Rampant nuclear transfer and substitutions of plastid genes in Passiflora

Comparative transcriptome analyses were performed to determine the fate of the missing plastid genes in Passiflora. Putative functional transfers of rps7, rpl22 and rpl32 to nucleus were detected, with the nuclear transfer of rps7 representing a novel event in angiosperms. . Plastid rpl20 likely experienced a novel substitution by a duplicated, nuclear-encoded mitochondrial-targeted rpl20 that has a similar gene structure. . Nuclear transcripts representing two missing genes, ycf1 and ycf2 and highly divergent gene, rpoA, were not detected.

搜集汇总

背景与挑战

背景概述

该数据集围绕西番莲属植物中质体基因的核转移和替换现象，通过比较转录组分析揭示了rps7、rpl22和rpl32向细胞核的功能转移（其中rps7为被子植物中的新发现事件），以及rpl20基因被核编码的线粒体靶向同源基因替代。项目提供了44 Gbases的原始测序数据，涵盖6个样本，适用于研究质体基因进化与核-质体互作机制。