Host range and distribution of the phytoplasma causing Arizona ash decline

Jerald S. Bricker, Jean C. Stutz

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Ash decline (AD), caused by a phytoplasma, is a progressive dieback disease previously reported in Fraxinus velutina. The host range and distribution of AD is discussed based on samples collected from ash trees sampled from across the state of Arizona, U.S., including both wild-type F. velutina in riparian areas and F. velutina cv. Modesto, F. velutina cv. Rio Grande, and F. uhdei in landscaped areas. The results of the statewide survey indicate that AD is found in native and cultivated ash trees, with F. velutina cv. Modesto exhibiting the highest (100%) level of disease in the Phoenix metropolitan area. Wild-type F. velutina and F. velutina cv. Rio Grande also exhibited AD symptoms but with lower frequency and severity. Fraxinus uhdei did not exhibit symptoms of AD. Phytoplasma infection was detected in all tree types of F. velutina trees using DAPI staining and polymerase chain reaction (PCR) but was not detected in F. uhdei. Higher frequency of phytoplasma infection was detected in tree canopies versus roots in contrast to previous results reported in white ash. PCR was found to be more efficient at detecting the low-titer infection levels typical of F. velutina in comparison to DAPI staining.

Original languageEnglish (US)
Pages (from-to)257-262
Number of pages6
JournalJournal of Arboriculture
Volume31
Issue number5
StatePublished - Sep 2005

Fingerprint

Fraxinus velutina
phytoplasma
host range
Phytoplasma
ash
Fraxinus uhdei
phytoplasmal diseases
Fraxinus
polymerase chain reaction
signs and symptoms (plants)
Fraxinus americana
dieback
distribution
riparian areas
metropolitan area
canopy

Keywords

  • Ash yellows
  • Fraxinus
  • Fraxinus uhdei
  • Fraxinus velutina
  • Host specificity
  • Shamal ash
  • Velvet ash

ASJC Scopus subject areas

  • Ecology
  • Forestry

Cite this

Host range and distribution of the phytoplasma causing Arizona ash decline. / Bricker, Jerald S.; Stutz, Jean C.

In: Journal of Arboriculture, Vol. 31, No. 5, 09.2005, p. 257-262.

Research output: Contribution to journalArticle

Bricker, Jerald S. ; Stutz, Jean C. / Host range and distribution of the phytoplasma causing Arizona ash decline. In: Journal of Arboriculture. 2005 ; Vol. 31, No. 5. pp. 257-262.
@article{865729b812ba4bc09dce3e55a6e9ed9f,
title = "Host range and distribution of the phytoplasma causing Arizona ash decline",
abstract = "Ash decline (AD), caused by a phytoplasma, is a progressive dieback disease previously reported in Fraxinus velutina. The host range and distribution of AD is discussed based on samples collected from ash trees sampled from across the state of Arizona, U.S., including both wild-type F. velutina in riparian areas and F. velutina cv. Modesto, F. velutina cv. Rio Grande, and F. uhdei in landscaped areas. The results of the statewide survey indicate that AD is found in native and cultivated ash trees, with F. velutina cv. Modesto exhibiting the highest (100{\%}) level of disease in the Phoenix metropolitan area. Wild-type F. velutina and F. velutina cv. Rio Grande also exhibited AD symptoms but with lower frequency and severity. Fraxinus uhdei did not exhibit symptoms of AD. Phytoplasma infection was detected in all tree types of F. velutina trees using DAPI staining and polymerase chain reaction (PCR) but was not detected in F. uhdei. Higher frequency of phytoplasma infection was detected in tree canopies versus roots in contrast to previous results reported in white ash. PCR was found to be more efficient at detecting the low-titer infection levels typical of F. velutina in comparison to DAPI staining.",
keywords = "Ash yellows, Fraxinus, Fraxinus uhdei, Fraxinus velutina, Host specificity, Shamal ash, Velvet ash",
author = "Bricker, {Jerald S.} and Stutz, {Jean C.}",
year = "2005",
month = "9",
language = "English (US)",
volume = "31",
pages = "257--262",
journal = "Arboriculture and Urban Forestry",
issn = "1935-5297",
publisher = "International Society of Arboriculture",
number = "5",

}

TY - JOUR

T1 - Host range and distribution of the phytoplasma causing Arizona ash decline

AU - Bricker, Jerald S.

AU - Stutz, Jean C.

PY - 2005/9

Y1 - 2005/9

N2 - Ash decline (AD), caused by a phytoplasma, is a progressive dieback disease previously reported in Fraxinus velutina. The host range and distribution of AD is discussed based on samples collected from ash trees sampled from across the state of Arizona, U.S., including both wild-type F. velutina in riparian areas and F. velutina cv. Modesto, F. velutina cv. Rio Grande, and F. uhdei in landscaped areas. The results of the statewide survey indicate that AD is found in native and cultivated ash trees, with F. velutina cv. Modesto exhibiting the highest (100%) level of disease in the Phoenix metropolitan area. Wild-type F. velutina and F. velutina cv. Rio Grande also exhibited AD symptoms but with lower frequency and severity. Fraxinus uhdei did not exhibit symptoms of AD. Phytoplasma infection was detected in all tree types of F. velutina trees using DAPI staining and polymerase chain reaction (PCR) but was not detected in F. uhdei. Higher frequency of phytoplasma infection was detected in tree canopies versus roots in contrast to previous results reported in white ash. PCR was found to be more efficient at detecting the low-titer infection levels typical of F. velutina in comparison to DAPI staining.

AB - Ash decline (AD), caused by a phytoplasma, is a progressive dieback disease previously reported in Fraxinus velutina. The host range and distribution of AD is discussed based on samples collected from ash trees sampled from across the state of Arizona, U.S., including both wild-type F. velutina in riparian areas and F. velutina cv. Modesto, F. velutina cv. Rio Grande, and F. uhdei in landscaped areas. The results of the statewide survey indicate that AD is found in native and cultivated ash trees, with F. velutina cv. Modesto exhibiting the highest (100%) level of disease in the Phoenix metropolitan area. Wild-type F. velutina and F. velutina cv. Rio Grande also exhibited AD symptoms but with lower frequency and severity. Fraxinus uhdei did not exhibit symptoms of AD. Phytoplasma infection was detected in all tree types of F. velutina trees using DAPI staining and polymerase chain reaction (PCR) but was not detected in F. uhdei. Higher frequency of phytoplasma infection was detected in tree canopies versus roots in contrast to previous results reported in white ash. PCR was found to be more efficient at detecting the low-titer infection levels typical of F. velutina in comparison to DAPI staining.

KW - Ash yellows

KW - Fraxinus

KW - Fraxinus uhdei

KW - Fraxinus velutina

KW - Host specificity

KW - Shamal ash

KW - Velvet ash

UR - http://www.scopus.com/inward/record.url?scp=24944455775&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=24944455775&partnerID=8YFLogxK

M3 - Article

VL - 31

SP - 257

EP - 262

JO - Arboriculture and Urban Forestry

JF - Arboriculture and Urban Forestry

SN - 1935-5297

IS - 5

ER -