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Strigolactones interact with other phytohormones to modulate plant root growth and development

The Crop Journal 2022年第6期10卷 1517-1527页

作者： Huwei Sun Weiqiang Li David J.Burritt Hongtao Tian Heng Zhang Xiaohan Liang Yuchen Miao mohammad Golam Mostofa lam-son Phan Tran Laboratory of Rice Biology in Henan Province Collaborative Innovation Center of Henan Grain CropsCollege of AgronomyHenan Agricultural UniversityZhengzhou 450046HenanChina Jilin Da’an Agro-ecosystem National Observation Research Station Changchun Jingyuetan Remote Sensing Experiment StationKey Laboratory of Mollisols AgroecologyNortheast Institute of Geography and AgroecologyChinese Academy of SciencesChangchun 130102JilinChina State Key Laboratory of Cotton Biology Henan Joint International Laboratory for Crop Multi-Omics ResearchSchool of Life SciencesHenan UniversityKaifeng 475001HenanChina d Department of Botany University of OtagoDunedin 9054New Zealand institute of Genomics for Crop Abiotic Stress Tolerance Department of Plant and Soil ScienceTexas Tech UniversityLubbockTX 79409USA institute of Research and Development Duy Tan University03 Quang TrungDa Nang 550000Vietnam

Strigolactones(SLs),which are biosynthesized mainly in roots,modulate various aspects of plant growth and ***,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 *** nutrientsufficient conditions,SLs regulate the elongation of primary roots and inhibit adventitious root formation in eudicot *** 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 *** effects of SLs on the elongation of root hairs are variable and depend on plant species,growth conditions,and SL *** or phosphate deficiency induces the accumulation of endogenous SLs,modulates root growth and *** analyses indicate cross-regulation of SLs with auxin,cytokinin,and ethylene in regulation of root growth and *** 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.

关键词： Cross-regulation Development Phytohormones Roots Signaling Strigolactones

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Fabrication of Porous Mg-Zn Scaffold through Modified Replica Method for Bone Tissue Engineering

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Journal of Bionic Engineering 2018年第5期15卷 907-913页

作者： amir Hamed Aghajanian Bijan Abbasi Khazaei mohammad Khodaei mohammad Rafienia Department of Materials Engineering Faculty of Engineering Razi University Kermanshah Iran Dental Research Center School of Dentistry Isfahan University of Medical Sciences Isfahan 81746-73461 Iran Biosensor Research Center lsfahan University of Medical Sciences Isfahan 81744176 Iran

Biodegradable scaffolds are essential parts in hard tissue engineering. A highly porous magnesium-zinc （Mg-Zn 4 wt.%） scaffold with different Mg-Zn powder to liquid media ratios （50 wt.%, 70 wt.% and 90 wt.%） and different concentrations of ethanol （0 vol.%, 10 vol.%, 20 vol.% and 40 vol.%） were prepared through modified replica method. The mechanical properties were assessed through compression test and the structures of scaffolds were examined by Scanning Electron Microscope （SEM）. Results show that, the increase in Mg-Zn powder to liquid media ratio （50 wt.% to 90 wt.%） in ethanol free slurry, increases the thickness of struts （37 lam to 74 lam） and the plateau stress （0.5 MPa to 1.4 MPa）. The results obtained from X-ray Diffractometry （XRD） and compression test indicate that consuming ethanol in liquid media of replica, results in higher plateau stress by 46% due to less Mg-water reaction and no formation of Mg（OH）2 in the scaffold. The results of porosity measurement indicate that water-ethanol mixture composition and different solid fractions have no significant effects on true and apparent porosities of the fabricated scaffolds.

关键词： porous magnesium scaffold replica method Mg-Zn powder to water ratio mechanical properties

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impact of surface roughness,surface charge,and temperature on sandstone wettability alteration by nanoparticles

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Petroleum Science 2023年第5期20卷 2852-2863页

作者： Bingjun Zhang Kaustubh Rane mohammad Piri.lamia Goual lam Research Corporation 11361 SW Leveton Dr.TualatinOR97062USA Champion X Chemical Technologies 11177 S.Stadium Dr.SugarlandTX77478USA Center of innovation for Flow through Porous Media Dept.4311University of Wyoming1000 E.University AvenueLaramieWY82071USA Department of Energy and Petroleum Engineering Dept.3295University of Wyoming1000 E.University AvenueLaramieWY82071USA

