Crop wild relatives (CWR) are wild species that are more or less genetically related to crops that can be used to introgress useful genes for improvement of productivity, resistance to biotic and ...abiotic stresses and quality of cultivated crops. They are important in crop improvement to achieve food security for an increasing population and to overcome the challenges caused by climate change and the new virulence of major diseases and pests. These genetic resources are increasingly threatened in their natural habitats through over-exploitation and land reclamation and degradation. Therefore, their efficient and effective conservation would be taxonomically and genetically valuable and will contribute to maintaining and promoting the sustainability of crop diversity, facilitating agricultural production and supporting the increasing demand for food, feed and natural resources. A checklist of 5780 Crop Wild Relatives (CWR) taxa from North Africa was obtained using the CWR Catalogue for Europe and the Mediterranean (PGR Forum). Of which consists 76% of the flora of North Africa. The checklist contains 5588 (~97%) native taxa and 192 introduced. Families with higher taxa richness are Fabaceae, Asteraceae, and Poaceae. These three families constitute more than 33% of the total taxa included in the checklist. About 9% (502) CWR taxa identified as a priority for conservation in North Africa using four criteria, the economic value of the crop, the relatedness degree of wild relatives to their crop, threat status using IUCN red list assessment, and finally the centre of origin and/or diversity of the crop. Of these, 112 taxa were assigned high, 268 medium and 122 low priorities for effective conservation. Those assessed as threatened using IUCN Red list and national assessment represent approximately 2% (119 taxa) of the CWR in the region. However, 21 taxa are assessed as critically endangered (CR), 53 as endangered (EN), and 45 as vulnerable (VU). Wild relatives of some globally important crops are present, with those related to wheat (
Triticum aestivum
L. and
T. durum
L.) and barley (
Hordeum vulgare
L.) among the highest priority crops for the North Africa region. Amongst CWR assessed as threatened, only 8 (6.7%) CWR are related to food crops,
Avena agadiriana
B.R. Baum. et G. Fedak (VU),
A. atlantica
B.R. Baum et G. Fedak (VU),
A. murphyi
Ladiz. (EN),
Beta macrocarpa
Guss. (EN),
Olea europaea
subsp.
maroccana
Guss. (VU),
Rorippa hayanica
Maire (VU) and
Aegilops bicornis
(Forssk.) Jaub. et Spach (VU). The wild relative of Safflower
Carthamus glaucus
M. Bieb is restricted to Egypt and Libya and assessed as rare in Egypt. The information available about the conservation and threat status of CWR in North Africa still lags behind, and more investigations are required.
Setting priority species for conservation planning in a large and biodiverse country such as Indonesia is crucial. At least 80% of the medicinal plant species in South East Asia can be found in ...Indonesia, whether they are native or introduced. However, their conservation is currently ineffective due to limited human and financial resources. By examining factors such as species' occurrence status, rarity and part of the plant harvested, the various Indonesian medicinal plant species can be prioritised for conservation planning. In this study, various threatened plant species have been included in the priority list as well as those listed in related legislation. Some 233 species within 161 genera and 71 families are recommended for prioritisation. An inventory of these priority species was produced presenting compiled data including vernacular names, plant habit, harvested plant part, uses, distribution, whether it is conserved ex situ, and their DNA barcoding. Significantly 41.20% of priority species have no information on their current conservation status in either in situ or ex situ national or international genebanks.
The analysis of climate change impact is essential to include in conservation planning of crop wild relatives (CWR) to provide the guideline for adequate long-term protection under unpredictable ...future environmental conditions. These resources play an important role in sustaining the future of food security, but the evidence shows that they are threatened by climate change. The current analyses show that five taxa were predicted to have contraction of more than 30 % of their current ranges: Artocarpus sepicanus (based on RCP 4.5 in both no dispersal and unlimited dispersal scenario and RCP 8.5 in no dispersal scenario by 2050), Ficus oleifolia (RCP 4.5 5 in both no dispersal and unlimited dispersal scenario by 2080), Cocos nucifera and Dioscorea alata (RCP 8.5 in both no dispersal and unlimited dispersal scenario by 2050), and Ficus chartacea (RCP 8.5 in both no dispersal and unlimited dispersal scenario by 2050 and 2080). It shows that the climate change impact is species-specific. Representative Concentration Pathways (RCP) of greenhouse gas (GHG) emission and dispersal scenarios influence the prediction models, and the actual future distribution range of species falls in between those scenarios. Climate refugia, holdout populations, and non-analogue community assemblages were identified based on the Protected Areas (PAs) network. PAs capacity is considered an important element in implementing a conservation strategy for the priority CWR. In areas where PAs are isolated and have less possibility to build corridors to connect each other, such as in Java, unlimited dispersal scenarios are unlikely to be achieved and assisted dispersal is suggested. The holdout populations should be the priority target for the ex situ collection. Therefore, by considering the climate refugia, PAs capacity and holdout populations, the goal of keeping high genetic variations for the long-term conservation of CWR in Indonesia can be achieved.
The aim of this paper is to contribute directly to the systematic, long-term conservation of crop wild relatives (CWR) in the Fertile Crescent by setting conservation priorities to secure and improve ...CWR conservation in situ and ex situ as a means of underpinning global food security. We established the first priority list of CWR within the Fertile Crescent following several criteria comprising production value (m × p), projected production value (m × p), production area (ha), projected production area (ha), native status, energy supply (kcal/capita/day), protein supply (g/capita/day), fat supply (g/capita/day), occurrence status, gene pool, taxon group, and threat status. An inventory of 220 priority CWR was established for the Fertile Crescent region. We followed twelve prioritisation approaches and assessed 21,080 species. About 4% of the total species (835 species) were identified as CWR that have socio-economic value for the region. These 835 CWR species were prioritised to create the CWR priority list which consisted of 220 species (1% of the total species assessed). The majority of the CWR priority list (185 species) were related to cereal, vegetable, and industrial crops and 35 of them are related to fruits and trees. The CWR priority list includes crop wild relatives of the genera
Aegilops
(20 species),
Lactuca
(11 species),
Avena
(11 species),
Carthamus
(11 species),
Allium
(9 species),
Thinopyrum
(10 species), and
Triticum
(3 species). We present the first inventory of 220 priority CWR for the Fertile Crescent. The inventory helps to improve in situ and ex situ conservation and the genetic diversity of CWR. Both the inventory and the methodology applied in prioritisation can be used in setting national, regional, and global conservation strategies. The recommendations will help the Fertile Crescent meet its targets in conserving CWR diversity as well as making sure that CWR genetic resources are preserved to prevent and tackle global food insecurity.
An essential component of efforts to mitigate the impacts of climate change on crop production and food security is the production of new varieties of crops which can thrive in more extreme, ...changeable and uncertain environmental conditions. Humankind is therefore dependent on the continual availability of a wide pool of plant genetic resources for food and agriculture (PGRFA) to sustain our food and economic security, yet despite the vast pool of resources that exists, we face significant hurdles in mobilizing them for effective and sustainable use. The Governing Body of the International Treaty on Plant Genetic Resources for Food and Agriculture (the Treaty) has recognized the pivotal role of sustainable use of PGRFA in addressing global challenges—including climate change adaptation, food security and biodiversity loss—and the need to assist countries in designing measures to promote the sustainable use of PGRFA. A global survey was conducted by the Secretariat of the Treaty to gather the views and needs of PGRFA stakeholders, the results of which have allowed a clearer understanding of the ‘bottlenecks’ in the PGRFA use system and a deeper comprehension of the constraints and needs regarding the implementation of the sustainable use provisions of the Treaty. In particular, there is a critical need to address: (a) limitations regarding policy in support of sustainable use activities; (b) capacity building needs in all areas of the PGRFA sustainable use spectrum; and (c) access to plant genetic material and associated information.
Many crop species suffer from a lack of genetic diversity which reduces the ability of cultivars to withstand new pests or environmental stresses. The wild relatives of crop plants are an important ...source of genetic variation and can be used to introduce new traits into existing crops. Identification and conservation of crop wild relatives (CWR) is, therefore, an important step to safeguard future food security. Recent efforts have identified geographical hotspots of CWR diversity in several countries but, as yet, there have been no surveys to identify the habitats and landscape features within these areas that might be most suitable for conservation efforts. Here, we use a UK-wide vegetation survey covering a range of both habitats and landscape features (e.g. fields, hedgerows, waterways and roadsides) to identify the habitats and features with the highest proportion of CWR identified as priority taxa for conservation. Priority CWR were most abundant in grassland habitats, although this was most striking in CWR related to forage and fodder crops. CWR related to food crops were most common in cropped and weedy areas, fertile grassland and lowland woodland. Within habitats, CWR occurrence was significantly associated with linear features including hedgerows, roadsides, field boundaries and field margins. Our findings indicate that CWR of conservation interest are often associated with disturbed habitats and landscape features that are not considered as priorities under site-based conservation measures. We suggest that efforts to maintain linear features in hotspots of CWR diversity would be most effective at conserving the UK's CWR resource.
•We quantified the distribution of crop wild relatives (CWR) in the UK landscape.•Grasslands were the habitat with the highest number of CWR of conservation priority.•Priority CWR were also frequent in hedges, field margins and road verges.•This highlights the importance of linear features in intensively managed landscapes.•Guidelines for habitat-based CWR conservation are discussed.
Verbascum and Rhabdotosperma are members of the family Scrophulariaceae. The first genus comprises approximately 360 species from almost all parts of the world, while the second contains a total of 8 ...species from tropical Africa and the Arabian Peninsula. Since 1977, the relationships between Verbascum and Rhabdotosperma continue to be contested. The present study aims to present the phylogenetic relationships and status among Verbascum species in the Arabian Peninsula. For phylogenetic analyses, maximum parsimony and Bayesian inference were performed. In total, 236 DNA sequences from 59 specimens of Arabian Verbascum were analysed. The phylogenetic analysis of one nuclear (ITS) and three chloroplastic (rbcL, matK, trnL) markers confirmed the monophyly of Verbascum, including the genus Rhabdotosperma. In addition to presenting novel phylogenetic relationships among the different Verbascum species in the Arabian Peninsula, our study reduced the species count of Arabian Verbascum to 16. Moreover, the phylogenetic analysis strongly supports the reinstatement of the genus Rhabdotosperma into Verbascum based on the Bayesian and maximum parsimony analyses.
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