Greater ecophysiological stress tolerance in the core environment than in extreme environments of wild chickpea (Cicer reticulatum)

Abstract Global climate change and land use change underlie a need to develop new crop breeding strategies, and crop wild relatives (CWR) have become an important potential source of new genetic material to improve breeding efforts. Many recent approaches assume adaptive trait variation increases to...

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Main Authors: Christopher P. Krieg, Duncan D. Smith, Mark A. Adams, Jens Berger, Niloofar Layegh Nikravesh, Eric J. von Wettberg
Format: Article
Language:English
Published: Nature Portfolio 2024-03-01
Series:Scientific Reports
Online Access:https://doi.org/10.1038/s41598-024-56457-9
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author Christopher P. Krieg
Duncan D. Smith
Mark A. Adams
Jens Berger
Niloofar Layegh Nikravesh
Eric J. von Wettberg
author_facet Christopher P. Krieg
Duncan D. Smith
Mark A. Adams
Jens Berger
Niloofar Layegh Nikravesh
Eric J. von Wettberg
author_sort Christopher P. Krieg
collection DOAJ
description Abstract Global climate change and land use change underlie a need to develop new crop breeding strategies, and crop wild relatives (CWR) have become an important potential source of new genetic material to improve breeding efforts. Many recent approaches assume adaptive trait variation increases towards the relative environmental extremes of a species range, potentially missing valuable trait variation in more moderate or typical climates. Here, we leveraged distinct genotypes of wild chickpea (Cicer reticulatum) that differ in their relative climates from moderate to more extreme and perform targeted assessments of drought and heat tolerance. We found significance variation in ecophysiological function and stress tolerance between genotypes but contrary to expectations and current paradigms, it was individuals from more moderate climates that exhibited greater capacity for stress tolerance than individuals from warmer and drier climates. These results indicate that wild germplasm collection efforts to identify adaptive variation should include the full range of environmental conditions and habitats instead of only environmental extremes, and that doing so may significantly enhance the success of breeding programs broadly.
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spelling doaj.art-2ad84d13ce354a04ab74bd7901bc95ea2024-03-10T12:13:06ZengNature PortfolioScientific Reports2045-23222024-03-011411910.1038/s41598-024-56457-9Greater ecophysiological stress tolerance in the core environment than in extreme environments of wild chickpea (Cicer reticulatum)Christopher P. Krieg0Duncan D. Smith1Mark A. Adams2Jens Berger3Niloofar Layegh Nikravesh4Eric J. von Wettberg5University of WisconsinUniversity of WisconsinSwinburne University of TechnologyCSIRO, Agriculture and FoodDepartment of Plant and Soil Science, University of VermontDepartment of Plant and Soil Science, University of VermontAbstract Global climate change and land use change underlie a need to develop new crop breeding strategies, and crop wild relatives (CWR) have become an important potential source of new genetic material to improve breeding efforts. Many recent approaches assume adaptive trait variation increases towards the relative environmental extremes of a species range, potentially missing valuable trait variation in more moderate or typical climates. Here, we leveraged distinct genotypes of wild chickpea (Cicer reticulatum) that differ in their relative climates from moderate to more extreme and perform targeted assessments of drought and heat tolerance. We found significance variation in ecophysiological function and stress tolerance between genotypes but contrary to expectations and current paradigms, it was individuals from more moderate climates that exhibited greater capacity for stress tolerance than individuals from warmer and drier climates. These results indicate that wild germplasm collection efforts to identify adaptive variation should include the full range of environmental conditions and habitats instead of only environmental extremes, and that doing so may significantly enhance the success of breeding programs broadly.https://doi.org/10.1038/s41598-024-56457-9
spellingShingle Christopher P. Krieg
Duncan D. Smith
Mark A. Adams
Jens Berger
Niloofar Layegh Nikravesh
Eric J. von Wettberg
Greater ecophysiological stress tolerance in the core environment than in extreme environments of wild chickpea (Cicer reticulatum)
Scientific Reports
title Greater ecophysiological stress tolerance in the core environment than in extreme environments of wild chickpea (Cicer reticulatum)
title_full Greater ecophysiological stress tolerance in the core environment than in extreme environments of wild chickpea (Cicer reticulatum)
title_fullStr Greater ecophysiological stress tolerance in the core environment than in extreme environments of wild chickpea (Cicer reticulatum)
title_full_unstemmed Greater ecophysiological stress tolerance in the core environment than in extreme environments of wild chickpea (Cicer reticulatum)
title_short Greater ecophysiological stress tolerance in the core environment than in extreme environments of wild chickpea (Cicer reticulatum)
title_sort greater ecophysiological stress tolerance in the core environment than in extreme environments of wild chickpea cicer reticulatum
url https://doi.org/10.1038/s41598-024-56457-9
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