Navigation Links
Landscape tree disease from 12 wood decay fungi studied
Date:12/30/2010

STONEVILLE, MS Landscape trees, valued for their aesthetic nature and their environmental benefits, are becomingly increasingly valuable in urban environments. A single mature tree can add considerable value to commercial and residential properties. Conversely, tree mortality can result in significant economic losses. Urban trees must endure adverse growing conditions that reduce their structural strength and subject them to stresses, predisposing them to disease. One particularly devastating pathogen, wood-rotting fungi, can compromise the stability of urban trees, resulting in injuries to people and property damage from falling trees and limbs. Wood decay fungi are the primary and most common cause of failure in standing trees.

A study in HortScience investigated the in vitro development of decay caused by 12 major root-rot and trunk-rot fungi in sapwood extracted from nine ornamental and landscape tree species native to southern temperate forests in the Mississippi Delta region. Scientists Manuela Baietto and A. Dan Wilson compared the relative wood decay potential and host specificity of damage associated with these wood-rotting fungi, and determined the relative in vitro susceptibility or resistance of sapwood from each tree species to decay over 1-year and 2-year incubation periods.

Strains of Armillaria mellea, Ganoderma lucidum, and Heterobasidion annosum exhibited the highest decay potential in most tree species tested. According to the study, the order of fungi causing the greatest decay varied over time as a result of temporal changes in decay-rate curves. Relative wood durability or resistance to decay generally was greater in gymnosperm than in angiosperm wood types. Quercus nuttallii, Fraxinus pennsylvanica, and Quercus lyrata sustained the highest levels of decay by all fungi. Northern white cedar (Thuja occidentalis) sapwood was most resistant to decay by all rot-fungi tested, sustaining only limited weight loss after 1 and 2 years of decay, although sapwood of Pinus taeda, Liquidambar styraciflua, and Platanus occidentalis had relatively low levels of decay after 2 years.

Baietto and Wilson observed that the data from their study will be useful in making general assessments of the hazard status of individual urban tree, and can be combined with data from urban tree assessment surveys to predict future tree failures and estimate potential damage from falling tree parts. The information is useful for urban forestry professionals in developing individual tree inspection and maintenance schedules that help avoid personal and property damage resulting from structural failures of landscape trees.


'/>"/>

Contact: Michael W. Neff
mwneff@ashs.org
703-836-4606
American Society for Horticultural Science
Source:Eurekalert

Related biology news :

1. Himalaya -- Changing Landscapes photo exhibition draws attention to the impacts of climate change
2. Diverse landscapes are better: Policymakers urged to think broadly about biofuel crops
3. Traditional Dutch landscape under threat
4. Diverse landscapes are better: Policymakers urged to think broadly about biofuel crops
5. Landscape-scale treatment promising for slowing beetle spread
6. After mastodons and mammoths, a transformed landscape
7. Conservation from space: Landscape diversity helps to conserve insects
8. The effect of landscape position on biomass crop yield
9. Planting depth affects popular landscape tree
10. New hydrangea cultivars for landscape gardens
11. Santa Fe homeowners weigh in on landscape preferences
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:1/21/2017)... Research and Markets has announced the addition of the ... offering. ... global voice recognition biometrics market to grow at a CAGR of ... the present scenario and the growth prospects of the global voice ... report considers the revenue generated from the sales of voice recognition ...
(Date:1/19/2017)... PUNE, India , January 19, 2017 ... Sensor Market, Opportunities and Forecast, 2014 - 2022," the global biometric sensor ... of 9.6% from 2016 to 2022. In 2015, Asia-Pacific ... for both public and private sectors. Continue Reading ... ...
(Date:1/19/2017)... , Jan. 19, 2017 Sensory ... experience and security for consumer electronics, and ... processing systems and cybersecurity solutions, today announced a ... and financial institutions worldwide to bolster security of ... end-to-end secure user authentication platforms they offer, innerCore ...
Breaking Biology News(10 mins):
(Date:1/21/2017)... ... January 20, 2017 , ... ... to the healthcare industry ( http://www.gandlscientific.com ), has announced the opening of new ... clinical and scientific consultants and contractors. This is the latest step in G&L’s ...
(Date:1/21/2017)... ... January 20, 2017 , ... Nipro Corporation (Osaka, Japan) ... (JV) under which Nipro will receive exclusive marketing and sales rights for all non-OEM ... practices for hemodialysis patients in Japan, the new Nipro - Transonic JV is a ...
(Date:1/21/2017)... Wells, CA (PRWEB) , ... January 21, 2017 ... ... in our ongoing endeavors to bring to market a pioneering medical device for ... O’Rourke, has signed an engagement contract with Emergo, a global regulatory consultancy that ...
(Date:1/21/2017)... Jan. 20, 2017 Interpace Diagnostics Group, ... that provides clinically useful molecular diagnostic tests and ... into a securities purchase agreement with three  institutional ... of common stock in a registered direct offering.  ... agreed to sell to the same investors warrants ...
Breaking Biology Technology: