W. Luo
Food and Environment Research Agency
22Publications
9H-index
325Citations
Publications 22
Newest
Published on Oct 1, 2018in Phytopathology 3.04
Mark E. Hilf19
Estimated H-index: 19
,
W. Luo9
Estimated H-index: 9
‘Candidatus Liberibacter asiaticus’ is a phloem-colonizing intracellular bacterial pathogen of citrus associated with the disease huanglongbing. A study of patterns of colonization and bacterial population growth in new growth of different citrus types was conducted by pruning infected citron, sweet orange, sour orange, mandarin, citrange, and Citrus macrophylla trees to force the growth of axillary and adventitious shoots. The first three leaves on newly emerged shoots were collected at 30, 60,...
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Published on Sep 27, 2017in Horticulture research 3.37
Melissa M Doud1
Estimated H-index: 1
,
Yungsheng Wang1
Estimated H-index: 1
+ 7 AuthorsYongping Duan20
Estimated H-index: 20
Simply exposing Huanglongbing-affected citrus trees to solar-generated high temperatures using plastic greenhouses revitalized them. A destructive bacterial disease of citrus trees, Huanglongbing is spreading globally and threatening the multibillion-dollar citrus industry in the US. No effective way has been found to treat diseased trees in the field. Now, Yongping Duan of United States Department of Agriculture and co-workers have discovered that many diseased trees exhibited vigorous new grow...
3 Citations Source Cite
Published on Jun 1, 2016in Plant Disease 2.94
Greg McCollum10
Estimated H-index: 10
,
Mark E. Hilf19
Estimated H-index: 19
+ 2 AuthorsTim R. Gottwald31
Estimated H-index: 31
Huanglongbing (HLB) disease is the most serious threat to citrus production worldwide and, in the last decade, has devastated the Florida citrus industry. In the United States, HLB is associated with the phloem-limited α-proteobacterium ‘Candidatus Liberibacter asiaticus’ and its insect vector, the Asian citrus psyllid (ACP; Diaphorina citri). Significant effort is being put forth to develop novel citrus germplasm that has a lower propensity to succumb to HLB than do currently available varietie...
4 Citations Source Cite
Published on Jan 1, 2014in Journal of Citrus Pathology
W. Luo9
Estimated H-index: 9
,
T. R. Gottwald7
Estimated H-index: 7
+ 1 AuthorsMike Irey9
Estimated H-index: 9
Invasive plant diseases can have devastating consequences on the local plant populations, in both agricultural and natural landscapes. Knowledge of the spatial patterns of pathogen spread can be used to guide more time- and cost-effective disease management strategies. Based on disease dispersal principles and consideration of host pattern, an improved plant disease epidemiological model was developed and tested for plant disease mapping. The model is able to characterize the disease dispersal g...
Published on Jan 1, 2014in Journal of Citrus Pathology
T. R. Gottwald7
Estimated H-index: 7
,
W. Luo9
Estimated H-index: 9
+ 1 AuthorsS. Parnell
The USDA, APHIS, PPQ has been conducting a risk-based multi-pest survey (MPS) for the past two years. The initial 6 statewide survey cycles were conducted on a 6 week basis, whereas the subsequent 20 cycles have been conducted on a 3-week basis. HLB and ACP are the two main pests addressed by the MPS but other citrus pests and diseases, i.e., Asiatic Citrus Canker (ACC), Citrus Leprosis Virus (CLiV), Citrus Black Spot (CBS) and Citrus Variegated Chlorosis (CVC) were also given lesser emphasis du...
Published on Jan 1, 2014in Journal of Citrus Pathology
T. R. Gottwald7
Estimated H-index: 7
,
W. Luo9
Estimated H-index: 9
,
N. McRoberts17
Estimated H-index: 17
The recent discoveries of HLB in the Los Angeles Basin and the Rio Grande Valley of Texas underscore the imminent danger of HLB spread in these two States and the urgent need for highly sensitive survey methods for early detection of new residential infections of HLB combined with rapid intervention to contain and eliminate further spread. The Arizona citrus industry is also at considerable risk due to the proximity to the Mexican border and continued immigration of ACP from Mexico. The 2008 eco...
5 Citations
Published on Jan 1, 2014in Journal of Citrus Pathology
W. Luo9
Estimated H-index: 9
,
D. J. Anco + 1 AuthorsMike Irey9
Estimated H-index: 9
Huanglongbing (HLB), spread by a psyllid vector, is globally considered a major threat to commercial and sustainable citrus production. Better understanding of the vector-mediated patterns of HLB spread is essential to inform and maximize disease management. From previous studies, edge effects are a significant characteristic of the HLB pathosystem and have been observed predominately in larger plantings. In this study, we investigated 1) the impact of different edge classes and orientations, 2)...
Published on May 15, 2013in Insects
Andrew G. S. Cuthbertson18
Estimated H-index: 18
,
James J. Mathers8
Estimated H-index: 8
+ 4 AuthorsPhil Northing11
Estimated H-index: 11
Tomato leafminer Tuta absoluta (Meyrick) is a major pest of tomato plants in South America. It was first recorded in the UK in 2009 where it has been subjected to eradication policies. The current work outlines T. absoluta development under various UK glasshouse temperatures. The optimum temperature for Tuta development ranged from 19–23 °C. At 19 °C, there was 52% survival of T. absoluta from egg to adult. As temperature increased (23 °C and above) development time of the moth would appear to d...
26 Citations Source Cite
Tim R. Gottwald4
Estimated H-index: 4
(United States Department of Agriculture),
Eric Wierenga1
Estimated H-index: 1
(Canadian Food Inspection Agency)
+ 1 AuthorsStephen Parnell12
Estimated H-index: 12
(Rothamsted Research)
AbstractThe successful 10-year eradication programme for Plum pox virus (PPV) in Pennsylvania, USA was based on vigilant surveys followed by removal of all Prunus spp. within 500 m of confirmed PPV-positive trees, resulting in declaration of eradication in October 2009. In comparison, in Ontario, Canada, when PPV was first discovered in 2000, the low incidence but widely dispersed epidemic extended throughout the stone fruit industry. The Canadian programme was initially predicated on vigilant s...
10 Citations Source Cite
Published on Sep 1, 2012in Pest Management Science 3.25
Andrew G. S. Cuthbertson18
Estimated H-index: 18
(Food and Environment Research Agency),
James J. Mathers8
Estimated H-index: 8
(Food and Environment Research Agency)
+ 7 AuthorsKeith F. A. Walters22
Estimated H-index: 22
(Food and Environment Research Agency)
BACKGROUND: Predatory mites (Amblyseius swirskii Athias-Henriot, Typhlodromips montdorensis Schicha, Neoseiulus cucumeris (Oudemans) and Iphiseius degenerans Berlese) were investigated for their potential to act as control agents for Thrips palmi Karny. Prey consumption rates and compatibility with pesticides were assessed. RESULTS: Second-instar larvae were the preferred life stage. Typhlodromips montdorensis consumed the most larvae (2.8) and also an average of 1.2 adult T. palmi per 5 day per...
13 Citations Source Cite
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