The wettability of rocks affects the balance between capillary and viscous forces during multiphase flow through porous media,which in turn determines the fluid displacement process governing the recovery of oil from subsurface *** this work,the mechanism of wettability reversal of aged synthetic sandstones by metal oxide nanoparticles(SiO_(2) and Al_(2)O_(3))was investigated with particular focus on the impact of surface roughness,zeta potential,and *** synthetic surfaces were prepared from powders of Berea sandstone with known grain size ranges and their average roughness and roughness ratio were obtained from the 3D surface reconstruction of their microscope *** surface was subsequently aged in Permian crude oil to alter its *** surfaces with larger grain sizes and lower surface roughness ratios,the lower capillary pressure allowed stronger oil/surface interactions,leading to enhanced *** wettability alteration effects of nanoparticles were then examined through real-time top view imaging and dynamic front view contact angle *** negatively charged SiO_(2) nanoparticles rapidly reversed the sandstone wettability,indicating their potential applicability as wettability alteration *** contrast,the positively charged Al_(2)O_(3) counterpart caused no wettability *** mechanism of wettability alteration was further studied by microscale interaction analyses and nanoscale transmission electron *** nanoparticles were only a few nanometers large,the microscale roughness had a negligible effect on the wettability ***,the combined effect of van der Waals dispersion forces and surface-charge-induced electrostatic forces were recognized as the two key factors affecting the wettability of sandstone *** interactions may be curbed at elevated temperatures due to a decrease in the zeta potential and colloidal stability of the particles.

关键词： Wettability Sandstone Surface roughness Nanoparticle Microscope Enhanced oil recovery Contact angle Zeta potential

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Assaying the allelopathic effects of Eucalyptus camaldulensis in a nursery bed incorporated with leaf litter

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Journal of Forestry Research 2018年第3期29卷 592-598页

作者： Romel Ahmed mohammad Shafioul Alam Farid Uddin Ahmed M.K.Hossain Department of Forestry and Environmental Science Shahjalal University of Science and TechnologySylhet 3114Bangladesh Ministry of Public Administration TeknafCoxsbazarDhaka 4761Bangladesh Arannayk Foundation House 21 Western RoadDOHSBananiDhaka 1206Bangladesh institute of Forestry and Environmental Science University of ChittagongChittagong 4331Bangladesh

Allelopathic effects of Eucalyptus camaldulensis Dehnh. were confirmed in Petri dish and pot experiments in our previous studies. However, the degree to which such effects under controlled experiments exist in more complex ecological settings remains to be tested. Thus, the present study was carried out by incorporating different proportions of ground litter of E. camaldulensis in soil. The growth of three agricultural crops: falen(Vigna unguiculata(L.) Walp.), chickpea(Cicer arietinum L.), and arhor(Cajanus cajan(L.) Millsp.), and two tree species, kala koroi(Albizia procera(Roxb.) Benth.) and ipil ipil(Leucaena leucocephala(lam.) de Wit) were tested. There were inhibitory effects of leaf litter on germination, shoot and root growth, leaf number, and collar diameter as well as a reduction of nodulation by legume crops(25–80%reduction). The extent of the effects was dependent on the proportion of leaf litter, the species and the type of traits. in contrast to shoot growth, the effect on root growth was more severe. No effect on germination was found with the agriculture crops while the two tree species showed reduced germination. The effect was greater in the presence of higher proportions of leaf litter mixed in soil while in some cases lower proportions stimulated growth. Not all species were suppressed; A. procera, C. cajan, V. unguiculata showed compatible growth while C. arietinum and *** were found incompatible. This study provides evidence that E. camaldulensis has allelopathic potential under field conditions and a careful selection of associated crops in agroforestry systems is highly recommended.

关键词： Allelopathy Eucalyptus camaldulensis inhibitory effects Germination Growth Nodulation

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Breast cancer therapy by laser-induced Coulomb explosion of gold nanoparticles

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Chinese Journal of Cancer Research 2013年第6期25卷 756-761页

作者： Muhammad Gul Bahar Ashiq mohammad Alam Saeed Bashir Ahmad Tahir Noorddin ibrahim Muhammad Nadeem Physics Department Universiti Teknologi Malaysia Department of Electrical and Computer Engineering McMaster University National Defense University of Malaysia

