Potential use of wild Onobrychis species for climate change mitigation and adaptation

Abstract

Climate change is threatening environmental and nutritional security. In this scenario, forage crops and their wild relatives may contribute to maintain ecosystem services and minimize the effects of global warming. We reviewed the literature regarding the ecological, agronomic, and nutraceutical values of wild Onobrychis Miller species (sainfoins, Family Fabaceae). We also discussed their application prospects and the existing problems hampering their widespread domestication. Wild species of the genus Onobrychis have some interesting agronomic and ecological features such as perenniality, deep root system, and high-stress tolerance, which make them suitable for future cultivation under climate change. Wild Onobrychis species are multipurpose species, which can be utilized for fodder and honey production under harsh environmental conditions. In addition, wild Onobrychis species water, ethanol, and methanol extracts exhibit antioxidant, antidiabetic, anti-inflammatory, antitumor, antimicrobial, anti-stressor, and many other pharmacological effects. Wild Onobrychis species have not been the subject of detailed studies. Compared with the cultivated forage legumes, wild Onobrychis species are still underexploited despite their potential to alleviate forage and food insecurity, either by domestication or by providing novel alleles for breeding purposes of the cultivated species Onobrychis viciifolia. Our review aims to increase scientific awareness toward exploring the potential uses of wild Onobrychis species to tackle current climate change.