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您的检索式：作者名="Guo Zongshan"
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| 1 | Exposures to temperature beyond threshold disproportionately reduce vegetation growth in the northern hemisphere显示文摘In recent decades,terrestrial vegetation in the northern hemisphere(NH)has been exposed to warming and more extremely high temperatures.However,the consequences of these changes for terrestrial vegetation growth remain poorly quantifed and understood.By examining a satellite-based vegetation index,tree-ring measurements and land-surface model simulations,we discovered a consistent convex patern in the responses of vegetation growth to temperature exposure(TE)for forest,shrub and grass in both the temperate(30°-50°N)and boreal(50°-70°N)NH during the period of 1982-2012.Te response of vegetation growth to TE for the three vegetation types in both the temperate and boreal NH increased convergently with increasing temperature,until vegetation type-dependent temperature thresholds were reached.A TE beyond these temperature thresholds resulted in disproportionately weak positive or even strong negative responses.Vegetation growth in the boreal NH was more vulnerable to extremely high-temperature events than vegetation growth in the temporal NH.Te non-linear responses discovered here provide new insights into the dynamics of northern terrestrial ecosystems in a warmer world. | Xiuchen Wu Weichao Guo Hongyan Liu Xiaoyan Li Changhui Peng Craig D.Allen Cicheng Zhang Pei Wang Tingting Pei Yujun Ma Yuhong Tian Zhaoliang Song Wenquan Zhu Yang Wang Zongshan Li Deliang Chen | 2019 | National Science Review2019，6，4： | 0 |
| 2 | Expression Characteristics and Borer Resistance of Bt Gene of Transgenic cry1C~* Super Japonica Rice显示文摘[Objective] The paper was to study the expression characteristics and borer resistance of Bt gene of Songjing 9(1C~*). [Method] With super japonica rice Songjing 9 as the receptor, transgenic cry1C~* super japonica rice Songjing 9(1C~*) regulated by ubi promoter was created by agrobacterium-mediated genetic transformation method. Ten strains of transgenic super japonica rice formed from different transformation events were planted in the field; the Bt-m RNA of leaf, stem-sheath and young spikelet at booting stage were detected by real-time fluorescent quantitative PCR; the Bt protein content of leaf, stem-sheath and young spikelet and harvested brown rice were detected by enzyme-linked immunosorbent assay(ELISA); the white head rate damaged by Chilo suppressalis was manually investigated. [Result] The Bt-m RNA and Bt protein content of various organs and Bt protein content of mature brown rice at booting stage of Songjing 9(1C~*) significantly differed among strains; there was no correlation relationship in Bt-m RNA and Bt protein content between leaf and stem-sheath, between leaf and young spikelet, and between stem-sheath and young spikelet; there was no relation between Bt-m RNA or Bt protein content of leaf, stem-sheath and young spikelet and Bt protein content of brown rice; there was positive correlation between Bt-m RNA and Bt protein content in the same organ such as leaf, stem-sheath and young spikelet at booting stage; such strains as Songjing 9(1C~*), whether the Bt gene expression was high or low, showed good resistance against C. suppressalis.This indicated that there were differences in Bt gene expression in different strains of transgenic cry1C~* super japonica rice or different organs of the same strain; there was no relation in Bt gene expression among different organs; the Bt-m RNA and protein content of the same organ usually had consistent expression; the Bt gene expression of various organs had nothing to do with the Bt protein content of brown rice. [Conclusion] The Bt gene and its expression cassette can meet the requirement of cultivating japonica rice varieties against stem borers. | Li Rongtian Guo Zongshan Liu Changhua | 2018 | Plant Diseases and Pests2018，9，1： | 0 |
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