A chloroplast retrograde signal, 3’-phosphoadenosine 5’-phosphate, acts as a secondary messenger in abscisic acid signaling in stomatal closure and germination

@article{Pornsiriwong2017ACR,
  title={A chloroplast retrograde signal, 3’-phosphoadenosine 5’-phosphate, acts as a secondary messenger in abscisic acid signaling in stomatal closure and germination},
  author={Wannarat Pornsiriwong and G. Estavillo and K. X. Chan and Estee E Tee and Diep R. Ganguly and Peter A. Crisp and S. Y. Phua and Chenchen Zhao and Jiaen Qiu and Jiyoung Park and M. Yong and Nazia Nisar and A. Yadav and B. Schwessinger and J. Rathjen and C. Cazzonelli and P. Wilson and M. Gilliham and Z. Chen and B. Pogson},
  journal={eLife},
  year={2017},
  volume={6}
}
Organelle-nuclear retrograde signaling regulates gene expression, but its roles in specialized cells and integration with hormonal signaling remain enigmatic. Here we show that the SAL1-PAP (3′-phosphoadenosine 5′- phosphate) retrograde pathway interacts with abscisic acid (ABA) signaling to regulate stomatal closure and seed germination in Arabidopsis. Genetically or exogenously manipulating PAP bypasses the canonical signaling components ABA Insensitive 1 (ABI1) and Open Stomata 1 (OST1… Expand
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