欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
采用微波预处理菘蓝（Isatis indigotica Fort）种子，待种子出土萌发后进行UV-B辐射（10．08kJ m^2d^-1，PAR=220μmol m^-2d^-1）处理6d，研究了经不同时间微波辐照后菘蓝种子发育而成的幼苗在UV-B辐射下非酶类抗氧化剂（紫外吸收物质、花青素甙、谷胱甘肽、抗坏血酸和脯氨酸）的生物合成情况．结果显示，在UV-B辐射条件下，4种微波预处理均能不同程度促进紫外吸收物质、化青素甙、谷胱甘肽、抗坏血酸和脯氨酸的生物合成，降低丙二醛含量，增强幼苗对UV-B伤害的抗性．这表明，适当时间的微波预处理可以提高植物对增强UV-B辐射的抵抗能力，与此同时，过长时间微波处理也会抑制植物的生理生化代谢和非酶类抗氧化剂的生物合成，加重对植物的伤害．因此，微波具有相悖的防护效应，存生物学上应用时其剂量的大小十分关键．表1参17
英文摘要：
The effects of different time lengths of microwave radiation on biosynthesis of non-enzymatic antioxidants in Isatis indigotica seedlings with enhanced UV-B damages were studied. The seeds soaked with water for 3 h were exposed to microwave, and then subjected to enhanced UV-B radiation （10.08 kJ m^-2 d^-1, PAR=220 /amol m^-2 d ^-1） for 6 d after the seeds germination. The results showed that four treatments with different time improved the resistant capability to UV-B radiation by increasing the concentration of GSH, UV absorbance, anthocyanin, AsA and proline, and decreasing the concentration of MDA and GSSG. Microwave radiation of suitable doses could stimulate the synthesis of non-enzymatic antioxidants and improve the resistant capability to UV-B radiation. However, bad effects were also caused by microwave radiation. Therefore, the dose to be selected for applying in agriculture is the key. Tab 1, Ref 17
同期刊论文项目
同项目期刊论文
Species, valve size, and pretreatment effects on delta O-18 and delta C-13 values of ostracod valves
Sediment geochemistry of Lake Daihai, north-central China: implications for catchment weathering and
Geochronology of a surface core in the northern basin of Lake Qinghai: Evidence from210Pb and137Cs r
Evaluation of oxygen isotopes in carbonate as an indicator of lake evolution in arid areas: The mode
Isatis indigotica seedlings derived from laser stimulated seeds showed improved resistance to elevat
IMPACT OF LAND USE AND LAND COVER CHANGE ON ENVIRONMENTAL DEGRADATION IN LAKE QINGHAI WATERSHED, NOR
Holocene precipitation and temperature variations in the East Asian
monsoonal margin from pollen dat
Lake surface fluctuations since the late glaciation at Lake Daihai, North central China: A direct in
Constraints of authigenic carbonates on trace elements (Sr, Mg) of lacustrine ostracod shells in pal
Holocene precipitation and temperature variations in the East Asian monsoonal margin from pollen dat
Multi-proxy evidence for Late Pleistocene-Holocene climatic and environmental changes in Lop-Nur Xin
Seasonal Variations and Evidence for the Effectiveness of Pollution Controls on Water-Soluble Inorga
Oxygen isotope fractionation in the ostracod Eucypris mareotica: results from a culture experiment a
Holocene climate changes in the mid-high latitude monsoon margin reflected by the pollen record from
Climate implications of major geochemical elements in the Holocene sediments of the North and East C
Weathering, Sr fluxes, and controls on water chemistry in the Lake Qinghai catchment, NE Tibetan Pla
Temporal trends and variability of daily maximum and minimum, extreme temperature events, and growin
Holocene vegetation characteristics of the southern Loess Plateau in the Weihe River valley in China
Geochronology of a surface core in the northern basin of Lake Qinghai: Evidence from 210Pb and 137Cs
Contribution of inherent organic carbon to the bulk δ13C signal in loess deposits from the arid west
Abrupt shifts in the Indian monsoon during the Pliocene marked by high-resolution terrestrial record
Variation of airborne bacteria and fungi at Emperor Qin's Terra-Cotta Museum, Xi'an, China, during t
位置：