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首页> 外文期刊>Philosophical Transactions of the Royal Society of London, Series B. Biological Sciences >The genomes uncoupled-dependent signalling pathway coordinates plastid biogenesis with the synthesis of anthocyanins
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The genomes uncoupled-dependent signalling pathway coordinates plastid biogenesis with the synthesis of anthocyanins

机译：基因组依赖性依赖性信号传导途径与合成花青素坐标坐标

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摘要

In recent years, it has become evident that plants perceive, integrate and communicate abiotic stress signals through chloroplasts. During the process of acclimation plastid-derived, retrograde signals control nuclear gene expression in response to developmental and environmental cues leading to complex genetic and metabolic reprogramming to preserve cellular homeostasis under challenging environmental conditions. Upon stress-induced dysfunction of chloroplasts, GENOMES UNCOUPLED (GUN) proteins participate in the repression of PHOTOSYNTHESIS-ASSOCIATED NUCLEAR GENES (PHANGs). Here, we show that the retrograde signal emitted by, or communicated through, GUN-proteins is also essential to induce the accumulation of photoprotective anthocyanin pigments when chloroplast development is attenuated. Comparative whole transcriptome sequencing and genetic analysis reveal GUN1 and GUN5-dependent signals as a source for the regulation of genes involved in anthocyanin biosynthesis. The signal transduction cascade includes well-known transcription factors for the control of anthocyanin biosynthesis, which are deregulated in gun mutants. We propose that regulation of PHANGs and genes contributing to anthocyanin biosynthesis are two, albeit oppositely, co-regulated processes during plastid biogenesis.
机译：近年来，植物感知，植物通过叶绿体感知，整合和传达非生物应激信号。在适应塑性衍生的过程中，逆行信号控制核基因表达响应于发育和环境提示，导致复杂的遗传和代谢重编程，以在挑战环境条件下保护细胞稳态。在叶绿体的应激诱导的功能障碍时，基因组未替换（枪）蛋白参与抑制光合作用相关的核基因（PHANG）。这里，我们表明，当叶绿体发育衰减时，通过枪支蛋白发射或传达通过枪蛋白发射的逆行信号对于诱导光保护花青素颜料的积累也是必要的。对比整个转录组测序和遗传分析将GUN1和GUN5依赖性信号显示为用于调节参与花青素生物合成的基因的来源。信号转导级联包括用于控制花青素生物合成的众所周知的转录因子，这些转录生物合成在枪突变体中进行任何注入。我们提出了对花青素生物合成的噬菌体和贡献的基因的调节是两种，虽然在体层生物发生过程中相反，共调节的过程。

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