您好，欢迎访问江苏省农业科学院 机构知识库！
江苏省农业科学院机构知识库

全部

  • 全部
  • 标题
  • 学者
  • 机构
  • 关键词

Evidence for down-regulation of ethanolic fermentation and K+ effluxes in the coleoptile of rice seedlings during prolonged anoxia

文献类型： 外文期刊

作者： Colmer, TD 1 ; Huang, SB 2 ; Greenway, H 2 ;

作者机构： 1.Univ Western Australia, Fac Agr, Crawley, WA 6009, Australia

2.Univ Western Australia, Fac Agr, Crawley, WA 6009, Australia; Jiangsu Acad Agr Sci, Inst Agrobiol Genet & Physiol, Nanjing 210014, Peoples R China

关键词： energy maintenance requirement;ethanolic fermentation;membrane permeability;potassium;phosphate;solute net uptake or loss

期刊名称：JOURNAL OF EXPERIMENTAL BOTANY （ 影响因子：6.992； 五年影响因子：7.86 ）

ISSN： 0022-0957

年卷期： 2001 年 52 卷 360 期

页码：

收录情况： SCI

摘要： Ethanolic fermentation, the predominant catabolic pathway in anoxia-tolerant rice coleoptiles, was manipulated in excised and 'aged' tissues via glucose feeding. Coleoptiles with exogenous glucose survived 60 h of anoxia, as evidenced by vigorous rates of K+ and phosphate not uptake and growth of roots and shoots when re-aerated. In contrast, coleoptiles without exogenous glucose showed net losses of K+ and phosphates starting 12 h after anoxia was imposed and these did not recover fully when re-aerated after 60 h of anoxia. Ethanol production (pmol g(-1) FW h(-1)) declined from about 7.5 during the first 12 h of anoxia to 5 or 2.2 after 48-60 h, in coleoptiles with or without exogenous glucose, respectively. Carbohydrate concentrations changed only slightly in anoxic coleoptiles with exogenous glucose due to net glucose uptake at 2.6 mu mol g(-1) FW h(-1). Ethanolic fermentation, and therefore ATP production, may have been down-regulated after an initial period of acclimation to anoxia in coleoptiles with exogenous glucose. Maintenance requirements for energy were assessed to be 3.4-7.6-fold lower in these anoxic coleoptiles than published estimates for non-growing aerated leaf tissues. A modest part of the required economy in energy consumption would have been derived from diminished ion transport; anoxia reduced K+ and phosphate net uptake by 70-90% in these coleoptiles. K+ efflux was 10-fold lower in anoxic than in aerated coleoptiles with exogenous glucose. Using the unidirectional efflux equation, the membrane permeability to K+ was estimated to be 17-fold lower in anoxic than in aerated coleoptiles, presumably due to predominantly closed K+ channels.

  • 相关文献

[1]Eco-physiological adaptability in mixtures of Robinia pseudoacacia and Fraxinus velutina and coastal eco-engineering. Mao, Peili,Cao, Banghua,Cao, Zhenyu,Tang, Quan,Liu, Jianmin,Shao, Hongbo,Hao, Muzheng,Zhu, Zhenbo,Shao, Hongbo.

[2]Response of oxidative stress defense systems in rice (Oryza sativa) leaves with supplemental UV-B radiation. Dai, QJ,Yan, B,Huang, SB,Liu, XZ,Peng, SB,Miranda, MLL,Chavez, AQ,Vergara, BS,Olszyk, DM. 1997

[3]Phytochelatin synthesis in Dunaliella salina induced by arsenite and arsenate under various phosphate regimes. Wang, Ya,Zheng, Yanheng,Ge, Ying,Wang, Ya,Zhang, Chunhua.

[4]A symbiotic bacterium differentially influences arsenate absorption and transformation in Dunaliella sauna under different phosphate regimes. Wang, Ya,Ge, Ying,Zhang, Chun Hua,Lin, Man Man.

[5]Copper tolerance of the biomass crops Elephant grass (Pennisetum purpureum Schumach), Vetiver grass (Vetiveria zizanioides) and the upland reed (Phragmites australis) in soil culture. Liu, Xinghua,Lou, Laiqing,Cai, Qingsheng,Shen, Yixing,Ding, Chenglong.

[6]Bioaccumulation kinetics of arsenite and arsenate in Dunaliella salina under different phosphate regimes. Wang, Ya,Zheng, Yanheng,Ge, Ying,Wang, Ya,Zhang, Chunhua.

[7]Characterization and Application of Magnetic Biochars from Corn Stalk by Pyrolysis and Hydrothermal Treatment. . 2017

[8]Intraspecific variation in potassium uptake and utilization among sweet potato (Ipomoea batatas L.) genotypes. Wang, Ji Dong,Wang, Ji Dong,Wang, Huoyan,Zhou, Jianmin,Chen, Xiaoqin,Wang, Ji Dong,Zhang, Yunchun.

[9]Potassium partitioning and redistribution as a function of K-use efficiency under K deficiency in sweet potato (Ipomoea batatas L.). Wang, Ji Dong,Hou, Pengfu,Dong, Yue,Hui, Zhang,Ma, Hongbo,Xu, Xian Ju,Nin, Yunwang,Ai, Yuchun,Zhang, Yongchun,Zhu, Guo Peng.

[10]KT/HAK/KUP potassium transporter genes differentially expressed during fruit development, ripening, and postharvest shelf-life of 'Xiahui6' peaches. Song, Zhizhong,Guo, Shaolei,Zhang, Chunhua,Zhang, Binbin,Ma, Ruijuan,Yu, Mingliang,Song, Zhizhong,Guo, Shaolei,Zhang, Chunhua,Zhang, Binbin,Ma, Ruijuan,Yu, Mingliang,Korir, Nicholas Kibet.

[11]HETEROLOGOUS EXPRESSION OF AN ALLIGATORWEED HIGH-AFFINITY POTASSIUM TRANSPORTER GENE ENHANCES SALINITY TOLERANCE IN ARABIDOPSIS THALIANA. Song, Zhizhong,Yang, Shunying,Jin, Man,Su, Yanhua,Song, Zhizhong,Yang, Shunying,Jin, Man,Zhu, Hong,Zhu, Hong. 2014

[12]Effect of Application Ratio of Potassium over Nitrogen on Litchi Growth and Fruit Quality. Li, G. L.,Yang, B. M.,He, Z. H.,Zhou, C. M.,Tu, S. H.. 2014

[13]Effects of potassium fertilization on winter wheat under different production practices in the North China Plain. Zhang, Xiying,Zhang, Weifeng,Chen, Xinping,Zhang, Fusuo,Ru, Shuhua,Xiao, Kai,Assaraf, Menachem,Imas, Patricia,Magen, Hillel. 2013

[14]Potassium contributes to zinc stress tolerance in peach (Prunus persica) seedlings by enhancing photosynthesis and the antioxidant defense system. Song, Z. Z.,Guo, S. L.,Yang, Y.,Ma, R. J.,Yu, M. L.,Song, Z. Z.,Guo, S. L.,Yang, Y.,Ma, R. J.,Yu, M. L.,Duan, C. L.,Feng, Y. F.. 2015

作者其他论文 更多>>
置顶
购物车
反馈

© 京ICP备09089781号-29 主办单位：江苏省农业科学院

学术资源： 中国农业科学院 农业专业知识服务系统 农科联盟资源共建共享平台 中国农业科技文献与信息服务平台 中国农业期刊集成服务平台