王 应 宽 2010-02-27 Beijing , China 第一篇被 SCI 收录的合作署名文章发表 2009 年在明尼苏达大学做访问学者期间，参与了合作导师 Roger Ruan 领导团队的科研工作。其间，有幸与团队里的博士后 Wang Liang ( 汪靓 ) 等合作署名发表论文一篇（ Cultivation of Green Algae Chlorella sp . in Different Wastewaters from Municipal Wastewater Treatment Plant ， http://www.springerlink.com/content/b46086hr6261610x/ ） 。文章内容是海藻生物油制取项目中关于在城市污水处理厂用不同成分污水养殖绿藻的研究成果。论文发表在 Springer 旗下期刊 Applied Biochemistry and Biotechnology （应用生物化学与生物技术），属于化学和材料科学类期刊，系 SCI 收录源刊，目前影响因子 1.643 。虽然影响因子不高，但文章的价值和影响较大，主要源于该研究系目前世界关注的热点，老板在此领域又处于国际领先地位，而且研究成果的应用前景广阔。海藻被认为是新一代生物质能源新的希望，对优质藻种，其含油量高，生长繁殖速度快，可以在污水中养殖，不与粮争地，不与人争粮，而且其通过藻类的养殖可以有效去除污水中的氮磷等富营养物，既能生产能源，又具有环保生态效益，因而具有良好的前景。 说来惭愧，此文乃有本人署名的第一篇 SCI 收录文章。个人水平低、不长进，从事编辑出版工作为人作嫁是一方面，但主要还是因为学科门类和研究方向不同的缘故。本人从事的专业为农业机械化（本科和硕士研究生专业）和编辑出版学（博士研究生专业）。前者属于农业工程学科领域，该领域的研究成果一般难以发表在 SCI 收录的期刊， SCI 收录农业工程学科领域的期刊也比较少。农业工程学科领域被 SCI 收录的论文大多是借了与其他学科交叉的势。很多该领域的成果大都发表在被工程索引（ Engineering Index, Ei Compendex ）收录的期刊。本人此前发表的农业工程方面的文章多被 EI 收录。后来转了向，投入较多精力从事编辑出版、开放存取、网络学术传播等方面的研究，发表论文数十篇，但属于人文社科领域，与 SCI 相去更远了。当然，也因为发表的这些文章大都是中文的，如果将来在国外期刊发些这方面的英文文章，也可能被 SSCI 收录（《社会科学引文索引》（ Social Science Citation Index ，简称 SSCI ），也算与 SCI 的亲戚攀上点关系了！ 论文第一作者靓妹系出名门，在国内时就读于同济大学和上海交通大学，赴美留学在明尼苏达大学获得博士学位，然后从事博士后研究。她天资聪颖，勤学不辍，发表了不少高水平论文。最近得知她又去亚利桑那州立大学的一个非常有名的 Algae实验室 Laboratory for Algae Research and Biotechnology （ http://larb.asu.edu/ ） 高就了。靓妹的爱国心令人感动，一心想着在美国多方学习提高，待学成后回国效力。她说：美国虽好，但还是时常想家，相信游子总有回到母亲怀抱的一天的。衷心希望国内各方为海外游子回国创业营造良好环境，以不辜负他们的赤子爱国心！在明尼苏达大学访学期间，在我的怂恿下，靓妹也在科学网开了博客（ http://www.sciencenet.cn/u/eversci/ ）。欢迎大家关注和支持！ 论文中文摘要如下。论文的英文全文 PDF 附后，欢迎感兴趣的同行斧正。 城市污水处理厂不同成分废水中绿藻培养 汪 靓1，民 敏1，李叶丛1，陈 灵1，陈以峰1，刘玉环1，王应宽1，阮榕生*1,2 1 Center for Biorefining, and Department of Bioproducts and Biosystems Engineering, University of Minnesota, 1390 Eckles Avenue, St. Paul, MN55108, USA 2南昌大学生物质转化教育部工程研究中心，生命科学与食品工程学院，南昌 330047 收稿日期 : 2009-08-21 接受日期： 2009-11-09 在线发表日期： 2009-11-24 摘 要： 该研究旨在评价绿藻在当地城市污水处理厂工艺流程中 4 个不同位置取样的污水中的生长状况，以及绿藻的生长对污水中氮、磷、化学需氧量 COD 和金属离子的去除效果。 4 种废水样品为：初级沉淀前的废水 #1 ，初级沉淀后的废水 #2 ，活性污泥槽中的废水 #3 ，污泥离心渗滤液 #4 （污泥离心渗滤后产生的废水）。在 4 种废水 #1 、 #2 、 #3 、 #4 中，绿藻在指数阶段的平均生长速率分别为 0.412, 0.429, 0.343, 和 0.948day1 。绿藻对废水 #1 、 #2 、 #4 中铵态氮（ NH4N ）的去除率分别为 82.4%, 74.7%, 和 78.3% 。废水 #3 中的硝态氮去除较明显，对无机氮主要形态的 NO3N 的去除率达 62.5%, 是养藻所产生的 NO2N 的 6.3 倍。绿藻对废水 #1 、 #2 、 #4 中磷的去除率分别为 83.2%, 90.6%, 和 85.6% ，对 COD 的去除率分别为 50.9%, 56.5%, 和 83.0% 。而 #3 废水中磷的去除率仅为 4.7% ， COD 的含量在绿藻生长后反而略有上升，可能是因为绿藻中小的有机分子光合作用产生排泄物所致。试验显示，离心渗滤液中的金属离子，特别是 Al, Ca, Fe, Mg 和 Mn 在绿藻养殖后被有效的去除了。研究结果表明，在营养富集的离心渗滤液中养殖海藻，为城市污水处理厂利用海藻养殖工艺循环利用渗滤液去除废水中的营养成分提供了新的途径，达到环保去污和生产有价值的生物燃油原料的双重目的。 关键词 ：城市污水，离心渗滤液，海藻，营养物去除，金属，绿藻 Cultivation of Green Algae Chlorella sp. in Different Wastewaters from Municipal Wastewater Treatment Plant LiangWang 1 , MinMin 1 , YecongLi 1 , PaulChen 1 , YifengChen 1 , YuhuanLiu 1 , YingkuanWang 1 and RogerRuan 1, 2 1 Center for Biorefining, and Department of Bioproducts and Biosystems Engineering, University of Minnesota, 1390 Eckles Avenue, St. Paul, MN55108, USA 2 Nanchang University, Nanchang, China Received: 21August2009 Accepted: 9November2009 Published online: 24November2009 Abstract: The objective of this study was to evaluate the growth of green algae Chlorella sp. on wastewaters sampled from four different points of the treatment process flow of a local municipal wastewater treatment plant (MWTP) and how well the algal growth removed nitrogen, phosphorus, chemical oxygen demand (COD), and metal ions from the wastewaters. The four wastewaters were wastewater before primary settling (#1 wastewater), wastewater