دورية أكاديمية
The mechanism of enhanced lignin regulating foliar Cd absorption and yield in rice (Oryza sativa L.)
| العنوان: | The mechanism of enhanced lignin regulating foliar Cd absorption and yield in rice (Oryza sativa L.) |
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| المؤلفون: | Qin Dong, Qi Tao, Bing Li, Rong Huang, Qiang Xu, Huanxiu Li, Jie Shen, Xi Chen, Qiquan Li, Xiaoyan Tang, František Kačík, Ján Kováč, Jaroslav Ďurkovič, Yingjie Wu, Changquan Wang |
| المصدر: | Ecotoxicology and Environmental Safety, Vol 249, Iss , Pp 114481- (2023) |
| بيانات النشر: | Elsevier, 2023. |
| سنة النشر: | 2023 |
| المجموعة: | LCC:Environmental pollution LCC:Environmental sciences |
| مصطلحات موضوعية: | Heavy metal, Oryza sativa, Food safety, Stable isotope tracer, Genetic engineering, Environmental pollution, TD172-193.5, Environmental sciences, GE1-350 |
| الوصف: | The impact of atmospheric deposition of cadmium (Cd) in cereal crops has become a global concern. Enhanced lignin content was expected to benefit the plant performance against Cd exposure. To date, however, the underlying mechanisms of lignin regulating foliar Cd absorption in rice (Oryza sativa L.) and its effect on grain yield remains unclear. In present study, the effect and mechanism of rice in response to leaf Cd exposure were investigated using 113Cd stable isotope and a lignin-increased rice mutant. The highest Cd uptake efficiency and uptake amount was observed in wild type (WT) plant grown in the maturity period, which were 3-fold higher than in mutant plant. Compared to WT, the mutant exhibited 14.75% and 25.43% higher contents in G- and S-unit of lignin monomers. Lignin biosynthesis and polymerization related genes (OsPAL/OsCOMT/Os4CL3/OsLAC5/OsLAC15) were significantly up-regulated in mutants. In addition, the enzyme activities involved in the above process were also significantly increased by 1.24–1.49-fold. The increased Cd retention in cell wall and decreased gene expression levels of OsNRAMP5, OsHMA3 and OsIRT1 in mutant indicated that lignin effectively inhibited Cd transportion in plant tissues. Moreover, the antioxidant capacity and photosynthesis efficiency in mutant plant were obviously improved, leading to higher Cd tolerance and increased grain yield. Our results revealed the molecular and physiological mechanisms of enhanced lignin regulating foliar Cd absorption and yield in rice, and provided the valuable rice genotype to ensure food safety. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 0147-6513 |
| Relation: | http://www.sciencedirect.com/science/article/pii/S0147651322013215; https://doaj.org/toc/0147-6513 |
| DOI: | 10.1016/j.ecoenv.2022.114481 |
| URL الوصول: | https://doaj.org/article/b2d3a4a5310147508da8f2c32be16f35 |
| رقم الأكسشن: | edsdoj.b2d3a4a5310147508da8f2c32be16f35 |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 01476513 |
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| DOI: | 10.1016/j.ecoenv.2022.114481 |