Incense cedar [ (Torr.) Florin] is a coniferous evergreen tree, indigenous to western North America, that is being evaluated in Tennessee for its adaptability to eastern U.S.
View Article and Find Full Text PDFEastern redbuds () are the important trees in Tennessee nurseries, known for their vibrant spring blooms, and heart-shaped foliage (Kidwell-Slak and Pooler 2018). In May 2023, container-grown eastern redbuds exhibited crown and root rot symptoms. Disease incidence was 50% of 100 plants and severity was 40% for the affected root area.
View Article and Find Full Text PDFSwamp white oak () is a North American species of medium-sized trees in the beech family. One-year-old swamp white oak seedlings grown in field conditions in a commercial nursery in Warren County, Tennessee exhibited severe root rot in July 2024. Dark brown lesions were observed in the affected roots (Fig.
View Article and Find Full Text PDFCrown gall is a soil-borne bacterial disease caused by , leading to significant economic losses in many plant species. For the assessment of the biological and chemical products on crown gall, each plant's crown region and roots were wounded, and then were dipped into their respective treatments. After the treatments, the plants were inoculated with a suspension of pathogenic isolate FBG1034 and maintained in a greenhouse for six months to assess them for gall formation.
View Article and Find Full Text PDFEastern redbud ( L.) is a popular and high-value woody ornamental plant native to the eastern and south-central United States of America (U.S.
View Article and Find Full Text PDFKousa dogwood () is an economically important woody ornamental crop that exhibits creamy, white, pointed bracts in late spring, and reddish to pink drupe fruits in late summer and fall. It bears shiny dark green leaves that become reddish-purple to scarlet in the fall. In August of 2023, 3-year-old container grown var.
View Article and Find Full Text PDFAmerican ginseng, a highly valuable crop in North America, is susceptible to various diseases caused by fungal pathogens, including spp., spp., and spp.
View Article and Find Full Text PDFJapanese camellia (), is an important ornamental species that has an increasing economic value in China, Japan, Australia and the USA (Vela et al. 2013). Leaf blight symptoms were observed on 20-year-old 'April Tryst' leaves collected from a research plot in McMinnville, TN in March 2022.
View Article and Find Full Text PDFThe eastern redbud ( L.) is an esthetically and economically important landscape tree with vibrant blossoms and attractive heart-shaped leaves. One-year-old eastern redbud seedlings grown in field condition in two commercial nurseries in Warren Co.
View Article and Find Full Text PDF(de Bary) Abad, de Cock, Bala, Robideau, A. M. Lodhi & Levesque is an important waterborne and soil-inhabiting oomycete pathogen causing root and crown rot of various plants including certain woody ornamentals, fruit, and forest trees.
View Article and Find Full Text PDFOakleaf hydrangea () is an important ornamental plant grown in Tennessee. In May 2018, after late spring frost, cultivars Pee Wee and Queen of Hearts showed root and crown rot symptoms and identification and management of the disease was a major concern. The objective of this research was to identify the causal organism of this disease and develop management recommendations for nursery growers.
View Article and Find Full Text PDFAmerican ginseng ( L.) is an herbaceous perennial understory plant. It was listed as endangered species by the Convention on International Trade in Endangered Species of Wild Fauna and Flora (McGraw et al.
View Article and Find Full Text PDFRed maple ( L.) is an economically important ornamental nursery plant grown for its aesthetic value. In May 2022, field and container-grown red maple 'October Glory' plants exhibited severe leaf spots in a commercial nursery in Warren Co.
View Article and Find Full Text PDFAmerican ginseng ( L.) is one of the most valuable medicinal plants that is native to the U.S.
View Article and Find Full Text PDFAmerican ginseng ( L.), native to the forested regions of northeast U.S is a perennial herb valued as traditional Chinese medicine.
View Article and Find Full Text PDFpv. , which causes bacterial canker, is the most polyphagous bacterium in the . complex because of its broad host range.
View Article and Find Full Text PDFBoxwood ( sp. L.) is a very popular evergreen shrub in the United States which is widely used as landscape plant and fresh greenery.
View Article and Find Full Text PDFSoilborne diseases caused by pathogens such as , , , , and species are the most important diseases of woody ornamentals. Ginkgo () and red maple ( 'October Glory') plants grown in containers and fields in Tennessee showed root and crown rot symptoms with dark brown to black lesions in 2017 and 2018. The objective of this research was to isolate and identify pathogens affecting ginkgo and red maple plants in Tennessee nurseries and to develop fungicide/biofungicide management recommendations for nursery producers.
View Article and Find Full Text PDFEastern ninebark ( (L.) Maxim.) is a popular native perennial plant used in landscapes because of its colorful foliage and spring flower display.
View Article and Find Full Text PDFFlowering cherry ( Lindl. 'Kwanzan') rooted cuttings grown in propagation beds containing 40% coarse sand and 60% ground pine bark in a commercial propagation nursery in Warren County, Tennessee were exhibiting root and crown rot in December 2016. Dark brown to black soft lesions were observed in the roots as well as the crown region of flowering cherry rooted cuttings and those rooted cuttings were non-marketable due to lesions.
View Article and Find Full Text PDFDNA barcoding involves the use of one or more short, standardized DNA fragments for the rapid identification of species. A 648-bp segment near the 5' terminus of the mitochondrial cytochrome oxidase subunit I (COI) gene has been adopted as the universal DNA barcode for members of the animal kingdom, but its utility in mushrooms is complicated by the frequent occurrence of large introns. As a consequence, ITS has been adopted as the standard DNA barcode marker for mushrooms despite several shortcomings.
View Article and Find Full Text PDFIdentification of edible mushrooms particularly Pleurotus genus has been restricted due to various obstacles. The present study attempted to use the combination of two variable regions of IGS1 and ITS for classifying the economically cultivated Pleurotus species. Integration of the two regions proved a high ability that not only could clearly distinguish the species but also served sufficient intraspecies variation.
View Article and Find Full Text PDFNF kappa B inhibitor alpha (MrNFκBI-α) was sequenced from a freshwater prawn Macrobrachium rosenbergii. The MrNFκBI-α protein contains a long ankyrin repeat region circular domain between 193 and 413 along with its 6 repeats (ankyrin repeat 1,2,3,4,5 and 6). An IκB degradation motif and a putative PEST motif is present at 37-64 and 418-471 of the N- and C-terminal regions of MrNFκBI-α respectively.
View Article and Find Full Text PDF