scholarly journals First Report of Psittacanthus angustifolius on Psidium guineense and Pinus tecunumanii in Honduras

Plant Disease ◽  
2001 ◽  
Vol 85 (10) ◽  
pp. 1120-1120 ◽  
Author(s):  
J. Melgar ◽  
M. Berrios ◽  
R. Mathiasen ◽  
B. Howell
Keyword(s):  
Central America ◽  
Southern Mexico ◽  
La Paz ◽  
First Report ◽  
Single Tree ◽  
Pinus Tecunumanii ◽  
Pinus Spp ◽  
Host Parasite ◽  
Common Parasite

The mistletoe Psittacanthus angustifolius Kuijt (Loranthaceae) is a common parasite of pines in Central America and southern Mexico (1,2). In August 2000, we observed this mistletoe parasitizing a wild guava tree, Psidium guineense Sw., ≈5 km north of Yamaranguila, Department Intibuca, Honduras, at an elevation of 1,800 m. Only one plant was found on a single tree, and wild guava is apparently a rare host for this mistletoe because we have not observed this host-parasite combination in other areas where Psidium guineense occurs. This is the first report of P. angustifolius on a plant other than Pinus spp. In November 2000, we observed this mistletoe parasitizing Pinus tecunumanii (Schw.) Eguiluz et Perry ≈4 km north of Opatoro, Department La Paz, Honduras, at an elevation of 1,700 m. Several pines were infected, but no trees had more than five mistletoe infections. To our knowledge, this is the first report of P. angustifolius on P. tecunumanii in Honduras, although it is known to occur on this host in Chiapas, Mexico. Specimens of P. angustifolius from these hosts have been deposited at the Herbario, Escuela Nacional de Ciencias Forestales, Siguatepeque, Honduras. References: (1) R. Mathiasen et al. Plant Dis. 84:203, 2000. (2) R. Mathiasen et al. Plant Dis. 84:808, 2000.

scholarly journals First Report of Arceuthobium hondurense and Sruthanthus deppeanus in Nicaragua

Plant Disease ◽  
2006 ◽  
Vol 90 (11) ◽  
pp. 1458-1458
Author(s):  
R. Mathiasen ◽  
A. Sediles ◽  
S. Sesnie
Keyword(s):  
Central America ◽  
New World ◽  
Plant Disease ◽  
Dwarf Mistletoe ◽  
Southern Mexico ◽  
First Report ◽  
Northern Arizona ◽  
Northern Arizona University ◽  
Pinus Tecunumanii ◽  
San Fernando

The Honduran dwarf mistletoe, Arceuthobium hondurense Hawksw. & Wiens (Viscaceae), is one of the rarest dwarf mistletoes known in Central America (1,2). It is only known from four general areas in Honduras, but has also been reported from three locations in southern Mexico (2,3). At one time, A. hondurense was thought to be in danger of extinction (1). During March 2006, we found three new populations of this rare dwarf mistletoe in the Cordillera Dipilto in northern Nicaragua (Department Nueva Segovia). One population was approximately 11 km northeast of San Fernando (13°44′55″N, 86°19′07″W; elevation 1,130 m), the second population was approximately 9 km north of Mozonte (13°44′09″N, 86°24′54″W; elevation 1,415 m), and the third population was approximately 6 km southwest of Depilto (13°42′51″N, 86°32′22″W; elevation 1,340 m). Honduran dwarf mistletoe was parasitizing Pinus tecunumanii Equiluz & J.P. Perry at each of these locations, and at the Mozonte population, it was also infecting P. oocarpa Schiede ex Schlecht. Only a few pines were infected at each of these localities and no pine mortality associated with dwarf mistletoe infection was observed. However, even lightly infected trees had large witches' brooms and some trees were severely broomed. These populations are 50 to 65 km southeast of the nearest population of Honduran dwarf mistletoe in Honduras and they represent the southern most populations of Arceuthobium spp. in the New World (1). The mistletoe, Struthanthus deppeanus (Cham. & Schlecht.) Bl. (Loranthaceae), also parasitizes pines in Central America and southern Mexico (3). We observed this mistletoe parasitizing P. tecunumanii at the San Fernando location described above, on P. oocarpa approximately 7 km north of Mozonte (13°43′57″N, 86°24′49″W; elevation 1,490 m), and on P. oocarpa approximately 3 km southwest of Dipilto (13°43′40″N, 86°31′56″W; elevation 1,170 m). Again, only a few pines were infected at each of these locations, and we did not observe pine mortality associated with infection by S. deppeanus. S. deppeanus does not cause the formation of witches' brooms on infected pines, but the mistletoe plants are often greater than 1 m long so they are easily observed. This mistletoe was most common southwest of Depilto. To our knowledge, this is the first report of A. hondurense and S. deppeanus in Nicaragua. Specimens of A. hondurense and S. deppeanus from Nicaragua have been deposited at the Deaver Herbarium, Northern Arizona University, Flagstaff (Accession Nos. 81561–81567). References: (1) F. Hawksworth and D. Wiens. Dwarf mistletoes: Biology, pathology, and systematics. USDA For. Serv. Agric. Handb. 709, 1996; (2) R. Mathiasen and J. Melgar, Plant Disease 90:685, 2006; (3) R. Mathiasen et al. Madrono 50:115, 2003.

