Progress in Biological Sciences最新文献_第10页

Phosphate: the Silent Challenge 磷酸盐:无声的挑战

Progress in Biological Sciences Pub Date : 2014-05-01 DOI: 10.22059/PBS.2014.50302

M. Malboobi, Katayoun Zamani, T. Lohrasebi, M. Sarikhani, Ali Samaian, M. S. Sabet

{"title":"Phosphate: the Silent Challenge","authors":"M. Malboobi, Katayoun Zamani, T. Lohrasebi, M. Sarikhani, Ali Samaian, M. S. Sabet","doi":"10.22059/PBS.2014.50302","DOIUrl":"https://doi.org/10.22059/PBS.2014.50302","url":null,"abstract":"Phosphorus (P) is one of the most vital elements for all living organisms which acts as aconstituent of essential biomolecules such as nucleic acids, phospholipids, and phosphosugars,and as a major contributor to almost all metabolic reactions including photosynthesis,respiration, and energy delivery. It is one of the most needed nutrients for plant growth anddevelopment. Despite high levels of P in the soil, plants absorb it only in the soluble inorganicform of free phosphate ion (Pi) which is scarce in soil. Therefore, there has been a large demandfor Pi fertilizers to secure crop yields, yet its deposition in soil and gradual run-off into waterreservoirs lead to chains of events that cause irreversible damages to ecosystems. Researches,including genome-wide data analyses, have revealed interesting molecular aspects of plantadaptive strategies to deal with low Pi concentrations in soil. These include the higherexpression of acid phosphatases and Pi transporters as well as the secretion of organic acids inthe rhizosphere that maintain cellular Pi homeostasis in order to keep metabolic reactionsrunning. Describing the cycle of Pi exchange between physical and biological worlds, the extentto which current agricultural practices are disturbing the cycle, the necessity of introducing lessdestructivemethods of providing Pi, and alternative measures and solutions for sustainableagriculture will be discussed in this review.","PeriodicalId":20726,"journal":{"name":"Progress in Biological Sciences","volume":"201 1","pages":"1-32"},"PeriodicalIF":0.0,"publicationDate":"2014-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80160693","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 8

Study of the inhibitory effect of the media culture parameters and cell population to increase the biomass production of Dunaliella tertiolecta 培养基培养参数和细胞群体对杜氏藻生物量增加抑制作用的研究

Progress in Biological Sciences Pub Date : 2013-12-01 DOI: 10.22059/PBS.2013.35829

R. Taheri, M. Shariati

{"title":"Study of the inhibitory effect of the media culture parameters and cell population to increase the biomass production of Dunaliella tertiolecta","authors":"R. Taheri, M. Shariati","doi":"10.22059/PBS.2013.35829","DOIUrl":"https://doi.org/10.22059/PBS.2013.35829","url":null,"abstract":"Microalgal growth curve, after the exponential phase, shows a stationary phase where algalbiomass production is inhibited and remains constant by some factors such as nutrientdepletion and intrinsic behavior. The present study is concerned with evaluating effects ofthe culture medium condition and intrinsic behavior on biomass production by Dunaliellatertiolecta. To this end, effect of pH, nutrient concentration, CO2 (NaHCO3) concentration,possible secreted substances, and cell density on the biomass production by D. tertiolectawere investigated. The results showed that biomass yield can be significantly affected by pH(p<0.01) and nutrient (p<0.05). In a combination of pH and nutrient, the biomass was found tobe more influenced by the pH, compared with the nutrients. The results showed a significantinteraction between nutrient and NaHCO3 (p<0.05), suggesting that CO2 concentration maylimit biomass production only when sufficient nutrients are available. Nutrients concentrationand biomass production showed a direct correlation (p<0.05). The rate of reaching themaximum biomass was showed to be increased in higher nutrients concentration; however,the maximum point could not to be affected. The existence of secreted compounds withinhibitory effect on the growth was not observed. The inhibitory effect of the cell density onbiomass production can not be confirmed.","PeriodicalId":20726,"journal":{"name":"Progress in Biological Sciences","volume":"90 1","pages":"123-133"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83914828","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Phylogenetic and sequence analysis of the growth hormone gene of two sturgeons, Huso huso and Acipenser Gueldenstaedtii 两种中华鲟生长激素基因的系统发育及序列分析

