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Jul 2023 DOI 10.14302/issn.2639-3166.jar-23-4606
B. McCarty LambertCorresponding author
St. Augustinegrass (Stenotaphrum secundatum (Walt.) Kuntze) generally has poor cold tolerance yet good to excellent shade tolerance. As mostly hot summers follow cold winters in USDA Hardiness Zone 7, severely damaging tall fescue (Lolium arundinaceum (Schreb.) Darbysh.) and centipedegrass (Eremochloa ophiuroides (Munro) Hack.), a St. Augustinegrass cultivar cold tolerant enough to be grown for shady lawns would greatly benefit home owners, recreational sites, and sod growers in the “transition zone.” Eight St. Augustinegrass samples were selected, including industry standards ‘Raleigh’ and ‘Palmetto’, plus ‘Palisades’ zoysiagrass (Zoysia japonica Steud.) for further testing from an established germplasm collection of material collected from lawns grown in USDA Hardiness Zone 7. Overall, based on 8-week greenhouse studies, the experimental lines had similar shade tolerance compared to commercial standards ‘Raleigh’ ‘Palmetto’ and ‘Palisades’ zoysiagrass. Field studies may be warranted to validate greenhouse studies to help further evaluate shade tolerance of experimental and commercial lines. Information generated supports the use of certain St. Augustinegrass selection in a wider environmental conditions such as reduced light environments (RLE).
Dec 2022 DOI 10.14302/issn.2639-3166.jar-22-4301
E. E. Elshukry Elsadig.Corresponding author
Agriculture Research Corporation, Horticultural Crops Research Center-Shambat.
Field experiments were conducted during three successive winter seasons 2010/11, 2011/12 and 2012 /13, at Shambat Research Station Farm on clay loam soil pH 7.8, to study the effects of seed bed, cultivars and seed rates and their interactions on onion set yield and quality. Two seed bed (flat and ridge), two cultivars Kamleen and Baftaim (S) and three seed rates 4, 8, 12 g / m² (40, 80, 120 kg / ha) were tested. The experimental design used was 2*2*3 Factorial in spilt-split plot design with four replications. Yield was evaluated as set yield t / ha, whereas, quality was evaluated as percentage of large (2.9-2.0 cm) and medium (1.9-1.0 cm) set size according to diameter and average of single set weight (g). Cultivar Baftaim (S) gave the highest set yield t/ha and average of single set weight in the three seasons. The seed rate of 4 g/m² (40 kg / ha) resulted in highest average of single set weight and the highest number percentage of large set size. Increasing the seed rate increased set number and quality; the seed rate 12 g/m² (120 kg/ha) gave the highest percentage of medium set size.
Dec 2020 DOI 10.14302/issn.2639-3166.jar-20-3642
H. M. Adam AbubakerCorresponding author
Department of Crop Science, College of Agriculture, University of Bahri, Khartoum North, Sudan
Today; there is an increasing demand for fertilizers due to the intensive and extensive agricultural activity to meet the ever increasing demand for food and fiber by the rapid world population expansion. This study is mainly concern with the Bat Guano which is usually collected from the Caves. This experiment was conducted at the Farm of the College of Agriculture, University of Bahri, Alkadaro, Khartoum North-Sudan during the period from July to November, 2017 with the objective to investigate the efficacy of Bat Guano and Nitrogen fertilizer on growth and yield of Serena and Opera (Helianthusannus, L.) Hybrid Sunflower cultivars. The study was based on split-plot experiment in randomized complete block design (RCBD) with four (4) replications. Data pertaining Plant Height (cm), Leaf Number (LN), Leaf Area (LA), Leaf Area Index (LAI) and Seed Weight (SW) were studied. The said data were analyzed using Statistic 8- software. The results reflected significant increase in plant height (F= 6.05, P < 0.0001, leaf number (F=2.37, P<0.0388), leaf area (F= 7.44, P<0.001), leaf area index (F= 6.53, P < 0.0001) and seed weight of both Sunflower cultivars respectively due to application of Guano and Nitrogen fertilizer compared to the control. It also reflected non-significant difference between all studied traits as application of either Guano or Nitrogen fertilizer. Moreover, all studied characters of the two cultivars have similarly responded to the application of the two types of fertilizers. Further studies are recommended to assess the benefits from the use of Bat Guano as a fertilizer.
