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Reference Detail
| Reference | ||
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| Author | Liu J., Shen L., Guo L., Zhang G., Gao Z., Zhu L., Hu J., Dong G., Ren D., Zhang Q., Li Q., Zeng D., Yan C., Qian Q. | |
| Title | OsSTS, a Novel Allele of Mitogen-Activated Protein Kinase Kinase 4 (OsMKK4), Controls grain size and salt tolerance in Rice. | |
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Abstract: Soil salinization is one of the most common abiotic stresses of rice, which seriously affects the normal growth of rice. Breeding salt-tolerant varieties have become one of the important ways to ensure food security and sustainable agricultural development. However, the mechanisms underlying salt tolerance control still need to be clarified. In this study, we identified a mutant, termed salt-tolerant and small grains(sts), with salt tolerance and small grains. Gene cloning and physiological and biochemical experiments reveal that sts is a novel mutant allele of Mitogen-activated protein Kinase Kinase 4 (OsMKK4), which controls the grain size, and has recently been found to be related to salt tolerance in rice. Functional analysis showed that OsSTS is constitutively expressed throughout the tissue, and its proteins are localized to the nucleus, cell membrane, and cytoplasm. It was found that the loss of OsSTS function enhanced the salt tolerance of rice seedlings, and further studies showed that the loss of OsSTS function increased the ROS clearance rate of rice seedlings, independent of ionic toxicity. In order to explore the salt tolerance mechanism of sts, we found that the salt tolerance of sts is also regulated by ABA through high-throughput mRNA sequencing. Salt and ABA treatment showed that ABA might alleviate the inhibitory effect of salt stress on root length in sts. These results revealed new functions of grain size gene OsMKK4, expanded new research ideas related to salt tolerance mechanism and hormone regulation network, and provided a theoretical basis for salt-tolerant rice breeding. |
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| Journal | Rice (N Y) | |
| Country | China | |
| Volume | 16(1) | |
| Pages | 47 | |
| Year | 2023 | |
| PubMed ID | 37874376 | |
| PubMed Central ID | 10597928 | |
| DOI | 10.1186/s12284-023-00663-y | |
| URL | - | |
| Relation | ||
| Gene | ABI1 ABI5 AO3 DHN1 DHN6 LEA3-1 NCED3 NHX1 PP2C1 PP2C30 PYL/RCAR7 RAB16A RAB16B RAB16C RCN1 SMG1 TIFY11A ZFP179 | |
| INSD | - | |
| Strain | Wild Core Collection | - |
| Induced Mutation Lines(NIG Collection) | - | |
| Sterile Seed Strain | - | |
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Lethal Embryo Mutantion Strain |
- | |
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Stages in Each Organ - Muant Lines (Gene) |
- | |
| Cultivated Varieties(NIG Collection) | - | |
| Stages in Each Organ | - | |
