State Key Laboratory of Plant Diversity and Specialty Crops/Guangdong Provincial Key Laboratory of Applied Botany/Key Laboratory of National Forestry and Grassland Administration on Plant Conservation and Utilization in Southern China, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, 510650, China.
South China National Botanical Garden, Guangzhou, 510650, China.
Sci Data. 2024 Oct 31;11(1):1187. doi: 10.1038/s41597-024-04032-2.
Consisting of trees, climbers and herbs exclusively in the intertidal environments, mangrove forest is one of the most extreme and vulnerable ecosystems of our planet and has long been of great interest for biologists and ecologists. Here, we first assembled the chromosome-scale genome of a climber mangrove plant, Dalbergia candenatensis. The assembled genome size is approximately 474.55 Mb, with a scaffold N50 of 48.1 Mb, a complete BUSCO score of 98.4%, and a high LTR Assembly Index value of 21. The genome contained 283.46 Mb (59.74%) repetitive sequences, and 29,554 protein-coding genes were predicted, of which 87.54% were functionally annotated in five databases. The high-quality genome assembly and annotation presented herein provide a valuable genomic resource that will expedite genomic and evolutionary studies of mangrove plants and facilitate the elucidation of molecular mechanisms underlying the salt- and water-logging-tolerance of mangrove plants.
红树植物仅由木本、藤本和草本植物组成，生存在潮间带环境中，是地球上最极端和脆弱的生态系统之一，长期以来一直受到生物学家和生态学家的关注。在这里，我们首次组装了一种藤本红树植物——小花龙血树的染色体水平基因组。组装的基因组大小约为 474.55Mb，支架 N50 为 48.1Mb，完整的 BUSCO 评分为 98.4%，LTR 组装指数值为 21。基因组包含 283.46Mb（59.74%）重复序列，预测了 29554 个蛋白质编码基因，其中 87.54%在五个数据库中进行了功能注释。本文提供的高质量基因组组装和注释为红树植物的基因组和进化研究提供了有价值的基因组资源，并有助于阐明红树植物耐盐和耐水淹的分子机制。
