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Enhancing Canola Yield and Photosynthesis under water stress with Hydrogel Polymers

Phyton-International Journal of Experimental Botany 2024年第7期93卷 1623-1645页

作者： Elham A.Badr Gehan Sh.Bakhoum Mervat Sh.Sadak Ibrahim Al-Ashkar Mohammad Sohidul Islam Ayman El Sabagh Magdi T.Abdelhamid Field Crops Research Department National Research CentreCairo12622Egypt Botany Department National Research CentreCairo12622Egypt Plant Production Department College of Food and Agriculture SciencesKing Saud UniversityRiyadh12271Saudi Arabia Department of Agronomy Hajee Mohammad Danesh Science and Technology UniversityDinajpur5200Bangladesh Department of Field Crops Faculty of AgricultureSiirt UniversitySiirt56100Turkey Department of Agronomy Faculty of AgricultureKafrelsheikh UniversityKafrelsheikh33516Egypt Department of Research Centers Montana State UniversityBozemanMT 59717USA

While Egypt’s canola production per unit area has recently grown,productivity remains low,necessitating increased *** are water-absorbent polymer compounds that can optimize irrigation schedules by increasing the soil’s ability to retain ***,twoﬁeld experiments were conducted to examine hydrogel application to sandy soil on canola growth,biochemical aspects,yield,yield traits,and nutritional quality of yielded seeds grown under water deﬁcit stress *** experiments were conducted by arranging a split-plot layout in a randomized complete block design(RCBD)with three times replications of each *** water stress at 75%or 50%of crop evapotranspiration(ETc)lowered chlorophyll a,chlorophyll b,caro-tenoids,and total pigments content,indole-3-acetic acid,plant development,seed yield,and oil and total carbo-hydrates of seed yield,hydrogel treatment enhanced all of the traits mentioned ***,hydrogel enhanced to gather compatible solutes(proline,amino acids,total soluble sugars),phenolics content in leaves,seed protein,and crop water productivity,which increased while the plants were under water *** results revealed that the full irrigation(100%ETc)along with hydrogel compared to water-stressed(50%ETc)led to enhanced seed yield(kg ha^(-1)),Oil(%),and Total carbohydrates(%)of rapeseed by 57.1%,11.1%and 15.7%,***,under water-stressed plots with hydrogel exhibited enhancement by 10.0%,3.2%and 5.1%in seed yield(kg ha^(-1)),oil(%),and total carbohydrates(%)of rapeseed by 57.1%,11.1%and 15.7%,respec-tively compared to *** a result,the use of hydrogel polymer will be a viable and practical solution for increasing agricultural output under water deﬁcit stress situations.

关键词： Hydrogel oil osmolytes rapeseed yield water stress

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Research Progress on Economic Forest water stress Based on Bibliometrics and Knowledge Graph

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Phyton-International Journal of Experimental Botany 2024年第5期93卷 843-858页

作者： Xin Yin Shuai Wang Chunguang Wang Haichao Wang Zheying Zong Zeyu Ban College of Mechanical and Electrical Engineering Inner Mongolia Agricultural UniversityHohhot010018China College of Energy and Traffic Engineering Inner Mongolia Agricultural UniversityHohhot010018China Key Laboratory of Biopesticide Creation and Resource Utilization of Universities Inner Mongolia Agricultural UniversityHohhotChina

This study employed the bibliometric software CiteSpace 6.1.R6 to analyze the correlation between thermal infrared,spectral remote sensing technology,and the estimation of economic forest water *** aimed to review the development and current status of this field,as well as to identify future research trends.A search was conducted on the China National Knowledge Infrastructure(CNKI)database using the keyword“water stress”for relevant studies from 2003 to *** visual analysis function of CNKI was used to generate the distribution of annual publication volume,and CiteSpace 6.1.R6 was utilized to create network maps illustrating collaboration among authors and *** study also analyzed the hotspots and frontiers of economic forest water *** a result,a total of 6664 academic journal articles related to water stress were *** collaboration networks were observed among scholars and institutions,with a focus on using crown temperature monitoring to diagnose crop water *** on the research findings,it was evident that the primary research trend involved the use of thermal infrared and spectral remote sensing technology for estimating water stress,making it a future research hotspot.

