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Reference Detail
| Reference | ||
|---|---|---|
| Author | Yang B.a, Wang X.M.a, Ma H.Y.a, Jia Y.a, Li X.b, Dai C.C.a | |
| Title | Effects of the fungal endophyte Phomopsis liquidambari on nitrogen uptake and metabolism in rice | |
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Abstract: Phomopsis liquidambari can establish a mutualistic symbiotic relationship with rice. It promotes the growth and yield of the host plant and reduces the amount of nitrogen (N) fertilizer required for plant growth. However, the mechanisms responsible for the effects of the fungal endophyte on N use in rice are largely unknown. We conducted a hydroponic experiment to investigate the effects of P. liquidambari on N uptake and N metabolism in rice plants. Rice plants were cultivated in the presence or absence of P. liquidambari under three N levels. Under the low-N treatment, fungal infection significantly increased the biomass, and the total N, soluble protein, free amino acid, free NH4 +, and chlorophyll contents of rice roots and shoots. The activities of nitrate reductase and glutamine synthetase were increased in infected rice plants. Some genes related to N uptake (OsAMT1;1, OsAMT1;3, OsAMT2;2, OsAMT3;2, OsAMT3;3, OsNRT2;1) and N metabolism (OsNR1, OsGS1, OsGS2, OsNADH-GOGAT) were also up-regulated in infected plants under the low-N treatment. However, these effects gradually weakened as the N level increased. The colonization rate of the endophyte substantially decreased with increasing N levels. Taken together, these results suggest that low-N fertilization induces a physiological state in rice that is favorable for the P. liquidambari symbiosis. The greater extent of P. liquidambari colonization under low-N conditions stimulated the expression of several genes involved in N uptake and N metabolism in rice, thereby enhancing N utilization. These results have implications for enhancing plant growth in low-input systems at nutrient-poor sites. c 2013 Springer Science+Business Media Dordrecht. |
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| Journal | Plant Growth Regul. | |
| Country | China | |
| Volume | 73 | |
| Pages | 165-179 | |
| Year | 2014 | |
| PubMed ID | - | |
| PubMed Central ID | - | |
| DOI | 10.1007/s10725-013-9878-4 | |
| URL | - | |
| Relation | ||
| Gene | AMT1;1 AMT1;2 AMT3;1 AMT3;2 AMT3;3 GLN1;1 GLT1 GS2 HTNE _ | |
| 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 | - | |