scholarly journals First Report of Psittacanthus angustifolius on Pines in Mexico and Guatemala

Plant Disease ◽  
2000 ◽  
Vol 84 (7) ◽  
pp. 808-808 ◽  
Author(s):  
R. Mathiasen ◽  
C. Parks ◽  
J. Beatty ◽  
S. Sesnie
Keyword(s):  
New York ◽  
Botanical Garden ◽  
First Report ◽  
Northern Arizona ◽  
Northern Arizona University ◽  
Pinus Tecunumanii ◽  
New York Botanical Garden ◽  
Pinus Oocarpa ◽  
North And South ◽  
Common Parasite

The mistletoe Psittacanthus angustifolius Kuijt (Loranthaceae) is a common parasite of pines in Honduras (2). In March we observed this mistletoe parasitizing a pine that Farjon and Styles (1) have classified as Pinus tecunumanii Eguiluz & J. P. Perry 4 km south of Jitotol, Chiapas, Mexico. The taxonomy of this host in Chiapas is controversial as Perry (3) classifies the Chiapas populations of this pine as Pinus oocarpa var. ochoterenai Martinez. We also observed P. angustifolius on P. oocarpa Schiede 4 km north of Jitotol. In addition, we found this mistletoe parasitizing Pinus maximinoi H. E. Moore approximately 15 km west of Ocosingo, Chiapas. In Guatemala, we observed P. angustifolius on P. oocarpa at several locations north and south of La Cumbre, Department Baja Verapaz. This mistletoe appears to be less common in Chiapas and Guatemala than it is in Honduras. We did not observe this mistletoe damaging its pine hosts in Mexico or Guatemala. This is the first report of P. angustifolius in both Mexico and Guatemala and the first report of this mistletoe on Pinus tecunumanii (or Pinus oocarpa var. ochoterenai). Specimens of P. angustifolius from the above pine hosts have been deposited at the Deaver Herbarium, Northern Arizona University, Flagstaff. References: (1) A. Farjon and B. Styles. Pinus (Pinaceae), Flora Neotropica, Monogr. 75, New York Botanical Garden, 1997. (2) Mathiasen et al. Plant Dis. 84:203, 2000. (3) J. Perry. The Pines of Mexico and Central America, Timber Press, Portland, Oregon, 1991

Dendroctonus frontalis. [Distribution map].

2002 ◽  
Author(s):  
Keyword(s):  
North Carolina ◽  
South Carolina ◽  
North America ◽  
Central America ◽  
Geographical Distribution ◽  
District Of Columbia ◽  
Dendroctonus Frontalis ◽  
Distribution Map ◽  
Pinus Spp ◽  
New Distribution

Abstract A new distribution map is provided for Dendroctonus frontalis Zimmermann Coleoptera: Scolytidae Attacks Pinus spp. Information is given on the geographical distribution in ASIA, Israel, NORTH AMERICA, Mexico, USA, Alabama, Arizona, Arkansas, California, Delaware, District of Columbia, Florida, Georgia, Kentucky, Louisiana, Maryland, Mississippi, North Carolina, Oklahoma, Pennsylvania, South Carolina, Tennessee, Texas, Virginia, West Virginia, CENTRAL AMERICA & CARIBBEAN, Belize, E! Salvador, Guatemala, Honduras, Nicaragua.

Paradise Transplanted

2014 ◽  
Vol 4 (3) ◽  
pp. 86-94 ◽  
Author(s):  
Pierrette Hondagneu-Sotelo
Keyword(s):  
Los Angeles ◽  
Central America ◽  
Support Network ◽  
Informal Support ◽  
Community Garden ◽  
Southern Mexico ◽  
Informal Support Network

This article tells the story of a central Los Angeles community garden and the women, who came primarily from Southern Mexico and Central America, who had plots there. The garden fostered an informal support network for the women and families who used it, and a place to grow food and flowers common in their home communities but not found in Los Angeles. The essay then traces the upheaval the followed a local nonprofit’s takeover of, and investment in, the garden.

scholarly journals First Report of Psittacanthus macrantherus on Pinus devoniana and Quercus castanea in Mexico

Plant Disease ◽  
2006 ◽  
Vol 90 (11) ◽  
pp. 1461-1461 ◽  
Author(s):  
B. Howell ◽  
S. Kenaley ◽  
R. Mathiasen
Keyword(s):  
North American ◽  
First Report ◽  
Northern Arizona ◽  
Infected Tree ◽  
Northern Arizona University ◽  
Pinus Spp ◽  
Very High ◽  
Important Parasite

The mistletoe Psittacanthus macrantherus Eichl. (Loranthaceae) is an important parasite of pines (Pinus spp., Pinaceae) in Mexico (1). It has been reported to parasitize Pinus engelmannii Carr., P. herrerai Mart., P. lawsonii Roezl ex Gord. & Glend., P. lumholtzii Robins & Fern., P. oocarpa Schiede, and P. pseudostrobus Lindl. (1). During July 2005, we found this mistletoe parasitizing P. devoniana Lindl. and Quercus castanea Nee near Route 40 in Sinaloa, Mexico approximately 12 km west of El Palmito (23°30′N, 105°07′W, elevation 1,900 m). The mistletoe was common in P. devoniana, and some trees were severely infected (>10 plants per tree). However, no mortality associated with mistletoe infection in P. devoniana was observed. Only one infected tree of Q. castanea was observed in this area and it was not severely infected. We also observed this mistletoe on P. douglasiana Mart. along Route 40 west and east of El Palmito, but no specimens were collected because plants were very high in the crowns of the infected trees. To our knowledge, this is the first report of this mistletoe parasitizing P. devoniana, P. douglasiana, and Q. castanea (1). Specimens of Psittacanthus macrantherus from P. devoniana and Q. castenea have been deposited at the Deaver Herbarium (ASC), Northern Arizona University, Flagstaff (Accession Nos. 79534 and 79535). References: (1) B. Geils et al. Mistletoes of North American conifers. USDA For. Serv. Gen. Tech. Rep. RMRS-GTR-98, 2002.

scholarly journals First Report of Botryosphaeria dothidea, Diplodia seriata, and Neofusicoccum luteum Associated with Canker and Dieback of Grapevines in Tunisia

Plant Disease ◽  
2014 ◽  
Vol 98 (3) ◽  
pp. 420-420 ◽  
Author(s):  
S. Chebil ◽  
R. Fersi ◽  
A. Yakoub ◽  
S. Chenenaoui ◽  
M. Chattaoui ◽  
...  
Keyword(s):  
Morphological Characteristics ◽  
Aerial Mycelium ◽  
Its2 Region ◽  
Pathogenicity Test ◽  
Botryosphaeria Dothidea ◽  
Diplodia Seriata ◽  
First Report ◽  
Grapevine Dieback ◽  
Pinus Spp ◽  
Neofusicoccum Luteum

