Genome-Wide Analysis Identified a Set of Conserved lncRNAs Associated with Domestication-Related Traits in Rice

Crop domestication, which gives rise to a number of desirable agronomic traits, represents a typical model system of plant evolution. Numerous genomic evidence has proven that noncoding RNAs such as microRNAs and phasiRNAs, as well as protein-coding genes, are selected during crop domestication. However, limited data shows plant long noncoding RNAs (lncRNAs) are also involved in this biological process. In this study, we performed strand-specific RNA sequencing of cultivated rice Oryza sativa ssp. japonica and O. sativa ssp. indica, and their wild progenitor O. rufipogon. We identified a total of 8528 lncRNAs, including 4072 lncRNAs in O. rufipogon, 2091 lncRNAs in japonica rice, and 2365 lncRNAs in indica rice. The lncRNAs expressed in wild rice were revealed to be shorter in length and had fewer exon numbers when compared with lncRNAs from cultivated rice. We also identified a number of conserved lncRNAs in the wild and cultivated rice. The functional study demonstrated that several of these conserved lncRNAs are associated with domestication-related traits in rice. Our findings revealed the feature and conservation of lncRNAs during rice domestication and will further promote functional studies of lncRNAs in rice.     

对鸡头米中提取栲胶的研究

在芡实栲胶提取中初步研究结果表明：在使用65％的乙醇的水溶液，粒度为0．3cm方块，浸提温度选择在55℃，浸出时间选择在2h，乙醇水溶液中的水应使用蒸馏水，加入适量的表面活性剂。浸提液的酸碱性为中性等条件下可得到栲胶9％～13％。     

野生植物金银忍冬营养成分的测定

对野生植物金银忍冬的营养成分进行了分析,结果表明,金银忍冬中含有至少17种氨基酸,丰富的维生素、矿质元素及其它多种营养成分.为开发利用植物资源提供了科学依据.     

野性的抗争与奔放的激情——试论东北精神对白朗早期短篇小说创作的影响

白朗是上世纪三十年代东北作家群中成就较高的女作家.她的早期创作以反映伪满时期东北人民的痛苦生活和英勇抗争为主要题材,以野性的抗争和奔放的激情展现了东北文化强有力的生命意识和壮怀激烈的英雄主义情怀,体现着浓烈的东北文学创作的特质和意蕴.     

野生植物婆婆针营养成分的研究及应用

对野生植物婆婆针的营养成分进行了分析，结果表明，婆婆针中含有多种营养成分，丰富的矿质元素和维生素及其β-胡萝卜素。婆婆针中至少含有17种氨基酸。旨在为开发利用植物资源提供科学依据。     

野生植物咸虾花营养成分的研究及应用

对野生植物咸虾花的营养成分进行了分析,结果表明,咸虾花中含有多种营养成分,丰富的矿质元素和维生素及其β-胡萝卜素.咸虾花中至少含有17种氨基酸.旨在为开发利用植物资源提供科学依据.     

大兴安岭地区小水电资源的开发与利用

介绍了大兴安岭地区小水电资源的基本情况及重点开发的小水电建设项目；分析了开发小水电资源的可行性及其效益。     

Physical and nutritional properties of extruded products based on whole grain with the addition of wild legumes (Vicia lutea subsp. lutea var. hirta and Vicia sativa subsp. sativa)

Flour blends based on whole corn and rice with two added wild legumes at 15% level of cereal replacement were extruded to produce whole grain snacks. Extrusion temperature was 175 °C, and the moisture content was adjusted to 14%. The extruded products were evaluated for their physical, chemical and nutritional properties. Results showed that the addition of legumes produces a decrease in expansion in rice‐containing samples and an increase in solubility in corn‐containing samples. With only 15% of legume added to cereal, a significant increase in protein content and quality was obtained. An increase in fibre, polyphenol, iron and zinc content was also obtained. Protein digestibility was in the range of 81.8–85.3%. Mineral availability ranged from 6.4 to 16.3% for iron and 10–16.3% for zinc. The performance of each mixture during extrusion and the physical properties of the extruded products were considered to be similar to those expected for snack‐type products and described in the literature.     

FORMULATION AND TESTING OF CUPRIC SULPHATE MEDIUM FOR WILD YEAST DETECTION

A new differential medium, cupric sulphate medium, used for the detection of wild yeasts has been formulated and tested. This medium suppressed the growth of culture yeasts and supported that of most non-Saccharomyces wild yeasts. It is not suitable for the detection of Saccharomyces wild yeasts. The contaminating wild yeasts in yeast samples and swab samples were easily detected by this medium. Since Lin's medium or modified Lin's medium is suitable for the detection of Saccharomyces wild yeasts, it is suggested that they be used in conjunction with cupric sulphate medium for detecting a more complete spectrum of wild yeasts.     

野生毛葡萄皮中原花青素提取工艺研究

以野生毛葡萄皮为原料,以原花青素提取率考察指标,研究提取溶剂种类、浓度、料液比、提取温度、提取时间、提取次数等因素对原花青素提取效果的影响。通过正交实验,确定野生毛葡萄皮中原花青素的最佳提取工艺条件为:提取溶剂为60%乙醇,料液比1∶9,提取温度60℃,提取时间2.5 h,提取3次。在此优化条件下野生毛葡萄皮中原花青素的平均提取率为5.02%.