after primary settling (#2 wastewater), wastewater after activated sludge tank (#3 wastewater), and centrate (#4 wastewater), which is the wastewater generated in sludge centrifuge. The average specific growth rates in the exponential period were 0.412, 0.429, 0.343, and 0.948day1 for wastewaters #1, #2, #3, and #4, respectively. The removal rates of NH4N were 82.4%, 74.7%, and 78.3% for wastewaters #1, #2, and #4, respectively. For #3 wastewater, 62.5% of NO3N, the major inorganic nitrogen form, was removed with 6.3-fold of NO2N generated. From wastewaters #1, #2, and #4, 83.2%, 90.6%, and 85.6% phosphorus and 50.9%, 56.5%, and 83.0% COD were removed, respectively. Only 4.7% was removed in #3 wastewater and the COD in #3 wastewater increased slightly after algal growth, probably due to the excretion of small photosynthetic organic molecules by algae. Metal ions, especially Al, Ca, Fe, Mg, and Mn in centrate, were found to be removed very efficiently. The results of this study suggest that growing algae in nutrient-rich centrate offers a new option of applying algal process in MWTP to manage the nutrient load for the aeration tank to which the centrate is returned, serving the dual roles of nutrient reduction and valuable biofuel feedstock production. Keywords ：Municipal wastewater，Centrate，Algae，Nutrients removal，Metal，Chlorella 附注： Applied Biochemistry and Biotechnology 期刊简介 Part A: Enzyme Engineering and Biotechnology Editor-in-Chief: Ashok Mulchandani ISSN: 0273-2289 (print version) ISSN: 1559-0291 (electronic version) Journal no. 12010 Humana Press 期刊 Applied Biochemistry and Biotechnology 出版社 Humana Press Inc. ISSN 0273-2289 (Print) 1599-0291 (Online) DOI 10.1007/s12010-009-8866-7 学科分类 化学和材料科学 SpringerLink Date 2009 年 11 月 24 日 This journal is devoted to publishing the highest quality innovative papers in the fields of biochemistry and biotechnology. The typical focus of the journal is to report applications of novel scientific and technological breakthroughs, as well as technological subjects that are still in the proof-of-concept stage. Applied Biochemistry and Biotechnology provides a forum for case studies and practical concepts of biotechnology, utilization, including controls, statistical data analysis, problem descriptions unique to a particular application, and bioprocess economic analyses. The journal publishes reviews deemed of interest to readers, as well as book reviews, meeting and symposia notices, and news items relating to biotechnology in both the industrial and academic communities. In addition, Applied Biochemistry and Biotechnology often publishes lists of patents and publications of special interest to readers. Related subjects Biochemistry Biophysics - Biotechnology Impact Factor: 1.643 * Journal Citation Reports, Thomson Reuters Abstracted/Indexed in: abstracted_indexed Abstracts in Anthropology, Academic OneFile, AGRICOLA, ASFA, Biochemistry and Biophysics Citation Index, Biological Abstracts, BIOSIS Previews, Biotechnology Citation Index, CAB Abstracts, CAB International, CEABA-VtB, Chemical Abstracts Service (CAS), ChemWeb, Compendex, CSA/Proquest, Current Abstracts, Current Awareness in Biological Sciences (CABS), Current Contents/ Agriculture, Biology Environmental Sciences, Current Contents/Life Sciences, DECHEMA, Elsevier Biobase, EMBASE, Food Science and Technology Abstracts, Gale, GeoRef, Global Health, Google Scholar, Health Reference Center Academic, IBIDS, INIS Atomindex, Journal Citation Reports/Science Edition, OCLC, PubMed/Medline, Reaction Citation Index, Science Citation Index, Science Citation Index Expanded (SciSearch), SCOPUS, Summon by Serial Solutions, TOC Premier 原文 Full-text PDF Cultivation of Green Algae Chlorella sp. in Differ
王 应 宽 2010-01-28 Beijing, China 世界能源巨头美国 BP 公司与科研机构联合启动的 EBI 能源生物研究项目 最近美国企业界与科研界共同发起的能源生物学研究项目值得关注。 能源生物科学研究所（ Energy Biosciences Institute ， EBI) ，是一个新的研发机构，利用现有的包括生物学、物理科学、工程、环境和社会科学等方面的先进知识，来研究设计可行的方法，应对全球能源挑战和减小化石能源对全球变暖的影响。该项目是多学科的合作的，主要是寻求高效的生物质新能源的工业化生产途径。目前是正在试验研究几种植物， ( 一种在国内被称作象草 , 其含碳量要远高于农作物秸秆 ), 利用生物发酵及热解等方法生产可燃气及燃油。能源作物品种的筛选、培育、改良、转化这部分工作在生物学科作，而这类作物的种植、管理及收获由工程学学科作，相当一部分人员参与在这个全国性的项目之中 , 定期要有检查和汇报。 世界能源业巨头美国 BP 公司将在 10 年内为 EBI 项目提供 5 亿美元的经费开展研究。项目合作伙伴有 4 个机构：加州大学伯克利分校，劳伦斯 - 伯克利实验室，伊利诺伊大学， BP 公司。研究涵盖五大领域，包括很多项目，有很多研究机构和单位参与，真正体现多学科合作。 研究领域包括：生物质原料的开发，生物质解聚合作用（裂解），生物燃料生产，化石燃料的生物加工，环境、社会、经济学评估研究。 其他资料附后： Feedstock Development Scientists in this program study plant species that can be used to produce biofuels in a more productive and highly sustainable fashion. Switchgrass and miscanthus are just two plants fitting that description. Researchers believe there are more. Biomass Depolymerization Discovering more productive methods of breaking down plant sugars so they can be used in the biofuel-making process is this program's goal. Success could result in trimming the cost of biofuel production and making this sustainable energy product more affordable. Biofuels Production This program's aim is to find ways of improving the concentration of fuel produced by traditional fermentation processes that have been used for centuries to make beer and wine. Achieving that objective could reduce the cost of making biofuel. Fossil Fuel Bioprocessing Researchers in this program are seeking ways to use biological processes to reach oil and coal and to do so in a manner that conserves energy and spares the environment. Making it easier to gather fossil fuels aids in the sensible use of these limited resources Environmental, Social and Economic Dimensions Even renewable forms of energy, such as biofuels, can have harmful impacts on society and the environment. This program will provide critical data that policymakers can use in adopting energy policies that are kinder to the land and its people. Programs Assessing the Potential Impact of Insect Pests and Plant Pathogens on Biomass Production of Miscanthus x giganteus and Switchgrass (Panicum virgatum) Genomics-Enabled Improvement of Andropogoneae Grasses as Feedstocks for Enhanced Biofuel Production Engineering Solutions for Biomass Feedstock Production Feedstock Production/Agronomy Program Projects Reproductive Barriers in Miscanthus Sinensis and Other Biofuel Plants Model Development to Predict Feedstock Production of Miscanthus and Switchgrass as Affected by Climate, Soils, and Nitrogen Management Collection, Nutrient Cycling, Cold Hardiness, Photosynthetic Capacity, and Flowering Phenology of Miscanthus sacchariflorus, Miscanthus sinensis, and Their Natural Hybrids in Native Stands Ranging from Central to Northern Japan Improvement of Bioenergy Crops Via Transformation 相关信息参阅： http://www.energybiosciencesinstitute.org/index.php The Energy Biosciences Institute (EBI) is a new research and development organization that harnesses advanced knowledge in biology, the physical sciences, engineering, and environmental and social sciences to devise viable solutions to global energy challenges and reduce the impact of fossil fuels to global warming.