In 2011, common symptoms of grapevine dieback were frequently observed in 2- to 5-year-old table grape (Vitis vinifera L.) cvs. in four vineyards located in northern Tunisia. The symptoms included dead spur and cordons, shoot dieback, and sunken necrotic bark lesions, which progressed into the trunk resulting in the death of large sections of the vine. Longitudinal and transversal sections of cordons and spurs from symptomatic vines revealed brown wedge-shaped cankers of hard consistency. Twelve symptomatic samples from spur and cordons were collected, surface disinfected by dipping into 5% (v/v) sodium hypochlorite for 2 min, and small pieces from the edge of necrotic and healthy tissue were removed and plated onto potato dextrose agar (PDA) at 25°C in the dark. Based on colony and conidia morphological characteristics, isolates were divided in three species, named Diplodia seriata, Botryosphaeria dothidea, and Neofusicoccum luteum. D. seriata colonies were gray-brown with dense aerial mycelium producing brown cylindric to ellipsoid conidia rounded at both ends and averaged 22.4 × 11.7 μm (n = 50). B. dothidea colonies were initially white with abundant aerial mycelium, gradually becoming dark green olivaceous. Conidia were fusiform to fusiform elliptical with a subobtuse apex and averaged 24.8 × 4.7 μm (n = 50). N. luteum colonies were initially pale to colorless, gradually darkening with age and becoming gray to dark gray producing a yellow pigment that diffuses into the agar. Conidia were hyaline, thin-walled, aseptate, fusiform to fusiform elliptical, and averaged 19.8 × 5.5 μm (n = 50). Identity of the different taxa was confirmed by sequence analyses of the internal transcribed spacer (ITS1-5.8S-ITS2) region of the rDNA and part of the elongation factor 1-alpha (EF1-α) gene. BLAST analysis of sequences indicated that six isolates were identified as D. seriata (GenBank: AY259094, AY343353), one isolate as B. dothidea (AY236949, AY786319) and one isolate as N. luteum (AY259091, AY573217). Sequences were deposited in GenBank under accessions from KC178817 to KC178824 and from KF546829 to KF546836 for ITS region and EF1-α gene, respectively. A pathogenicity test was conducted on detached green shoots cv. Italia for the eight Botryosphaeriaceae isolates. Shoots were inoculated by placing a colonized agar plug (5 mm diameter) from the margin of a 7-day-old colony on fresh wound sites made with a sterilized scalpel. Each wound was covered with moisturized cotton and sealed with Parafilm. Control shoots were inoculated using non-colonized PDA plugs. After 6 weeks, discoloration of xylem and phloem and necrosis with average length of 38.8, 17.6, and 11.2 mm were observed from inoculated shoots with D. seriata, N. luteum, and B. dothidea, respectively, and all three fungi were re-isolated from necrotic tissue, satisfying Koch's postulates. Control shoots showed no symptoms of the disease and no fungus was re-isolated. In Tunisia, Botryosphaeria-related dieback was reported only on citrus tree caused by B. ribis (2), on Pinus spp. caused by D. pinea (4), on Quercus spp. caused by D. corticola (3), and on olive tree (Olea europea) caused by D. seriata (1). To our knowledge, this is the first report of D. seriata, B. dothidea, and N. luteum associated with grapevine dieback in Tunisia. References: (1) M. Chattaoui et al. Plant Dis. 96:905, 2012. (2) H. S. Fawcett. Calif. Citrogr. 16:208, 1931. (3) B. T. Linaldeddu et al. J. Plant Pathol. 91:234. 2009. (4) B. T. Linaldeddu et al. Phytopathol. Mediterr. 47:258, 2008.

Diplodia pinea. [Distribution map].

1969 ◽  
Author(s):  
Keyword(s):  
United States ◽  
South Africa ◽  
Central America ◽  
West Indies ◽  
Buenos Aires ◽  
Santa Fe ◽  
Distribution Map ◽  
Diplodia Pinea ◽  
Pinus Spp ◽  
New Distribution

Abstract A new distribution map is provided for Diplodia pinea (Desm.) Kickx. Hosts: Pine (Pinus spp.) and other Coniferae. Information is given on the geographical distribution in AFRICA, Kenya, Malawi, Mauritius, Mozambique, Rhodesia, South Africa, Tanzania, Uganda, ASIA, Japan, Malaysia, Thailand, AUSTRALASIA & OCEANIA, Australia, New Zealand, EUROPE, Austria, Belgium, England, France, Germany, Italy, Portugal, Romania, Spain, Sweden, NORTH AMERICA, Canada (Ontario), United States, CENTRAL AMERICA & WEST INDIES, Jamaica, SOUTH AMERICA, Argentina (Buenos Aires, Santa Fe), Brazil (Parana, Santa Catarina, Sao Paulo), Chile.

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