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Causing Anthracnose - Crossref

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Last Updated: 03 September 2022

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Detection and bio control measures of anthracnose causing fungus isolated from Citrus limon (L.)

Anthracnose is one of the most common fungi responsible for twig dieback and postharvest fruit decay. Citrus limon leaves were collected and cultured on potato dextrose agar media for pathogenic fungus isolation. The isolated fungal pure culture was characterized by physiological and morphological characterization techniques. In fructose, the highest growth and development of isolated fungus was detected, according to PDA media pH 7 as the most effective carbon source and 0. 05gm NaCl concentrations at 37 u00b0C. Psidium fungus extract from 200 gm/disc methanolic extract revealed 14. 33 mm inhibition zone against the isolated fungus, which was 14. 33 mm in inhibitance.

Source link: https://doi.org/10.5455/jabet.2023.d106


First report of Colletotrichum fioriniae causing anthracnose fruit rot on Vaccinium corymbosum in Chile

Vaccinium corymbosum L. is Chile's most common blueberry species. The Microbial Genetic Resources Bank at INIA in February 2019 enjoyed the benefits of V. corymbosum cv. Some fruits were sunken areas and small surface wounds that exudated orange masses of conidia after 5 d, and gray acervuli were also identified under the epidermis and small surface wounds that exuded orange masses of conidia. Colletotrichum gloeosporioides has, in Chile, been the only causal agent of anthracnose identified in blueberry. All genetic markers were 100% identical to those of C. fioriniae CBS 128517T except for tub, which shared 99. 8% of its species's identities with this species. Maximum likelihood phylogenetic estimation clustered RGM 3330 with C. fioriniae, CBS 128517T and CBS 126526 with 100% bootstrap assistance, with 100% bootstrap coverage. With light/darkness cycles of 12 h, only fruits sprayed with the conidial solution displayed signs of anthracnose and the resolated fungi, similar to RGM 3330 in morphology. In Chile, this is the first report of C. fioriniae in blueberry. Identification, characterization, and incidence of the primary pathogen that causes brown rot in Chile's postharvest sweet chestnut fruits. In blueberry fruit, colletotrichum gloeosporiodes. In Sichuan, China, Colletotrichum species associated with blueberry anthracnose have been identified. Introduced C. fioriniae comb, adding Colletotrichum acutatum to the commence arithmetomatum. On ripe blueberry fruit, Colletotrichum acutatum's novel infection techniques are demonstrated.

Source link: https://doi.org/10.1094/pdis-06-22-1340-pdn


First report of Colletotrichum truncatum causing anthracnose of dragon fruit ( Hylocereus spp.) in India

Dragon fruit is gaining traction due to the high net return, medicinal value, and its ability to survive under less water and poor quality soils. Plants in the area of ICAR-National Institute of Abiotic Stress Management, Baramati's research field, H. undatus and H. polyrhizus plants were affected with anthracnose disease in year 2020 and 2021. For pathogen isolation, lesion edge tissue was excised and disinfected with 1% sodium hypochlorite, three rinses with sterilized water and plated on potato dextrose agar amended with Streptomycin sulphate for four days, with a 12 h photoperiod. Average conidia size was 25. 7 u03bcm, U00d7 3. 7 u03bcm, L/W ratio=6. 9. Morphological features were consistent with Colletotrichum truncatum Andrus & W. D. In MEGA11, a maximum likelihood phylogenetic tree based on all sequenced loci shows the clustering of present isolates in the C. truncatum clade. A spore spray of C. truncatum was inoculated with four month old unwounded stems of H. undatus and H. polyrhizus. At 15 DAI, inoculated plants displayed minute, sunken, water soaked, reddish brown spots that had been converted to sunken patches with black acervuli. The pathogen was re-isolated from symptomatic stems, similar to C. truncatum, and was repeated twice before the pathogen was re-isolated from symptomatic stems. Pathogen identified as C. truncatum based on morphological and molecular characteristics as well as a pathogenicity test. Previously, dragon fruit anthracnose caused by C. truncatum was reported from China and Malaysia. This is the first report in India of C. truncatum causing dragon fruit anthracnose.