关键词： water stress thermal infrared spectral visual analysis knowledge map CiteSpace

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water stress resilient cereal crops:Lessons from wild relatives

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Journal of Integrative Plant Biology 2022年第2期64卷 412-430页

作者： Justine M.Toulotte Chrysoula K.Pantazopoulou Maria Angelica Sanclemente Laurentius A.C.JVoesenek Rashmi Sasidharan Department of Biology Plant EcophysiologyInstitute of Environmental BiologyUtrecht UniversityUtrecht3584 CH The Netherlands

Cereal crops are significant contributors to global *** climate change disrupts weather patterns and wreaks havoc on crops,the need for generating stress-resilient,high-yielding varieties is more urgent than *** extremely promising avenue in this regard is to exploit the tremendous genetic diversity expressed by the wild ancestors of current day crop *** crop wild relatives thrive in a range of environments and accordingly often harbor an array of traits that allow them to do *** identification and introgression of these traits into our staple cereal crops can lessen yield losses in stressful *** the last decades,a surge in extreme drought and flooding events have severely impacted cereal crop *** models predict a persistence of this trend,thus reinforcing the need for research on water stress *** we review:(i)how water stress(drought and flooding)impacts crop performance;and(ii)how identification of tolerance traits and mechanisms from wild relatives of the main cereal crops,that is,rice,maize,wheat,and barley,can lead to improved survival and sustained yields in these crops under water stress conditions.

关键词： abiotic stress cereal crops climate change crop wild relatives drought flooding grass water stress

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The Stimulation Effects of N^+ Ion Beam on Liquorice and Its Influence on water stress

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Plasma Science and Technology 2006年第2期8卷 247-252页

作者：魏胜林刘竞男吴李君王家宝余增亮 Key Laboratory of Ion Beam Bioengineering Institute of Plasma Physics Chinese Academy of Sciences Hefei 230031 China School of City Science Soochow University Suzhou 215123 China Key Laboratory of Ion Beam Bioengineering Institute of Plasma Physics Chinese Academy of Sciences Hefei 230031 China

We have developed a large number of exocrine glands on liquorice leaves and facilitated polysaccharide secretion. Liquorice polysaccharide possesses stronger bound water affinity to gaseous water compared with sucrose and glucose. Our results show that the bound water affinity of liquorice polysaccharide to gaseous water is 49.75% higher than glucose （p〈0.01）. With N^＋ implantation （total dosage of 4.68×10^16 ions/cm^2 and energy of 20 keV） into dry liquorice seeds, both the bound water affinity to gaseous water and the bound water content of dry liquorice leaf can be significantly increased 30.24% （p 〈 0.01） and 36.51% （p 〈 0.01） respectively compared with the sham-irradiated seeds. Meanwhile, with these parameters chosen for N^＋ implantation into dry liquorice seeds, the leaf polysaccharide content under water stress （ψw=-1.5 MPa） can increase significantly （p 〈 0.05） and the plant growth can also improve significantly （p 〈 0.05）.

关键词： N^+ implantation liquorice polysaccharide of liquorice bound water water stress

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Effects of Rare Earth on Oxidative Damage and Redox System of Wheat Seedling Leaves under water stress

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Journal of Rare Earths 2005年第4期23卷 486-490页

作者：高永生陈集双曾福礼 College ofLife Science Zhejiang University Hangzhou 310029 China College ofLife Science LanzhouUniversity Lanzhou 730000 China

After treated with low concentration of La^3 ＋ , the rate of producing active oxygen free radical, the relative permeability of cell membrane, the contents of bivalent iron ion in wheat seedling leaves under water stress were determined. The results show that in wheat seedling leaves, feasible concentrations of La^3 ＋ decreases the accumulation of active oxygen free radical, inhibits the increase of the relative permeability of cell membrane, reduces the content of peroxidation product MDA of membrane lipid, and prevents the plant cell producing more bivalent iron ion which can catalyzed the reaction of Haber-weiss and Fenton to produce more superoxide anion. In addition, purified plasma membrane was isolated by aqueous two-phase partitioning from wheat seedling leaves. The reduction rate of Fe（CN）6^3- by purified plasma membrane in La^3＋ -treated wheat seedling leaves is different from those in the absence of La^3＋ under water stress. The changing trend of the redox activity to La^3＋ is similar to that of the content of Fe^2＋ . The results reveal that extraneous La^3＋ can alleviate the damages of cell membrane caused by water stress via promoting the activity of redox system and the ability of eliminating ROS in wheat seedling leaves.

