1000 resultados para 1995_12030605 CTD-19 5400503


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植生克雷伯氏菌(Klebsiella planticola 19-1)是从新疆鄯善地区玉米根际分离得到的一株联合固氮菌。在40℃高温下有较强的乙炔还原活性。 本工作利用Southern Blot分子杂交技术, 以Klebsiella pneumoniae的nifA为探针,证明了在K.planticola 19-1中存在nifA-like基因,由nifH-lacZ实验推论其nifA-like基因产物对高温相对稳定。经过大质粒电泳和Southern Blot分子杂交,发现nifA-like基因定位于染色体外的大质粒上。本工作进一步克隆了含有K.plonticola 19-1的nifA-like基因的DNA片段,做了它的限制性酶切图谱,并将nifA-like基因初步定位。

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The appendices include the workshop agenda, a list of poster presentations, and a list of attendees.

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The Nutrient Enhanced Coastal Ocean Productivity (NECOP) Program is a component of NOAA's Coastal Ocean Program. The central hypothesis of this research is: Anthropogenic nutrient inputs have enhanced coastal ocean productivity with subsequent impacts on coastal ocean water quality, living resource yields, and the global marine carbon cycle. The initial study area for this program is the Mississippi/Atchafalaya River Outflow and adjacent Louisiana shelf region.

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This report concerns the aquatic and semiaquatic Hemiptera collected in Sri Lanka by Prof. Starmühlner and Prof. Costa during November and December 1970. A surprising number of new species have been found in the Starmühlner-Costa material, even in groups for which comprehensive revisions exist. Seven new species are described here.