Climate-Smart Horticulture: Role of Biotechnology in Sustainable Crop Production

Abstract

Climate change poses unprecedented threats to global food systems, with horticultural crops being particularly vulnerable to temperature extremes, irregular precipitation, soil salinity, and emerging pest and disease pressures. The integration of biotechnology into horticultural systems offers a scientifically rigorous and practically viable pathway towards climate-smart crop production. This review provides a comprehensive synthesis of the current state of knowledge regarding the application of biotechnological tools — including genomics, marker-assisted selection, genetic engineering, CRISPR-Cas9-based genome editing, RNA interference, and multi-omic approaches — in the development of climate-resilient horticultural crops. The literature reviewed in this article was identified through systematic searches of the major academic bibliographic databases, including Web of Science, Scopus, PubMed, and Google Scholar. Searches were conducted without strict temporal restriction, though particular emphasis was placed on literature published between 2005 and 2026 to ensure currency and relevance. The review explores how these technologies are being employed to enhance tolerance to abiotic stresses such as drought, heat, salinity, and cold, whilst simultaneously improving nutritional quality, pest resistance, post-harvest shelf life, and nutrient use efficiency. Regulatory frameworks, ethical considerations, and socioeconomic implications — particularly for smallholder farmers in developing nations — are critically examined. Evidence from the literature suggests that biotechnology, when thoughtfully integrated with conventional breeding and agronomic practices, can substantially contribute to the sustainability and resilience of horticultural production systems under a changing climate. Emerging frontiers, including speed breeding, high-throughput phenotyping, epigenomics, and synthetic biology, are discussed as complementary tools to accelerate progress. The review concludes that a multidisciplinary, inclusive, and evidence-based approach to deploying biotechnology in horticulture is essential for achieving global food security and sustainable development goals in the face of escalating climatic uncertainties.