"庆祝中国植物生理学会成立40周年暨全国学术年会"会议纪要

“庆祝中国植物生理学会成立 4 0周年暨全国学术年会”于 2 0 0 3年 4月 19～ 2 1日 (原定至 2 3日 )在浙江大学华家池校区召开。本次会议由中国植物生理学会主办 ,浙江省植物生理学会和浙江大学生命科学学院共同承办。会议收到来自全国 2 7个省、市、自治区、香港特区和台湾地区的论文共 340篇 ,集中地反映了我国植物生理学在植物基因组、细胞与生长发育、光合作用、环境与营养生理、植物分子生物学研究和教学等方面的最新研究成果。会议期间 ,2 6 0多名与会代表就上述问题以大会报告和分组进行了交流讨论和展望。会议于 4月 2 0日上午 9时…     

《应用植物生理学》的建立是发展农业生产的需要

周嘉槐同志在“为农服务是植物生理学的重要任务”一文中提出建立《植物生理学》的后续课程《应用植物生理学》的设想,这是一个值得重视的问题。植物生理学是一门研究植物生命活动规律的基础科学,虽有很多方面能够联系植物生产业的问题,但是,在为农服务方面,不免还会受到学科本身的性质和任务的限制。在“植物生理学”之前冠以“应用”二字,以示与“植物生理学”的不同分工,来突破     

中等农校的植物生理学教学必须紧密联系农业生产实际

在“通讯”开展的“植生如何为四化服务讨论”栏的启发下,深有感触。现谈一点中等农业技术学校的植物生理学教学急需改革的看法,来参加这次讨论。植物生理学要为农业生产服务,这不仅是植物生理学研究工作中需要努力的方向,也是植物生理学教学中应该遵循的原则。这在中等农校的植物生理学教学中显得尤为重要。其理由是:     

我们的期望

一九八三年八月十一日到十九日在河南省鸡公山举行了第三次全国高等院校植物生理学教学讨论会(以下简为“第三次会”)。会议开幕式上,植物生理学会教育工作委员会副主任潘瑞炽先生号召大家踊跃向《植物生理学通讯》(以下简为《通讯》)投写关于植生教学方面的文章,并且赞扬了五十年代中期《通     

《应用植物生理学》导论

1.植物生理学的历史及发展趋势“应用植物生理学”是植物生理学的分支学科,它是通向植物生产的“桥梁”,在讨论《应用植物生理学》前,回顾植物生理学的历史、现状和趋势是有必要的。一切知识都来自实践,远在科学的植物生理学诞生之前,人们通过农业生产实践,总结出有关环境对植物生命活动的影响及其控制的朴素经验,悠久农业历史的我国在这方面有其贡献。古籍中记载有用各种汁液和粪水处理种子“溲种法”和“粪种法”等,起到催芽、防虫、壮苗、抗寒和抗旱的效果。在改     

运用多媒体列表比较和归纳式讲授"植物的光合作用"的探讨

"植物的光合作用"一章在植物生理学教材中占有相当的分量,其中很大一部分内容亦为本课程的重点与难点.我们从植物生理教学过程中体会到,要真正讲授好这部分内容很不容易,如何让学生在课堂上既全面又比较容易地掌握这方面的内容,是每个讲授植物生理学课程的教师都要面对的教学问题.我们总结了多年的植物生理学的教学经验,整理出一个深受本校学生欢迎的教学方法,即运用多媒体列表比较、归纳式的教学方法,现介绍出来供大家参考.     

"卡尔文循环"教学中的几个问题探讨

卡尔文循环（Calvin cycle）或称C-3途径（C-3 photosynthetic carbon reduction cycle,PCR循环）是在高等植物叶绿体基质中发生的碳代谢途径。它是光合作用中同化CO2生成含碳化合物的主要方式,此反应不直接需要光,可在暗中进行,属于光合作用的暗反应过程。在植物生理学的教学中,卡尔文循环是植物光合作用的教学重点。如何把卡尔文循环讲授清楚,值得探讨。本文从师范院校的教学角度出发,就潘瑞炽先生主编的《植物生理学》（第5版）中“卡尔文循环”教学过程中的几个问题作了探讨。     

试谈国内现行植物生理学教材体系

文革后,我国相继出版了曹家巽、吴相钰合编的《植物生理学》,潘瑞炽、董愚得合编的《植物生理学》,北京农业大学主编的《植物生理学》,北京林学院主编的《植物生理学》,杨学荣主编的《植物生理学》等。这些教材在基础理论的阐述方面,在教材内容的更新和理论联系实际等方面都做的比较好。为恢复我国高等院校植物生理数学秩序,完成教学任务,提高教学质量等方面起到了积     

高等师范院校"植物生理学实验"课程改革初探

在高等师范院校(以下简称高师)生物专业课中“植物生理学”是与中学生物特别是高中生物联系最密切的课程之一,该课程的实验教学不仅是理论课教学的重要补充,而且是培养学生操作能力、观察能力、综合分析能力和创新能力的主要     