关键词： lanthanum water stress redox system lipid peroxidation wheat seedling leaves rare earths

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Assessment of Photochemical Reflectance Index as a Tool for Evaluation of Chlorophyll Fluorescence Parameters in Cotton and Peanut Cultivars Under water stress Condition

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Agricultural Sciences in China 2010年第5期9卷 662-670页

作者： Shahenshah Yasuda Yoshizumi LI Mao-song Isoda Akihiro Graduate School of Horticulture Chiba University Chiba 271-8510 Japan Graduate School oflnformatics Tokyo University of Information Sciences Chiba 265-8501 Japan Institute of Environment and Sustainable Development for Agriculture Chinese Academy of Agricultural Sciences Beijing 100081 P.R. China

The relationships between photochemical reflectance index （PRI） and the chlorophyll fluorescence parameters were examined to assess suitability of PRI as a remote-sensing tool for the chlorophyll fluorescence parameters. A greenhouse experiment was conducted using cotton and peanut crops under water stress condition. Five cotton and six peanut cultivars were grown using Andosole soil in pots maintained at two water levels; the control and water stress treatment （WS） of 100 and 50% of the daily transpiration, respectively. Higher non-photochemical quenching （NPQ） was exhibited by peanut than that of cotton by the water stress. On the other hand, the decreases of the actual quantum yield of photosystem II （△F/F＇m） and PRI by the water stress in cotton were larger than those in peanut. There were positively significant correlation coefficients between PRI and △F/F＇m in cotton at noon and in the afternoon including the control and WS. The correlations of PRI with NPQ were negatively significant at noon and in the afternoon for cotton, and in the afternoon for peanut. No clear relationship was found among these parameters in the morning probably due to the diurnal increase in global solar radiation. It was concluded that there would be a possibility to detect the effects of water stress on △F/F＇m and NPQ by PRI with some exceptions, although PRI could not note varietals differences in △F/F＇m and NPQ for each treatment.

关键词： actual quantum yield of photosystem II Arachis hypogaea L. Gossypium hirsutum L. non-photochemicalquenching photochemical reflectance index remote sensing water stress

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Effects of water stress on Reactive Oxygen Species Generation and Protection System in Rice During Grain-Filling Stage

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Agricultural Sciences in China 2010年第5期9卷 633-641页

作者： WANG He-zheng ZHANG Lian-he MA Jun LI Xu-yi LI Yan ZHANG Rong-ping WANG Ren-quan College of Agriculture Henan University of Science and Technology Luoyang 471003 P.R.China Rice Research Institute of Sichuan Agricultural University Wenjiang 611130 P.R.China

Rice is one of the main staple food crops in the world, but it may suffer serious water stress during growth period. water stress during grain filling results in decreased grain yeild, but its mechanism generating and scavenging the active oxygen is unclear under continuance of the water stress. The experiment was carried out in growth chamber to investigate the effects of water stress on the production of superoxide free radical （O2）, hydrogen peroxide （H202）, malondialdehyde （MDA）, reduced glutathione （GSH）, ascorbic acid （AsA）, and antioxidative enzyme activities in three rice hybrids with differing drought resistant under both normal and drought conditions during grain-filling stage. The results showed that water stress aggravated the membrane lipid peroxidation in rice leaves, which was more severe in less drought resistant hybrids than that in more tolerant ones. Also O2＇ and H2O2 accumulated more rapidly in less drought resistant hybrids than that in more tolerant ones. During water stress, decreases of GSH, AsA, chlorophyll, and relative water contents in more drought resistant hybrids were obvious less than those in less tolerant ones. Activities of superoxide dismutase （SOD）, catalase （CAT） and peroxidase （POD） in/eaves increased obviously in 0-14 d after heading and subsequently decreased rapidly, and those in more drought resistant hybrids were more than those in less tolerant ones. The results showed that changes of O2, H2O2, MDA, GSH, and AsA contents and antioxidative enzyme activities correlated significantly to drought resistance of rice hybrids, and more drought resistant hybrids possessed high ant oxidation capacity.

关键词： rice water stress reactive oxygen species protection system

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Effects of Exogenous Spermidine on PhotosystemⅡof Wheat Seedlings Under water stress

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Journal of Integrative Plant Biology 2006年第8期48卷 920-927页

作者： Hui-Guo Duan Shu Yuan Wen-Juan Liu De-Hui Xi Dong-Hong Qing Hou-Guo Liang Hong-Hui Lin Key Laboratory of Bio-resources and Eco-environment （Ministry of Education） College of Life Sciences Sichuan University Chengdu 610064 China Department of Chemistry and Life Sciences Neijiang Teachers＇ College Neijiang 641112 China

The effects of exogenous spermidine （Spd） on lipid peroxidation, relative plasma membrane permeability, photosystem Ⅱ （PSII） gene expression and PSII photochemical activity in water-stressed wheat seedlings were investigated. The decrease in relative water content （RWC）, Chl content, and 2,6-dichlorophenol indophenol （DCIP） photoreduction of PSII, and increases in electrolyte leakage of plasma membranes and malonyldialdehyde （MDA） in water-stressed leaves was alleviated by Spd pretreatment. Furthermore, Western and Northern blot analysis showed that decreases in the PSll major proteins D1, D2 and LHCII and the transcripts of corresponding genes psbA, psbD and cab were also alleviated by Spd pretreatment under water stress. These results suggest that the application of exogenous Spd protects PSII against water stress at both the transcriptional level and the translational level, and allows PSII to retain a higher activity level during water stress. The protective role of Spd in the photosynthetic apparatus also is discussed.

