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ARS Home » Pacific West Area » Pullman, Washington » Plant Germplasm Introduction and Testing Research » Research » Publications at this Location » Publication #352478

Research Project: Management of Priority Legume, Oilseed, Vegetable, Forage Grass, Sugar, Ornamental, and Medicinal Plant Genetic Resources and Associated Information

Location: Plant Germplasm Introduction and Testing Research

Title: Wild relatives of domesticated pea in the Mediterranean Region and the Fertile Crescent will respond to global climate change

Author
item Smykal, P. - Palacky University
item Hradilova, I. - Palacky University
item Trneny, O. - Agricultural Research, Ltd Troubsko
item Brus, J. - Palacky University
item Pechanec, V. - Palacky University
item Rathore, A. - International Crops Research Institute For Semi-Arid Tropics (ICRISAT) - India
item Bariotakis, M. - University Of Greece - Crete
item Das, R.r. - International Crops Research Institute For Semi-Arid Tropics (ICRISAT) - India
item Coyne, Clarice - Clare
item Pirintsos, S. - University Of Greece - Crete

Submitted to: Meeting Abstract
Publication Type: Abstract Only
Publication Acceptance Date: 2/15/2018
Publication Date: N/A
Citation: N/A

Interpretive Summary: none

Technical Abstract: There is growing interest in conservation and utilization of crop wild relatives (CWR) in international food security policy and research. We explored macroecological patterns of wild pea in the Mediterranean Basin and the Fertile Crescent in relation to the past, current and future climate suitability. Pisum genus evolved in the Eastern Mediterranean and spread westwards. There was east-west recolonization during the Holocene and population size contraction under local Last Glacial Maximum climate in resident western and low elevation populations. Our study revealed that the isolation-by-distance does not explain their genetic structure in their westwards expansion from their centers of origin. Ecological niche modelling results support that the predicted genetic diversity centers of wild pea in the Mediterranean area may be driven by Miocene-Pliocene events, while the predicted species diversity centers may reflect recent (Pleisto-Holocene) climatic changes. Most of the haplotypes are predicted to vanish from their current distribution areas by the 2070, while the rest of them are expected to present a shift to more xeric- shrublands setting the urgent need to revise the hitherto conservation priorities. Genetic data suggest that while species identities are intact the diversity in these species is impacted by changes in environment. Our results describing the genetic diversity of wild Pisum and their spatial and environmental structure, suggests that these important genetic resources are under pressure from climate change and may need additional conservation planning.