.
- Molecular studies show that the species sensu stricto is primarily found in Eurasia, with new species identified in Northeast and Southwest China through detailed analyses.
- North America also has three distinct taxa that differ from the Eurasian sensu stricto, with specific distributions identified across Southeast, Northeast, and western regions of the continent.
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- A leaf spot disease affected 25-year-old trees at Nanjing Forestry University, with a 61% incidence rate, initially showing dark brown spots that expanded over time.
- Three isolates of the causal organism were collected, characterized by their white to grayish-white colonies and specific sizes of their conidia and conidiophores.
- Molecular analysis of the isolates was conducted, using various genes and regions, and the sequence data was deposited in GenBank for further research.
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- Gaertn., or soapberry, is a landscaping tree commonly found in Southern China, where a foliar disease affecting about 60% of trees was observed in June 2019 at a germplasm repository in Fujian.
- The disease initially presented as yellow spots that turned dark brown over time, leading to the collection and identification of two fungal isolates (FJ1 and FJ21) based on their morphological characteristics.
- DNA analysis of these isolates confirmed their relationships to known fungi, with sequences made publicly available in GenBank, showing high similarity to other species in the same genus.
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- Thigmotaxis is how small animals, like German cockroaches, prefer to stay close to surfaces for safety and comfort.
- In experiments, these cockroaches showed a strong liking for shelters with angles of 40° or less for both short and long periods.
- Cockroaches growing in shelters with steeper angles (90°) had low survival rates and took longer to grow, showing that the right environment is super important for their health.
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- An evergreen tree known as var. (K. Koch) Zabel ex Rumpl. was observed to have a foliar disease affecting about 60% of its population at Nanjing Forestry University in June 2019, displaying symptomatic red-brown spots.
- Tissue samples from the lesions were sterilized and cultured on potato dextrose agar, leading to the isolation of two distinct fungal cultures, SH161 and SH181, which showed typical features of a specific fungal species associated with the disease.
- DNA analysis of the isolates was conducted to amplify various gene regions, with sequences being deposited in GenBank, and a BLAST search revealed high similarity with known fungal sequences, indicating a potential connection to existing species.
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- The study describes and illustrates three newly identified species that act as plant pathogens, endophytes, and saprobes based on their morphology and phylogenetic analysis.! -
- Researchers utilized multilocus phylogenetic analyses, examining partial sequences from multiple genes, to understand the evolutionary relationships of these new species.! -
- Koch's postulates were applied, confirming that the three new species cause leaf blight, establishing them as pathogens affecting plants.!
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- - In August 2021, a significant blight affecting 20% of 1-year-old seedlings of *Lamb.* occurred in a nursery in Luzhai, Guangxi, China, primarily impacting shoot tips and causing visible symptoms like brown and reddish needles and shoots.
- - Three fungal isolates (GXJ2, GXJ4, and GXJ6) were obtained from the affected seedlings, characterized by different morphologies of conidia and growth patterns on potato dextrose agar (PDA).
- - Genetic analysis revealed that GXJ2 closely matched *[genus name]* with over 99% similarity in sequences, while GXJ4 and GXJ6 were similar to *[another genus]*, confirming
is a popular ornamental tree species known for its fragrant flowers and is widely cultivated in Asia, Europe, and North America. Anthracnose is a disastrous threat to the growth and development of and has caused significant economic losses. To reveal the potential pathogen diversity of anthracnose, 127 isolates of were isolated from the symptomatic leaves.
View Article and Find Full Text PDFLow Tumor Infiltrating Mast Cell Density Reveals Prognostic Benefit in Cervical Carcinoma.
Technol Cancer Res Treat
June 2022
Article Synopsis
- The study investigates the role of mast cells (MCs) in the immune response to cervical carcinoma (CC), utilizing data from The Cancer Genome Atlas (TCGA) to evaluate their prognostic significance.
- Findings reveal that low mast cell density (MCD) correlates with better overall survival in patients, indicating that high infiltration of MCs may have a negative impact on patient outcomes.
- Additionally, the research identifies key genes related to inflammatory and immune responses, suggesting that the interaction between MCs and cytokines in the tumor microenvironment could serve as potential targets for prognostic evaluation and immunotherapy in CC.