Mixed-Oligosaccharides Promote Seedling Growth of Direct-Seeded Rice under Salt and Alkaline Stress
Rice direct seeding technology is an appealing alternative to traditional transplanting because it conserves labor and irrigation resources. Nevertheless, there are two main issues, salt stress and alkaline stress, which contribute to poor emergence and seedling growth, thereby preventing the widesp...
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Elsevier
2024-11-01
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| Series: | Rice Science |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S1672630824000684 |
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| author | Yang Yigang Xu Ya’nan Bai Yeran Zhang Yuanpei Han Wei Makoto Saito Lü Guohua Song Jiqing Bai Wenbo |
| author_facet | Yang Yigang Xu Ya’nan Bai Yeran Zhang Yuanpei Han Wei Makoto Saito Lü Guohua Song Jiqing Bai Wenbo |
| author_sort | Yang Yigang |
| collection | DOAJ |
| description | Rice direct seeding technology is an appealing alternative to traditional transplanting because it conserves labor and irrigation resources. Nevertheless, there are two main issues, salt stress and alkaline stress, which contribute to poor emergence and seedling growth, thereby preventing the widespread adoption and application of this technique in the Ningxia Region of China. Therefore, to determine whether germination can be promoted by mixed-oligosaccharide (KP) priming (in which seeds are soaked in a KP solution before sowing) under salt and alkaline stress, a proteomics study was performed. KP-priming significantly mitigated abiotic stress, such as salt and alkaline stress, by inhibiting root elongation, ultimately improving seedling establishment. By comparing the proteomics analyses, we found that energy metabolic pathway was a vital factor in KP-priming, which explains the alleviation of salt and alkaline stress. Key proteins involved in starch mobilization, pyruvate mobilization, and ATP synthesis, were up-regulated by KP-priming, significantly blocking salt and alkaline-triggered starch accumulation while enhancing pyruvate metabolism. KP-priming also up-regulated ATP synthase to improve energy efficiency, thereby improving ATP production. In addition, it enhanced antioxidant enzymatic activities and reduced the accumulation of reactive oxygen species. All of these factors contributed to a better understanding of the energy regulatory pathway enhanced by KP-priming, which mediated the promotion of growth under salt and alkaline conditions. Thus, this study demonstrated that KP-priming can improve rice seed germination under salt and alkaline stress by altering energy metabolism. |
| format | Article |
| id | doaj-art-4d1ac991ad9c4c6e8f43361c4e23db5a |
| institution | Kabale University |
| issn | 1672-6308 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | Elsevier |
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| series | Rice Science |
| spelling | doaj-art-4d1ac991ad9c4c6e8f43361c4e23db5a2024-12-22T05:27:39ZengElsevierRice Science1672-63082024-11-01316712724Mixed-Oligosaccharides Promote Seedling Growth of Direct-Seeded Rice under Salt and Alkaline StressYang Yigang0Xu Ya’nan1Bai Yeran2Zhang Yuanpei3Han Wei4Makoto Saito5Lü Guohua6Song Jiqing7Bai Wenbo8Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, ChinaInstitute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, China; China National Rice Research Institute, Hangzhou 311400, ChinaInstitute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, ChinaInstitute of Crop Research, Ningxia Academy of Agriculture and Forestry Sciences, Yinchuan 750002, ChinaShandong General Station of Agricultural Technology Extension, Ji’nan 250100, ChinaResonac Corporation (Showa Denko K.K.), Tokyo 105-8518, JapanInstitute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, ChinaInstitute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, ChinaInstitute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, China; Corresponding author: Bai WenboRice direct seeding technology is an appealing alternative to traditional transplanting because it conserves labor and irrigation resources. Nevertheless, there are two main issues, salt stress and alkaline stress, which contribute to poor emergence and seedling growth, thereby preventing the widespread adoption and application of this technique in the Ningxia Region of China. Therefore, to determine whether germination can be promoted by mixed-oligosaccharide (KP) priming (in which seeds are soaked in a KP solution before sowing) under salt and alkaline stress, a proteomics study was performed. KP-priming significantly mitigated abiotic stress, such as salt and alkaline stress, by inhibiting root elongation, ultimately improving seedling establishment. By comparing the proteomics analyses, we found that energy metabolic pathway was a vital factor in KP-priming, which explains the alleviation of salt and alkaline stress. Key proteins involved in starch mobilization, pyruvate mobilization, and ATP synthesis, were up-regulated by KP-priming, significantly blocking salt and alkaline-triggered starch accumulation while enhancing pyruvate metabolism. KP-priming also up-regulated ATP synthase to improve energy efficiency, thereby improving ATP production. In addition, it enhanced antioxidant enzymatic activities and reduced the accumulation of reactive oxygen species. All of these factors contributed to a better understanding of the energy regulatory pathway enhanced by KP-priming, which mediated the promotion of growth under salt and alkaline conditions. Thus, this study demonstrated that KP-priming can improve rice seed germination under salt and alkaline stress by altering energy metabolism.http://www.sciencedirect.com/science/article/pii/S1672630824000684ricesalt and alkaline stressmixed-oligosaccharidemetabolic adjustmentstarch mobilizationseed priming |
| spellingShingle | Yang Yigang Xu Ya’nan Bai Yeran Zhang Yuanpei Han Wei Makoto Saito Lü Guohua Song Jiqing Bai Wenbo Mixed-Oligosaccharides Promote Seedling Growth of Direct-Seeded Rice under Salt and Alkaline Stress Rice Science rice salt and alkaline stress mixed-oligosaccharide metabolic adjustment starch mobilization seed priming |
| title | Mixed-Oligosaccharides Promote Seedling Growth of Direct-Seeded Rice under Salt and Alkaline Stress |
| title_full | Mixed-Oligosaccharides Promote Seedling Growth of Direct-Seeded Rice under Salt and Alkaline Stress |
| title_fullStr | Mixed-Oligosaccharides Promote Seedling Growth of Direct-Seeded Rice under Salt and Alkaline Stress |
| title_full_unstemmed | Mixed-Oligosaccharides Promote Seedling Growth of Direct-Seeded Rice under Salt and Alkaline Stress |
| title_short | Mixed-Oligosaccharides Promote Seedling Growth of Direct-Seeded Rice under Salt and Alkaline Stress |
| title_sort | mixed oligosaccharides promote seedling growth of direct seeded rice under salt and alkaline stress |
| topic | rice salt and alkaline stress mixed-oligosaccharide metabolic adjustment starch mobilization seed priming |
| url | http://www.sciencedirect.com/science/article/pii/S1672630824000684 |
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