王 应 宽 2010-01-28 Beijing, China 美国能源部、农业部拨款 630 万美元开展生物燃料研究 据报道，美国能源部、农业部斥资 630 万美元联邦基金，由 7 个研究团队参与开展生产生物燃料的植物原料基因组学研究，包括柳枝稷、高粱、苜蓿以及其他物种。能源作物品种培育将是该项目的研究重点。 参加这个大的研究项目的专家和机构包括： Andrew Paterson of the University of Georgia （ 乔治亚大学 ）， Charles Brummer of the University of Georgia （ 乔治亚大学 ）， USDA-ARS-Lincoln （ 美国农业部研究中心 - 林肯） principal investigator Gautam Sarath ， John Vogel of the USDA-ARS Western Regional Research Center in Albany, California （美国农业部西部研究中心 - 加州奥尔巴尼） ， Matias Kirst of the University of Florida （ 佛罗里达大学 ）， Victor Busov of Michigan Technological University （ 密西根技术大学 ）， Ismael Dweikat at the University of Nebraska, Lincoln （ 内布拉斯加大学 - 林肯校区 ）。这也是一个体现多机构大团队合作攻坚的研究课题。 Source: DOE, USDA Grant $ 6.3M for Biofuel Studies. http://www.genomeweb.com/doe-usda-grant-63m-biofuel-studies NEW YORK (GenomeWeb News) Seven research teams at institutions around the country will use $6.3 million from the US Government to run genomics studies of plant feedstocks for biofuel production using switchgrass, sorghum, alfalfa, and others.
王应宽 编译 2009-08-17 UTC-6 CST UMN, St Paul 佛罗里达大学研究人员发现短吻鄂细菌 可提升纤维素乙醇生产 据位于甘斯韦尔的佛罗里达大学消息（ July 27, 2009 ），该校的研究人员发现生长在短吻鳄树中的细菌有助于改善生产木质纤维素乙醇的工艺，将有助于解决国家的能源危机。（注：佛罗里达大学橄榄球队取名短吻鳄队 - the Gators ） 纤维素乙醇燃料的生产源于经常被丢弃的植物废弃物。典型的工艺是采用转基因工程的细菌或复杂的化学反应分解植物细胞壁中的复杂化合物，来生产单糖分子化合物，再发酵生产燃料级乙醇。 圣地亚国家实验室（ Sandia National Laboratories ） 2 月份的报告预测，如果能降低生产成本，到 2030 年纤维素乙醇将可取代全美国汽油消耗量的 30% 。而降低成本的重要途经就是使生产更高效。 纤维素乙醇生产中效率低的原因很大程度在于在反应之初必须要用加热和加酸的办法预处理植物原料以分解植物细胞壁中的一些成分。佛罗里达大学食品与农业科学研究所的研究组在应用与环境微生物学学报（ Journal Applied and Environmental Microbiology ）报道称，有一种命名为 JDR-2 的朽木细菌（ Paenibacillus Sp. ）具有分解半纤维素的特殊能力。这种能力有助于改进预处理工艺步骤以便低成本高效率的生产乙醇。 通过工程改良细菌，像类芽孢杆菌 JDR-2 那样分解半纤维素，纤维素乙醇生产工艺可以大大简化。研究组几年前就筛选出了这种细菌，并被用于枫香树进行分解试验。目前研究组已经绘制出 JDR-2 的基因组图谱，预计年内将把 JDR-2 的纤维素分解能力转基因到细菌，用于生产乙醇。届时将设计高效的工艺以便用木材、农业废弃物和其他能源作物生产燃料乙醇。 资料来源： UF team finds alligator tree bacteria might improve cellulosic ethanol production http://news.ufl.edu/2009/07/27/sweetgum/ UF team finds alligator tree bacteria might improve cellulosic ethanol production Filed under Agriculture , Environment , Florida , Research on Monday, July 27, 2009. GAINESVILLE, Fla. Most would identify the tree by its often troublesome, spiky gumballs, but what many call the sweetgum tree also goes by another name, thanks to its distinctive, reptilian bark: the alligator tree. So it may be fitting that researchers from the University of Florida , home of the Gators, have found that bacteria growing in its wood may improve the process of making the fuel that might help solve the nations energy crisis. Cellulosic ethanol fuel is derived from plant material often thrown away as trash. Typically, the processes use genetically engineered bacteria or tricky chemical reactions to break down complex compounds in plant cell walls to produce simple sugar molecules that can be fermented into fuel-grade alcohol. A February report by the Sandia National Laboratories predicted that cellulosic ethanol could replace 30 percent of the nations gasoline by 2030 if the price can be brought down. A big part of reducing the price is making production more efficient. Much of the inefficiency in cellulosic ethanol production lies in the fact that it must be given a head start by cooking the plant material with heat and acids to break down some of the components in the plant cell walls. As