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Journal articles on the topic 'Japanese walnut (Juglans ailantifolia)'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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1

Hoban, Sean M., Tim S. McCleary, Scott E. Schlarbaum, and Jeanne Romero-Severson. "Geographically extensive hybridization between the forest trees American butternut and Japanese walnut." Biology Letters 5, no. 3 (2009): 324–27. http://dx.doi.org/10.1098/rsbl.2009.0031.

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We investigate the question of naturally occurring interspecific hybrids between two forest trees: the native North American butternut ( Juglans cinerea L.) and the introduced Japanese walnut ( Juglans ailantifolia Carrière). Using nuclear and chloroplast DNA markers, we provide evidence for 29 F 1 and 22 advanced generation hybrids in seven locations across the eastern and southern range of the native species. Two locations show extensive admixture (95% J. ailantifolia and hybrids) while other locations show limited admixture. Hybridization appears to be asymmetrical with 90.9 per cent of hyb

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2

Ostry, M. E. "Sirococcus clavigignenti-juglandacearum on Heartnut (Juglans ailantifolia var. cordiformis)." Plant Disease 81, no. 12 (1997): 1461. http://dx.doi.org/10.1094/pdis.1997.81.12.1461a.

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Branch dieback was observed throughout the crown of a 25-year-old heartnut, a variety of Japanese walnut, growing in a mixed plantation with black walnut (J. nigra) in central Iowa in the spring of 1997. No cankers were evident. However, hyphal pegs and hyaline, two-celled, fusiform conidia were present on the affected 1996 branch wood. These are characteristic of S. clavigignenti-juglandacearum, the cause of branch and stem cankers on butternut, also called white walnut, (J. cinerea) (1). The fungus was isolated in pure culture from symptomatic twigs. The ability of this isolate to cause cank

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3

Zhao, Peng, and Keith E. Woeste. "DNA markers identify hybrids between butternut (Juglans cinerea L.) and Japanese walnut (Juglans ailantifolia Carr.)." Tree Genetics & Genomes 7, no. 3 (2010): 511–33. http://dx.doi.org/10.1007/s11295-010-0352-4.

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4

Hoban, Sean, and Jeanne Romero-Severson. "Homonymy, synonymy and hybrid misassignments in butternut (Juglans cinerea) and Japanese walnut (Juglans ailantifolia) nut cultivars." Genetic Resources and Crop Evolution 59, no. 7 (2011): 1397–405. http://dx.doi.org/10.1007/s10722-011-9767-5.

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5

Preece, John E., and Gale McGranahan. "Luther Burbank’s Contributions to Walnuts." HortScience 50, no. 2 (2015): 201–4. http://dx.doi.org/10.21273/hortsci.50.2.201.

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Luther Burbank began making controlled crosses between walnut species in the late 19th century after hearing about a “supposed natural European hybrid walnut.” He crossed Juglans hindsii (northern California black walnut) × J. regia (Persian walnut) and produced progeny that he named ‘Paradox’ because of its extremely fast growth and other “anomalies.” He also crossed two American species, J. hindsii × J. nigra (eastern black walnut), producing ‘Royal’ walnut progeny that were fast-growing and prolific nut producers. A third interspecific hybrid was a cross between J. ailantifolia (Japanese wa

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6

Yun, H. Y., and T. C. Harrington. "First Report of the Walnut Witches'-Broom Phytoplasma on Japanese and Black Walnut in Iowa." Plant Disease 95, no. 11 (2011): 1474. http://dx.doi.org/10.1094/pdis-05-11-0412.

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A single Japanese walnut (Juglans ailantifolia Carrière, an ornamental, deciduous tree) with symptoms of witches'-brooms and branch dieback, consistent with those associated with the walnut witches'-broom (WWB) phytoplasma (1), was observed near Ames, IA. No other Japanese walnut trees were present in the planting and the numerous black walnut (Juglans nigra L.) trees were asymptomatic. Leaf samples were collected in September 2009 from witches'-brooms as well as from two asymptomatic branches from the Japanese walnut tree and from three branches each from two nearby (10 m and 100 m away, resp

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7

Ostry, M. E., and M. Moore. "Natural and Experimental Host Range of Sirococcus clavigignenti-juglandacearum." Plant Disease 91, no. 5 (2007): 581–84. http://dx.doi.org/10.1094/pdis-91-5-0581.

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The fungus Sirococcus clavigignenti-juglandacearum causes butternut canker in North America and is not known to kill or seriously affect tree species other than butternut (Juglans cinerea). However, this putative exotic pathogen has been found on branches of black walnut (J. nigra) and heartnut (J. ailantifolia var. cordiformis), raising questions regarding the potential host range of the pathogen and its spread to new areas on tree hosts other than butternut. Results of artificial inoculations of several hardwood species indicated that the pathogen, although not causing lethal cankers, has th

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8

Crystal, Philip A., and Douglass F. Jacobs. "Drought and flood stress tolerance of butternut (Juglans cinerea) and naturally occurring hybrids: implications for restoration." Canadian Journal of Forest Research 44, no. 10 (2014): 1206–16. http://dx.doi.org/10.1139/cjfr-2014-0151.

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Efforts to restore species threatened by introduced pathogens often include breeding resistance into susceptible native species from resistant exotics, but this is a lengthy and expensive process. Naturally occurring hybrids between susceptible and resistant species may accelerate this process if they fulfill the desired species’ ecological function. To explore this possibility, we exposed the following seedlings to drought and flood treatments in a controlled environment: Juglans cinerea L. (butternut), which has been devastated by an exotic pathogen; Juglans ailantifolia Carr. var. cordiform

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9

Utley, Curtis, Tivonne Nguyen, Tatiana Roubtsova, et al. "Susceptibility of Walnut and Hickory Species to Geosmithia morbida." Plant Disease 97, no. 5 (2013): 601–7. http://dx.doi.org/10.1094/pdis-07-12-0636-re.

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Thousand cankers disease (TCD) of walnut is a result of feeding in the phloem by the walnut twig beetle (WTB), Pityophthorus juglandis, and subsequent canker formation caused by Geosmithia morbida around galleries. TCD has caused extensive morbidity and mortality to Juglans nigra in the western United States and, in 2010, was discovered in the eastern United States, where the tree is a highly valuable timber resource. WTB and G. morbida also have been found in J. regia orchards throughout major production areas in California, and the numbers of damaged trees are increasing. We tested the susce

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10

ZHAO, Peng, Gui-Fang ZHAO, Shuo-Xin ZHANG, Hui-Juan ZHOU, Yi-Heng HU, and Keith E. WOESTE. "RAPD derived markers for separating Manchurian walnut (J uglans mandshurica ) and Japanese walnut (J . ailantifolia ) from close congeners." Journal of Systematics and Evolution 52, no. 1 (2013): 101–11. http://dx.doi.org/10.1111/jse.12059.

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11

Tamura, Noriko, and Eiko Shibasaki. "Fate of Walnut Seeds,Juglans airanthifolia, Hoarded by Japanese Squirrels, Sciurus lis." Journal of Forest Research 1, no. 4 (1996): 219–22. http://dx.doi.org/10.1007/bf02348328.

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12

Watson, G. W., and A. M. Hewitt. "Development of Root Architecture in Thirty-seven Tree Species of Field Grown Nursery Stock1." Journal of Environmental Horticulture 38, no. 4 (2020): 143–48. http://dx.doi.org/10.24266/0738-2898-38.4.143.

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Abstract The number and size of lateral roots of a tree seedling can be evaluated visually, and could potentially be used to select plants with better root systems early in nursery production. To evaluate how root architecture develops in young trees, root architecture of 37 species of trees was compared at two stages of development: as harvested seedlings, and then one year after replanting. The total number of lateral roots and the number of roots &gt;2mm (0.08 in) diameter that were present on the portion of the taproot remaining on seedlings after standard root pruning were recorded. N

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13

"Sirococcus clavigignenti-juglandacearum. [Distribution map]." Distribution Maps of Plant Diseases, no. 1) (August 1, 2008). http://dx.doi.org/10.1079/dmpd/20083091295.

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Abstract A new distribution map is provided for Sirococcus clavigignenti-juglandacearum Nair, Kostichka & Kunz. Fungi: Ascomycota: Gnomoniaceae. Hosts: butternut (Juglans cinerea), walnut (Juglans regia), black walnut (Juglans nigra) and heartnut (Juglans ailantifolia var. cordiformis). Information is given on the geographical distribution in North America (Canada, New Brunswick, Ontario, Quebec, USA, Alabama, Arkansas, Georgia, Indiana, Iowa, Kentucky, Maine, Michigan, Minnesota, Mississippi, New York, North Carolina, Pennsylvania, South Carolina, Tennessee, Vermont, West Virginia, Wiscon

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14

Yang, Chunlin, Feng Liu, Qian Zeng, et al. "First Report of Brown Leaf Spot of Juglans hybrid Caused by Ophiognomonia leptostyla in China." Plant Disease, June 7, 2021. http://dx.doi.org/10.1094/pdis-05-21-0981-pdn.

