【Department of Soil Environmental Sciences / Young, Chiu-Chung / Academician】
循環農業：農業有機循環再利用的多合一創新碳匯技術開發【土壤環境科學系/楊秋忠院士】
| 論文篇名 | 英文：Effect of seed biopriming with selected endophytes on the growth and chilling tolerance of rice plants 中文：選定內生菌種子生物引發對水稻生長及耐冷性的影響 |
| 期刊名稱 | LETTERS IN APPLIED MICROBIOLOGY |
| 發表年份,卷數,起迄頁數 | 2023, 76, ovac035 |
| 作者 | Lai, Wei-An; Shen, Fo-Ting(沈佛亭); Ho, Tuan-Hua David; Yu, Su-May; Young, Chiu-Chung(楊秋忠)* |
| DOI | 10.1093/lambio/ovac035 |
| 英文摘要 | The aim of this study was to develop an efficient bioinoculant for amelioration of adverse effects from chilling stress (10°C), which are frequently occurred during rice seedling stage. Seed germination bioassay under chilling condition with rice (Oryza sativa L.) cv. Tainan 11 was performed to screen for plant growth-promoting (PGP) bacteria among 41 chilling-tolerant rice endophytes. And several agronomic traits were used to evaluate the effects of bacterial inoculation on rice seedling, which were experienced for 7-d chilling stress in walk-in growth chamber. The field trials were further used to verify the performance of potential PGP endophytes on rice growth. A total of three endophytes with multiple PGP traits were obtained. It was demonstrated that Pseudomonas sp. CC-LS37 inoculation led to 18% increase of maximal efficiency of Photosystem II (PSII) after 7-d chilling stress and 7% increase of chlorophyll a content, and 64% decline of malondialdehyde content in shoot after 10-d recovery at normal temperature in walk-in growth chamber. In field trial, biopriming of seeds with strain CC-LS37 caused rice plants to increase shoot chlorophyll soil plant analysis development values (by 2.9% and 2.5%, respectively) and tiller number (both by 61%) under natural climate and chilling stress during the end of tillering stage, afterward 30% more grain yield was achieved. In conclusion, strain CC-LS37 exerted its function in increase of tiller number of chilling stress-treated rice seedlings via improvement of photosynthetic characteristics, which in turn increases the rice grain yield. This study also proposed multiple indices used in the screening of potential endophytes for conferring chilling tolerance of rice plants. |
| 發表成果與本中心研究主題相關性 | 本研究的目的是開發一種有效的生物接種劑，以改善水稻苗期經常發生的低溫脅迫（10°C）的不利影響。並利用多種農藝性狀評估了細菌接種對水稻幼苗的影響，水稻幼苗在步入式生長室中經歷了7天的低溫脅迫。菌株CC-LS37透過改善光合特性發揮了增加低溫脅迫處理水稻幼苗分蘗數的作用，從而提高了水稻產量。 該研究還提出了用於篩選潛在內生菌以賦予水稻植物耐冷性的多個指標。 |
