In 2017, at the foot of Tlaloc volcano, occurred largest forest fire in State Mexico (2500 ha), with surface and crown (canopy) phases, on plantations various species types vegetation. Studies effects fires trees serve to define mortality whether or not restoration will be required an affected area. The hypothesis was: greater intensity severity smaller size trees, probability mortality. object...

Athrotaxis cupressoides is an iconic Tasmanian palaeoendemic conifer that vulnerable to fire. A survey of three populations burnt by severe fire in 2016, conducted 1 year post-fire, found 33% stems were still alive, with many surviving suffering some canopy scorch. We re-surveyed these quantify delayed mortality, resprouting, and presence juveniles, determine whether impacts can be reliably ass...

Warmer and drier conditions in temperate regions are increasing the length of wildfire season. Given greater fire frequency extent burned areas under climate warming, focus has been placed on predicting post-fire tree mortality as a crucial component sustainable forest management. This study evaluates potential logistic regression models to predict Korean red pine (Pinus densiflora) stands, we ...

Interactions between rainforest plants and fire occur when fires encroach into pioneers colonise fire-prone open forests. Although numerous studies show that many survive by resprouting postfire seedling recruitment, data is lacking for several major Australian types. In this study, we examine fire-resilience traits among 228 taxa of woody in four classes (subtropical, warm temperate, dry litto...

California black oak, Quercus kelloggii, plays an important role in the lifeways of many Indigenous tribes throughout California. Native peoples tend oaks using traditional ecological knowledge (TEK) to encourage development and proliferation specimen oaks. These mature, large, full crowned trees provide a disproportionate amount ecosystem services, including acorns habitat, when compa...

Plant virus coat proteins (CPs) play a fundamental role in protection of genomic RNAs, virion assembly, and viral movement. Although phosphorylation of several CPs during virus infection have been reported, little information is available about CP phosphorylation of the spherical RNA plant viruses. Here, we demonstrate that the CP of Beet black scorch virus (BBSV), a member of the genus Necrovi...

Xylella fastidiosa (Xf) causes wilt disease in plants and is responsible for major economic and crop losses globally. Owing to the public importance of this phytopathogen we embarked on a comparative analysis of the complete genome of Xf pv citrus and the partial genomes of two recently sequenced strains of this species: Xf pv almond and Xf pv oleander, which cause leaf scorch in almond and ole...

Using a modified multilocus sequence typing (MLST) scheme for the bacterial plant pathogen Xylella fastidiosa based on the same seven housekeeping genes employed in a previously published MLST, we studied the genetic diversity of two subspecies, X. fastidiosa subsp. fastidiosa and X. fastidiosa subsp. sandyi, which cause Pierce's disease and oleander leaf scorch, respectively. Typing of 85 U.S....

Co-infection of none-coding satellite RNAs (sat-RNAs) usually inhibits replication and attenuates disease symptoms of helper viruses. However, we find that the sat-RNA of Beet black scorch virus (BBSV) and low temperature (18°C) additively enhance the systemic infection of BBSV in Nicotiana benthamiana. Northern blotting hybridization revealed a relatively reduced accumulation of BBSV-derived s...

Title of Document: Chemotherapeutic Treatment Options to Manage Xylella fastidiosa in Shade Trees Darren DeStefano Master of Natural Resource Sciences 2005 Directed By: Associate Professor Joseph Sullivan Natural Resource Sciences and Landscape Architecture Xylella fastidiosa is a fastidious, xylem-limited, broad spectrum, bacterial plant pathogen native to the Americas, causing substantial eco...