Department of Plant Genetics Breeding and Biotechnology, Institute of Biology, Warsaw University of Life Sciences, Nowoursynowska 159, Warsaw, Poland.
J Appl Genet. 2022 Dec;63(4):597-608. doi: 10.1007/s13353-022-00710-2. Epub 2022 Jul 15.
Cold stress is one of the main causes of yield losses in plant production in temperate climate areas. Cold stress slows down and even stops plant growth and development and causes injuries that may result in the plant's death. Cucumber (Cucumis sativus L.), an economically important vegetable, is sensitive to low temperatures, thus improving cold tolerance in cucumber would benefit cucumber producers, particularly those farming in temperate climates and higher altitude areas. So far, single cucumber accessions showing different degrees of cold tolerance have been identified, and genetic studies have revealed biparentally and maternally inherited genetic factors responsible for chilling tolerance. Paternally transmitted chilling tolerance has also been suggested. Quantitative trait loci (QTL) associated with seed germination ability at low temperature and seedling recovery from chilling have been described. Several transgenic attempts have been made to improve cold tolerance in cucumber. Despite numerous studies, the molecular mechanisms of cold tolerance in cucumber have still not been sufficiently elucidated. In this review, we summarise the results of research focused on understanding the genetic basis of cold tolerance in cucumber and their implications for cucumber breeding.
冷胁迫是温带气候地区植物生产中产量损失的主要原因之一。冷胁迫会减缓甚至停止植物的生长和发育，并导致伤害，从而可能导致植物死亡。黄瓜（Cucumis sativus L.）是一种经济上重要的蔬菜，对低温敏感，因此提高黄瓜的耐寒性将有利于黄瓜种植者，特别是在温带气候和高海拔地区种植的种植者。到目前为止，已经鉴定出具有不同程度耐寒性的单一黄瓜品系，遗传研究揭示了负责耐冷性的双亲遗传和母系遗传因子。也有人提出了父本传递的耐寒性。已经描述了与低温下种子萌发能力和从冷胁迫中恢复的幼苗相关的数量性状位点（QTL）。已经进行了多次转基因尝试来提高黄瓜的耐寒性。尽管进行了大量研究，但黄瓜耐寒性的分子机制仍未得到充分阐明。在这篇综述中，我们总结了专注于理解黄瓜耐寒性遗传基础及其对黄瓜育种意义的研究结果。
