First Report of <i>Colletotrichum siamense</i> Causing Anthracnose on Partridge tea (<i>Mallotus oblongifolius</i>) in China

Liu, T.; Chen, D.; Liu, Z.; Hou, Jumei

doi:10.1094/pdis-12-17-1957-pdn

Cited by 7 publications

(5 citation statements)

References 3 publications

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“…MuellArg], Euphorbiaceae, commonly known as mountain bitter tea, Maocha, etc. [ 1 ], is mainly distributed in Sumatra, the Sino–Indian Peninsula, and China’s Hainan region [ 2 ]. It is abundant in polyphenols, polysaccharides, β-sitosterol, volatile oils, and other bioactive compounds [ 3 ].…”

Section: Introductionmentioning

confidence: 99%

Ultrasonic-Assisted Extraction and Gastrointestinal Digestion Characteristics of Polysaccharides Extracted from Mallotus oblongfolius

Tan,

Duan,

Xia

et al. 2024

Foods

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The polysaccharides were extracted from the leaves of Mallotus oblongifolius (MO) using an ultrasonic-assisted extraction method in this study. The main variables affecting the yield of polysaccharides extracted from Mallotus appallatus (MOPS) were identified and optimized while concurrently investigating its antioxidant capacity, hypoglycemic activity, and digestive properties. The results indicated that the optimal ultrasound-assisted extraction of MOPS involved an ultrasound power of 200 W, a liquid-to-solid ratio of 25:1 (mL:g), an extraction temperature of 75 °C, and an ultrasound time of 45 min, leading to an extraction yield of (7.36 ± 0.45)% (m/m). The MOPS extract exhibited significant scavenging activity against DPPH and ABTS radicals with IC50 values of (25.65 ± 0.53) μg/mL and (100.38 ± 0.38) μg/mL, respectively. Furthermore, it effectively inhibited the enzymatic activities of α-glucosidase and α-amylase with IC50 values of (2.27 ± 0.07) mg/mL and (0.57 ± 0.04) mg/mL, respectively. The content of MOPS remained relatively stable in the stomach and small intestine; however, their ability to scavenge DPPH radicals and ABTS radicals and exhibit reducing power was attenuated, and the inhibition of α-amylase and α-glucosidase activity was diminished. In conclusion, the ultrasonic extraction of MOPS showed feasibility and revealed antioxidant and hypoglycemic effects. However, the activities were significantly reduced after gastric and small intestinal digestion despite no significant change in the MOPS content.

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Section: Introductionmentioning

confidence: 99%

Ultrasonic-Assisted Extraction and Gastrointestinal Digestion Characteristics of Polysaccharides Extracted from Mallotus oblongfolius

Tan,

Duan,

Xia

et al. 2024

Foods

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“…Mallotus oblongifolius (MO) is a characteristic substitute for tea beverages in Hainan, China [ 10 ]. It is locally known as “glossy ganoderma grass” with important medicinal and economic value [ 11 ].…”

Section: Introductionmentioning

confidence: 99%

Protective Effect of Polyphenols Purified from Mallotus oblongfolius on Ethanol-Induced Gastric Mucosal Injury by Regulating Nrf2 and MAPKs Pathways

Duan

Wang

et al. 2022

Antioxidants

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Mallotus oblongifolius (MO), which is rich in polyphenols, is a characteristic tea resource with medicinal value. In this study, a total of 45 polyphenolic components of MO, including narirutin, isoquercitrin, rutin and digallic acid, were identified by UPLC-Q-TOF/MS analysis. In addition, the gastroprotective effect of Mallotus oblongifolius polyphenols (MOP) on ethanol-induced gastric mucosal injury in rats was investigated. The rats received anhydrous ethanol after continuous gavage of MOP or lansoprazole for one week. In addition, the macro- and micro-damage induced by ethanol in the gastric tissue was significantly reduced after MOP pretreatment for one week. Further analysis showed that MOP prevented ethanol-induced acute gastric mucosal injury by increasing the expression of antioxidant enzymes (SOD, CAT, GSH-Px) and decreasing the expression of reactive oxygen species (ROS), lipid oxidation product (MDA) and myeloperoxidase (MPO). Meanwhile, MOP inhibited the phosphorylation of p38/ERK/JNK and promoted the activation of the Nrf2 pathway. These results suggested that MOP may be a promising therapeutic target for the prevention of ethanol-induced gastric mucosal injury by improving oxidative stress, inhibiting the p38/ERK/JNK signaling pathways and activating Nrf2 expression.

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“…C. brevisporum , C. gloeosporiodes and C. truncatum cause pepper anthracnose disease in India and China (Liu, Tang, et al, ). Colletotrichum siamense has been found on partridge tea, citrus and mango in China, India, South Africa and Brazil (Cheng et al, ; Liu et al, ; Liu, Chen, Liu, & Hou, ). Similarly, C. dematium has been isolated from a range of crops including common knotgrass in China, cowpea in South Africa, tomato fruits and mulberry in Argentina, the ornamental plant German Statice in Bulgaria, and spinach in Australia and the USA (Correll et al, ; Smith & Aveling, ; Yoshida & Shirata, ; Dal Bello, ; Washington et al, ; Bobev, Jelev, Zveibil, Maymon, & Freeman, ; Liu, Jin, et al, ).…”

Section: Introductionmentioning

confidence: 99%

Single‐marker and haplotype‐based association analysis of anthracnose (Colletotrichum dematium)resistance in spinach (Spinacia oleracea)

Awika

Cochran²,

Joshi³

et al. 2019

Plant Breeding

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Anthracnose (Colletotrichum dematium) is an important disease in spinach (Spinacia oleracea). Sources of resistance must be identified, and molecular tools must be developed to expedite cultivar development. In this study, a diverse collection of 276 spinach accessions was scored for anthracnose disease severity. We then evaluated marker identification approaches by testing how well haplotype‐based trait modelling compares to single markers in identifying strong association signals. Alleles in linkage disequilibrium were tagged in haplotype blocks, and anthracnose‐associated molecular markers were identified using single‐SNP (sSNP), pairwise haplotype (htP) and multi‐marker haplotype (htM) SNP tagging approaches. We identified 49 significantly associated markers distributed on several spinach chromosomes using all methods. The sSNP approach identified 13 markers, while htP identified 24 (~63% more) and htM 34 (~162% more). Of these markers, four were uniquely identified by the sSNP approach, nine by htP and nineteen by htM. The results indicate that resistance to anthracnose is polygenic and that haplotype‐based analysis may have more power than sSNP. Using a combination of these methods can improve the identification of molecular markers for spinach breeding.

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First Report of Colletotrichum siamense Causing Anthracnose on Partridge tea (Mallotus oblongifolius) in China

Cited by 7 publications

References 3 publications

Ultrasonic-Assisted Extraction and Gastrointestinal Digestion Characteristics of Polysaccharides Extracted from Mallotus oblongfolius

Ultrasonic-Assisted Extraction and Gastrointestinal Digestion Characteristics of Polysaccharides Extracted from Mallotus oblongfolius

Protective Effect of Polyphenols Purified from Mallotus oblongfolius on Ethanol-Induced Gastric Mucosal Injury by Regulating Nrf2 and MAPKs Pathways

Single‐marker and haplotype‐based association analysis of anthracnose (Colletotrichum dematium)resistance in spinach (Spinacia oleracea)

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