关键词： gene expression photosystem Ⅱ spermidine water stress wheat seedlings.

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Quantifying water stress effect on daily light use efficiency in Mediterranean ecosystems using satellite data

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International Journal of Digital Earth 2017年第6期10卷 623-638页

作者： Sergio Sanchez-Ruiz Alvaro Moreno Maria Piles Fabio Maselli Arnaud Carrara Steven Running Maria Amparo Gilabert Departament de Fisica de la Terra i Termodinamica Facultat de FisicaUniversitat de ValenciaBurjassotSpain Numerical Terradynamic Simulation Group University of MontanaMissoulaMTUSA Barcelona Expert Center Institut de Ciencies del MarICM-CSICBarcelonaSpain IBIMET-CNR Sesto FiorentinoItaly Fundacion CEAM PaternaSpain

The capacity of six water stress factors(ε′(i))to track daily light use efficiency(ε)of water-limited ecosystems was *** factors are computed with remote sensing operational products and a limited amount of ground data:ε′1 uses ground precipitation and air temperature,and satellite incoming global solar radiation;ε′(2) uses ground air temperature,and satellite actual evapotranspiration and incoming global solar radiation;ε′_(3) uses satellite actual and potential evapotranspiration;ε′_(4) uses satellite soil moisture;ε′_(5) uses satellite-derived photochemical reflectance index;and ε′_(6) uses ground vapor pressure *** factors were implemented in a production efficiency model based on Monteith’s approach in order to assess their performance for modeling gross primary production(GPP).Estimated GPP was compared to reference GPP from eddy covariance(EC)measurements(GPP EC)in three sites placed in the Iberian Peninsula(two open shrublands and one savanna).ε′_(i) were correlated to ε,which was calculated by dividing GPP EC by ground measured photosynthetically active radiation(PAR)and satellite-derived fraction of absorbed *** results were achieved by ε′(1),ε′(2),ε′(3) and ε′(4) explaining around 40% and 50% of ε variance in open shurblands and savanna,*** terms of GPP,R^(2)≈0.70 were obtained in these cases.

关键词： Light use efficiency water stress GPP Monteith Mediterranean ecosystems

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Physiological traits and anatomic structures of the seed for two short cotton season genotypes(Gossypium hirsutum L.) under water stress

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Journal of Integrative Agriculture 2020年第1期19卷 89-98页

作者： Maryam KOLAHI Elham FAGHANI Andrea GOLDSON-BARNABY Borhan SOHRABI Faculty of Science Shahid Chamran University of AhvazAhvaz ***Iran Agronomy Department Cotton Research InstituteAgricultural ResearchEducation and Extension Organization(AREEO)Gorgan ***Iran Department of Chemistry the University of the West IndiesMona 37816Jamaica Agricultural Engineering Department AREEOGorgan ***Iran

Cotton(Gossypium hirsutum L.) is utilized commercially in the production of textile, clothing, and household goods. Its growth is affected by various environmental conditions such as soil, climate, and water supply. Irrigation is one of the most important factors for crop management. This research was designed with the aim of studying the biochemical and anatomical features of two genotypes of cottonseed(Latif and Golestan) in order to determine optimum irrigation. Protein, starch, gossypol gland, total soluble protein, starch content, and the anatomical structure of the cotton seeds were investigated. The data were analyzed using the SAS Software. The results showed that when rainfed, Golestan genotype seeds had a larger number of secretory cavities, soluble protein, and starch compared to Latif seeds. There was also a noticeable difference in the size of the seeds. Cellulosic cell walls and protein particles were also observed in the seed structure under induced water stress conditions. It can therefore be concluded that in response to water shortage, there was a noticeable change in the morphometric, anatomic, and biochemical features of the cottonseeds. It can be concluded that when rainfed, the Golestan genotype of cottonseed has more compatibility than the Latif genotype. In general, the application of different levels of irrigation showed that at moderate levels of irrigation, anatomical features appeared more normal. The observations indicate that at high levels of irrigation, some cells begin to dehisce due to osmotic stress, which results in a lack of accurate formation of tissue structures. The Golestan genotype is therefore the best suited for dryland farming.

关键词： anatomic structure cotton seed metabolites water stress

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