Species of Alternaria (phylum Ascomycota, family Pleosporaceae) are known as serious plant pathogens, causing major losses on a wide range of crops. Alternaria atra (previously known as Ulocladium atrum) can grow as a saprophyte on many hosts and causes Ulocladium blight on potato. It has been reported that it can also be used as a biocontrol agent against Botrytis cinerea. Here, we present a scaffold-level reference genome assembly for A. atra. The assembly contains 43 scaffolds with a total length of 39.62 Mbp, with scaffold N₅₀ of 3,893,166 bp, L₅₀ of 4, and the longest 10 scaffolds containing 89.9% of the assembled data. RNA-sequencing-guided gene prediction using BRAKER resulted in 12,173 protein-coding genes with their functional annotation. This first high-quality reference genome assembly and annotation for A. atra can be used as a resource for studying evolution in the highly complicated Alternaria genus and might help in understanding the mechanisms defining its role as pathogen or biocontrol agent.

Copyright © 2021 The Author(s). This is an open access article distributed under the CC BY 4.0 International license.

链格孢属（子囊菌门，Pleosporaceae 科）物种被称为严重的植物病原体，对多种作物造成重大损失。Alternaria atra（以前称为Ulocladium atrum）可以在许多宿主上作为腐生菌生长，并在马铃薯上引起 Ulocladium 枯萎病。据报道，它还可以用作灰葡萄孢菌的生物防治剂。在这里，我们提出了A. atra的支架级参考基因组组装。该组件包含 43 个支架，总长度为 39.62 Mbp，支架 N ₅₀为 3,893,166 bp，L ₅₀为 4，最长的 10 个支架包含组装数据的 89.9%。核糖核酸-使用 BRAKER 进行测序指导的基因预测产生了 12,173 个蛋白质编码基因及其功能注释。A. atra 的第一个高质量参考基因组组装和注释可用作研究高度复杂的链格孢属进化的资源，并可能有助于理解将其定义为病原体或生物防治剂的机制。

版权所有 © 2021 作者。这是在 CC BY 4.0 国际许可下分发的开放获取文章。