Source link: https://doi.org/10.1094/pdis-04-22-0809-pdn


First report of Colletotrichum godetiae causing anthracnose fruit rot on Prunus pseudocerasus in Zhejiang province, China

Prunus pseudocerasus G. Don is an economically vital crop, with 8,420 hm2 of planted area and 35,000 tons in 2020, and is one of consumers' most popular fruits. In April 2022, HeiZhenZhu201d, a severe fruit rot disease strain prevalent in Pujiang province, Zhejiang province, was detected in an orchard. About 200 plants from a research revealed anthracnose-related anthracnose symptoms, with a disease prevalence of more than 70%. U00d7: 4. 4 to 5. 8 million m1u00d5m u00d7 4 to 5. 8 b4m U00b5m m3u00d7 4. 4 to 5. 8 x 0 84 million roed5m The conidia of the representative strain YTTJ-JHGS5 were unicellular, hyaline, smooth-walled, cylindrical to fusiform, from fusi These sequences of ex-holotype C. godetiae CBS133. 44 matched the sequence of C. godetiae VV-087 in 99%; the sequences of BLAST accessions revealed 99% similarity with that sequence; C. godetiae CBS133. 44; the sequences of RC genes of these strains displayed 99% similarity; the sequences of C. godetiae CBS133. Six strains and C. godetiae CBS133. 44 were found in a strong branch of the Bayes phylogenesis, according to a strong branch. These strains were classified as C. godetiae based on morphological characteristics and phylogenesis. The lesions of inoculated fruit leions were re-isolated from the fruits' lesions. In addition, Ceanothus sp. , Fragaria 00d7 ananassa, and so on, globally, C. fructicola infected cherry, has been reported, as has C. godetiae. This is the first report of C. godetiae causing anthracnose fruit rot on Prunus pseudocerasus in China, according to our information.

Source link: https://doi.org/10.1094/pdis-04-22-0862-pdn


First report of Colletotrichum siamense Causing anthracnose on Cinnamomum camphora in Malaysia

Cinnamomum camphora, also known as camphor tree, is widely grown as an ornamental and is used as a source of camphor in Malaysia and is often used as an ornamental. Leaves of three camphor trees with anthracnose symptoms were discovered in a park at Universiti Malaysia Sabah in Sabah province in June 2021. On ten surveyed plants, the average disease prevalence in diseased plants was about 60%, with 30 percent occurring on 30%. Using ImageJ software, the disease severity of ten leaves from each three diseased plants was estimated. Small pieces of symptomatic leaf tissue from three camphor trees were removed from the margin between healthy and disease-presenting tissue. The isolates constituted a clade to C. siamense, according to a phylogenetic analysis based on maximum likelihood on the concatenated ITS, CAL, ACT, CHS-1, and GAPDH sequences. Koch's postulates were carried out by spraying a spore suspension on the leaves of three healthy two-month-old camphor trees, while water was sprayed on three additional camphor trees that served as control. The inoculated camphor trees were treated with plastic for 48 hours at 25u00b0C in the dark, and then planted in the greenhouse. Citrus spp. has been identified as causing anthracnose on camphor tree in China, causing anthracnose on the tree. This is the first report of C. siamense causing anthracnose on C. camphora in Malaysia, according to our knowledge. Our results extend the geographical coverage of C. siamense and indicate that it could pose a risk to Malaysia's C. camphora production.

Source link: https://doi.org/10.1094/pdis-12-21-2787-pdn


First Report of Colletotrichum truncatum Causing Anthracnose of Green Foxtail (Setaria viridis) in China

After a week of rain, in many greenhouses of Xinkou town, Xiqing district, Tianjin, China, under cloudy and high humidity conditions in September 2021. Leaf spots were found in 28 greenhouses of XinKou town, over 60% of the weeds had leaf spots. On leaves of S. viridis, brown spots of 1 to 5 mms, longitudinal elliptic, round, or spindle-shaped lesions were first noted. On 3-leaves-stage S. viridis seedlings, pathogenicity testing was carried out. On 20 S. viridis seedlings, with the restriction of each isolate being sprayed on 10 seedlings, a Conidial suspension of isolates was sprayed on ten seedlings. After 7 days, typical leaf spot symptoms were present on inoculated leaves, but control leaves remained symptomless. The results revealed that the strains isolated from Setaria viridis were highly related to Colletotrichum truncatum with 100% bootstrap support. The isolated strains from S. viridis were identified as Colletotrichum truncatum, according to morphological, pathological, and multilocus phylogenetic analysis. Setaria sp. is a common plant pathogen that has been previously reported as causing anthracnose on Setaria sp. C. graminicola has infected nine species of Setaria sp. Up to now, it has been reported that Up to now, it has been confirmed that C. graminicola has infected nine species of Setaria sp. This is a new host record for Colletotrichum truncatum causing anthracnose on S. viridis in China, according to our knowledge. Colletotrichum truncatum sprang rapidly and gave Setaria viridis severe disease. By the production of secondary metabolites by C. truncatum, we hope to find a biocontrol strategy against weed on non-host cultivated plants.

Source link: https://doi.org/10.1094/pdis-02-22-0352-pdn

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions