First Report of Septoria Spot on Bergamot

More than 95% of bergamot (Citrus bergamia Risso & Poit) essence production utilized in the international perfume industry comes from the coastal growing area in the Province of Reggio di Calabria in the Calabria Region of southern Italy. Fruit and leaf spots were observed on bergamot cv. Fantastico in some orchards during February and March 2001. Symptoms affected ≈20% of the fruits and resembled those caused by Septoria citri Pass. on lemon in the nearby Sicily Region (2). Symptoms on fruits were characterized by reddish-brown pits, 1 to 2 mm in diameter, often in proximity, and extending no deeper than the flavedo; or characterized by larger confluent brown spots, sunken and extending into the albedo. Leaf symptoms occurred on both sides of the blade and were characterized by irregular brown spots surrounded by a yellow halo. Spherical, dark-walled pycnidia were observed on brown spots on fruits. Pycnidia contained hyaline, nonseptate, or 1 to 3 septate, cylindrical conidia, rounded at the apex, measuring 8 to 18 × 1.5 to 2.0 μm (8 to 29 × 1.5 to 2.0 μm in pure culture), differing from the tapered conidia of S. citri. The fungus was subsequently identified as S. limonum Pass., a species first described in the 19th century on lemon in unheated glasshouses in northern Italy and later reported from other countries (3). It is still an open question whether S. limonum is distinct from S. citri. Previously, in fact, different species of Septoria from citrus have been considered synonyms of S. citri on the basis of isozyme electrophoretic phenotype (1). The fungus was isolated on artificial media from infected leaf and fruit tissues (pits and larger spots). Brown spot symptoms were reproduced by artificial inoculation of detached bergamot fruits. A spore suspension (1 × 106 spores per ml) of the fungus was sprayed on fruit wounded by a needle (1 mm in diameter) to a depth of 2 mm and washed in sterile water. After inoculation, the fruits were incubated 10 days at 22°C and 100% relative humidity. The fungus was reisolated from inoculated tissues. The damage caused by this disease appears to be more important on bergamot than on other citrus fruits since it affects oil-bearing tissue and consequently the production of essential oil. References: (1) M. R. Bonde et al. Phytopathology 81:517, 1991. (2) S. Grasso and R. La Rosa. Riv. Patol. Veg. 19:15, 1983. (3) L. J. Klotz. Color Handbook of Citrus Diseases, 4th ed. University of California, Division of Agricultural Sciences, Berkeley, 1973.

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Pestalotiopsis mangiferae. [Descriptions of Fungi and Bacteria].

IMI Descriptions of Fungi and Bacteria ◽

10.1079/dfb/20056400676 ◽

1980 ◽

Author(s):

J. E. M. Mordue

Keyword(s):

Hong Kong ◽

Dominican Republic ◽

Sierra Leone ◽

Geographical Distribution ◽

Leaf Spot ◽

Host Plants ◽

Solomon Islands ◽

Mangifera Indica ◽

Brown Spot ◽

Leaf Spots

Abstract A description is provided for Pestalotiopsis mangiferae. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: On Mangifera indica; also on Anacardium occidentale, Combretum decandrum, Eucalyptus spp., Mimusops spp., Vitis vinifera and many other unrelated host plants. DISEASE: Grey leaf spot of Mangifera indica. The spots vary in size from a few mm to several cm in length, are usually sharply delimited by a dark, raised border, and are silvery grey above and grey to brown below; leaf spots on other hosts are similar. Brown spot or rot of mango fruits is also known. GEOGRAPHICAL DISTRIBUTION: Ghana, Nigeria, Sierra Leone, Tanzania, Uganda, Zaire, Zambia; Bangladesh, Brunei, Burma, Hong Kong, India, Malaysia, Nepal, Sabah, Solomon Islands, Sri Lanka; Australia; Dominican Republic; Venezuela. TRANSMISSION: Inoculation studies with conidia and mycelium have shown P. mangiferae to be a weak parasite, capable of infecting young injured leaves, injured fruits, older uninjured leaves and healthy fruits if in contact with diseased tissue (35, 378; 40, 421). It has been isolated from soil, but the possibility of transmission through soil has not been investigated.

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Ideas and Perspectives: On the emission of amines from terrestrial vegetation in the context of atmospheric new particle formation

Biogeosciences Discussions ◽

10.5194/bgd-12-3211-2015 ◽

2015 ◽

Vol 12 (4) ◽

pp. 3211-3243

Author(s):

J. Sintermann ◽

A. Neftel

Keyword(s):

Particle Formation ◽

Direct Impact ◽

Terrestrial Vegetation ◽

New Particle Formation ◽

Vegetative Plant ◽

Agricultural Emissions ◽

Pollination Strategy ◽

Species Specific ◽

Open Question ◽

The 19Th Century

Abstract. In this article we summarise recent science, which shows how airborne amines, specifically methylamines (MAs), play a key role in atmospheric new particle formation (NPF) by stabilising small molecule clusters. Agricultural emissions are assumed to constitute the most important MA source, but given the short atmospheric residence time of MAs, they can hardly have a direct impact on NFP events observed in remote regions. This leads us to the presentation of existing knowledge focussing on natural vegetation-related MA sources. High MA contents as well as emissions by plants have already been described in the 19th century. Strong MA emissions predominantly occur during flowering as part of a pollination strategy. The behaviour is species specific, but examples of such species are common and widespread. In addition, vegetative plant tissue exhibiting high amounts of MAs might potentially lead to significant emissions, and the decomposition of organic material could constitute another source for airborne MAs. These mechanisms would provide sources, which could be crucial for the amine's role in NPF, especially in remote regions. Knowledge about vegetation-related amine emissions is, however, very limited and thus it is also an open question how Global Change and the intensified cycling of reactive nitrogen over the last 200 years have altered amine emissions from vegetation with a corresponding effect on NPF.

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Cochliobolus miyabeanus. [Descriptions of Fungi and Bacteria].

IMI Descriptions of Fungi and Bacteria ◽

10.1079/dfb/20056400302 ◽

1971 ◽

Author(s):

M. B. Ellis

Keyword(s):

Oryza Sativa ◽

Geographical Distribution ◽

Primary Infection ◽

French Polynesia ◽

Brown Spot ◽

Seed Infection ◽

Seedling Blight ◽

Late Afternoon ◽

Leaf Spots ◽

Cochliobolus Miyabeanus

Abstract A description is provided for Cochliobolus miyabeanus. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: On Oryza sativa and other species of Oryza. DISEASE: Brown spot and seedling blight of rice. Oval leaf spots up to 1 cm long, at first usually brown, sometimes purplish, later forming white to grey centres, spots may coalesce and leaves wither. Glumes may be spotted, becoming velvety with sporulation. Infected seed is shrivelled and discoloured; coleoptiles bear lesions which can also occur on the roots of seedlings. GEOGRAPHICAL DISTRIBUTION: Widespread (CMI Map 92, ed. 3, 1966). Records not yet mapped: Angola, Cambodia, Chad, France (S.), French Polynesia, Hong Kong, Laos, Malawi, Nepal, Rhodesia. TRANSMISSION: Seed infection is important (mycelium remaining viable for up to 3 yr) and is probably responsible for most of the primary infection in young crops (9: 556; 34: 104). Grain is directly attacked and kernels in the flowering and milk stages are more susceptible than those in the soft dough and mature stages (45, 2834; 46, 317). Conidia are air-dispersed showing a diurnal periodicity with a max. in the late afternoon (43, 1017; 48, 3486).

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Ancient Greek Terracotta Sculpture

10.1093/obo/9780195389661-0372 ◽

2022 ◽

Keyword(s):

Southern Italy ◽

Hellenistic Period ◽

Greek Life ◽

Ancient Greek ◽

Monumental Sculpture ◽

First Millennium ◽

Terracotta Figurines ◽

The 19Th Century ◽

Greek World ◽

Material Form

The phrase “terracotta sculpture” refers to all figurative representations in fired clay produced in Greece and in the Greek world during the first millennium bce, (from the Geometric period to the end of the Hellenistic period), whatever their size (figurine, statuette, or statue), whatever their manufacturing technique (modeling, molding, mixed), whatever their material form (in-the-round, relief, etc.), whatever their representation (anthropomorphic, zoomorphic [real or imaginary], diverse objects), and whatever the limits of their representation: full figure (figurines, statuettes, groups), truncated or abbreviated representations, including protomai, masks, busts, half figures, and anatomical representations, among others. All these objects, with the possible exception of large statues, were the products of artisans who were referred to in ancient texts as “coroplasts,” or modelers of images in clay. Because of this, the term “coroplasty,” or “coroplathy,” has been used to refer to this craft, but also increasingly to all of its products, large and small, while research on this material falls under the rubric of coroplastic studies. Greek terracottas were known to antiquarians from the mid-17th century onward from archaeological explorations in both sanctuary and funerary sites, especially in southern Italy and Sicily. Yet serious scholarly interest in these important representatives of Greek sculpture developed only in the last quarter of the 19th century, when terracotta figurines of the Hellenistic period were unearthed from the cemeteries of Tanagra in Boeotia in the 1870s and Myrina in Asia Minor in the 1880s. These immediately entered the antiquities markets, where their cosmopolitan, secular imagery had a great appeal for collectors and fueled scholarly interest and debate. At the same time, sanctuary deposits containing terracottas also began to be explored, but scholarly attention privileged funerary terracottas because of their better state of preservation. For most of the 20th century, the study of figurative terracottas basically was an art-historical exercise based in iconography and style that remained in the shadow of monumental sculpture. It is only in the last four decades or so that coroplastic studies has developed into an autonomous field of research, with approaches specific to the discipline that consider modalities of production, as well as the religious, social, political, and economic roles that terracottas played in ancient Greek life by means of broad sociological and anthropological approaches. Consequently, this bibliography mainly comprises publications of the last forty years, although old titles that are still essential for research are also included.

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Critical-point models to relate yield and disease intensity of the multiple pathosystem in rice leaf spots disease

Ciência Rural ◽

10.1590/0103-8478cr20150310 ◽

2015 ◽

Vol 46 (1) ◽

pp. 7-12

Author(s):

Luiz Carlos Bordin ◽

Ricardo Trezi Casa ◽

Leandro Luiz Marcuzzo ◽

Erlei Melo Reis ◽

André Gheller ◽

...

Keyword(s):

Grain Yield ◽

Critical Point ◽

Damage Threshold ◽

Brown Spot ◽

Simultaneous Occurrence ◽

Economic Damage ◽

Damage Functions ◽

Irrigated Rice ◽

Leaf Spots ◽

Damage Coefficient

ABSTRACT: The occurrence of leaf spots in irrigated rice can reduce the yield and compromise the quality of the grain. However it is unknown the economic damage threshold (EDT) that these spots cause the yield of crop. The objective of this study was to obtain damage functions for models of critical, to relate damage by simultaneous occurrence of blast, brown spot and scald spot with grain yield harvests in 2011/12 and 2012/2013, in Rio do Oeste, Santa Catarina State, Brazil. Gradient of diseases intensity was generated by number of applications and fungicides rates. Design was a randomized block with four replications and six treatments consisting of mixing fungicide applications of triazole (difenoconazole) and strobilurin (azoxystrobin). In 2011/12 and 2012/13 growing season were made two and three tests respectively with the same experiment. Before each application it was determined the incidence and severity of fungal diseases. The critical point models were obtained by linear regression between grain yield and incidence (I) and severity (S). In 2011/12 the functions were not significant at the beginning of tillering and 2012/2013 harvest resulted in R=13.404-92.98I and R=10.685-3.804S. Respectively in each harvest resulted in tillering (R=9.141-103.6I; R=7.605-1.538 and R=8.864-73.91I; R=7.202-77S), panicle initiation (R=9.432-188.5I; R=7.,038-1.466S and R=10.176-87.33I; R=8.258-533.55S), booting (R=7.044-71.78I; R=6.881-1.296S and R=9.993-71.74I; R=8.846-763.83S), flowering (R=7.447-82.29I; R=8.731-1.398S and R=8.347-54.36I; R=7.338-681.52S) and milky grain (R=10.143-80.5I; R=7.522-1.402S and R=8.661-60.063I; R=9.754-1.465S). The generated functions allow getting the damage coefficient for use in the calculation of EDT in multiple pathossystem leaf spots in irrigated rice.

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Macroseismic characteristics of the main earthquakes of the 19th century in Southern Italy: a review

Tectonophysics ◽

10.1016/0040-1951(91)90205-7 ◽

1991 ◽

Vol 193 (1-3) ◽

pp. 241-245 ◽

Cited By ~ 2

Author(s):

A Marturano ◽

E Esposito ◽

S Porfido ◽

G Luongo

Keyword(s):

19Th Century ◽

Southern Italy ◽

The 19Th Century

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First Report of Stem and Foliar Blight of Sunflower Caused by Alternariaster helianthi in Louisiana

Plant Disease ◽

10.1094/pdis-01-12-0107-pdn ◽

2012 ◽

Vol 96 (5) ◽

pp. 761-761 ◽

Cited By ~ 1

Author(s):

R. Singh ◽

D. M. Ferrin

Keyword(s):

Disease Incidence ◽

Fluorescent Light ◽

Infected Leaf ◽

Stem Tissue ◽

First Report ◽

Foliar Blight ◽

Leaf Spots ◽

Plastic Bags ◽

Alternaria Helianthi ◽

Stem Lesions

During the fall of 2009, sunflower (Helianthus annuus L.) planted at the LSU AgCenter's Burden Center in Baton Rouge, LA exhibited severe stem and foliar blight symptoms. Symptoms on stems and petioles included elongated, slightly sunken lesions with dark brown margins. Leaf symptoms included irregular to circular, dark brown lesions with white centers and surrounded by a yellow halo. Several spots often coalesced to form large, blighted areas, and severely affected leaves turned yellow, followed by defoliation. The corolla and calyx exhibited similar lesions except for the yellow halo. Disease developed rapidly and the whole (100% disease incidence) field was blighted within a week following a rain (4 mm). Infected leaf and stem tissue was surface disinfested and plated on ¼-strength potato dextrose agar (PDA). Both leaf and stem tissue consistently produced dark olivaceous-to-black fungal colonies at room temperature under 12 h of fluorescent light per day. Conidia were 53 to 128 × 10 to 26 μm, borne singly on the conidiophores, hyaline to dark olivaceous, cylindrical, rounded at both ends, and with 6 to 10 transverse and 0 to 2 longitudinal septa. Conidiophores were single, unbranched, septate, hyaline to dark olivaceous, and measured 77 to 128 × 7 to 13 μm. Morphologically, the fungus was identified as Alternariaster helianthi (Hansf.) E.G. Simmons (= Alternaria helianthi [Hansf.] Tubaki & Nishih) (1). A single-spore isolate (PDC-4291) was obtained from the original culture and DNA from this isolate was extracted with a DNeasy Plant Mini Kit (Qiagen Inc., Valencia, CA). Primers ITS1 and ITS4 were used to amplify and sequence the internal transcribed spacer regions 1 and 2, and NCBI blast analysis of the 552-bp sequence (GenBank Accession No. JN208925) resulted in 100% homology with Alternaria helianthi isolated from sunflower infected with leaf spot and blight disease in India (GenBank Accession No. DQ156343). Pathogenicity was determined by inoculating 20 potted sunflower plants (Full Sun Improved TD, Fred C. Gloeckner and Company, Inc., Harrison, NY) with conidia from a 2-week-old culture of isolate PDC-4291. Each plant was sprayed with 25 ml of suspension containing 106 conidia/ml. Twenty control plants were sprayed with 25 ml of sterile distilled water. Inoculated and control plants were covered with plastic bags and maintained in a greenhouse at 28 ± 2°C. Plastic bags were removed 72 h after inoculation. Leaf spots similar to the original symptoms appeared on all 20 inoculated plants 5 days after inoculation. A few stem lesions were observed on 13 plants. Two weeks after inoculation, infected leaves turned yellow and blighted. Alternariaster helianthi (= Alternaria helianthi) was reisolated from the leaf spots and stem lesions. No symptoms developed on any of the 20 control plants. On the basis of morphology and sequence data, this pathogen was identified as A. helianthi, and to our knowledge, this is the first report of sunflower stem and foliar blight caused by A. helianthi in Louisiana. In Louisiana, sunflower is a popular ornamental that is grown in landscapes and gardens and by commercial flower growers who grow it for cut flower arrangements. Louisiana's hot, humid weather is ideal for disease development, which may discourage gardeners and commercial growers from planting sunflower. Reference: (1) E. G. Simmons. Alternaria: An Identification Manual. CBS Fungal Biodiversity Center, Utrecht, the Netherlands, 2007.

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First Report of Zonate Leaf Spot Caused by Hinomyces moricola on Japanese Hop in Korea

Plant Disease ◽

10.1094/pdis-01-13-0021-pdn ◽

2013 ◽

Vol 97 (8) ◽

pp. 1117-1117 ◽

Cited By ~ 1

Author(s):

S. E. Cho ◽

J. H. Park ◽

S. H. Hong ◽

H. D. Shin

Keyword(s):

Its Region ◽

The United States ◽

Infected Leaf ◽

Invasive Weed ◽

Voucher Specimen ◽

First Report ◽

Leaf Spots ◽

Initial Symptoms ◽

Wide Range ◽

Humulus Japonicus

Japanese hop (Humulus japonicus Siebold & Zucc. = H. scandens (Lour.) Merr.), native to East Asia, is an annual, climbing or trailing vine. The vines can spread to cover large areas of open ground or low vegetation, eventually blanketing the land and vegetation. Pollen of H. japonicus is allergenic, and this species is considered as one of the important causes of pollinosis in Korea and China. It is a notorious invasive weed in the United States and also in France, Hungary, and Italy (1). In September 2012, zonate leaf spots were observed on Japanese hops growing in wetlands in Yeongdong County of Korea. A voucher specimen was preserved in the Korea University Herbarium (KUS-F26901). Initial symptoms included grayish-green to grayish-brown spots without border lines. As the lesions enlarged, they coalesced, leading to leaf blight. Sporophores on the leaf lesions were dominantly hypophyllous, rarely epiphyllous, solitary, erect, easily detachable, and as long as 700 μm. The upper portion of the sporophores consisted of a pyramidal head was ventricose, 320 to 520 μm long and 110 to 150 μm wide. The fungus was isolated from leaf lesions and maintained on potato dextrose agar (PDA). Sclerotia were produced on PDA after 4 to 5 weeks at 18°C without light, but conidia were not observed in culture. These morphological and cultural characteristics were consistent with those of Hinomyces moricola (I. Hino) Narumi-Saito & Y. Harada (= Cristulariella moricola (I. Hino) Redhead) (3,4). An isolate was preserved in the Korean Agricultural Culture Collection (Accession No. KACC46955). Genomic DNA was extracted using the DNeasy Plant Mini DNA Extraction Kit (Qiagen Inc., Valencia, CA). The complete internal transcribed spacer (ITS) region of rDNA was amplified with the primers ITS1/ITS4 and sequenced. The resulting sequence of 452 bp was deposited in GenBank (Accession No. KC460209). A BLAST search in GenBank revealed that the sequence showed an exact match with those of C. moricola (JQ036181 ex Acer negundo and JQ036182 ex Glycine max). To determine the pathogenicity of the fungus, according to the procedure of Cho et al. (2), sporophores with the pyramidal head were carefully detached from a lesion on the naturally infected leaf using a needle. Each sporophore was transferred individually onto five places of four detached healthy leaves. The leaves were placed in dew chambers and incubated at 16°C. Symptoms were observed after 2 days on all inoculated leaves. A number of sporophores and immature sclerotia which were morphologically identical to the ones observed in the field were formed on the abaxial surface of the leaf 2 weeks after inoculation. The pathogen was reisolated from lesions on the inoculated leaves, confirming Koch's postulates. No symptoms were observed on the control leaves kept in humid chambers for 2 weeks. H. moricola was known to cause zonate leaf spots and defoliation on a wide range of woody and annual plants (3). To the best of our knowledge, this is the first report of Hinomyces infection on Japanese hops in Korea. References: (1) Anonymous. Humulus japonicus (Cannabaceae): Japanese hop. Eur. Medit. Plant Prot. Org. (EPPO). 2012. (2) S. E. Cho et al. Plant Dis. 96:906, 2012. (3) D. F. Farr and A. Y. Rossman. Fungal Databases. Syst. Mycol. Microbiol. Lab., Online publication, ARS, USDA, Retrieved December 8, 2012. (4) S. A. Redhead. Can. J. Bot. 53:700, 1975.

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The peel essential oil composition of bergamot fruit (Citrus bergamia, Risso) of Reggio Calabria (Italy): a review.

Emirates Journal of Food and Agriculture ◽

10.9755/ejfa.2020.v32.i11.2197 ◽

2020 ◽

pp. 835

Author(s):

Giuseppina Gioffrè ◽

Domenica Ursino ◽

Maria Laura Concetta Labate ◽

Angelo Maria Giuffrè

Keyword(s):

Essential Oil ◽

Climate Changes ◽

Southern Italy ◽

Geographical Area ◽

Essential Oil Composition ◽

Volatile Fraction ◽

Tyrrhenian Sea ◽

Oil Composition ◽

Modern Analytical ◽

Citrus Bergamia

Bergamot (Citrus bergamia, Risso) grows exclusively in the province of Reggio Calabria (Southern Italy). Most part of this territory lies on by the Ionian or the Tyrrhenian sea, with over 700 kilometers of coastline, it has one of the highest values of heliophany in Italy and it is protected, from the Northern winds, by the Aspromonte mountain massif. Most part of the bergamot cultivation area is located between Scilla (West) and Monasterace (East) in a coastal strip with a width up to 12 km from the coast. Bergamot fruit is produced between November and March in relation to the geographical area. Over the last decades, environmental climate changes occurred also in this area. This phenomenon, together with new applied industrial processes may have influenced the bergamot essential oil composition. In addition, the modern analytical apparatus gives more detailed information. The aim of this review is to describe the evolution of studies on the volatile fraction of the bergamot peel essential oil over the years.

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First Report of Leaf Spot Caused by Alternaria alternata on Kiwifruit in Italy

Plant Disease ◽

10.1094/pdis.1999.83.5.487d ◽

1999 ◽

Vol 83 (5) ◽

pp. 487-487 ◽

Cited By ~ 3

Author(s):

L. Corazza ◽

L. Luongo ◽

M. Parisi

Keyword(s):

New Zealand ◽

Alternaria Alternata ◽

Leaf Spot ◽

Southern Italy ◽

Morphological Characteristics ◽

Potato Dextrose Agar ◽

First Report ◽

Leaf Spots ◽

Detached Leaves ◽

Pathogenicity Tests

A leaf spot of kiwifruit (Actinidia deliciosa (A. Chev.) C. F. Liang & A. R. Ferg.) leaves was recently observed on plants of the cultivar Hayward in an orchard near Salerno, in southern Italy. The affected plants showed early severe defoliation. The fungus isolated from the infected leaves was identified as Alternaria alternata (Fr.:Fr.) Keissl., based on conidial morphological characteristics. Pathogenicity tests were made by inoculating detached leaves of male pollinator cultivar Tomuri and the female cultivars Hayward and Bruno with a 7-mm disk taken from actively growing cultures of the fungus on potato dextrose agar (PDA). After 14 days, necrotic leaf spots developed and A. alternata was consistently isolated from the inoculated leaves. A. alternata has been observed as a pathogen on leaves and fruits in New Zealand. In the Mediterranean, it has been reported in Israel (2) and in the island of Crete (1). This is the first report of Alternaria leaf spot on kiwifruit in Italy. References: (1) V. A. Bourbos and M. T. Skoudridakis. Petria 7:111, 1997. (2) A. Sive and D. Resnizky. Alon Hanotea 41:409, 1987.

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