the team from UFs Institute of Food and Agricultural Sciences reported in the July issue of the journal Applied and Environmental Microbiology, a strain of the wood-decaying Paenibacillus sp. bacteria named JDR-2 has a knack for breaking down and digesting one of these components, hemicelluloses. That knack could help modify preprocessing steps for cost-effective production of ethanol. The acids, the heating all of these steps you have to take beforehand are expensive, require a lot of work and, lets face it, no one wants to work with sulfuric acid on that scale if you dont have to, said James Preston , the team leader and a professor in UFs microbiology and cell science department . By engineering the bacteria already being used to produce ethanol to also process hemicelluloses the way this Paenibacillus does, you should be able to significantly simplify the process. Preston came across the bacteria a few years ago, as he was using decaying sweetgum trees to grow shiitake mushrooms on his tree farm in Micanopy, Fla. After studying the unusually uniform composition of the decaying wood, he and his colleagues went on to study the genetics of one of the bacteria digesting that wood. The team has now mapped JDR-2s genome, and Preston expects that, within the year, they will transfer genes behind JDR-2s abilities to bacteria used to produce ethanol. This would be followed by the design of processes for the cost-effective production of ethanol from wood, agricultural residues and other potential energy crops. Credits Writer Stu Hutson, stu@ufl.edu , 352-392-0400 Source James Preston, jpreston@ufl.edu , 352-392-5923
王应宽 编译 2009-08-17 UTC-6 CST UMN, St Paul 佛罗里达大学获得基金资助研究树木品质改良基因 以生产生物燃油 佛罗里达大学的研究人员新发现一种基因将成为采用林木生物质高效生产燃料乙醇的关键。所发现的这种基因，有助于调节树木的生长和木材纤维的组成，可能有助于培育出适于生产生物燃油和造纸的改良树种。并因此得到 643 万美元的联邦基金资助，继续开展此项研究。 项目组将研究这种基因如何有助于调节细胞壁的化学组成和结构以及在何时何地发生。最终通过转基因工程培养改良树种，来调节木材的组成成分和生物质的生长。 纤维素容易分解为葡萄糖，然后发酵生产燃料乙醇。因此，希望培育高纤维素低木质素的树种，以便于生产燃料乙醇。同时，这种树叶有利于造纸。 Kirst 的研究生 Evandro Novaes 从杨树里发现和分离出一种基因 Cpg13 ，代表在染色体 13 上面碳的分解和生长，对木材成分和生物质生长起着关键作用。研究还发现，高纤维素含量的树种生长很快。研究很可能培育出高纤维素低木质素的新树种，快速为生产生物燃油和造纸提供大量优质的原料。 还可能研究培育出树木枝干纤维素含量高而根部木质素含量高的树种。研究还表明，氮肥对调节杨树生物质组分和生长具有显著影响。营业与基因的相互作用研究将会对人类的健康产生影响。 博主感慨： 2002年，中国成为世界上第一个批准商业化种植转基因树的国家，目前 拥有世界上释放面积最大的转基因林木的林地。目前，中国已掌握了杨树、桦树、桉树、落叶松、核桃、橘子、苹果、猕猴桃等多树种组织培养技术和外源基因转化技术，建立了多树种组织培养和遗传转化系统；已进行转化的基因主要包括抗虫、抗病、抗除草剂、抗逆境（包括耐盐、耐旱、耐冷、耐高温等）、生殖发育调控、材性改良等方面。但好像在品质改良培育能源树种方面的研究报道不多。佛罗里达大学的这项成果如若预期，将意义重大，理论上的突破有可能获诺贝尔奖，产生的经济效益巨大，将拯救能源危机。如今又让美国专家领先了！ 资料来源： UF researchers receive $643,000 federal grant to study wood-quality gene for fuel production. http://news.ufl.edu/2009/07/23/tree-grant/ UF researchers receive $643,000 federal grant to study wood-quality gene for fuel production Filed under Agriculture , Business , Environment , Florida , Research on Thursday, July 23, 2009. GAINESVILLE, Fla. A newly discovered gene may be the key to producing fuel ethanol more efficiently from trees, and the University of Florida researchers who identified it have received a prestigious federal grant to investigate further. The gene, which helps regulate wood growth and the composition of wood fiber, could also lead to improved tree varieties for pulp and paper. Matias Kirst and Gary Peter , plant geneticists with UFs Institute of Food and Agricultural Sciences , lead the team. They received one of