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Evaluating germinability of eight desert halophytes under long-term seed storage: Implications for conservation

Plant Diversity 2019年第4期41卷 229-236页

作者： Sanjay Gairola Hatem A. Shabana Tamer Mahmoud Ali El-Keblawy Andrea Santo Sharjah Seed Bank and Herbarium Sharjah Research AcademyP.O.Box 60999SharjahUnited Arab Emirates Department of Applied Biology College of SciencesUniversity of SharjahP.O.Box 27272SharjahUnited Arab Emirates Independent Researcher SelargiusCagliariItaly

Ex situ conservation in seed banks is a potential complementary conservation strategy for native plant *** is well established that ex situ seed banking of native wild plants prolongs seed viability and thereby preserves genetic and species diversity for future *** evaluated ex situ storage potential of eight halophytic species from deserts in the United Arab Emirates(UAE)by studying seed ***,we examined the germinability of freshly collected seeds and seeds stored for three years in a seed *** also examined the effect of light conditions on fresh and stored seed *** seeds of seven of the eight species tested had a higher germination rates under 12/12 h light/dark fluctuations than did those exposed to total *** reduced light sensitivity in Halocnemum strobilaceum,Suaeda aegyptiaca,Salsola drummondii and Salsola imbricata,but increased the requirement for light in Arthrocnemum *** Anabasis setifera,storage decreased germination percentage when there was a 12-hour light/dark fluctuation,but increased germination rate when exposed to the dark *** significantly reduced germination in both the light/dark and dark treatments in Suaeda vermiculata and *** speed also responded differently to storage;whereas Timson's index significantly increased in *** and ***,it significantly decreased for ***,*** and *** of these species at a range of temperatures requires further testing;additionally,we strongly suggest that these laboratory findings be complemented by field studies.

关键词： Ex situ conservation halophytes Seed bank collection Seed germination Salt tolerance SSBH

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Characterization of saline soil for the halophytes of largest inland saline wetland of India using geospatial technology

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Journal of Oceanology and Limnology 2023年第4期41卷 1277-1291页

作者： Naik RAJASHREE Sharma LAXMI KANT Singh AVINASH Department of Environmental Science School of Earth SciencesCentral University of RajasthanBandarsindriAjmer 305817India

About 23%of the surface area and 44%of the volume of all the lakes are occupied by saline lakes in the ***,agricultural diversion,illegal encroachment,pollution,and invasive species could cause these lakes to dry up completely or partially by *** saltpan encroachment is causing Sambhar,India’s largest saline lake,to shrink by 4.23%every *** study aims to characterize the soil parameters where halophytes are growing.A literature survey was conducted for halophytes and soil *** study area was divided into four zones for stratified random *** sampling was conducted in February *** soil indicators for halophyte selected were pH,electrical conductivity,moisture,salinity,organic carbon,and organic *** obtained results were interpolated in the geospatial platform for soil characteristic *** is found that no research is conducted on halophytes of the *** on soil are also inconsistent and only six common parameters could be *** show that the pH ranged 9.37-7.66,electrical conductivity was 16.1-0.38,moisture 23.37%-1.2%,organic carbon 3.29%-0.15%,organic matter 5.6%-0.2%,and salinity 8.86%-0.72%.Though these results show improved condition as compared to last few years,in long term,the lake is *** the UN Decade of Ecosystem Restoration(2021-2030),if these causes are not addressed,the ecosystem may completely dry up.

关键词： halophytes inland lakes saline wetlands soil geospatial mapping interpolation

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Diversity of cultivable endophytic bacteria associated with halophytes in Xinjiang of China and their plant beneficial traits

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Journal of Arid Land 2021年第8期13卷 790-800页

作者： LI Li GAO Lei LIU Yonghong FANG Baozhu HUANG Yin Osama A A MOHAMAD Dilfuza EGAMBERDIEVA LI Wenjun MA Jinbiao State Key Laboratory of Desert and Oasis Ecology Xinjiang Institute of Ecology and GeographyChinese Academy of SciencesUrumqi 830011China University of Chinese Academy of Sciences Beijing 100049China Faculty of Biology National University of UzbekistanTashkent 100174Uzbekistan State Key Laboratory of Biocontrol Guangdong Provincial Key Laboratory of Plant ResourcesSchool of Life SciencesSun Yat-Sen UniversityGuangzhou 510275China

