In recent years,biochar has attracted considerable attention for soil quality improvement and carbon sequestration due to its unique physicochemical properties.However,the mechanism by which biochar application negati...In recent years,biochar has attracted considerable attention for soil quality improvement and carbon sequestration due to its unique physicochemical properties.However,the mechanism by which biochar application negatively affects the growth of crop seedlings has not been fully investigated.In this study,a hydroponic experiment was conducted to evaluate the response of rice,wheat,and corn seedlings to biochar application(CK,0 g/L;BC1,0.5 g/L;and BC2,1.0 g/L).Compared with the CK treatment,the BC1 and BC2 treatments decreased the fresh shoot and root weights of rice and corn seedlings(P<0.05),but there was no significant effect on wheat seedlings(P>0.05).For the contents of nutrient elements in seedlings,both BC1 and BC2 treatments hindered the roots from absorbing Fe and Cu and increased the uptake of Ca and Mn.Compared with the CK treatment,the translocation factor(TF)values of Ca,Mn,and Zn were significantly decreased especially in rice seedlings(35.3%-36.8%,68.7%-76.5%,and 29.8%-22.0%,respectively)under the BC1 and BC2 treatments,while only Mn was significantly decreased in wheat and corn seedlings(P<0.05).Transmission electron microscope(TEM)analysis of root cross-sections showed that nano-sized biochar particles(10~23 nm)were found in the root cells under BC2 treatment conditions.Our findings reveal that a large amount of biochar application can reduce nutrient absorption and translocation,and hinder rice,wheat,and corn seedlings,particularly rice seedling,in hydroponic system.展开更多
Metal-based engineered nanomaterials(MENMs)are increasingly being used in people’s working lives.Although MENMs have important effects on soil ecosystem and play an important role in solving soil environmental proble...Metal-based engineered nanomaterials(MENMs)are increasingly being used in people’s working lives.Although MENMs have important effects on soil ecosystem and play an important role in solving soil environmental problems,the hazards associated with MENMs cannot be ignored.Therefore,more and more scholars have studied the behavior and effects of nanomaterials in soils in recent years.In this review,we explore the articles on MENMs and soil ecosystem retrieved from various databases from 2013 to 2022.We discuss the mechanisms of MENM toxicity,the current state of soil ecosystem,the ecological effects of MENMs on soil microbes,earthworms,and plants,and the ways by which soil organisms take up MENMs.We now know that although MENMs have positive effects on soil ecosystem,their potential hazards are not negligible.Therefore,it is necessary to investigate the effects of MENMs on soil organisms.Meanwhile,we should pay more attention to the negative effects of MENMs on soil ecosystem while exploring their positive effects on soil ecosystem in future research.展开更多
As the climate worsens and the demand for food grows,so does the interest in nanoagriculture.The interaction between plants and nanomaterials(NMs)has been extensively and intensively examined.However,stopping at the o...As the climate worsens and the demand for food grows,so does the interest in nanoagriculture.The interaction between plants and nanomaterials(NMs)has been extensively and intensively examined.However,stopping at the outcome of a phenomenon is often insufficient.Therefore,we introduce three important processes of nanoparticleplant interactions:translocation,transformation,and plant metabolism.During the migration of nanoparticles,size and surface electrical properties are the main determining factors.Additionally,the interaction of nanoparticles with cell membranes is another key aspect of research.The transformation of nanoparticles in plants is mainly due to redox substances.The way that nanoparticles affect plant metabolism may be able to shed light on the interaction of nanoparticles with plants.This review adds to the existing knowledge on the design of nanoagrochemicals and summarizes the mechanism of interaction of NMs with plants.In this way,NMs can be used for their beneficial effects and thus contribute to the maintenance of food security and sustainable development.展开更多
Compared with conventional fertilizers,nano fertilizer has many advantages such as controlled release,controlled or slow release of nutrients,high efficiency of nutrition use,cheap,and little polluting of the environm...Compared with conventional fertilizers,nano fertilizer has many advantages such as controlled release,controlled or slow release of nutrients,high efficiency of nutrition use,cheap,and little polluting of the environment.The use of fertilizers with nanotechnology is a new field in agriculture,and it is a promising and cost-effective substitute for conventional fertilizers to improve the productivity of the world’s food supply.Photosynthesis is an essential biochemical reaction on Earth.Improving photosynthesis,the basic process for light’s transformation into chemical energy is one of the most important areas of research for improving agricultural output and tackling world food security.Nano fertilizers can promote plant photosynthesis,improve crop photosynthetic efficiency,increase plant biomass,improve plant stress resistance,improve nutrient uptake efficiency,and encourage plant growth and development due to their tunable surface properties,special electronic,magnetic,and optical properties,and other characteristics.It can be seen that nano fertilizers and improving photosynthetic efficiency in plants are a hot topic of concern.Therefore,an overview of the effects of nano fertilizers on plant photosynthesis is given in this paper.These effects include the ability to increase biomass,pigment and gas openness,photosynthetic efficiency,and plant resistance to stress.On the other hand,improper use of nano fertilizers can have the opposite effect,inhibiting plant photosynthesis.展开更多
