https://scholars.lib.ntu.edu.tw/handle/123456789/639708
標題: | Exogenous Copper Application for the Elemental Defense of Rice Plants against Rice Leaffolder (Cnaphalocrocis medinalis) | 作者: | Cheah, Boon Huat WEN-PO CHUANG Lo, Jing Chi Li, Yi Cheng, Chih Yun Yang, Zhi Wei Liao, Chung Ta YA-FEN LIN |
關鍵字: | insect pest | micronutrient supplement | Oryza sativa L | rice tolerance | trace elements | 公開日期: | 1-五月-2022 | 卷: | 11 | 期: | 9 | 來源出版物: | Plants | 摘要: | Metals that accumulate in plants may confer protection against herbivorous insects, a phenomenon known as elemental defense. However, this strategy has not been widely explored in important crops such as rice (Oryza sativa L.), where it could help to reduce the use of chemical pesticides. Here, we investigated the potential of copper (Cu) and iron (Fe) micronutrient supplements for the protection of rice against a major insect pest, the rice leaffolder (Cnaphalocrocis medinalis). We found that intermediate levels of Cu (20 µM CuSO4) and high concentrations of Fe (742 µM Fe) did not inhibit the growth of C. medinalis larvae but did inhibit rice root growth and reduce grain yield at the reproductive stage. In contrast, high levels of Cu (80 µM CuSO4) inhibited C. medinalis larval growth and pupal development but also adversely affected rice growth at the vegetative stage. Interestingly, treatment with 10 µM CuSO4 had no adverse effects on rice growth or yield components at the reproductive stage. These data suggest that pest management based on the application of Cu may be possible, which would be achieved by a higher effective pesticide dose to prevent or minimize its phytotoxicity effects in plants. |
URI: | https://www.scopus.com/record/display.uri?eid=2-s2.0-85128454693&origin=resultslist https://scholars.lib.ntu.edu.tw/handle/123456789/639708 |
ISSN: | 2223-7747 | DOI: | 10.3390/plants11091104 |
顯示於: | 農藝學系 |
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