Ecology, Evolution, and Organismal Biology Department, Iowa State University, Ames, IA 50010, USA.
College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, Hubei 430070, China.
G3 (Bethesda). 2021 Jul 14;11(7). doi: 10.1093/g3journal/jkab125.
Cotton is an important textile crop whose gains in production over the last century have been challenged by various diseases. Because many modern cultivars are susceptible to several pests and pathogens, breeding efforts have included attempts to introgress wild, naturally resistant germplasm into elite lines. Gossypium stocksii is a wild cotton species native to Africa, which is part of a clade of vastly understudied species. Most of what is known about this species comes from pest resistance surveys and/or breeding efforts, which suggests that G. stocksii could be a valuable reservoir of natural pest resistance. Here, we present a high-quality de novo genome sequence for G. stocksii. We compare the G. stocksii genome with resequencing data from a closely related, understudied species (Gossypium somalense) to generate insight into the relatedness of these cotton species. Finally, we discuss the utility of the G. stocksii genome for understanding pest resistance in cotton, particularly resistance to cotton leaf curl virus.
棉花是一种重要的纺织作物，在上个世纪，其产量的增加受到了各种疾病的挑战。由于许多现代品种易受多种害虫和病原体的影响，因此育种工作包括尝试将野生的、天然抗病虫害的种质资源导入优良品种。亚洲棉原产于非洲，是一个研究甚少的种系的一部分，是一种野生棉花物种。关于这个物种的大部分信息都来自于抗虫害调查和/或育种工作，这表明亚洲棉可能是天然抗虫害的宝贵资源库。在这里，我们提供了亚洲棉的高质量从头基因组序列。我们将亚洲棉的基因组与亲缘关系密切、研究较少的物种（非洲棉）的重测序数据进行比较，以深入了解这些棉花物种的亲缘关系。最后，我们讨论了亚洲棉基因组在理解棉花抗虫害，特别是对棉花曲叶病毒抗性方面的应用。