seven 2009 Plant Feedstock Genomics for Bioenergy grants a program from the U.S. Department of Agricultures Cooperative State Research, Education and Extension Service, and the U.S. Department of Energys Office of Science. The grants, totaling $6.32 million, were announced this week. The UF teams three-year, $643,000 grant will fund research on how the gene helps regulate cell wall chemistry and structure. The scientists will also investigate where and when its effects occur. Eventually, they will create genetically engineered trees that overexpress or underexpress the gene, to study resulting changes in wood composition and biomass growth. We focus on understanding very fundamental biological mechanisms that may be critical for the productivity of tree species and the quality of wood products, said Kirst, with UFs School of Forest Resources and Conservation . The gene cpg13 appears to play a critical role in these traits. Cpg13, which stands for Carbon Partitioning and Growth on chromosome 13, was identified by one of Kirsts graduate students, Evandro Novaes. The gene was isolated in poplar trees but may exist in other species. It appears cpg13 controls how much of the carbon taken up by a poplar tree is used to make cellulose and lignin, two major building blocks of plant cell walls. Cellulose is a complex carbohydrate, which can be broken down into glucose and fermented to produce biofuels. Wood with high cellulose and low lignin content is better suited for biofuels such as ethanol, because it should convert more efficiently and with greater yields. High cellulose content is also a desirable trait for producing pulp and paper. Whats more, theres apparently a link between high cellulose content and fast tree growth, Kirst said. It may be possible to engineer trees that not only produce large amounts of wood quickly, but also have the ideal properties for biofuel, as well as pulp and paper production. However, there is a potential benefit to trees with high lignin content. Plant materials rich in lignin degrade slower than those with more cellulose. It may be possible to engineer high-lignin trees that could be used to store carbon and reduce greenhouse gases that cause global climate change. Another possibility, Kirst said, would be to develop trees with high cellulose content in stems and high lignin content in roots, offering the best solution for mitigating greenhouse gases. The team also published a paper in the June issue of New Phytologist demonstrating that nitrogen fertilizer has a significant effect on genes that regulate growth and wood composition in poplar trees. One expert likened the UF paper to studies showing that the interplay between nutrition and genetics has consequences for human health. Malcolm Campbell , a professor with the University of Torontos department of cell and systems biology, said scientists have often viewed improvement of tree crops as a matter of genetic selection, but the UF teams work demonstrates that much can be changed in the wood composition by silvicultural practices. The way this will shape forestry for the future is quite cutting-edge, Campbell said. Credits Writer Tom Nordlie, tnordlie@ufl.edu , 352-273-3567 Source Matias Kirst, mkirst@ufl.edu , 352-846-0900 Source Malcolm Campbell, malcolm.campbell@utoronto.ca , 416-946-0817
标签: 生物质能