Objective： Laser-induced Coulomb explosion of gold nanoparticles for breast cancer has been studied by nanophotolysis technique. This study aimed to investigate whether laser-induced bubble formation due to Coulomb explosion can provide an effective approach for selective damage of breast cancer with gold nanoparticles. Method： Numerical method involves laser-induced Coulomb explosion of gold nanoparticles. Different parameters related to nanophotolysis such as laser fluence, tumor depth, cluster radius, laser pulse duration, and bubble formation is studied numerically. Numerical simulation was performed using Mat lab. Results： The gold nanopartieles of 10, 20, 30, 40, and 50 nm in radius could penetrate into tumor 1.14, 1.155, 1.189, 1.20 and 1.22 cm in depth respectively. The maximum penetration depth in tumor could be obtained with nanoparticles of 50 nm radius. Short laser pulse of 40 ns with nanoparticles of 10 nm radius could penetrate into tumor 1.14 cm in depth. Bubbles with a radius of 9 pm could effectively kill breast cancer cells without damaging healthy ones. The bubble radius increased from 4 to 9 lam with an increase in pulse duration in the range of 10 to 30 ns. Conclusions： Gold nanoparticles with increasing radius and bubble formation for selective damage of breast cancer cells are successfully probed. The present calculated results are compared with other experimental findings, and good correlation is found between the present work and previous experimental values. it was demonstrated that bubble formation in tumor may further increase the efficacy of breast cancer treatment.

关键词： Gold nanoparticles tumor depth nanophotolysis bubble formation breast cancer

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Biochar potentially enhances maize tolerance to arsenic toxicity by improving physiological and biochemical responses to excessive arsenate

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Biochar 2023年第1期5卷 1222-1242页

作者： Md.Mezanur Rahman Ashim Kumar Das Sharmin Sultana Protik Kumar Ghosh Md.Robyul i.lam Sanjida Sultana Keya Minhaz Ahmed Sheikh Arafat i.lam Nihad MdArifur Rahman Khan Mylea C.Lovell Md.Abiar Rahman S.M.Ahsan Touhidur Rahman Anik Pallavi Fnu lam-son Phan Tran mohammad Golam Mostofa Department of Plant Soil ScienceInstitute of Genomics for Crop Abiotic Stress ToleranceTexas Tech UniversityLubbockTX 79409USA Department of Agroforestry EnvironmentBangabandhu Sheikh Mujibur Rahman Agricultural UniversityGazipur 1706Bangladesh institute of Biotechnology and Genetic Engineering(iBGE) Bangabandhu Sheikh Mujibur Rahman Agricultural UniversityGazipur 1706Bangladesh Department of Agronomy Bangabandhu Sheikh Mujibur Rahman Agricultural UniversityGazipur 1706Bangladesh Plant Pathology Division Bangladesh Rice Research InstituteGazipur 1701Bangladesh Department of Agriculture Bangabandhu Sheikh Mujibur Rahman ScienceTechnology UniversityGopalganj 8100Bangladesh Department of Energy Plant Research Laboratory Michigan State UniversityEast LansingMI 48824USA Plant Resilience institute Michigan State UniversityEast LansingMI 48824USA Department of Biochemistry and Molecular Biology Michigan State UniversityEast LansingMI 48824USA

Metalloid pollution,including arsenic poisoning,is a serious environmental issue,plaguing plant productivity and quality of life ***,a carbon-rich material,has been known to alleviate the negative effects of environmental pollutants on ***,the specific role of biochar in mitigating arsenic stress in maize remains relatively ***,we elucidated the functions of biochar in improving maize growth under the elevated level of sodium arsenate(Na_(2)Aso_(4),AsV).Maize plants were grown in pot-soils amended with two doses of biochar(2.5%(B1)and 5.0%(B2)biochar Kg^(−1) of soil)for 5 days,followed by exposure to Na_(2)Aso_(4)(’B1+AsV’and’B2+AsV’)for 9 *** plants exposed to AsV only accumulated substantial amount of arsenic in both roots and leaves,triggering severe phytotoxic effects,including stunted growth,leaf-yellowing,chlorosis,reduced photosynthesis,and nutritional imbalance,when compared with control ***,biochar addition improved the phenotype and growth of AsV-stressed maize plants by reducing root-to-leaf AsV translocation(by 46.56 and 57.46%in‘B1+AsV’and‘B2+AsV’plants),improving gas-exchange attributes,and elevating chlorophylls and mineral levels beyond AsV-stressed *** pretreatment also substantially counteracted AsV-induced oxidative stress by lowering reactive oxygen species accumulation,lipoxygenase activity,malondialdehyde level,and electrolyte *** oxidative stress in‘B1+AsV’and‘B2+AsV’plants likely supported by a strong antioxidant system powered by biochar-mediated increased activities of superoxide dismutase(by 25.12 and 46.55%),catalase(51.78 and 82.82%),and glutathione S-transferase(61.48 and 153.83%),and improved flavonoid levels(41.48 and 75.37%,respectively).Furthermore,increased levels of soluble sugars and free amino acids also correlated with improved leaf relative water content,suggesting a better osmotic acclimatization mechanism in biochar-pretreated AsV-exposed plants.

