The interaction between mitochondrial retrograde signals and glucose glycoside synthesis regulation.

Plants sense and integrate various hormones and signaling molecules from the environment through different interaction signal transducting pathways.
alterative oxidase (alterative oxidase1a, aox1a) encoded in the nucleus of the cell has been used as a pattern system to study retrograde or pressure signals between the mitochondrial and nucleus.
Zhang Xinhua, Ph.D., South China Botanical Garden, Chinese Academy of Sciences, and postdoctoral Ivanova Aneta, under the guidance of Professor Whylan James and postdoctoral De Clercq Inge, identified myB domain protein AtMYB29 as a negative regulator of the alterative oxidase gene (Regulator of alterative oxidase ox1a 7, rao7) mutant.
Under antimycin A (Antimycin A) induction, rao7/myb29 mutants had higher AOX1a expression and protein levels compared with wild types, and a variety of genes associated with mitochondrial pressure showed enhanced transcriptional abundance, indicating that RAO7/MYB29 had a negative effect of regulating mitochondrial pressure response.
meta-analysis of the hormone response marker gene and the identification of the downstream transcription factor network revealed that MYB29 has a complex mutual regulatory network, including ethylene, jasmine acid, salino acid, reactive oxygen signal and other ethylene response factors and WRKY transcription factors.
Although rao7/myb29 enhances the induction of mitochondrial stress response genes, its mutants are sensitive under moderate light and drought, and these results reveal the interaction between mitochondrial retrograde signals and glucose glycoside synthesis regulation.
common regulators can explain why mitochondrial disturbances cause transcriptional responses to overlap with biological stress responses.
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