Jun 2020 DOI 10.14302/issn.2639-3166.jar-20-3388
H. M. Adam AbubakerCorresponding author
Department of Crop Science, College of Agriculture, University of Bahri, Khartoum North, Sudan
A field experiment was conducted during 2017/2018 to assess the effects of Argel (Solenostemmaargel, Del. Hayne) and Nitrogen fertilizer on the performance of two Sunflower Hybrid cultivars, with the objectives to exploit an easy, economic, and accessible organic fertilizer, the Argel in the phase of the continuous increasing prices of chemical fertilizers.. This experiment was laid out on spilt-split-plot experiment in Randomized Complete Block Design (RCBD) with four replications. Observations were taken on some agronomic traits (Plant height (m), Leaf area (LA), leaf Number (NL), Leaf Area Index (LAI) and Mean Seed Weight). The results revealed that the application of Argel and Nitrogen fertilizer have significantly increased the leaf Area (F= 7.22, P < 0.001), Plant Height (F=2.68, P < 0.2001), Leaf Number (F= 3.90, P < 0.0024), Leaf Area Index (F= 3.83, P < 0.0026) and Mean Seed Weight of both Serena and Opera cultivars respectively compared to the control. However, the different treatments of Argel and Nitrogen reflected variable degree of increase for the studied parameters. The study concludes that Argel is very promising, therefore a further study with different levels of Argel including other plant parameters is recommended.
Feb 2020 DOI 10.14302/issn.2639-3166.jar-20-3185
Masoero GiorgioCorresponding author
Accademia di Agricoltura di Torino, Via A. Doria 10, 10123 Torino (Italy).
Four strains of Arbuscular Mycorrhizal (AM) biofertilizer fungi, combined with two potato cultivars, were in-field tested in a four-replicate arrangement in a factorial experiment. As far as general combinability is concerned, cv. Agria was more responsive to different inocula (yield +5.56%, P 0.02) and to two strains in particular (+8%). On the other hand, the results with Innovator, a cultivar that yields 33% less than Agria, showed a significant reduction in the number of tubers for three AM strains, thus proving a clear genetic Biofertilizer * Cultivar interaction. The study of hay litter-bags has shown a high NIR spectral fingerprint for the Cultivar factor (81%), while the Inoculation factor showed a higher spectral fingerprint in Agria (76%) than in Innovator (65%). The Substrate Induced Respiration predicted from the NIR-SCiO spectra of the litter-bags was significantly increased after inoculation (+6.3%, P 0.04), but appeared lower for Agria (-5.4%) vs. Innovator (P 0.05), with a non-significant interaction. The obtained results show that the adaptation of the AM strains to the genetics of potato cultivars is a first step toward reducing chemical inputs, with consequent benefits for the environment, but without an excessive reduction in yield. The litter-bag technique can therefore be recommended for a simplified monitoring of the complicated plant-mycorrhizosphere relationship.
Mar 2019 DOI 10.14302/issn.2639-3166.jar-19-2237
Okasha Salah.A.Corresponding author
Agronomy. Dept, Fac. of Agri., Suez Canal Univ., Ismailia, Egypt.
In regions where irrigation water supplies are limited, drainage or water with salinity can be used to supplement them. Field experiments were carried out during the quinoa growing season of 2015/2016 and 2016/2017 at North Sinai in order to evaluate six quinoa genotypes (Chenopodium quinoa Willd.) under saline irrigation (5400 ppm) on growth, yield, its component, seeds chemical composition under field conditions. For plot 50% heading and maturity, the most earliness averages were 47.25 and 92.50 day, respectively for genotype Q-Q37-1, while the least earliness averages were 55.75 and 96.25 for genotypes KVLSRA 2 and KVLSRA 1, respectively. The highest averages was recorded for number of panicles/plant, plant fresh weight, plant yield weight, harvest index, 1000 seeds weight index and yield / fed-1 (ton) were 12.27, 82.32 gm, 17.83 gm, 28.89 %, 2.97 gm and 1.84 ton fed-1 ) for genotypes Q-Q37-1, Q-Q37-1, Q-Q37-1, Q-Q37-1, Q52 and Q-Q37-1, respectively. While, the lowest values were recorded for genotypes KVLSRA1, KVLSRA1, KVLSRA1, Regeolona, KVLSRA1 and KVLSRA1 with averages 8.72, 23.73gm, 5.52 gm, 22.76 %, 2.43 gm and 1.23 ton fed-1, respectively. For protein and carbohydrates total content, values ranged from 14.75 to 10.59 and from 58.13 to 54.64 % for genotypes Q52 and Regeolona, respectively. While in moisture content, values ranged from 11.66 to 10.83 for genotypes KVLSR1 and Q-Q37-1 , respectively. Also, fats content ranged from 10.44 to 7.14 % for genotypes Q52 and Regeolona, respectively. While values of saponin ranged from 0.56 to 0.37% for genotypes KVLSR1 and Regeolona, respectively.
May 2018 DOI 10.14302/issn.2690-4829.jen-18-2048
Tang WeiCorresponding author
College of Horticulture and Gardening, Yangtze University, Jingzhou, Hubei Province 434025, People’s Republic of China.
Rooting of cuttings is very important for production of economically important plants. We produced thousands of plantlets in Taxus chinensisvar. mairei using the technology of rooting of cuttings and identified two types of rooted cuttings, one with low rate of root formation and another with high rate of root formation. To determine the physiological role of antioxidative enzymes and microRNAs during the process of rooting, we measured the levels of these antioxidative enzymes and microRNAs in the stem portion, needles, roots, and basal portion of cuttings. Compared to the cuttings with low rate of root formation, cuttings with high rate of root formation had higher expression of polyphenoloxidase (PPO), catalase (CAT), peroxidase (POD), ascorbate peroxidase (APOX), glutathione reductase (GR), and superoxide dismutase (SOD) in the adventitious roots and basal portion of the rooted cuttings 77 days after planting. In the basal portion of cuttings, the content of thiobarbituric acid reactive substances (TBARS) and total phenols were decreased and the content of antioxidants was increased, but they did not changed in the needles of cuttings during planting. Analysis of microRNAs by quantitative realtime PCR demonstrated that expression of miR162, miR408, and miR857 increases in the basal portion of cuttings, but not in the stem portion of cuttings, 77 days after planting. Expression of miR408 and miR857 were also increased in the needles of cuttings 77 days after planting. Changes of these antioxidative enzymes and microRNAs associated with the rooting features of T. chinensisvar. maireicuttings and their functions have been discussed.
Oct 2023 DOI 10.14302/issn.2639-3166.jar-23-4463
Haroun M. Adam AbubakerCorresponding author
Genotype by environment (GE) interaction is considered to be among the major factors limiting the efficiency of breeding programs.Five chickpea genotypes were evaluated to study their adaptability and stability in eight environments of Sudan. The experiments were carried out in randomized complete block design (RCBD) with four replications in four locations in over two years (2017/2018 and 2018/2019).Stability was estimated using additive main effects and multiplicative interaction (AMMI) model.A Combined analysis of variance showed significant effects of genotypes, locations, years and their interactions on seed yield. Mean seed yield ranged between 1.88 and 1.45 t ha-1 for the genotypes FLIP 08-59 C and FLIP 09-187 C, respectively. The genotype FLIP 08-59 C gave the highest average seed yield and out-yielded the two checks, Shiekh Mohamed and Burgeig by 9.5% and 10.1%, respectively. The newly introduced (FLIP 08-59 C) showed non- significant differences in earliness as compared to the other two standard checks resistant to fusarium wilt disease and with good seed weight. The statistical analysis showed that genotype (G), environment (E) and their interaction (GEI) had highly significant (P ≤ 0.001) effect on seed yield. It also revealed that environmental differences accounted for 90.2% of the total variation. The results of data analysis displayed that the percentages of seed yield by environment, genotype and genotype environment interaction were 90.2%, 3.6% and 6.3%, respectively. The IPCA 1 and IPCA 2 axes (Principal Components) were highly significant P ≤ 0.001). The model for seed chickpea yield stability (the Additive Main Effect and Multiplicative Interaction (AMMI) model) showed that the G1 (FLIP 08-59 C) was adapted, high yielding and considered as stable genotype for Gezira, River Nile and Northern States of Sudan. In addition, this genotype is early flowering with non-significant differences in earliness as compared to the two checks and with good seed weight. Therefore, the above mentioned genotype FLIP 08-59 C could be recommended as commercially stable and high yielding cultivar and/or incorporated as breeding stocks in any future breeding programs aiming to produce high yielding genotypes of chickpea.
Dec 2021 DOI 10.14302/issn.2639-3166.jar-21-4018
Gupta RajCorresponding author
Centre for Advancement of Sustainable Agriculture, National Agriculture Science Centre Complex, New Delhi, 110012, India
In India, loss of fertility through soil erosion is primarily a summer monsoons mediated phenomenon. Reversing the land degradation processes contribute to water availability, soil fertility maintenance, adapting to climate change and overall food security. Whereas kharif (monsoon/rainy season crop) foodgrain production largely depends on summer monsoons, the rabi season (post-rainy season/winter crop) rainfall is too little to exert a direct influence. In spite of larger acreage under kharif foodgrain crops, total fertiliser consumption during kharif and rabi seasons is comparable. Negative rainfall anomalies (deficit) adversely affected total fertiliser consumption and their use efficiency. Despite significant differences in fertiliser application rates, the response to applied fertiliser nutrients is almost similar in the two seasons. This implies that nutrient use efficiency (NUE) has a ‘manageable’ and an ‘unmanageable’ component wherein 4R practices are difficult to implement under unfavourable kharif weather conditions. Partial factor productivity of fertilizer nutrients (PFPF) has continuously declined over decades mainly because of depletion of soil organic carbon, imbalanced use of nutrients and inability to maintain soil moisture supplies. These observations plus yield-gap analysis permitted us to conclude that past trends of declining NUE can only be reversed through a shift either in sustainable land management practices or enhancing the genetic yield potential/ biomass of crop cultivars or by combining both and making kharif crop planting independent of monsoons rains through direct dry seeding.
Sep 2020 DOI 10.14302/issn.2576-6694.jbbs-20-3525
K. Srivastava RajeshCorresponding author
Department of Biotechnology, GITAM Institute of Technology, GITAM Deemed to be University, Gandhi Nagar Campus, Rushikonda, Visakhapatnam - 530045 (A.P.), India.
The photosynthetic potential and underlying internal metabolism of a plant are some of the most commonly affected physiological functions as a direct consequence of stresses due to salt and water resulting in hindering plant growth and productivity. Under the influence of such detrimental stresses, a drastic alteration in a plant's osmotic requirements, hormonal production, shedding of leaves, and closure of stomata, along with a lessening in the diffusion and transportation of CO2 and H2O are commonly seen. This review unfolds with a description of the basic methodology involved in the proteomic analysis of various proteins involved in stress response along with a brief idea on identifying and obtaining a genomic sequence for proteomic studies. It then dives deep into understanding the impact of abiotic stresses such as salinity, drought and high temperatures on cereal crops such as rice and sorghum as well as the internal dynamics of tolerance mechanism unfolding during stresses have also been described. Extensive literature describing the proteomic and physiological responses to primary and secondary effects of salt stress in cereal crops emphasizing on ROS production and apoptosis, the role of osmolytes as ROS scavengers during osmotic stress and vacuolar antiporters in ionic stress along with the responses during drought stress such as the accumulation of LEA proteins and ABA-based signaling has been reviewed and critically discussed. The study also sheds light on some experimental proteomic studies conducted on the seedlings, root tissues, and shoots of rice cultivars.
Mar 2020 DOI 10.14302/issn.2639-3166.jar-20-3260
Masoero GiorgioCorresponding author
Accademia di Agricoltura di Torino, Via A. Doria 10, 10123 Torino (Italy).
The management of the inoculation of a plant’s roots, by means of biofertilizers (BF) containing arbuscular mycorrhizal (AM) fungi, is aimed at inducing modifications of the quality of the seeds. It is here shown that a seed-soil treatment can be elicited in the fingerprints of a symbiotic treatment using Near Infra Red (NIR)-SCiO NIR-SCiO spectra collections of single kernels: overall, a sensitivity of 73% and a specificity of 73% have been achieved, thus suggesting that it may be possible to assign the symbiotic origin of corn from just twenty kernels, provided that the dataset is adequately representative of the cultivar and AM. A global correlation study has shown a positive general trend (R2 0.45) of quality vs. quantity, in the sense that an increase in yield corresponded to an increase in the spectral differences between the symbiotic spectra and the control ones, but the inverse was also true, as a result of the parasitic behaviour of the BF treatments. The efficacy of the symbiosis can be back predicted from the NIR spectra; in fact, around 90% of the positive yield outcome results were discriminated from the negative ones. A reduction in the foliar pH (R2 0.37) and an increase in the foliar protein (R2 0.43) were observed as immediate phenotypic signs of a productive symbiosis. The commercial raw composition of the kernels appeared to only be affected slightly by the BF treatments; thus, till now uncharted secondary compounds of the maize kernels are involved, as supported by animal performances.
