MYB70 modulates seed germination and root system development in Arabidopsis

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dc.creatorWan, Jinpeng
dc.creatorWang, Ruling
dc.creatorZhang, Ping
dc.creatorSun, Liangliang
dc.creatorJu, Qiong
dc.creatorHuang, Haodong
dc.creatorLü, Shiyou
dc.creatorTran, Lam-Son Phan (TTU)
dc.creatorXu, Jin
dc.date.accessioned2022-07-11T15:55:11Z
dc.date.available2022-07-11T15:55:11Z
dc.date.issued2021
dc.description© 2021 The Author(s). This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.en_US
dc.description.abstractCrosstalk among ABA, auxin, and ROS plays critical roles in modulating seed germination, root growth, and suberization. However, the underlying molecular mechanisms remain largely elusive. Here, MYB70, a R2R3-MYB transcription factor was shown to be a key component of these processes in Arabidopsis thaliana. myb70 seeds displayed decreased sensitivity, while MYB70-overexpressing OX70 seeds showed increased sensitivity in germination in response to exogenous ABA through MYB70 physical interaction with ABI5 protein, leading to enhanced stabilization of ABI5. Furthermore, MYB70 modulates root system development (RSA) which is associated with increased conjugated IAA content and H2O2/O2⋅− ratio but reduced root suberin deposition, consequently affecting nutrient uptake. In support of these data, MYB70 positively regulates the expression of auxin conjugation-related GH3, while negatively peroxidase-encoding and suberin biosynthesis-related genes. Our findings collectively revealed a previously uncharacterized component that modulates ABA and auxin signaling pathways, H2O2/O2⋅− balance, and suberization, consequently regulating RSA and seed germination.en_US
dc.identifier.citationWan, J., Wang, R., Zhang, P., Sun, L., Ju, Q., Huang, H., Lü, S., Tran, L.-S., & Xu, J. (2021). MYB70 modulates seed germination and root system development in Arabidopsis. IScience, 24(11), 103228. https://doi.org/10.1016/j.isci.2021.103228en_US
dc.identifier.urihttps://doi.org/10.1016/j.isci.2021.103228
dc.identifier.urihttps://hdl.handle.net/2346/89910
dc.language.isoengen_US
dc.subjectBiological Sciencesen_US
dc.subjectCell Biologyen_US
dc.subjectPlant Biologyen_US
dc.subjectPlant Histologyen_US
dc.subjectPlant Geneticsen_US
dc.titleMYB70 modulates seed germination and root system development in Arabidopsisen_US
dc.typeArticleen_US

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