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Orchidlands Estates Ceratocystis DNA Detection 2016

Metadata Updated: October 29, 2023

Rapid ʽŌhiʽa Death (ROD) currently threatens ōhiʽa lehua (Metrosideros polymorpha) on Hawaiʽi Island. First identified in Puna in 2014, the disease has now spread island wide. Besides direct sampling of trees, environmental sampling could serve as an easier and broader strategy to detect Ceratocystis spp., the fungi causing ROD. Environmental sampling could also help monitor the effect of felling ROD infected trees. We developed Passive and Active Environmental Samplers and deployed them at a property in Puna, where both C. lukuohia, and C. huliohia had been detected, and where the land owner practiced the management method of felling infected trees. We set up 2 Active Environmental Samplers (modified mosquito traps connected to a battery that uses a fan to continuously draw in air) and 3 Passive Environmental Samplers (uses a vane to move in the direction of the wind without the use of electricity) from July 12th to October 25th, 2016. The Active Samplers contained one slide (1 replicate) each, while the Passive Samplers contained 4 slides (4 replicates) each. Samplers were located in the lawn (2 Active, 1 Passive), next to a rainwater catchment tank (1 Passive), and next to a small shed (1 Passive). The dataset contains a list of sampling weeks and their start and end dates, and quantitative polymerase chain reaction (qPCR) results for individual slides that were collected from Active and Passive Samplers located at the Lawn, Tank and Shed sites. Samples were tested twice for Ceratocystis lukuohia, Ceratocystis huliohia, and Metrosideros polymorpha DNA after extraction with a Machery Nagel Plant II Extraction Kit and again after DNA was concentrated by ethanol precipitation. Positive qPCR test results are presented as quantitation cycle (Cq) in which fluorescence is detected for Ceratocystis lukuohia, Ceratocystis huliohia, and Metrosideros polymorpha DNA for each individual slide and number of replicates that were positive out of three for C. lukuohia and C. huliohia and out of six for M. polymorpha. Lines that are blank in columns for Cq values reflect negative test results. When Cq values have more than one replicate for a test, the reported Cq value represents the average of all positive replicates.

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Public: This dataset is intended for public access and use. License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

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Metadata Created Date June 1, 2023
Metadata Updated Date October 29, 2023

Metadata Source

Harvested from DOI EDI

Additional Metadata

Resource Type Dataset
Metadata Created Date June 1, 2023
Metadata Updated Date October 29, 2023
Publisher U.S. Geological Survey
Identifier USGS:5c1bf92fe4b0708288c7aaca
Data Last Modified 20200827
Category geospatial
Public Access Level public
Bureau Code 010:12
Metadata Context
Metadata Catalog ID
Schema Version
Catalog Describedby
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Harvest Source Id 52bfcc16-6e15-478f-809a-b1bc76f1aeda
Harvest Source Title DOI EDI
Metadata Type geospatial
Old Spatial -155.04593,19.531,-154.98756,19.58114
Publisher Hierarchy White House > U.S. Department of the Interior > U.S. Geological Survey
Source Datajson Identifier True
Source Hash 948dd6b44bc67100118483c0127839a8e433b309dcc7b2394e0c3b318c2a7cb7
Source Schema Version 1.1
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