简介：

简介：根据海关统计数据汇总分析，2012年1～10月全国林产品进出口总值为974．8亿美元，与去年同期持平。其中，出口470.6亿美元，增长6．9％；进口504．2亿美元，下降5．7％。10月当月，全国林产品进出口总值为95．6亿美元，同比下降0．8％。

简介：Theproteinstructureofthecellulosesynthase-likeprotein(CSL)wassimilartocellulosesynthase(CesA),includingtheconservativesequenceD,D,D,QXXRW.Onefull-lengthcDNAofthecellulosesynthase-likeproteinD(CslD)genewasclonedbyreversetranscriptase(RT)-polymerasechainreaction(PCR)with5’,3’rapidamplificationofcDNAends(RACE)methodsusingdegenerateprimersdesignedfromthehomologoussequencesoftheCesAgenes.Amultiplecomparisonsequenceanalysiswasconductedconcurrentlywithbioinformaticmethodstoanalyzetheobtainedsequence.ResultsofthesequenceanalysisshowedthatthiscDNAwas4150bpinlengthandcontainedasingleopenreadingframeencodingaproteinof1132aminoacids.Themultiplecomparisonsequenceanalysisshowedthatthededucedaminoacidsequencesharedhighsimilarity(over71%)withtheClCslDgenesfromPopulustremuloides,Oryzasativa,andArabidopsisthaliana.Thisworkwillhelplayanimportantfoundationforfurthermolecularstudieswithcellulosesynthesisofplants.