Modelled distributions and conservation status of the wild relatives of chile peppers (<i>Capsicum</i>L.)

Khoury, Colin K.; Carver, Daniel; Barchenger, Derek W.; Barboza, Gloria Estela; Zonneveld, Maarten van; Jarret, Robert L.; Bohs, Lynn; Kantar, Michael B.; Uchanski, Mark E.; Mercer, Kristin L.; Nabhan, Gary Paul; Bosland, Paul W.; Greene, Stephanie L.

doi:10.1111/ddi.13008

Cited by 47 publications

(62 citation statements)

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“…As has been found in other clades (Khoury, Carver, Barchenger, et al., 2020; Lebeda et al., 2019), Sorghum 's in situ conservation scores were generally higher than corresponding ex situ scores. This indicates the potential value of in situ conservation to CWR protection, with the possibility for many taxa to be protected by a single well‐placed protected area (Maxted et al., 2013).…”

Section: Discussionsupporting

confidence: 64%

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Modelled distributions and conservation priorities of wild sorghums (Sorghum Moench)

Myrans

Díaz

Khoury

et al. 2020

Diversity and Distributions

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Aim To fill knowledge gaps regarding the distributions, ecogeographic niches and conservation status of sorghum's wild relatives (Sorghum Moench). Location The study covered the potential native ranges of wild Sorghum taxa worldwide, including Australia, New Guinea, Asia, Africa and Central America. Methods We modelled the distributions of 23 wild Sorghum taxa, characterized their ecogeographic niches, assessed their conservation status both ex situ and in situ and performed preliminary threat assessments. Results Three taxa were categorized as “high priority” for further conservation based on their ex situ and in situ assessments, with a further 19 as “medium priority” and only one as “low priority”. The preliminary threat assessment indicated that 12 taxa may be Endangered, four Vulnerable and four Near Threatened. The taxa fill a wide range of climatic niches, both across and within taxa, including temperatures and precipitation. Main conclusions Taxon richness hotspots, especially in northern Australia, represent hotspots for conservation action, including further seed collection and habitat protection, with Sorghum macrospermum E. D. Garber being the highest priority for increased in situ protection. Outside Australia, Sorghum propinquum (Kunth) Hitchc. stands out for further ex situ conservation, especially given its close relationship to the crop.

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Section: Discussionsupporting

confidence: 64%

“…The ex situ and in situ conservation of each taxon was assessed following Khoury, Carver, Barchenger, et al. (2020) and Khoury, Carver, Kates, et al. (2020), with four scores calculated for both ex situ and in situ schemes.…”

Section: Methodsmentioning

confidence: 99%

Modelled distributions and conservation priorities of wild sorghums (Sorghum Moench)

Myrans

Díaz

Khoury

et al. 2020

Diversity and Distributions

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“…Although the genetic diversity and variation within wild populations of Capsicum has been studied (Carrizo García et al, 2016;Cheng et al, 2016;Aguilar Meléndez et al, 2009;Oyama et al, 2006;Votava et al, 2002;Loaiza-Figueroa et al, 1989), the pool of phenotypic data for wild Capsicum species remains limited (Barchenger and Bosland, 2019). There also remains a lack of access to publicly available germplasm representing the diversity of wild Capsicum (Khoury et al, 2020). There is therefore an immediate need to better understand the role of wild Capsicum species in future breeding programs.…”

Section: Such Misidentification Presents a Challenge To Utilizing Knomentioning

confidence: 99%

“…), C. frutescens (L.), and C. pubescens (Ruiz & Pav. ) (Khoury et al, 2020). The diversity of Capsicum species represents a valuable genetic resource for crop improvement (Barchenger and Bosland, 2019).…”

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Reproductive Compatibility inCapsicumis not Reflected in Genetic or Phenotypic Similarity Between Species Complexes

Parry

Wang

Lin

et al. 2020

Preprint

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Wild relatives of domesticated Capsicum represent substantial genetic diversity and thus sources of traits of potential interest. Furthermore, the hybridization compatibility between members of Capsicum species complexes remains unresolved. Improving our understanding of the relationship between Capsicum species relatedness and their ability to form hybrids is a highly pertinent issue. Through the development of novel interspecific hybrids in this study, we demonstrate interspecies compatibility is not necessarily reflected in relatedness according to established Capsicum genepool complexes. Based on a phylogeny constructed by genotyping using single sequence repeat (SSR) markers and with a portion of the waxy locus, and through principal component analysis (PCA) of phenotypic data, we clarify the relationships among wild and domesticated Capsicum species. Together, the phylogeny and hybridization studies provide evidence for the misidentification of a number of species from the World Vegetable Center genebank included in this study. The World Vegetable Center holds the largest collection of Capsicum genetic material globally, therefore this may reflect a wider issue in the misidentification of Capsicum wild relatives. The findings presented here provide insight into an apparent disconnect between compatibility and relatedness in the Capsicum genus, which will be valuable in identifying candidates for future breeding programs.

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“…CWR constitute genetic resources with demonstrated value for plant breeding due to their useful traits, which are not easily found in crops due to domestication bottlenecks and the subsequent narrowing of the cultivated gene pool through breeding efforts [ 2 ]. Further, CWR are often important cultural resources being directly harvested for food, spice, medicine, ceremony or other uses [ 3 ] and provide various ecosystem services within their natural habitats.…”

Section: Introductionmentioning

confidence: 99%

The Potential of Payment for Ecosystem Services for Crop Wild Relative Conservation

Tyack

Dempewolf²,

Khoury

2020

Plants

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Crop wild relatives (CWR) have proven to be very valuable in agricultural breeding programs but remain a relatively under-utilized and under-protected resource. CWR have provided resistance to pests and diseases, abiotic stress tolerance, quality improvements and yield increases with the annual contribution of these traits to agriculture estimated at USD 115 billion globally and are considered to possess many valuable traits that have not yet been explored. The use of the genetic diversity found in CWR for breeding provides much-needed resilience to modern agricultural systems and has great potential to help sustainably increase agricultural production to feed a growing world population in the face of climate change and other stresses. A number of CWR taxa are at risk, however, necessitating coordinated local, national, regional and global efforts to preserve the genetic diversity of these plants through complementary in situ and ex situ conservation efforts. We discuss the absence of adequate institutional frameworks to incentivize CWR conservation services and propose payment for ecosystem services (PES) as an under-explored mechanism for financing these efforts. Such mechanisms could serve as a potentially powerful tool for enhancing the long-term protection of CWR.

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Modelled distributions and conservation status of the wild relatives of chile peppers (CapsicumL.)

Abstract: The cover image is based on the Original Article Modeled distributions and conservation status of the wild relatives of chile peppers (Capsicum L.) by Colin K. Khoury et al., https://doi.

Cited by 47 publications

References 82 publications

Modelled distributions and conservation priorities of wild sorghums (Sorghum Moench)

Modelled distributions and conservation priorities of wild sorghums (Sorghum Moench)

Reproductive Compatibility inCapsicumis not Reflected in Genetic or Phenotypic Similarity Between Species Complexes

The Potential of Payment for Ecosystem Services for Crop Wild Relative Conservation

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