Endophytic bacteria from halophytes have a wide range of application prospects in various fields,such as plant growth-promoting,biocontrol activity and stress *** current study aimed to identify cultivable endophytic bacteria associated with halophytes grown in the salt-affected soil in Xinjiang Uygur Autonomous Region,China and to evaluate their plant beneficial traits and enzyme-producing *** bacteria were isolated from Reaumuria soongorica(PalL Maxim.),Artemisia carvifolia(Buch.-*** ***.),Peganum harmala *** Suaeda dendroides(***.)by using the cultural-dependent *** we classified these bacteria based on the difference between their sequences of 16S rRNA(16S ribosomal RNA)*** showed that the isolated bacteria from *** belonged to the genera Brucella,Bacillus and *** bacteria from *** belonged to the genera Micromonospora and *** bacteria from *** belonged to the genera Paramesorhizobium,Bacillus and *** bacteria from *** belonged to the genus ***,the genus Bacillus was detected in the three above plants,indicating that Bacillus is a common taxon of endophytic bacteria in ***,our results found that about 37.50%of the tested strains showed strong protease-producing activity,6.25%of the tested strains showed strong cellulase-producing activity and 12.50%of the tested strains showed moderate lipase-producing ***,all isolated strains were positive for IAA(3-Indoleacetic acid)production,31.25%of isolated strains exhibited a moderate phosphate solubilization activity and 50.00%of isolated strains exhibited a weak siderophore production *** findings suggest that halophytes are valuable resources for identifying microbes with the ability to increase host plant growth and health in salt-affected soils.

关键词： endophytes environmental microbiology halophytes biodiversity plant beneficial properties

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Vertical Migrating and Cluster Analysis of Soil Mesofauna at Dongying halophytes Garden in Yellow River Delta

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Journal of Northeast Agricultural University(English Edition) 2014年第1期21卷 25-30页

作者： He Fu-xia Xie Tong-yin Xie Gui-lin Fu Rong-shu College of Life Sciences Northeast Agricultural University College of Life Sciences Shandong Normal University

For the first time, we used Tullgren method made a study on vertical migrating and cluster analysis of the soil mesofauna in Dongying halophytes Garden in the Yellow River Delta （YRD）, Shandong Province. The results showed that the soil mesofauna tended to gather on soil surface in most samples at most times, but the vertical migrating greatly varied in different seasons or environment conditions. Acari was the dominant group. The index of diversity of the soil fauna was correlated with the index of evenness. The Acari＇s number of individuals infected other species and numbers. Dominant group-Aeari made greater contribution to the result of cluster analysis, and there were significant differences between communities in different habitats by cluster analysis with both Bray-Curtis and Jaccard similarity coefficient.

关键词： halophytes soil mesofauna vertical migrating cluster analysis

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Germination strategies of two halophytes in Salt Desert of northwestern China

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Science China Earth Sciences 2007年第S1期 115-121页

作者： LI Li & ZHANG XiMing Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences. ürümqi 830011, China

The effects of temperatures and salinities on germination of two halophytes, Kalidium capsicum and Suaeda physophora in northwestern China, were tested, and their seed size and seed production were compared. It was found that seed of Suaeda physophora germinate under 10℃, even about 0℃, and at a wide temperature range of 10―30℃. It showed about 50% germination in the concentration up to 0.7 mol/L NaCl; optimum germination temperature of Kalidium capsicum was between 20℃ and 30℃. The concentration of less than 0.3 mol/L NaCl inhibited absolutely its germination. Germination recovery was observed when salinities were reduced and total germination percentage exceeded 90%. Seeds of Kalidium capsicum showed no loss of viability while Suaeda physophora an annual loss of viability of 75% at room temperature. Mean weight of seeds of Suaeda physophora was about 8.5 times of Kalidium capsicum, whereas the number of seeds of the latter was more than 20 times of the former. Suaeda physophora was observed to be dependent on periodic precipitation in germination and seedling growth. It suggests the evident trace of the species with zonation pattern. On the other hand, the germination of Kalidium capsicum was affected by unpredictable rain and inundation. This species might be a type without zonation patterns in halophytes. It was concluded that both species are halophytes, but they are established successfully by different adaptation strategies in the early stage of life history.

关键词： germination strategy halophytes salt desert Kalidium capsicum Suaeda physophora

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Effects of Different halophytes on Soil Microflora and Enzyme Acti-vities of Saline-alkali Soil

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Journal of Northeast Agricultural University(English Edition) 2022年第3期29卷 28-36页

作者： Wang Xue-qin Zhang Feng-ju Xu Xing Lu An-qiao College of Agriculture Ningxia UniversityYinchuan 750021China Ningxia Science and Technology Development Strategy and Information Research Institute Yinchuan 750021China Institute of Environmental Engineering Ningxia UniversityYinchuan 750021China

In the pot experiment,seven varieties of halophytes were grown in saline-alkali soil to investigate the responses of microflora and soil enzymes in the *** results showed that compared to the control,the population of bacterial colony(84.8%-95.6%),actinomycetes colony(12.0%-14.5%)and fungi colony(0.5%-1.1%)increased significantly(P<0.05).The population of ammonia bacteria,aerobic cellulose decomposition bacteria in the soil of Vicia sativa L.(201.99%and 395.49%),Medicago sativa(152.43%and 319.90%)and Sesbania cannabina(Retz.)Pori(193.14%and 396.08%)were higher significantly than that of Panicum virgatum L.(49%and 60%),Sorghum bicolor(L.)Moench(99%and 210%),Amaranthus hypochondriacus L.(75%and 36%)and Aneurotepidimu chinense(75%and 77%)(P<0.05).However,Sorghum bicolor(L.)Moench was evidently higher than Panicum virgatum L.,Amaranthus hypochondriacus *** Aneurotepidimu chinense(P<0.05)in the *** population of ammonia bacteria and aerobic cellulose-decomposing bacteria was significantly correlated with the five enzymes(P<0.05),which could improve the microenvironment in saline-alkali soil to accelerate the element cycling and promote the sustainable development of agriculture through cultivating Medicago sativa,Vicia sativa L.,Sesbania cannabina(Retz.)Pori and Sorghum bicolor(L.)Moench.

关键词： saline-alkali soil halophytes microflora soil enzyme functional microbial population

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Study of halophytes Dispersion in the North-West Region of Algeria

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Open Journal of Ecology 2014年第10期4卷 628-640页

作者： Chahrazed Hassaine Redda Aboura Abdessamad Merzouk Djamel Benmansour Laboratory of Ecology and Natural Ecosystems Management Faculty of SNV_STUUniversity of TlemcenTlemcenAlgeria Laboratory of Statistics and Random Modeling University of TlemcenTlemcenAlgeria

To know the mode of distribution of halophytes species in the western region of Algeria, it was considered useful to undertake a study based on the achievement of identified linear. Two areas were considered, Northern Tlemcen (Beni Saf and Rachgoun) and Northwest Oran (Sabkha). The trend of climate aridity which is more pronounced in the study area may have influences on floristic halophytes. The study of the floristic composition showed the importance of indicator halophitisation species such as Atriplex halimus, Tamarix gallica, Salicornia fruticosa, Arthrocnemum glaucum and was accompanied by various therophytes such as Sinapis arvensis, Erodium moschatum, Malva sylvestris and Plantago lagopus. ANOVA (analysis of variance) has highlighted the factors that influence the spatial distribution of some halophytes species at five stations studied;some are dispersed aggregates (Tamarix gallica, Suaeda fruticosa) with a coefficient of variation (Cv) greater than 10%;others are regularly dispersed (Atriplex halimus) with a coefficient of variation (Cv) less than 10%.

关键词： West of Algeria halophytes ANOVA Dispersion

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Genetic resources of halophytes and their utilization for sustainable development of russian rangelands

Genetic resources of halophytes and their utilization for su...

