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Reference Detail
| Reference | ||
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| Author | Na-Hyun Shin, Do Thi Trang, Woo-Jong Hong, Kang K., Chuluuntsetseg J., Joon-Kwan Moon, Yo-Han Yoo, Ki-Hong Jung, Soo-Cheul Yoo | |
| Title | Rice Senescence-Induced Receptor-Like Kinase (<i>OsSRLK</i>) Is Involved in Phytohormone-Mediated Chlorophyll Degradation. | |
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Abstract: Chlorophyll breakdown is a vital catabolic process of leaf senescence as it allows the recycling of nitrogen and other nutrients. In the present study, we isolated rice senescence-induced Receptor-Like Kinase (<i>OsSRLK</i>), whose transcription was upregulated in senescing rice leaves. The detached leaves of <i>OsSRLK</i> mutant (<i>OsSRLK</i>) contained more green pigment than those of the wild type (WT) during dark-induced senescence (DIS). HPLC and immunoblot assay revealed that degradation of chlorophyll and photosystem II proteins was repressed in <i>OsSRLK</i> during DIS. Furthermore, ultrastructural analysis revealed that <i>OsSRLK</i> leaves maintained the chloroplast structure with intact grana stacks during dark incubation; however, the retained green color and preserved chloroplast structures of <i>OsSRLK</i> did not enhance the photosynthetic competence during age-dependent senescence in autumn. In <i>OsSRLK</i>, the panicles per plant was increased and the spikelets per panicle were reduced, resulting in similar grain productivity between WT and <i>OsSRLK</i>. By transcriptome analysis using RNA sequencing, genes related to phytohormone, senescence, and chlorophyll biogenesis were significantly altered in <i>OsSRLK</i> compared to those in WT during DIS. Collectively, our findings indicate that <i>OsSRLK</i> may degrade chlorophyll by participating in a phytohormone-mediated pathway. |
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| Journal | Int J Mol Sci | |
| Country | South Korea | |
| Volume | 21(1) | |
| Pages | ||
| Year | 2019 | |
| PubMed ID | 31905964 | |
| PubMed Central ID | 6982081 | |
| DOI | 10.3390/ijms21010260 | |
| URL | - | |
| Relation | ||
| Gene | ABI1 ETR2 ETR3 HD5 HFP LOX1 LOX2 OSBZ8 PIN1B RLCK176 SAPK6 SH11 SRLK ST1 TAC5 WRKY72 | |
| 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 | - | |
