Presentation of gap analysis results for Priority 1A CWR in the United States, given at the annual international ASA/CSSA/SSSA meeting, November 3-6, Tampa, Florida
1. photo- Kasia Stepien
Distributions and Conservation
Concerns for Crop Wild Relatives of
the United States
Colin K. Khoury, Stephanie Greene, John Wiersema, Nora P.
Castañeda-Álvarez, Chrystian C. Sosa, Vivian Bernau, Harold A.
Achicanoy, Alex Castañeda, Larry Stritch, Jan Schultz, Karen Williams,
Andy Jarvis, and Paul C. Struik
ASA, CSSA & SSSA International Annual Meetings, November 6, 2013, Tampa, FL
2. photo- Kasia Stepien
CWR are valuable
Western corn rootworm resistance from Eastern gamagrass
(Tripsacum dactyloides).
Prischmann et al. (2008) http://naldc.nal.usda.gov/download/29879/PDF. (Image by Henry Domke)
US Production
Value (million
$USD, 2012)
Crop
(NASS)
$851
Blueberry
$5,970
Cotton
$386
Cranberry
$4,911
Grape
$1,872
Lettuce
$77,352
Maize (grain)
$477
Pecan
$7
Plum
$149
Pumpkin
$2,406
Strawberry
$728
Sunflower
$500
Sweet Potato
Salinity tolerance from Pecos sunflower (Helianthus paradoxus).
Miller and Seiler (2003) https://www.crops.org/publications/cs/articles/43/6/2313. (Image by J.N. Stewart)
3. CWR are threatened
Wild Pecos sunflower Helianthus paradoxus (Image by J.N.
Stewart)
photo- Kasia Stepien
Wild squash Cucurbita okeechobeensis subsp.
okeechobeensis (Image by USFWS)
Texas wild rice Zizania texana (Image by USFWS)
Scrub plum Prunus geniculata (Image by USFWS)
Source: http://www.fws.gov/endangered/species/us-species.html
4. photo- Kasia Stepien
National inventory
• 4,600 taxa
• Collaborative process and peer reviewed
• CWR related to major crops prioritized,
along with US iconic wild crops
• 273 closely related, native taxa related to
38 crops = Priority 1A.
Khoury et al (2013) An Inventory of Crop Wild Relatives of the
United States. Crop Sci. 53(4): 1496.
https://www.crops.org/publications/cs/articles/53/4/1496
6. photo- Kasia Stepien
Occurrence data
62,000 records,
38,000 with coordinates
Info on methods: Ramírez-Villegas et al (2010) A Gap Analysis Methodology for Collecting Crop Genepools: A Case Study with Phaseolus Beans. PLoS ONE 5(10): e13497.
6
doi:10.1371/journal.pone.0013497. http://www.plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0013497
13. Collecting priorities
• 219 species of high priority for collecting
• Related to 36 crops
• Collecting gaps in all 50 states + D.C.!
State
photo- Kasia Stepien
# of HPS with
gaps
New York
87
Virginia
85
Tennessee
82
Texas
82
North Carolina
80
West Virginia
80
Pennsylvania
78
Ohio
77
Illinois
75
Georgia
74
New Jersey
74
Indiana
73
Arkansas
72
Kentucky
72
Maryland
72
Massachusetts
72
Missouri
72
South Carolina
72
Florida
69
Alabama
68
Number of high priority species for collecting, per state
14. photo- Kasia Stepien
US a priority in the global context
Countries with the most HPS for collecting worldwide
0.06
140
0.05
No. of CWR taxa
120
0.04
100
80
0.03
60
0.02
40
0.01
20
0
0
No. CWR taxa
CWR concentration
CWR concentration
(No. taxa per 100 sq. km.)
160
15. CWR conservation in action
George Washington National Forest, VA
Wild cranberry
Vaccinium
macrocarpon
photo- Kasia Stepien
Monongahela
National Forest, WV
Info: http://www.fs.fed.us/wildflowers/news/cranberry/index.shtml
16. photo- Kasia Stepien
• http://cwroftheus.wordpress.com/
• www.cwrdiversity.org
• Colin Khoury CIAT c.khoury@cgiar.org
• Stephanie Greene, ARS Stephanie.Greene@ars.usda.gov
• Larry Stritch, USFS lstritch@fs.fed.us
Thank you!
We acknowledge with thanks, the contribution of the project "Adapting Agriculture to
Climate Change: Collecting, Protecting and Preparing Crop Wild Relatives" managed by
the Global Crop Diversity Trust with the Millennium Seed Bank of the Royal Botanic
Gardens, Kew, in making data, methods and expertise available for this work.
Editor's Notes
Thank you for comingHonor to have the opportunity to present some results to this communityCollaboration between national agencies, international research centers and academic institutionsReinforce two points then ask a question
CWR of the US are no exception- many cases of use in breedingPhylloxera resistance grapes from N. American wild grape rootstockEnglish walnut rootstock- JuglanshindsiiCWR native to the US are related to a sizable list of crops of significant importance to US agriculture
Native and introduced species (12% of inventory) includedClosely and distantly related CWR includedAvailable as a download from GRIN website, and will be incorporated into GRIN interactive site eventuallyNecessary to prioritize
who
whereOccurrence data from global dataset- herbaria and genebanksFor information on methodology, see Phaseolus paper
Maxent models based upon occurrence dataConstrained to native areas (state level)Cross validated
where
where
How well conservedConservation analysis from a national perspective- priorities analyzed for US distributions.
Collecting gap maps = distribution models minus areas where collecting has already occurred (CA50)
How well conservedCollecting gap richness maps for HPSReminder this does not pertain to conservation status in situ- upcoming analysis. 28% of the US is owned by the US Federal Government.
Ongoing CWR collecting by USDA ARS NPGS- national germplasm system- largest in nation and service provider for the world’s plant breedersUSFS- nation’s largest landownerGenetic diversity analyses underway- Juan Zalapa ARS Cranberry Genetics and Genomics Lab Madison, WisconsinConservation ex situ- Kim Hummer, curator of the National Clonal Germplasm Repository in Corvallis, OregonIn situ planningNext steps:Expert inputsIn situ conservation analysesMaking data useful for on the ground effortsCollaborating with diverse agencies, land owners, organizations