Lithium's(Li)ubiquitous distribution in the environment is a rising concern due to its rapid proliferation in the modern electronic industry.Li enigmatic entry into the terrestrial food chain raises many questions...Lithium's(Li)ubiquitous distribution in the environment is a rising concern due to its rapid proliferation in the modern electronic industry.Li enigmatic entry into the terrestrial food chain raises many questions and uncertainties that may pose a grave threat to living biota.We examined the leverage existing published articles regarding advances in global Li resources,interplay with plants,and possible involvement with living organisms,especially humans and animals.Globally,Li concentration(<10 e300 mg kg1)is detected in agricultural soil,and their pollutant levels vary with space and time.High mobility of Li results in higher accumulation in plants,but the clear mechanisms and specific functions remain unknown.Our assessment reveals the causal relationship between Li level and biota health.For example,lower Li intake(<0.6 mM in serum)leads to mental disorders,while higher intake(>1.5 mM in serum)induces thyroid,stomach,kidney,and reproductive system dysfunctions in humans and animals.However,there is a serious knowledge gap regarding Li regulatory standards in environmental compartments,and mechanistic approaches to unveil its consequences are needed.Furthermore,aggressive efforts are required to define optimum levels of Li for the normal functioning of animals,plants,and humans.This review is designed to revitalize the current status of Li research and identify the key knowledge gaps to fight back against the mountainous challenges of Li during the recent digital revolution.Additionally,we propose pathways to overcome Li problems and develop a strategy for effective,safe,and acceptable applications.展开更多
基金supported by the China Agriculture Research System of Ministry of Finance (MOF)and Ministry of Agriculture and Rural Affairs (MARA) (No.CARS-23-B15).
文摘In recent years,biochar has attracted considerable attention for soil quality improvement and carbon sequestration due to its unique physicochemical properties.However,the mechanism by which biochar application negatively affects the growth of crop seedlings has not been fully investigated.In this study,a hydroponic experiment was conducted to evaluate the response of rice,wheat,and corn seedlings to biochar application(CK,0 g/L;BC1,0.5 g/L;and BC2,1.0 g/L).Compared with the CK treatment,the BC1 and BC2 treatments decreased the fresh shoot and root weights of rice and corn seedlings(P<0.05),but there was no significant effect on wheat seedlings(P>0.05).For the contents of nutrient elements in seedlings,both BC1 and BC2 treatments hindered the roots from absorbing Fe and Cu and increased the uptake of Ca and Mn.Compared with the CK treatment,the translocation factor(TF)values of Ca,Mn,and Zn were significantly decreased especially in rice seedlings(35.3%-36.8%,68.7%-76.5%,and 29.8%-22.0%,respectively)under the BC1 and BC2 treatments,while only Mn was significantly decreased in wheat and corn seedlings(P<0.05).Transmission electron microscope(TEM)analysis of root cross-sections showed that nano-sized biochar particles(10~23 nm)were found in the root cells under BC2 treatment conditions.Our findings reveal that a large amount of biochar application can reduce nutrient absorption and translocation,and hinder rice,wheat,and corn seedlings,particularly rice seedling,in hydroponic system.
基金supported by the National Key R&D Program of China(Nos.2017YFD0801300 and 2017YFD 0801103)the National Natural Science Foundation of China(No.41130526)。
文摘Metal-based engineered nanomaterials(MENMs)are increasingly being used in people’s working lives.Although MENMs have important effects on soil ecosystem and play an important role in solving soil environmental problems,the hazards associated with MENMs cannot be ignored.Therefore,more and more scholars have studied the behavior and effects of nanomaterials in soils in recent years.In this review,we explore the articles on MENMs and soil ecosystem retrieved from various databases from 2013 to 2022.We discuss the mechanisms of MENM toxicity,the current state of soil ecosystem,the ecological effects of MENMs on soil microbes,earthworms,and plants,and the ways by which soil organisms take up MENMs.We now know that although MENMs have positive effects on soil ecosystem,their potential hazards are not negligible.Therefore,it is necessary to investigate the effects of MENMs on soil organisms.Meanwhile,we should pay more attention to the negative effects of MENMs on soil ecosystem while exploring their positive effects on soil ecosystem in future research.