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“Chuanzao 2” is a walnut variety derived from the hybridization of Juglans regia L. and J. sigillata Dode distributed in southwest China, where it is an economically important tree species in rural regions (Xiao et al. 2012). In April 2020, the variety in a walnut garden showed symptoms of brown leaf spot in Beishan Town (107°21′43.93″E, 31°28′12.34″N), Dazhou City in Sichuan, China, with 5% to 10% of leaves per plant affected (5 plants). Symptomatic leaves showed brown to dark brown spots (2 to 5 mm) with a dark brown to black halo and grayish-tan center. The spots were subcircular to irregul

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15

"Agrilus planipennis. [Distribution map]." Distribution Maps of Plant Pests, No.June (August 1, 2006). http://dx.doi.org/10.1079/dmpp/20063140407.

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Abstract A new distribution map is provided for Agrilus planipennis Fairmaire. Coleoptera: Buprestidae. Hosts: Chinese cork bark elm (Ulmus parvifolia var. corticara), Fraxinus spp., Japanese wingnut (Pterocarya rhoifolia) and Manchurian walnut (Juglans mandshurica). Information is given on the geographical distribution in Europe (Russia, Russian Far East), Asia (China, Hebei, Heilongjiang, Jilin, Liaoning, Nei Menggu [Nei Mongol], Shandong, Xinjiang, Japan, Hokkaido, Honshu, Kyushu, Shikoku, Korea Democratic People's Republic, Korea Republic, Mongolia, Taiwan), and North America (Canada, Onta

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16

Yang, Chunlin, Yu Deng, Feihu Wang, et al. "First report of brown leaf spot on Juglans sigillata caused by Ophiognomonia leptostyla in Sichuan, China." Plant Disease, June 25, 2021. http://dx.doi.org/10.1094/pdis-02-21-0344-pdn.

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Juglans sigillata Dode (Iron walnut) is mostly distributed in southwestern China, and valued for wood and nuts (Feng et al. 2018). In April 2020, we surveyed a walnut garden located in Baisha Town, Wanyuan City, (Sichuan, China), where brown spot symptoms were observed on leaves of ten trees among of 100 plants, and this disease can result in a reduced growth potential when trees are severely infected. Necrotic and subcircular lesions with conidiamata were observed on diseased leaves. Symptomatic leaves were collected and taken back to the laboratory forfurther analysis. Using the single spore

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17

Pike, Carolyn C., Martin Williams, Andrea Brennan, et al. "Save Our Species: A Blueprint for Restoring Butternut (Juglans cinerea) across Eastern North America." Journal of Forestry, December 28, 2020. http://dx.doi.org/10.1093/jofore/fvaa053.

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Abstract Butternut is a relatively uncommon hardwood tree native to eastern North America. The species’ abundance has declined over the past 50 years, primarily because of an invasive pathogen (Ophiognomonia clavigignenti-juglandacearum [Oc-j]) and loss of suitable habitat for regeneration. Although genetic diversity of butternut is highest along the southern range edge, genetic diversity rangewide is fairly high, except in small and isolated populations. Although there is little evidence for even moderate resistance in native butternut, hybrids with Japanese walnut, a closely related species,

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18

Luan, Fei, Ziyan Wang, Yan Yang, et al. "Juglans mandshurica Maxim.: A Review of Its Traditional Usages, Phytochemical Constituents, and Pharmacological Properties." Frontiers in Pharmacology 11 (January 21, 2021). http://dx.doi.org/10.3389/fphar.2020.569800.

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Juglans mandshurica Maxim., also known as “Manchurian walnut” (Chinese) and “Onigurumi” (Japanese), is a medicinal plant widely distributed in Western and Central Asia, especially in China. It has been traditionally used to treat cancer, gastric ulcers, diarrhea, dysentery, dermatosis, uterine prolapse, and leukopenia. To date, more than 400 constituents including quinones (e.g. naphthoquinones, anthraquinones, naphthalenones, tetralones), phenolics, flavonoids, triterpenoids, coumarins, lignans, phenylpropanoids, diarylheptanoids, and steroids, were isolated and structurally identified from d

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