Dec 2019 DOI 10.14302/issn.2639-3166.jar-19-3116
Masoero GiorgioCorresponding author
Accademia di Agricoltura di Torino, Italy
Foliar pH is a specific multifaceted parameter that is sensitive to a deficit in soil water and to temperature variations. It also represents a tool that can be used to rapidly phenotype the symbiosis induced in several crops by bio-fertilizers containing Arbuscular Mycorrhizal Fungi. Yearly decreases in foliar pH, which dropped from 3.73 in 2015 to 3.15 in 2017 and then stabilized at around 3.13, have been observed in an experimental vineyard near Torino (Italy) in six grapevine cultivars. In this paper, these curious, original results have been paired with the average sunspots of the 24th sun cycle, proximal to its endpoint. The paired values were highly correlated (r 0.95 P< 0.01), with close parabolic patterns. A lowering in foliar pH has been correlated with a modification of the leaf composition, as characterized by the higher hydration and reinforced wall. An increase in the circulating acidity of the plants has been hypothesized to interfere in a diminution in the general predisposition to block parasite attacks. From this perspective, the retrieval of several historic outbreaks and the long-term systematic monitoring of mud and Erwinia amylovora frequencies have suggested that the hypothesis that links the solar minima with dysfunctions of the plant-pest relationships cannot always be rejected. Cosmic influences pertaining to UV variations are poorly understood in plant physiopathology. Foliar pH appears to be a rapid and simple tool to unveil high-level mechanisms. It is this simple parameter that physiologists and geneticists, but also agronomists, are asked to consider.
Nov 2019 DOI 10.14302/issn.2639-3166.jar-19-3089
Masoero GiorgioCorresponding author
Accademia di Agricoltura di Torino, Italy
The agronomic management of symbiotic (S) inoculations, by means of bio-fertilizers (BF), is aimed at inducing modifications of the plant rhizosphere and thereafter of the phenotype and yield of the crop. It is here shown that the yield response of maize to a symbiotic treatment may be correlated to six easy-to-calculate indicator variables on the basis of the raw foliar pH, NIR-Spectroscopy of leaves, and the NIRS of hay litter-bags from soils. It has been confirmed, in a set of thirteen pairwise comparisons of Symbiotic (S) soil inoculated by BF vs. Control (non-inoculated soil; C), that the inoculation on average acidified the leaves by -3.7% pH units (P<0.0001). The responses in yield ranged from +25.2% to -9.2% (av.ge +3.5%; P = 0.03), but with average null responses in two centers and a significant response (+11%) in a third center. NIR-Tomoscopy scans (No. 574) were also performed on the leaves, and in addition, hay-litter-bags that had previously been buried in fields were dug up after two months, and 431 NIR- scans were acquired. The effect-size on the yield was expressed as the logarithm of the response ratio, i.e. the mean of the inoculated Symbiotic treatment divided by the mean of the non-inoculated Control for each pairwise comparison. A multiple regression model was developed to predict the symbiotic response to the treatment using six independent variables, including the squared litter-bag fingerprints, and an R2adj. level of 0.78 (P=0.01) was reached, with a standard error of ±4%. Validation in one external maize field, with a positive response to bio-fertilizers, demonstrates the juxtaposition of the estimated and accomplished yield. In a second experiment, with 40 pairwise comparisons, the two tested maize varieties did not respond to five types of bio-fertilizer, and the negative results were predicted at 84% (P 0.0012). The soil biota is a key factor for the application of appropriate microbial inoculants in the field, but the genotype/genotype interactions between the microbial strain (s) and the crop cultivar (s) require prior screening to obtain the desired results.
Oct 2019 DOI 10.14302/issn.2639-3166.jar-19-2961
backer H. Mohammed AbuCorresponding author
Department of Crop Science, College of Agriculture, University of Bahri.
The main objective of this study was to quantify the influence of sowing date on growth and yield components of hybrid sunflower (Hysun33) cultivar in semi-arid zone. This experiment was conducted during the seasons 2014/2015-2015/2016 at the farm of the College of Agricultural Studies, Sudan University of Science and Technology, Shambat, Khartoum- Sudan. The experiment was arranged in randomized complete block design (RCBD) with four replications and three treatments. Different parameters were considered including plant height, leaf area index (LAI), filled sees number/head, head diameter, dry weight and yield components. The collected data were statistically analyzed. The results revealed that crop sown in May and July showed significant increase in plant height, LAI, head diameter, dry weight, field seed number/head, weight of 100 seeds; yield; and yield components; compared to crop sown in March. However, crop sown in the second season showed an increase in growth and yield components compared to the crop of the first season.
Mar 2018 DOI 10.14302/issn.2576-6694.jbbs-18-1944
Al-Bachir M.Corresponding author
Radiation Technology Dep. Atomic Energy Commission of Syria.