基金supported by the National Key R&D Program of China(2017YFD0801300,2017YFD0801103)the Key National Natural Science Foundation of China(No.41130526)+1 种基金Professor workstation in Yuhuangmiao Town,Shanghe County,China Agricultural UniversityProfessor Workstation in Sunji Town,Shanghe County,China Agricultural University.
文摘As the climate worsens and the demand for food grows,so does the interest in nanoagriculture.The interaction between plants and nanomaterials(NMs)has been extensively and intensively examined.However,stopping at the outcome of a phenomenon is often insufficient.Therefore,we introduce three important processes of nanoparticleplant interactions:translocation,transformation,and plant metabolism.During the migration of nanoparticles,size and surface electrical properties are the main determining factors.Additionally,the interaction of nanoparticles with cell membranes is another key aspect of research.The transformation of nanoparticles in plants is mainly due to redox substances.The way that nanoparticles affect plant metabolism may be able to shed light on the interaction of nanoparticles with plants.This review adds to the existing knowledge on the design of nanoagrochemicals and summarizes the mechanism of interaction of NMs with plants.In this way,NMs can be used for their beneficial effects and thus contribute to the maintenance of food security and sustainable development.
基金funded by the National Key R&D Program of China(2017YFD0801300,2017YFD0801103)the National Natural Science Foundation of China(32001014).
文摘Compared with conventional fertilizers,nano fertilizer has many advantages such as controlled release,controlled or slow release of nutrients,high efficiency of nutrition use,cheap,and little polluting of the environment.The use of fertilizers with nanotechnology is a new field in agriculture,and it is a promising and cost-effective substitute for conventional fertilizers to improve the productivity of the world’s food supply.Photosynthesis is an essential biochemical reaction on Earth.Improving photosynthesis,the basic process for light’s transformation into chemical energy is one of the most important areas of research for improving agricultural output and tackling world food security.Nano fertilizers can promote plant photosynthesis,improve crop photosynthetic efficiency,increase plant biomass,improve plant stress resistance,improve nutrient uptake efficiency,and encourage plant growth and development due to their tunable surface properties,special electronic,magnetic,and optical properties,and other characteristics.It can be seen that nano fertilizers and improving photosynthetic efficiency in plants are a hot topic of concern.Therefore,an overview of the effects of nano fertilizers on plant photosynthesis is given in this paper.These effects include the ability to increase biomass,pigment and gas openness,photosynthetic efficiency,and plant resistance to stress.On the other hand,improper use of nano fertilizers can have the opposite effect,inhibiting plant photosynthesis.
基金funded by the The 111 project of the Education Ministry of China(B18053)The National Natural Science Foundation(32130081).
文摘Lithium's(Li)ubiquitous distribution in the environment is a rising concern due to its rapid proliferation in the modern electronic industry.Li enigmatic entry into the terrestrial food chain raises many questions and uncertainties that may pose a grave threat to living biota.We examined the leverage existing published articles regarding advances in global Li resources,interplay with plants,and possible involvement with living organisms,especially humans and animals.Globally,Li concentration(<10 e300 mg kg1)is detected in agricultural soil,and their pollutant levels vary with space and time.High mobility of Li results in higher accumulation in plants,but the clear mechanisms and specific functions remain unknown.Our assessment reveals the causal relationship between Li level and biota health.For example,lower Li intake(<0.6 mM in serum)leads to mental disorders,while higher intake(>1.5 mM in serum)induces thyroid,stomach,kidney,and reproductive system dysfunctions in humans and animals.However,there is a serious knowledge gap regarding Li regulatory standards in environmental compartments,and mechanistic approaches to unveil its consequences are needed.Furthermore,aggressive efforts are required to define optimum levels of Li for the normal functioning of animals,plants,and humans.This review is designed to revitalize the current status of Li research and identify the key knowledge gaps to fight back against the mountainous challenges of Li during the recent digital revolution.Additionally,we propose pathways to overcome Li problems and develop a strategy for effective,safe,and acceptable applications.
