In a recent publication, we proposed that adjusting lifespan in order to synchronize senescence is important for timing of reproduction, and we quantified the synchrony of reproductive timing relative to germination timing. Here, in a second sequential seeding experiment (SSE), the germination timing of Arabidopsis thaliana accessions was manipulated and plants were then grown under two different temperature regimes. Life stage traits of plants in each temperature regime were analysed and it was evaluated whether the cohorts were grouped according to age and/or environmental conditions. While flowering-related traits showed desynchrony among cohorts, striking synchrony in the timing of senescence among cohorts for each group was found. A quantitative trait locus (QTL) analysis using a genotyped population of ‘Cvi/Ler’ recombinant inbred lines (RILs) was then conducted. Novel and known loci were assigned to flowering and senescence timing. However, senescence synchrony resulted in low variation in senescence time and weak QTL detection for flowering termination. Overlapping flowering and senescence genes with loci affecting either of those traits were found and suggest a potential interdependency of reproductive traits.

中文翻译：

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拟南芥衰老的同步和开花的去同步。

在最近的一篇出版物中，我们提出调整寿命以同步衰老对于繁殖时间很重要，并且我们量化了繁殖时间相对于发芽时间的同步性。在这里，在第二次连续播种实验（SSE）中，操纵拟南芥种质的发芽时间，然后在两种不同的温度条件下生长植物。分析了每个温度条件下植物的生命阶段性状，并评估了是否根据年龄和/或环境条件对群体进行分组。虽然与开花相关的性状在群体之间表现出不同步，但发现每组群体之间的衰老时间惊人地同步。然后使用“Cvi/Ler”重组自交系（RIL）基因分型群体进行数量性状基因座（QTL）分析。新的和已知的基因座被指定为开花和衰老时间。然而，衰老同步性导致衰老时间变异较小，开花终止的 QTL 检测较弱。发现了重叠的开花和衰老基因以及影响这些性状的基因座，这表明生殖性状之间存在潜在的相互依赖性。