TY - JOUR
T1 - A framework for establishing a rapid ‘Ōhi‘a death resistance program
AU - Luiz, Blaine C.
AU - Giardina, Christian P.
AU - Keith, Lisa M.
AU - Jacobs, Douglass F.
AU - Sniezko, Richard A.
AU - Hughes, Marc A.
AU - Friday, James B.
AU - Cannon, Philip
AU - Hauff, Robert
AU - Francisco, Kainana
AU - Chau, Marian M.
AU - Dudley, Nicklos
AU - Yeh, Aileen
AU - Asner, Gregory
AU - Martin, Roberta E.
AU - Perroy, Ryan
AU - Tucker, Brian J.
AU - Evangelista, ʻAleʻalani
AU - Fernandez, Veronica
AU - Martins-Keliʻihoʻomalu, Chloe
AU - Santos, Kirie
AU - Ohara, Rebekah
N1 - Funding Information:
We thank the USDA Forest Service Region 5, Region 6 and the Pacific Southwest Research Station, the Hawaiʻi Community Foundation, and Hawaiʻi Department of Forestry and Wildlife for facility and financial support. Thanks to Cody Pacheco, Tyler Uehara, Nanea Thomas, Cherish Keliʻihoʻomalu, and Zachary Cook for conducting field collections and greenhouse maintenance. We are deeply appreciative of the access to the banked Metrosideros seeds provided by Laukahi: The Hawaiʻi Plant Conservation Network and the Rapid ʻŌhiʻa Death Seed Banking Initiative. We thank Susan Ching (DLNR DOFAW), Anna Sugiyama (University of Hawaiʻi at Mānoa Lyon Arboretum), and Dustin Wolkis (National Tropical Botanical Garden) for providing Metrosideros seeds from Oʻahu and Kauaʻi. Thanks to Alice Lindahl, James Haefner, and the Leilani Estates community members who have volunteered and allowed the ʻŌDRP to study their precious survivor ʻōhiʻa. Mention of trademark, proprietary product, or vendor does not constitute a guarantee or warranty of the product by the U.S. Dept. of Agriculture and does not imply its approval to the exclusion of other products or vendors that also may be suitable.
Funding Information:
We thank the USDA Forest Service Region 5, Region 6 and the Pacific Southwest Research Station, the Hawaiʻi Community Foundation, and Hawaiʻi Department of Forestry and Wildlife for facility and financial support. Thanks to Cody Pacheco, Tyler Uehara, Nanea Thomas, Cherish Keliʻihoʻomalu, and Zachary Cook for conducting field collections and greenhouse maintenance. We are deeply appreciative of the access to the banked Metrosideros seeds provided by Laukahi: The Hawaiʻi Plant Conservation Network and the Rapid ʻŌhiʻa Death Seed Banking Initiative. We thank Susan Ching (DLNR DOFAW), Anna Sugiyama (University of Hawaiʻi at Mānoa Lyon Arboretum), and Dustin Wolkis (National Tropical Botanical Garden) for providing Metrosideros seeds from Oʻahu and Kauaʻi. Thanks to Alice Lindahl, James Haefner, and the Leilani Estates community members who have volunteered and allowed the ʻŌDRP to study their precious survivor ʻōhiʻa. Mention of trademark, proprietary product, or vendor does not constitute a guarantee or warranty of the product by the U.S. Dept. of Agriculture and does not imply its approval to the exclusion of other products or vendors that also may be suitable.
Publisher Copyright:
© 2022, This is a U.S. government work and not under copyright protection in the U.S.; foreign copyright protection may apply.
PY - 2023/7
Y1 - 2023/7
N2 - Metrosideros polymorpha Gaud. (‘ōhi‘a) is the most abundant native forest tree in Hawai‘i and a keystone species of cultural, ecological, and economic importance. ‘Ōhi‘a forests, particularly on Hawaiʻi Island, are being severely impacted by Rapid ‘Ōhi‘a Death (ROD), which is caused by the fungal pathogens Ceratocystis lukuohia and C. huliohia. ROD is characterized by branch dieback, crown wilting, and mortality. Initial disease resistance screening of four varieties of M. polymorpha with C. lukuohia demonstrated that varieties may differ in susceptibility. Several survivors of field or screening-based infections still exist, providing strong impetus for the establishment of the ‘Ōhiʻa Disease Resistance Program (ʻŌDRP). Here, we outline a framework for guiding the ʻŌDRP throughout the process of identifying and developing ROD resistance in M. polymorpha and, possibly, all Hawaiian Metrosideros species. Core ʻŌDRP projects include: (1) evaluating and operationalizing methods for greenhouse-based production and screening of test plants; (2) greenhouse screening of seedlings and rooted cuttings sampled from native Metrosideros throughout Hawaiʻi; (3) establishing field trials to validate results from greenhouse assays; (4) understanding environmental and genetic drivers of resistance to characterize the durability of resistance to ROD; (5) developing remote sensing and molecular methods to rapidly detect ROD-resistant individuals; and (6) conducting breeding trials to improve the degree and durability of ROD resistance. Ultimately, the ʻŌDRP seeks to produce ROD-resistant material for the perpetuation of M. polymorpha across Hawai‘i, with the goal of preserving the ecology, culture, and communities that are dependent on this tree species.
AB - Metrosideros polymorpha Gaud. (‘ōhi‘a) is the most abundant native forest tree in Hawai‘i and a keystone species of cultural, ecological, and economic importance. ‘Ōhi‘a forests, particularly on Hawaiʻi Island, are being severely impacted by Rapid ‘Ōhi‘a Death (ROD), which is caused by the fungal pathogens Ceratocystis lukuohia and C. huliohia. ROD is characterized by branch dieback, crown wilting, and mortality. Initial disease resistance screening of four varieties of M. polymorpha with C. lukuohia demonstrated that varieties may differ in susceptibility. Several survivors of field or screening-based infections still exist, providing strong impetus for the establishment of the ‘Ōhiʻa Disease Resistance Program (ʻŌDRP). Here, we outline a framework for guiding the ʻŌDRP throughout the process of identifying and developing ROD resistance in M. polymorpha and, possibly, all Hawaiian Metrosideros species. Core ʻŌDRP projects include: (1) evaluating and operationalizing methods for greenhouse-based production and screening of test plants; (2) greenhouse screening of seedlings and rooted cuttings sampled from native Metrosideros throughout Hawaiʻi; (3) establishing field trials to validate results from greenhouse assays; (4) understanding environmental and genetic drivers of resistance to characterize the durability of resistance to ROD; (5) developing remote sensing and molecular methods to rapidly detect ROD-resistant individuals; and (6) conducting breeding trials to improve the degree and durability of ROD resistance. Ultimately, the ʻŌDRP seeks to produce ROD-resistant material for the perpetuation of M. polymorpha across Hawai‘i, with the goal of preserving the ecology, culture, and communities that are dependent on this tree species.
KW - Ceratocystis
KW - Disease resistance
KW - Forest pathogens
KW - Fungal disease
KW - Metrosideros polymorpha
KW - Plant disease
UR - http://www.scopus.com/inward/record.url?scp=85123490108&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85123490108&partnerID=8YFLogxK
U2 - 10.1007/s11056-021-09896-5
DO - 10.1007/s11056-021-09896-5
M3 - Review article
AN - SCOPUS:85123490108
SN - 0169-4286
VL - 54
SP - 637
EP - 660
JO - New Forests
JF - New Forests
IS - 4
ER -