橡胶树 Hevea brasiliensis 的基因组草图序列。

BACKGROUND

Hevea brasiliensis, a member of the Euphorbiaceae family, is the major commercial source of natural rubber (NR). NR is a latex polymer with high elasticity, flexibility, and resilience that has played a critical role in the world economy since 1876.

RESULTS

Here, we report the draft genome sequence of H. brasiliensis. The assembly spans ~1.1 Gb of the estimated 2.15 Gb haploid genome. Overall, ~78% of the genome was identified as repetitive DNA. Gene prediction shows 68,955 gene models, of which 12.7% are unique to Hevea. Most of the key genes associated with rubber biosynthesis, rubberwood formation, disease resistance, and allergenicity have been identified.

CONCLUSIONS

The knowledge gained from this genome sequence will aid in the future development of high-yielding clones to keep up with the ever increasing need for natural rubber.

背景

巴西橡胶树是大戟科的一员，是天然橡胶（NR）的主要商业来源。NR 是一种具有高弹性、柔韧性和回弹性的乳胶聚合物，自 1876 年以来在世界经济中发挥了至关重要的作用。

结果

在这里，我们报告了巴西橡胶树的基因组草图序列。该组装覆盖了估计的 21.5 亿基因组单倍体的约 11 亿碱基对。总的来说，大约 78%的基因组被鉴定为重复 DNA。基因预测显示有 68955 个基因模型，其中 12.7%是橡胶树所特有的。与橡胶生物合成、橡胶木形成、抗病性和变应原性相关的大多数关键基因都已被鉴定出来。