"植物元素缺乏症"实验教学方法的改进

大学课程里开设“植物元素缺乏症”实验对理解掌握植物生理学矿质营养这一章内容非常重要。我们在按张志良和瞿伟菁（2003）主编的《植物生理学实验指导》（以下简称“指导”）进行的实验教学中感到,学生在长时间的实验过程中往往会失去耐心和兴趣,实验结果出来后也只是被动地核对检索表,而且还缺少必要的实验考核措施,致使学生对植物元素缺乏症记忆不深刻。对此,我们进行了一些改进,提出了一种集知识与趣味于一体的教学方法。     

Evolution of the "autophagamiR"

MicroRNAs (miRs) are increasingly important diagnostic and prognostic markers in cancer but have not been defined in medullary thyroid carcinoma (MTC). MiR microarray profiling was performed on 19 primary MTC tumors, validated with qPCR in 45 cases and correlated with clinical outcomes. MiRs-183 and 375 were overexpressed and miR-9* underexpressed in sporadic vs. hereditary MTC (SMTC; HMTC). MiR-183 and 375 overexpression predicted lateral nodal metastases, residual disease, distant metastases and mortality. MiR-183 knockdown in an MTC cell line (TT cells) reduced cellular proliferation in association with elevated LC3B expression. This is suggestive of increased autophagic flux and potential cell death via autophagy induction. MiRs may subsequently be shown to serve as efficacious therapeutic strategies in MTC with a mechanism based upon autophagy.     

"Chromatomics" the analysis of the chromatome

Chromatin is a highly complex mixture of proteins and DNA that is involved in the regulation and coordination of gene expression within the eukaryotic nucleus. Changes in chromatin structure can convey heritable changes of gene activity in response to external stimuli without altering the primary DNA sequence. This epigenetic inheritance of particular traits very likely plays a major role during evolutionary processes. It is however, still ill-defined how this non DNA-mediated inheritance is accomplished at a molecular level. The advent of new methods to systematically study genome-wide changes in chromatin condensation, DNA methylation levels, RNA synthesis and the association of specific proteins or protein modifications now allows a thorough investigation of changes in chromatin structure and function in response to environmental alterations. We would like to review some of these global approaches and to introduce the term "chromatomics" for the systematic analysis of the DNA, RNA and protein content of the genetic material in the eukaryotic nucleus.     

The distributions of "new" and "old" Alu sequences in the human genome: the solution of a "mystery"

The distribution in the human genome of the largest family of mobile elements, the Alu sequences, has been investigated for the past 30 years, and the vast majority of Alu sequences were shown to have the highest density in GC-rich isochores. Ten years ago, it was discovered, however, that the small "youngest" (most recently transposed) Alu families had a strikingly different distribution compared with the "old" families. This raised the question as to how this change took place in evolution. We solved what was considered to be a "mystery" by 1) revisiting our previous results on the integration and stability of retroviral sequences, and 2) assessing the densities of acceptor sites TTTT/AA in isochore families. We could conclude 1) that the open state of chromatin structure plays a crucial role in allowing not only the initial integration of retroviral sequences but also that of the youngest Alu sequences, and 2) that the distribution of old Alus can be explained as due to Alu sequences being unstable in the GC-poor isochores but stable in the compositionally matching GC-rich isochores, again in line with what happens in the case of retroviral sequences.     

"Light" and "dark" pinealocytes of the porcine pineal gland

Both qualitative and quantitative comparative studies of "dark" and "light" pinealocytes of the porcine pineal gland have been carried out. These cells differ from each other in their electronic density of cytoplasm, shape of nucleus, the structure of membrane bound dense bodies and the number of microtubules and smooth endoplasmic reticulum. The membrane bound dense bodies--characteristic structures of pig pinealocytes as well dense core vesicles occur in both types of cells. The relative volume of the majority of the cells' organellae apart from the Golgi apparatus, also do not show any significant difference. The results obtained support a functional basis for pinealocyte differentiation in the porcine pineal gland.     

Taking the "I" out of IRB--and putting "community" in

If one looks back on the history of American research ethics, a bold pattern emerges. Since World War II, about every twenty years or so a breach of the social contract between investigators and human research subjects galvanizes public and professional interest in the ethical foundations and oversight mechanisms governing research with humans.     

"Dark" and "pale" cells of the amygdala complex in dynamics of the estrous cycle

Data on cytological peculiarities of dorsomedial nucleus neurones of the amygdala complex, one of the main zones of sexual dimorphism, in dynamics of estrous cycle are reported. We show that structural and functional characteristics of "dark" and "pale" cells may change depending on the concentrations of gonadal steroids in estrous and metaestrous stages. This specifies the previous hypothesis about mutual reorganization of these cells.