| 1 | Effects of grass contour hedgerow systems on controlling soil erosion in red soil hilly areas,Southeast China显示文摘Soil erosion by water is a well-recognized serious environmental problem in the world.While contour hedgerow systems are an effective method for soil water conservation,there are a few studies on its effect in the red soil hilly areas in Southeast China.With a fixed field experiment,we constructed a runoff plot at hilly area in Zhuji County,Zhejiang province,to evaluate the effect of the grass hedgerows in soil water conservation,and to determine the optimized hedgerow patterns.Hemerocallis citrine(HC)and Ophiopogon japonicas(OJ) were selected to build the hedgerows in patterns of one row and two rows.The REE method was used to trace the source of the sediment for a better understanding of the characteristic and mechanism of erosion with hedgerows control.Our results showed that(1) hedgerows reduced erosion and surface runoff by 31.99-67.22%and 15.44-45.11%,respectively;(2) hedgerows delayed the development of rills;(3) hedgerows reduced the soil nutrients loss;(4) hedgerows reshaped the soil physical properties,especially in increasing > 0.25 mm water-stable aggregates.Taken together,our results suggest that two-row OJ is the optimized contour hedgerow pattern in the experiment condition,and downward sloping land should have the highest priority to take measures for soil water conservation.This research comprehensively studied the effects and mechanism of contour hedgerows in controlling soil and water loss in red soil hilly areas,Southeast China,so that the practice of soil and water conservation can be implemented more effectively in these areas. | Ji Fan Lijiao Yan Pei Zhang Ge Zhang | 2015 | International Journal of Sediment Research2015，30，2： | 13 |
| 2 | CmWRKY6-1-CmWRKY15-like transcriptional cascade negatively regulates the resistance to fusarium oxysporum infection in Chrysanthemum morifolium显示文摘Chrysanthemum Fusarium wilt is a soil-borne disease that causes serious economic losses to the chrysanthemum industry.However,the molecular mechanism underlying the response of chrysanthemum WRKY to Fusarium oxysporum infection remains largely unknown.In this study,we isolated CmWRKY6–1 from chrysanthemum‘Jinba’and identified it as a transcriptional repressor localized in the nucleus via subcellular localization and transcriptional activation assays.We found that CmWRKY6–1 negatively regulated resistance to F.oxysporum and affected reactive oxygen species(ROS)and salicylic acid(SA)pathways using transgenic experiments and transcriptomic analysis.Moreover,CmWRKY6–1 bound to the W-box element on the CmWRKY15-like promoter and inhibited its expression.Additionally,we observed that CmWRKY15-like silencing in chrysanthemum reduced its resistance to F.oxysporum via transgenic experiments.In conclusion,we revealed the mechanism underlying the CmWRKY6–1–CmWRKY15-like cascade response to F.oxysporum infection in chrysanthemum and demonstrated that CmWRKY6–1 and CmWRKY15-like regulates the immune system. | Weihao Miao Xiangyu Xiao Yuean Wang Lijiao Ge Yanrong Yang Ye Liu Yuan Liao Zhiyong Guan Sumei Chen Weimin Fang Fadi Chen Shuang Zhao | 2023 | Horticulture Research2023，10，7： | 0 |
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