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| 1 | Strigolactones interact with other phytohormones to modulate plant root growth and development显示文摘Strigolactones(SLs),which are biosynthesized mainly in roots,modulate various aspects of plant growth and development.Here,we review recent research on the role of SLs and their cross-regulation with auxin,cytokinin,and ethylene in the modulation of root growth and development.Under nutrientsufficient conditions,SLs regulate the elongation of primary roots and inhibit adventitious root formation in eudicot plants.SLs promote the elongation of seminal roots and increase the number of adventitious roots in grass plants in the short term,while inhibiting lateral root development in both grass and eudicot plants.The effects of SLs on the elongation of root hairs are variable and depend on plant species,growth conditions,and SL concentration.Nitrogen or phosphate deficiency induces the accumulation of endogenous SLs,modulates root growth and development.Genetic analyses indicate cross-regulation of SLs with auxin,cytokinin,and ethylene in regulation of root growth and development.We discuss the implications of these studies and consider their potential for exploiting the components of SL signaling for the design of crop plants with more efficient soil-resource utilization. | Huwei Sun Weiqiang Li David J.Burritt Hongtao Tian Heng Zhang Xiaohan Liang Yuchen Miao Mohammad Golam Mostofa Lam-Son Phan Tran | 2022 | The Crop Journal2022，10，6： | 2 |
| 2 | Strigolactone and gibberellin signaling coordinately regulate metabolic adaptations to changes in nitrogen availability in rice显示文摘Modern semi-dwarf rice varieties of the“Green Revolution”require a high supply of nitrogen(N)fertilizer to produce high yields.A better understanding of the interplay between N metabolism and plant developmental processes is required for improved N-use efficiency and agricultural sustainability.Here,we show that strigolactones(SLs)modulate root metabolic and developmental adaptations to low N availability for ensuring efficient uptake and translocation of available N.The key repressor DWARF 53(D53)of the SL signaling pathway interacts with the transcription factor GROWTH-REGULATING FACTOR 4(GRF4)and prevents GRF4 from binding to its target gene promoters.N limitation induces the accumulation of SLs,which in turn promotes SL-mediated degradation of D53,leading to the release of GRF4 and thus promoting the expression of genes associated with N metabolism.N limitation also induces degradation of the DELLA protein SLENDER RICE 1(SLR1)in an D14-and D53-dependent manner,effectively releasing GRF4 from competitive inhibition caused by SLR1.Collectively,our findings reveal a previously unrecognized mechanism underlying SL and gibberellin crosstalk in response to N availability,advancing our understanding of plant growth–metabolic coordination and facilitating the design of the strategies for improving N-use efficiency in high-yield crops. | Huwei Sun Xiaoli Guo Xiuli Zhu Pengyuan Gu Wei Zhang Wenqing Tao Daojian Wang Yunzhe Wu Quanzhi Zhao Guohua Xu Xiangdong Fu Yali Zhang | 2023 | Molecular Plant2023，16，3： | 1 |
| 3 | The miR167-OsARF12 module regulates rice grain filling and grain size downstream of miR159显示文摘Grain weight and quality are always determined by grain filling.Plant microRNAs have drawn attention as key targets for regulation of grain size and yield.However,the mechanisms that underlie grain size regulation remain largely unclear because of the complex networks that control this trait.Our earlier studies demonstrated that suppressed expression of miR167(STTM/MIM167)substantially increased grain weight.In a field test,the yield increased up to 12.90%-21.94% because of a significantly enhanced grain filling rate.Here,biochemical and genetic analyses revealed the regulatory effects of miR159 on miR167 expression.Further analysis indicated that OsARF12 is the major mediator by which miR167 regulates rice grain filling.Overexpression of OsARF12 produced grain weight and grain filling phenotypes resembling those of STTM/MIM167 plants.Upon in-depth analysis,we found that OsARF12 activates OsCDKF;2 expression by directly binding to the TGTCGG motif in its promoter region.Flow cytometry analysis of young panicles from OsARF12-overexpressing plants and examination