Progress in Biological Sciences Pub Date : 2013-12-01 DOI: 10.22059/PBS.2013.35827

L. A. Pormehr, M. Pourkazemi, M. Yarmohammadi, Yalda Banismaeili, M. Sanati

引用次数: 4

Changes of major wall polysaccharides and glycoproteins of tobacco cells in response to excess boron 过量硼对烟草细胞主要壁多糖和糖蛋白的影响

Progress in Biological Sciences Pub Date : 2013-12-01 DOI: 10.22059/PBS.2013.35841

F. Ghanati, M. D. Heidarabadi

{"title":"Changes of major wall polysaccharides and glycoproteins of tobacco cells in response to excess boron","authors":"F. Ghanati, M. D. Heidarabadi","doi":"10.22059/PBS.2013.35841","DOIUrl":"https://doi.org/10.22059/PBS.2013.35841","url":null,"abstract":"Effects of excess concentrations of boron on major cell wall components of tobacco cells(Nicotiana tabacum L. cv. Burley 21) were studied. Pectin, xyloglucan, hydroxyproline-richglycoproteins (extensin), and arabinogalactan proteins were characterized. Results showedthat increased boron supply resulted in significant decrease in cell and cell wall dry weights.Also, high concentrations of boron reduced relative amounts of major wall components.Compared with the normal conditions, increase in certain sugars in pectin (e.g., xylose andits methylated derivative) and decrease in glucose, arabinose, and rhamnose in those treatedcells with higher concentrations of boron was significant. The content of hydroxyprolinerichglycoproteins decreased when tobacco cells were supplied with higher concentrations ofboron. In these cells, increased ratio of protein to glycan part and increase in hydroxyl lysineamong other amino acids were noticeable. Amount of arabinogalactan proteins also decreasedas boron supply increased. Excess boron did not alter the composition and concentration ofamino acids of arabinogalactan; however, it remarkably increased xylose and glucose butdecreased galactose and arabinose concentrations.","PeriodicalId":20726,"journal":{"name":"Progress in Biological Sciences","volume":"19 1","pages":"27-38"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74465508","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Simple protocol for plant regeneration of Lilium ledebourii using transverse thin cell layer 利用横向薄细胞层再生百合植株的简单方案

Progress in Biological Sciences Pub Date : 2013-12-01 DOI: 10.22059/PBS.2013.35828

M. Mirmasoumi, P. Azadi, A. Sharafi, Valentine Ntui Otang, M. Mii

引用次数: 13

An investigation on the effects of photoperiod, aging and culture media onvegetative growth and sporulation of rice blast pathogen pyricularia oryzae 光周期、老化和培养基对稻瘟病菌营养生长和产孢影响的研究

Progress in Biological Sciences Pub Date : 2013-12-01 DOI: 10.22059/PBS.2013.35843