Plant food are main sources of elements in human nutrition diet and required for proper growth and body development. Present study involved analyzing the elemental profile attributes of apricot seeds in order to obtain a global pattern of apricot seeds. Trace element in seed of 8 apricot cultivars grown in Syria have been determined using Instrumental Neutron Activation Analysis (INAA). Total of 28 elements namely Potassium (K), Magnesium (Mg), Calcium (Ca), Chlorine (Cl), Sodium (Na), Zinc (Zn), Iron (Fe), Copper (Cu), Aluminum (Al), Manganese (Mn), Rubidium (Rb), Iodine (I), Bromine (Br), Cobalt (Co), Antimony (Sb), Molybdenum (Mo), Chromium (Cr), Mercury (Hg), Barium (Ba), Cadmium (Cd), Cerium (Ce), Lanthanum (La), Selenium (Se), Samarium (Sm), Strontium (Sr), Titanium (Ti), Uranium (U) and Vanadium (V) were determined. The elements present in the apricot seed samples were in the range of levels reported in the literature. The results show that the seed of apricot cultivars grown in Syria is rich in the essential macro and micro-nutrients that are of important in dietary point of view.
Nov 2017 DOI 10.14302/issn.2638-4469.japb-17-1838
Jambagi ShridharCorresponding author
School of Biological Sciences, University of Reading, Whiteknights, Reading, RG6 6AS, UK
Strawberry powdery mildew, caused by Podosphaeraaphanis is a major fungal disease that affects strawberry yield and quality. In the model plant species Arabidopsis and the crop plants barley, tomato and pea, the Mildew resistance locus O (MLO) proteins have been found to be required for powdery mildew susceptibility. The present study, based on the sequence of a wild plum (Prunus americana) MLO protein, identified 16 MLO genes within the genome of woodland strawberry, Fragaria vesca and examined their expression pattern in response to powdery mildew infection in three diploid strawberry cultivars. Phylogenetic analysis showed that the FvMLO genes can be classified into six clades. Four FvMLO genes were grouped into clade III, which comprises MLO genes from Arabidopsis, tomato and grapevine that mediate powdery mildew susceptibility. A RNA-seq analysis of two diploid strawberry cultivars, F. vescassp. vesca accession Hawaii 4 (HW) and F. vesca f. semperflorens line “Yellow Wonder 5AF7” (YW) at 1 d (1 DAI) and 8 d (8 DAI) after infection showed the expression of 12 out of the 16 FvMLO genes. The comparison of Fragments Per Kilobase of transcript per Million mapped reads (FPKM values) detected by RNA-seq and expression values of qRT-PCR for FvMLO genes showed substantial agreement. The FvMLO3 gene, which was grouped in clade III and orthologous to the Arabidopsis,tomato and grapevine genes, was highly expressed in YW compared to other FvMLO genes across varieties. The results showed that FvMLO genes can be used as potential candidates to engineer powdery mildew resistance in strawberry based on MLO suppression or genome editing.
Aug 2017 DOI 10.14302/issn.2471-2140.jaa-17-1541
Yu ZhiCorresponding author
College of Horticulture and Forestry Science, Huazhong Agricultural University, Key Laboratory of Horticultural Plant Biology, Ministry of Education, No. 1 Shizishan Street, Hongshan District, Wuhan City, Hubei Province, China 430070
In the present study, we investigated the chemical compositions, in vitro antioxidant and in vivo hepatoprotective activities of two tea polysaccharides (TPS), which were extracted from two different tea cultivars, Yingshuang (Camellia Senesis, T01) and Yunnan Dayezhong (Camellia Senesis, T09). Compared with T09-TPS, T01-TPS had lower contents of neutral sugar, protein, uronic acid and polyphenol. However, T01-TPS showed stronger scavenging abilities for transient free radicals of hydroxyl radical and superoxide anion radicals and lipid peroxidation inhibition effect, but weaker scavenging ability for stable free radical of DPPH. For hepatoprotective activity in vivo, the results demonstrated that both T01-TPS and T09-TPS could significantly prevent the increase of serum alanine aminotransferase and, aspartate aminotransferase levels, decrease the liver index, reduce the formation of malonydialdehyde and enhance the activities of superoxide dismutase, glutathione peroxidase and peroxidase in carbon tetrachloride-induced liver injury mice. These results suggest that T01-TPS and T09-TPS have potent antioxidant and hepatoprotective activities.