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891.
Daniel C. Ilut Alexander E. Lipka Namhee Jeong Dong Nyuk Bae Dong Hyun Kim Ji Hong Kim Neelam Redekar Kiwoung Yang Won Park Sung-Taeg Kang Namshin Kim Jung-Kyung Moon M. A. Saghai Maroof Michael A. Gore Soon-Chun Jeong 《TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik》2016,129(3):453-468
892.
Diachronic analysis of genetic diversity in rice landraces under on-farm conservation in Yunnan,China 总被引:1,自引:0,他引:1
893.
894.
Chaolei?Zhang Hongwei?Shen Xibin?Zhang Xue?Yu Han?Wang Shan?Xiao Jihui?Wang Zongbao?K.?ZhaoEmail author 《Biotechnology letters》2016,38(10):1733-1738
Objectives
To improve production of lipids and carotenoids by the oleaginous yeast Rhodosporidium toruloides by screening mutant strains.Results
Upon physical mutagenesis of the haploid strain R. toruloides np11 with an atmospheric and room temperature plasma method followed by chemical mutagenesis with nitrosoguanidine, a mutant strain, R. toruloides XR-2, formed dark-red colonies on a screening plate. When cultivated in nitrogen-limited media, XR-2 cells grew slower but accumulated 0.23 g lipids/g cell dry wt and 0.75 mg carotenoids/g CDW. To improve its production capacity, different amino acids and vitamins were supplemented. p-Aminobenzoic acid and tryptophan had beneficial effects on cell growth. When cultivated in nitrogen-limited media in the presence of selected vitamins, XR-2 accumulated 0.41 g lipids/g CDW and 0.69 mg carotenoids/g CDW.Conclusions
A mutant R. toruloides strain with improved production profiles for lipids and carotenoids was obtained, indicating its potential to use combined mutagenesis for a more productive phenotype.895.
896.
Objective
To investigate the cellulose modification process on kraft pulp during recycling by mono-endoglucanase.Results
Pichia pastoris expressing endoglucanase, EG1, was grown in a 10 l fermenter yielding a high carboxymethyl cellulase (CMCase) activity of 340 U mg?1. EG1-mediated modification of kraft pulp resulted in a paper sheet with the tensile index and burst index increased by 10 and 6.5 %, respectively. The kink index (indicating abrupt bends in fibres) of the enzyme-treated group decreased sharply by 45 % after the first recycling, compared with a reduction of only 1 % in the control group. Furthermore, EG1 treatment decreased the growth of crystallinity from 73.5 to 73.2 % and crystal size from 7.45 to 7.21 nm, which alleviated paper aging.Conclusion
Endoglucanase EG1 modifies the interfacial properties of fibers, which affects fibre morphology during the recycling process and improves the technical properties of the resulting pulp and paper.897.
898.
899.
Na Yu Fang Han Xiaojun Lin Chun Tang Jinghua Ye Xiaoyan Cai 《Biological trace element research》2016,169(1):46-51
900.
Jessica?V.?BryantEmail author Aurélien?Brulé Michelle?H.?G.?Wong Xiaojiang?Hong Zhaoli?Zhou Wentao?Han Timothy?E.?Jeffree Samuel?T.?Turvey 《International journal of primatology》2016,37(4-5):534-547
Targeted management actions informed by robust data are needed to conserve species of extreme rarity, and assessing the effectiveness of different field methods for detection and monitoring of such species is a conservation priority. Gibbons are typically detected by their daily song through passive listening surveys, but lone gibbon individuals and low-density populations are less likely to sing, making detection difficult or impossible using standard survey techniques. Call playback represents an alternative potential method for detecting gibbon presence, but there has been no empirical evaluation of the usefulness of this method in the field. We investigated the efficacy of call playback as a survey method for detecting previously unconfirmed or unknown individuals of the Critically Endangered Hainan gibbon (Nomascus hainanus), the world’s rarest primate, in patches of good-quality forest outside the current home ranges of the three known Hainan gibbon social groups in Bawangling National Nature Reserve, Hainan, China. Call playback led to detection of a male-only call likely to have been made by a solitary male, and a previously unknown social group comprising an adult male, adult female, and an infant, increasing the number of known breeding females in the global Hainan gibbon population from five to six. Call playback therefore represents an effective tool for improved monitoring of Hainan gibbons, as well as other gibbon populations; however, it is a moderately disruptive survey technique, and should be employed sparingly, in key locations, and for short periods of time only when attempting to detect gibbon presence. 相似文献