Mahdieh S. Hosseyni-Moghaddam, J. Soltani

{"title":"An investigation on the effects of photoperiod, aging and culture media onvegetative growth and sporulation of rice blast pathogen pyricularia oryzae","authors":"Mahdieh S. Hosseyni-Moghaddam, J. Soltani","doi":"10.22059/PBS.2013.35843","DOIUrl":"https://doi.org/10.22059/PBS.2013.35843","url":null,"abstract":"Pyricularia oryzae (Tel. Magnaporthegrisea) is currently used as a fungal model for plantmicrobeinteraction studies as well as an indicative model for anticancer drug discovery. Thepresent study introduces the optimal condition in which P. oryzae grows and sporulates beston common culture media. We have considered three fungal culture media, i.e. PDA, PCA andWA, based on which P. oryzae sporulation inducers like rice polish, rice extract or rice leafsegments could be added, and evaluated both for vegetative growth and sporulation. Threelight regimens, i.e. continuous light, 16.8 hr light/darkness, and continuous darkness wereapplied in combination with nine synthetic culture media. Mycelial growth was measuredafter 11 days, but sporulation was tracked on the 10th, 20th, and 30th day after incubation at26oC. The findings indicate that PDA culture medium could provide the best medium for P.oryzae vegetative growth, regardless of light condition. However, P. oryzae could sporulatewhen light was provided either continuously or at intervals. A combination of 16.8 hr light/darkness intervals and adding rice materials to culture media could induce P. oryzae for abetter sporulation. RPCA can be used as the best culture medium for P. oryzae in order toobtain a high number of conidia under light alterations. Moreover, aging increases the totalnumber of conidia.","PeriodicalId":20726,"journal":{"name":"Progress in Biological Sciences","volume":"18 1","pages":"135-143"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74366547","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 30

Population structure and variation in Persian sturgeon (Acipenser percicus ) from the Caspian Sea as determind from mitochondrial DNA sequences of the control region 对照区波斯鲟线粒体DNA序列测定里海波斯鲟种群结构和变异

Progress in Biological Sciences Pub Date : 2013-12-01 DOI: 10.22059/PBS.2013.35826

S. Nazari, M. Pourkazemi, M. Khoshkholgh, Leila Azizzade

{"title":"Population structure and variation in Persian sturgeon (Acipenser percicus ) from the Caspian Sea as determind from mitochondrial DNA sequences of the control region","authors":"S. Nazari, M. Pourkazemi, M. Khoshkholgh, Leila Azizzade","doi":"10.22059/PBS.2013.35826","DOIUrl":"https://doi.org/10.22059/PBS.2013.35826","url":null,"abstract":"Mitochondria1 DNA (mtDNA) control region sequences were analyzed to evaluate the population genetic structure of Persian sturgeon (Acipenser persicus) in Caspian Sea. A total of 45 specimens were collected from the different locations of the Caspian Sea. MtDNA control region was amplified using PCR. Direct sequencing was performed according standard method. The results showed that 12 haplotypes were observed between 45 samples in the method. The highest numbers of haplotypes were observed in Sefidroud River in which 3 haplotypes A, B and E among them were specific for the river and were not observed in the other locations. The average haplotype diversity (h) and nucleotide diversity (π) were 0.795±0.037 and 0.0062±0.0046, respectively. The results of FST based on kimura- 2 parameters method and analysis of molecular variance (AMOVA) demonstrated that most variations occurred between samples from Sefidroud River in the south Caspian Sea and that the samples include three distinct populations including Sefidrud, Russia and Azerbaijan (P<0.001). As mtDNA control region is hypervariable segment, this can be provide potential marker for identifying probable populations and for determining their management and conservation units, leading to the useful application of molecular genetics in investigating conservation biology of the Persian sturgeon.","PeriodicalId":20726,"journal":{"name":"Progress in Biological Sciences","volume":"42 1","pages":"67-80"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80602636","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 8

Saccharomyces cerevisiae TFS9, a novel isolated yeast capable of high caffeine-tolerant and its application in biodecaffeination approach 一种新型高咖啡因耐受性分离酵母及其在生物脱咖啡因方法中的应用

Progress in Biological Sciences Pub Date : 2013-12-01 DOI: 10.22059/PBS.2013.35844