关键词： Arsenic contamination Antioxidant defense system Biochar Gas-exchange attributes Nutrient dynamics Oxidative stress

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Assessment of Seedling Establishment and Growth Performance of Leucaena leucocephala(lam.) De Wit., Senna siamea(lam.) and Eucalyptus grandisW. Hill ex Maid. in Amended and Untreated Pyrite and Copper Tailings

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Journal of Biosciences and Medicines 2014年第1期2卷 33-50页

作者： Jamilu Edirisa Ssenku mohammad Ntale ingvar Backéus Hannington Oryem-Origa Department of Biological Sciences College of Natural Sciences Makerere University Kampala Uganda Department of Chemistry College of Natural Sciences Makerere University Kampala Uganda School of Natural Sciences Technology and Environmental Studies S&ouml dertö rn University Huddinge Sweden

Growth and survival performance of Leucaena leucocephala (lam.) De Wit., Senna siamea lam. and Eucalyptus grandis W. Hill ex Maid. in amended and untreated pyrite and copper tailings were evaluated under field conditions. The physico-chemical characteristics of the pyrite soil and tailings were determined. Growth in height, basal diameter and later dbh, relative growth rate due to height (RGRh) and basal diameter (RGRd) and survival were determined every after six months. A split block experimental design was used and the data collected were analyzed using a statistical package R, with an additional package lme4. Tailings and pyrite soils had extremely low pH, poor nutritional status, low organic matter content and elevated concentrations of available heavy metals as compared to the unpolluted soils and treated pyrite soil and copper tailings. Growth performance was extremely poor on the untreated pyrite soil and copper tailings for all the species but significantly enhanced by the application of compost and limestone. Treatment had a significant effect on all parameters at all sites. Eucalyptus grandis displayed a higher potential of phytomass accumulation than Leucaena leucocephala and Senna siamea. Even though Leucaena leucocephala grew fastest reaching reproductive maturity in 7 months after planting, relative growth rates of the three species were not significantly different at all sites. The three species can be used for phytostabilisation of the tailings at Kilembe tailings dam sites (KTDS) after treatment while at Low polluted pyrite trail site (LPPTS) and Highly polluted pyrite trail sites (HPPTS) Senna siamea is more suitable as Eucalyptus grandis and Leucaena leucocephala are susceptible to attacks by Syncerus caffer (Buffalos) and Kobus kob thomasi (Uganda Kob).

关键词： Seedling Establishment Growth Performance Pyrite Phytostabilization Tailings QECA

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Effect of shelterwood cutting method on forest regeneration and stand structure in a Hyrcanian forest ecosystem

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Journal of Forestry Research 2010年第3期21卷 265-272,395页

作者： mohammad Reza Pourmajidian Hamid Jalilvand Asghar Fallah Seyed Ataollah Hosseini Aidin Parsakhoo amin Vosoughian Ali Rahmani Department of Forestry Faculty of Natural ResourcesSari Agricultural Sciences and Natural Resources University Department of Forestry Faculty of Natural ResourcesMazandaran University

A study was carried out to evaluate the effect of shelterwood cutting methods on stand structure and regeneration density. Data were collected from a northern hardwood forest stands in iran with Fagus orientalis Lipsky as dominant species, with/without shelterwood cutting operation. Results clearly demonstrate that the management of Fagus orientalis Lipsky with shelterwood cutting system affected the frequency and diversity of the understory herbaceous species. The frequency of Viola silvestris lam., Asperula odorata L., Carex spp. and Rubus hyr-canus Juz increased significantly after shelterwood cutting. The DBH （diameter at breast height） of commercial species in control stands （57.50±2.15 cm） was greater than that in treated stands （50.67±1.88 cm）, whereas the total height of trees was similar between treated and control plots （21±0.5 m）. The number of Parrotia persica seedlings increased by 13.2% from 1995 to 2005 whereas the number of Fagus orientalis and Carpinus betulus seedlings significantly decreased from 1995 to 2005. in conclusion, it confirms that instead of shelterwood cutting method other silvicultural practices such as selection cutting method should be applied for the mountainous beech stands of Hyrcanian forests.

关键词： Shelterwood cutting stand structure regeneration Fagus orientalis Lipsky

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