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Reference Detail
| Reference | ||
|---|---|---|
| Author | Zhao F.Y.a, Han M.M.a, Zhang S.Y.b, Ren J.a, Hu F.a, Wang X.a | |
| Title | MAPKs as a cross point in H2O2 and auxin signaling under combined cadmium and zinc stress in rice roots | |
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Abstract: Previously, we have reported the role of MAPKs (mitogen-activated protein kinases) under cadmium stress. This work continue to explore the relationship between MAPKs, H2O2, auxin signaling, and OsHMA and OsZIP gene expression in rice (Oryza sativa L.) roots under combined cadmium (Cd) and zinc (Zn) stress. Compared with Cd, Cd+Zn reduced Cd levels but increased Zn accumulation in the roots. Three OsMAPK genes were negatively regulated, while two OsHMA and two OsZIP genes were positively regulated by MAPK pathways under Cd+Zn stress. Transgenic rice expressing DR5-GUS exhibited enhanced GUS activity in H2O2-, PD (MAPKK inhibitor PD98059)-, or (Cd+Zn)-treated roots, which also exhibited increased H2O2 concentrations, whereas GUS staining decreased in roots in response to Cd+Zn+PD, DMTU (N,N′-dimethylthiourea, a H2O2 scavenger), or Cd+Zn+DMTU treatment, with reduced H2O2 levels. GUS levels were consistent with H2O2 levels, suggesting that MAPK pathway-mediated auxin redistribution occurs via H2O2, and H2O2 functions downstream of MAPK but upstream of auxin signaling pathways. Furthermore, MAPK pathways serve specific functions in regulating the expression of some key genes of auxin signaling (OsYUCCA, OsPIN, OsARF, and OsIAA) under Cd+Zn stress. Overall, MAPK cascades function in the integration of metal transport, H2O2 generation, and auxin signaling in rice seedlings grown under Cd+Zn stress. c 2014 Pleiades Publishing, Ltd. |
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| Journal | Russian Journal of Plant Physiology | |
| Country | China | |
| Volume | 61 | |
| Pages | 608-618 | |
| Year | 2014 | |
| PubMed ID | - | |
| PubMed Central ID | - | |
| DOI | 10.1134/S1021443714040232 | |
| URL | - | |
| Relation | ||
| Gene | ARF13 ARF16 ARF20 ARF22 ARF6B ARF7 ARF7B BIF2 BWMK1 ETT1 HMA2 HMA4 HMA5 IAA12 IAA15 IAA30 IAA9 MAPK4 MPK7 MSRMK2 PIN10B PIN1C PIN5A PIN5B YUCCA1 YUCCA2 YUCCA3 ZIP6 ZIP7 ZIP8 | |
| INSD | - | |
| Strain | Wild Core Collection | - |
| Induced Mutation Lines(NIG Collection) | - | |
| Sterile Seed Strain | - | |
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Lethal Embryo Mutantion Strain |
- | |
|
Stages in Each Organ - Muant Lines (Gene) |
- | |
| Cultivated Varieties(NIG Collection) | - | |
| Stages in Each Organ | - | |