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ⅩⅪ International Grassland Congress and the Ⅷ International Rangeland Congress

作者： Nariman Shamsutdinov All-Russian Institute of Hydraulic Engineering and Land Reclamation Bolshaya Academicheskaya St.44141550MoscowRussia

＜正＞Introduction It was found that arid regions of Russia occupying more than 100 million ha include dry-steppe（74.5 mln ha）, semidesert（28.7 mln ha）,and desert（5.6 mln ha）.Due to unwise management of natural pastures and irrigated lands many have become degraded:productivity of natural pasture ecosystems has decreased 1.5 to 2-fold,810;and valuable forage varieties have *** year production of irrigated lands is reduced due to salinity problems,and currently 30%of the irrigated lands are not used for agriculture due to heavy salinization and low value.

关键词： halophytes ecotypes varieties desert fodder plants

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Organ-Specific Responses of Vacuolar H^+-ATPase in the Shoots and Roots of C_3 Halophyte Suaeda salsa to NaCl

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Journal of Integrative Plant Biology 2010年第3期52卷 308-314页

作者： Ming-Feng Yang Jie Song Bao-ShanWang Key Laboratory of Plant Stress Research College of Life Sciences Shandong Normal University Jinan 250014 China Institute of Botany the Chinese Academy of Sciences Beijing 100093 China

Suaeda salsa L. is a halophytic species that is well adapted to high salinity. In order to understand its salt tolerance mechanism, we examined the growth and vacuolar H^＋-ATPase （V-ATPase） response to NaCI within the shoots and roots. The growth of shoots, but not roots, was dramatically stimulated by NaCI. CI^- and Na^＋ were mainly accumulated in shoots. V-ATPase activity was significantly increased by NaCI in roots and especially in shoots. Interestingly, antisera ATP95 and ATP88b detected three V1 subunits （66, 55 and 36 KDa） of V-ATPase only in shoots, while an 18 kDa V0 subunit of V-ATPase was detected by both antisera in shoots and roots. It suggested that the tissue-specific characteristics of V-ATPase were related to the different patterns of growth and ion accumulation in shoots and roots of S. salsa.

关键词： ADENOSINE triphosphatase halophytes SALT IMMUNE serums SHOOTS (Botany)

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Detecting soil salinity with arid fraction integrated index and salinity index in feature space using Landsat TM imagery

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Journal of Arid Land 2013年第3期5卷 340-353页

作者： Fei WANG Xi CHEN GePing LUO JianLi DING XianFeng CHEN State Key Laboratory of Desert and Oasis Ecology Xinjiang Institute of Ecology and GeographyChinese Academy of Sciences University of Chinese Academy of Sciences College of Resources and Environmental Science Xinjiang University Slippery Rock University of Pennsylvania Slippery RockPA16057USA

Modeling soil salinity in an arid salt-affected ecosystem is a difficult task when using remote sensing data because of the complicated soil context （vegetation cover, moisture, surface roughness, and organic matter） and the weak spectral features of salinized soil. Therefore, an index such as the salinity index （SI） that only uses soil spectra may not detect soil salinity effectively and quantitatively. The use of vegetation reflectance as an indirect indicator can avoid limitations associated with the direct use of soil reflectance. The normalized difference vegetation index （NDVI）, as the most common vegetation index, was found to be responsive to salinity but may not be available for retrieving sparse vegetation due to its sensitivity to background soil in arid areas. Therefore, the arid fraction integrated index （AFⅡ） was created as supported by the spectral mixture analysis （SMA）, which is more appropriate for analyzing variations in vegetation cover （particularly halophytes） than NDVI in the study area. Using soil and vegetation separately for detecting salinity perhaps is not feasible. Then, we developed a new and operational model, the soil salinity detecting model （SDM） that combines AFⅡ and SI to quantitatively estimate the salt content in the surface soil. SDMs, including SDM1 and SDM2, were constructed through analyzing the spatial characteristics of soils with different salinization degree by integrating AFⅡ and SI using a scatterplot. The SDMs were then compared to the combined spectral response index （COSRI） from field measurements with respect to the soil salt content. The results indicate that the SDM values are highly correlated with soil salinity, in contrast to the performance of COSRI. Strong exponential relationships were observed between soil salinity and SDMs （R2〉0.86, RMSE〈6.86） compared to COSRI （R2=0.71, RMSE=16.21）. These results suggest that the feature space related to biophysical properties combined with AFII and SI can effectively pr

关键词： soil salinity spectrum halophytes Landsat TM spectral mixture analysis feature space model

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