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| 1 | A rice XANTHINE DEHYDROGENASE gene regulates leaf senescence and response to abiotic stresses显示文摘Xanthine dehydrogenase, a member of the molybdenum enzyme family, participates in purine metabolism and catalyzes the generation of ureides from xanthine and hypoxanthine. However, the mechanisms by which xanthine dehydrogenase affects rice growth and development are poorly understood. In the present study, we identified a mutant with early leaf senescence and reduced tillering that we named early senescence and less-tillering 1(esl1). Map-based cloning revealed that ESL1 encodes a xanthine dehydrogenase, and it was expressed in all tissues. Chlorophyll content was reduced and chloroplast maldevelopment was severe in the esl1 mutant. Mutation of ESL1 led to decreases in allantoin, allantoate, and ABA contents. Further analysis revealed that the accumulation of reactive oxygen species in esl1 resulted in decreased photosynthesis and impaired chloroplast development, along with increased sensitivity to abscisic acid and abiotic stresses. Ttranscriptome analysis showed that the ESL1 mutation altered the expression of genes involved in the photosynthesis process and reactive oxygen species metabolism.Our results suggest that ESL1 is involved in purine metabolism and the induction of leaf senescence.These findings reveal novel molecular mechanisms of ESL1 gene-mediated plant growth and leaf senescence. | Jiangmin Xu Chenyang Pan Han Lin Hanfei Ye Sheng Wang Tao Lu Qianyu Chen Kairu Yang Mei Lu Qian Qian Deyong Ren Yuchun Rao | 2022 | The Crop Journal2022，10，2： | 1 |
| 2 | The crossing numbers of K1,5,n 显示文摘 | Hanfei Mei Yuanqiu Huang | 2007 | International Journal of Mathematical Combinatorics2007，，1： | 1 |
| 3 | The crossing number of 显示文摘 | Mei Hanfei Huang Yuanqiu | 2008 | Discrete Mathmatics2008，23，3： | 1 |
| 4 | The crossing numbers of K1,5,n显示文摘 | Mei Hanfei I luang Yuanqiu | 2007 | J International Journal of Mathematical Combinatorics2007，，1： | 1 |
| 5 | The crossing number of K1,5,n 显示文摘 | Mei Hanfei Huang Yuanqiu | 2007 | International J Math Combin2007，1，1： | 1 |
| 6 | Highly Stretchable and Permeable Conductors Based on Shrinkable Electrospun Fiber Mats显示文摘Wearable on-skin electrodes or conductors should be vapor permeable,strain-insensitive,isotropically stretchable and stable under cyclic stretching.Various strategies have been proposed to prepare the required conductors up to now;however,it is a challenge to fabricate them with above properties in a simple manner.In this paper,a highly permeable and stretchable conductor based on electrospun fluorine rubber fiber mat is reported.The fibers are pre-stretched in electric field during electrospinning,and they shrink isotropically by~35-40%in area after being detached from the substrate.The obtained fiber mat conductor demonstrates high stretchability up to~170%,and the resistance changes only 0.8 under 60%strain,which is superior to many other strain-insensitive conductors.The conductor possesses high stability,no cracks or structure damage are observed after washing and cyclic stretching.Moreover,the conductor is vapor permeable with a water vapor transmission rate of~850 g m−2 day−1,which is comparable to the normal water evaporation in ambient conditions,indicating that it would not disturb the sweat evaporation when being used on skin.The conductor is successfully used as stretchable yarns and electromyography(EMG)electrodes,showing high reliability in E-textiles and on-skin applications. | Qingsong Li Chen Ding Wei Yuan Ruijie Xie Xiaomeng Zhou Yang Zhao Mei Yu Zijian Yang Jing Sun Qiong Tian Fei Han Hanfei Li Xinping Deng Guanglin Li Zhiyuan Liu | 2021 | Advanced Fiber Materials2021，3，5： | 1 |
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