M. Ashengroph, M. Borchaluei

{"title":"Saccharomyces cerevisiae TFS9, a novel isolated yeast capable of high caffeine-tolerant and its application in biodecaffeination approach","authors":"M. Ashengroph, M. Borchaluei","doi":"10.22059/PBS.2013.35844","DOIUrl":"https://doi.org/10.22059/PBS.2013.35844","url":null,"abstract":"There is a great call for using microbial bio-decaffeination approach to remove caffeinefrom caffeinated products and industrial wastes. We aimed in this study to screen strainsof yeasts which exhibit high caffeine tolerance and to investigate the bio-degradation ofcaffeine under growth conditions. Sixteen yeast strains were isolated from the cultivatedtea soils collected from sites of northern Iran and evaluated for the caffeine tolerance bythe agar dilution method. Based on the tolerance efficiency, strain TFS9 was selected andidentified as Saccharomyces cerevisiae TFS9 (GenBank accession number KF414526)on the morphological and bioochemical characteristics as well as molecular phylogeneticstudies based on amplification the ITS1–5.8S–ITS2 rDNA sequences. The time course ofcaffeine removal by growing cells of the strain TFS9 in the minimal salt medium containingcaffeine as the sole source of carbon was estimated by a decrease in caffeine absorbanceusing UV-visible spectrophotometer. The concentration of caffeine in the supernatantof the yeast culture medium decreased by 84.8% (from 3.5g/l to 0.53 g/l) after 60h ofincubation by using of S. cerevisiae TFS9, without additional optimization process. Resultsof experimental studies suggest a simple and cost-effective process for the microbialdecaffeination of caffeine-containing solutions, and provide a promising approach fordeveloping safe processes that can be used effectively for decaffeination of industrialeffluents. The present study provides the first evidence on the caffeine bio-degradationusing yeast species of S. cerevisiae.","PeriodicalId":20726,"journal":{"name":"Progress in Biological Sciences","volume":"70 1","pages":"145-156"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86270223","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Optimal conditions for enhancing sodium dodecyl sulfate biodegradation by Pseudomonas aeruginosa KGS 铜绿假单胞菌KGS促进十二烷基硫酸钠生物降解的最佳条件

Progress in Biological Sciences Pub Date : 2013-12-01 DOI: 10.22059/PBS.2013.35840

R. Shahbazi, R. Kasra-Kermanshahi, S. Gharavi, Z. M. Nejad, Faezeh Borzooee

{"title":"Optimal conditions for enhancing sodium dodecyl sulfate biodegradation by Pseudomonas aeruginosa KGS","authors":"R. Shahbazi, R. Kasra-Kermanshahi, S. Gharavi, Z. M. Nejad, Faezeh Borzooee","doi":"10.22059/PBS.2013.35840","DOIUrl":"https://doi.org/10.22059/PBS.2013.35840","url":null,"abstract":"The anionic surfactant sodium dodecyl sulfate (SDS) was degraded by novel strain ofPseudomonas aeruginosa KGS under accession No. JQ328193, which was isolated from carwash wastewater. The purpose of this research was to study different optimization conditionsrequired for enhancing the biodegradation of sodium dodecyl sulfate P. aeruginosa KGS.Influence of different Physicochemical factors such as nitrogen and carbon sources, pH,temperature, inoculation percent and different concentrations of SDS on the biodegradation ofSDS were investigated by measuring the degradation rate of SDS using methylene blue activesubstance (MBAS) method. The optimum conditions determined for the this selected bacteriumstrain for degradation of SDS were 1.5mM SDS, inoculation percent 7%, pH 7.5, temperature37°C, ammonium nitrate (nitrogen source) when basal salt medium was supplemented withglucose as a co substrate. This bacterium is able to degrade about 98% of the SDS after 24h ofincubation under optimized conditions of biodegradation. The results presented in this researchindicate that Pseudomonas aeruginosa is a suitable candidate for SDS biodegradation.","PeriodicalId":20726,"journal":{"name":"Progress in Biological Sciences","volume":"40 1","pages":"107-115"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84964675","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Evaluation of effectiveness of some mitochondrial genes in biosystematics and phylogeographic studies of house mouse (Mus musculus ) subspecies 一些线粒体基因在家鼠亚种生物系统学和系统地理学研究中的有效性评价

Progress in Biological Sciences Pub Date : 2013-12-01 DOI: 10.22059/PBS.2013.35825

Ahmadreza Katouzian, H. Rajabi-Maham

引用次数: 1