导入红树DNA的番茄后代在NaCl胁迫下的某些生理变化

利用自花授粉后形成的花粉管通道将海岸耐盐植物红树总DNA导入番茄,其后代(D1、D2)受到NaCl的胁迫减弱,转化植株表现出一定的耐盐性.     

红海揽人工苗光滩造林的生长及胁迫因子研究

于１９９４年６月至１９９５年４月在广西北界潮滩上进行红树植物红海榄人工苗造林试验．结果表明种植在滩面较高的盐地鼠尾黍盐沼草植物群落上的幼苗生长良好，成活率达９２％，枝数和叶数保持较好；该地造林的主要胁迫因子是藤壶害。通过实验，提出了在胁迫条件下的一些造林对策．     

广西红海榄群落的生物量和生产力

讨论了广西合浦县山口英罗湾70年生的红海榄群落的生物量和生产力,测定结果表明,红海榄群落的生物量为29158.0g/m~2,其中地上部为19621.2g/m~2,地下部为9536.8g/m~2,支柱根的生物量占群落总生物量的25.28％,是红海榄极为重要的组成部分,也是红海榄不同于其他植物的特点,该群落1989年的净初级生产量为1537.1g/m~2,其中年凋落物量为631.3g/m~2。     

Comparative evaluation of antibacterial activity of silver nanoparticles synthesized using Rhizophora apiculata and glucose

The focus of the study is to compare the antibacterial efficacy of silver nanoparticles (AgNPs) fabricated by exploiting biological (a mangrove plant, Rhizophora apiculata) and chemical means (Glucose). The synthesized nanoparticles were characterised using UV-visible absorption spectrophotometry (UV-vis), Fourier transform Infra-red Spectroscopy (FTIR) and Transmission electron microscopy (TEM). Biologically synthesized silver nanoparticles (BAgNPs) were observed at 423 nm with particle sizes of 19-42 nm. The chemically synthesized silver nanoparticles (CAgNPs) showed a maximum peak at 422 nm with particle sizes of 13-19 nm. An obvious superiority of the antibacterial potency of BAgNPs compared to the CAgNPs as denoted by the zone of inhibition (ZoI) was noted when the nanoparticles were treated against seven different Microbial Type Culture Collection (MTCC) strains. The current study therefore elucidates that the synthesized AgNPs were efficient against the bacterial strains tested.     

Distribution Pattern of Plant Populations of Rhizophora stylosa Community in Yingluo Bay of Guangxi

This paper deals with the distribution pattern type,aggregative intensity,pattern scaleand dynamics of plant populations of Rhizophora stylosa community in Yingluo Bay of Guangxi.The measured results show that R.stylosa population is an aggregated distribution,while thepopulations of Kandelia candel,Bruguiera gymnorrhiza and Aegiceras corniculatum appear asrandom distribution.The plant population distribution pattern changes,along with the populationdevelopment and the succession of the community.     

红海榄群落演替中种群生态位的研究

广西英罗绵红海缆群落演替系列为红海榄＋秋茄群落→红海榄群落→红海榄＋木榄群落→木缆群落，以群落的演替过程作为资源系列，采用Ｌｅｖｉｎ公式和王刚改进公式分别计测了红海榄群落演替过程中种群的生态位宽度和生态位重叠，并对这些种群的生态位关系及其对群落演替动态的影响进行了分析。     

广西英罗湾红海榄林凋落物动态及能流量

讨论了红海榄红树群落三年（１９８９－０１～１９９１－１２）逐月凋落物动态及能流量．结果表明：１）红海榄群落年平均凋落物量为７７２ｇ／ｍ２，其中落叶量高达６２４ｇ／ｍ２．凋落物各组分占总量的比例分别为：叶８０．８３％，花２．０９％，果１３．５４％，枝３．５４％．２）不同年份凋落物量变化率（Ｒ）为１．３６．３）月调落物总量（Ｙ，ｇ／ｍ２）与月均气温（ｘ，℃）回归方程为：Ｙ＝４．２７３ｘ＝３４．１３（ｒ＝０．６８６，ｄｆ＝３４），相关极显著，表明大气温度是影响凋落物量的重要因子．４）红海榄年凋落物能流量（三年平均）为１．４０×１０４ｋＪ／ｍ２，这些凋落物能量是邻近河口海湾水生生物的重要能量来源．     

广西英罗湾红海榄红树群落锰镍元素的累积和循环

探讨了广西英罗湾红海榄红树林Ｍｎ、Ｎｉ元素的累积和生物循环，结果表明：红海榄植物体不同部位Ｍｎ、Ｎｉ元素的含量范围，分别为６．５６～４７．９和０．２７～２．８９μｇ／ｇ。该群落Ｍｎ，Ｎｉ元素的现存储量分别为４３０．３９和３０．８８ｍｇ／ｍ￣２．林地残留物Ｍｎ、Ｎｉ储量分别为１７７６．９和６０．３μｇ／ｍ￣２．群落Ｍｎ、Ｎｉ元素的生物循环中，年吸收量分别为５３６９２．０和１６２７．７μｇ／ｍ￣２，年归还量分别为３９６５３．１和５７３．４μｙ／ｍ￣２，年存留量分别为１４０３８．９和１０５４．０μｇ／ｍ￣２．流动系数Ｍｎ＞Ｎｉ，周转期Ｍｎ１１年快于Ｎｉ５４年。     

一种适用于盐生植物的RNA提取方法

介绍了一种红树ＲＮＡ提取方法，此法无需特殊试剂和贵重仪器设备，可有效地排除红树细胞中大量存在的胶质和多糖类物质的干扰，所得ＲＮＡ样品经紫外分光光度计检测和１％琼脂糖凝胶电泳分析证明具有较高的纯度和完整性，可满足多数分子生物学实验的需要，尤其适用于提取多糖含量较高的植物细胞的ＲＮＡ．     

Polyketides from the mangrove-derived endophytic fungus Acremonium strictum

Five new polyketide derivatives, 6′-hydroxypestalotiopsone C (1), acropyrone (2), bicytosporone D (3), waol acid (4), and pestalotiopene C (5), together with seven known metabolites (6–12), were obtained from extracts of the endophytic fungus Acremonium strictum, isolated from the mangrove tree Rhizophora apiculata. The structures of the isolated compounds were elucidated on the basis of comprehensive NMR and MS analysis. Compounds 6, 7, and 9 showed moderate cytotoxic activity against human cisplatin-sensitive (IC₅₀ values 27.1, 76.2, and 8.3 μM, respectively) and resistant A2780 cell lines (IC₅₀ values 12.6, 30.1, and 19.0 μM, respectively), whereas only 9 exhibited antibacterial activity against Staphylococcus aureus (MIC value 14.3 μM).