of cell number in cdkf;2 mutants verified that OsARF12 positively regulates grain filling and grain size by targeting OsCDKF;2.Moreover,RNA sequencing results suggested that the miR167-OsARF12 module is involved in the cell development process and hormone pathways.OsARF12-overexpressing plants and cdkf;2 mutants exhibited enhanced and reduced sensitivity to exogenous auxin and brassinosteroid(BR)treatment,confirming that targeting of OsCDKF;2 by OsARF12 mediates auxin and BR signaling.Our results reveal that the miR167-OsARF12 module works downstream of miR159 to regulate rice grain filling and grain size via OsCDKF;2 by controlling cell division and mediating auxin and BR signals. | Yafan Zhao Xiaofan Zhang Yuan Cheng Xiangxiang Du Sachin Teotia Chunbo Miao Huwei Sun Guoqiang Fan Guiliang Tang Hongwei Xue Quanzhi Zhao Ting Peng | 2023 | Plant Communications2023，4，5： | 1 |
| 4 | Strigolactone regulates nitrogen-phosphorus balance in rice显示文摘Phosphorus(P) is one of the essential elements for growth and development of crops.Modern agriculture depends heavily on the application of large amounts of fertilizers,including P fertilizers.Excessive application of P fertilizers causes severe environmental pollution.Additionally,phosphate(Pi) mining is a non-renewable resource(Raghothama,1999). | Huwei Sun Hanyun Wang Chengcai Chu | 2024 | Science China(Life Sciences)2024，67，2： | 0 |
| 5 | Theoretical study of the electroactive bistable actuator and regulation methods显示文摘Dielectric elastomer actuators have attracted growing interest for soft robot due to their large deformation and fast response.However,continuous high-voltage loading tends to cause the electric breakdown of the actuator due to heat accumulation,and viscoelasticity complicates precise control.The snap-through bistability of the Venus flytrap is one of the essential inspirations for bionic structure,which can be adopted to improve the shortcoming of dielectric elastomer actuators and develop a new actuation structure with low energy consumption,variable configuration,and multi-mode actuation.Hence,in this paper,the structural design principles of electroactive bistable actuators are first presented based on the total potential energy of the structure.Following that,a feasible design parameter region is provided,the influence of crucial parameters on the actuation stroke,trigger voltage,and actuation charge are discussed.Finally,according to the coupling relationship between the bending stiffness and the bistable property of the actuator,the adjusting methods of bistable actuation are explored.A qualitative experiment was performed to verify the feasibility and correctness of the bistable design methodology and the actuation regulation strategy.This study provides significant theoretical guidance and technical support for developing and applying dielectric elastomer actuators with multi-mode,high-performance,and long-life characteristics. | Wenjie Sun Huwei Liang Fei Zhang Bo Li | 2023 | International Journal of Smart and Nano Materials2023，14，1： | 0 |
| 6 | Nitrate confers rice adaptation to high ammonium by suppressing its uptake but promoting its assimilation显示文摘Dear Editor,earEaltor,Nitrogen(N)is the most important macronutrient driving plant growth and development.For higher plants,inorganic N including nitrate(NO_(3)^(-))and ammonium(NH_(4)^(+))are predominant N sources(Hu et al.,2023).Nitrate needs to be firstly reduced into ammonium to implement its assimilation,thus requiring a higher energy consumption than ammonium,making ammonium more cost effective for plants.However,ammonium usually causes severe growth retardation of plants under high concentration,which is known as ammonium toxicity.The concentrations of nitrate and ammonium greatly vary in different soil environments.Nitrate is the major inorganic N form in dry land,while ammonium accounts for thehighest proportion of inorganic N in the paddy field,where nitrification is suppressed(Haynes and Goh,1978).Although nitrogen is generally one of the most important contributing factors for yield increase,irrational fertilization strategies can cause negative effects. | Yu Yan Zhihua Zhang Huwei Sun Xiujie Liu Junpeng Xie Yahong Qiu Tuanyao Chai Chengcai Chu Bin Hu | 2023 | Molecular Plant2023，16，12： | 0 |
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