Insect community diversity in transgenic Bt cotton in saline and dry soils
【Abstract】Cotton is one kind of economic crop that can tolerate high drought and salinity, and it has been planted increasingly in coastal saline alkaline soils and dry soils since China's Yellow River and the Yangtze River cotton area dropped due to soil salinization and drought. In this paper, using no-transgenic cotton (CCRI 49 cotton) as control, insect community diversity in transgenic Bt cotton (CCRI 79 cotton) fields planted in coastal alkaline soils of Dongying City, Shandong Province and mildly saline and semi dry soils of Zaoqiang County, Hebei Province were investigated in 2013 and 2014. Results showed that, in the two case of spray and no-spray, the total number of individuals of insect communities and pest sub-communities in transgenic Bt cotton fields were lower than those in non-transgenic cotton, and these insect communities and pest sub-communities differed significantly. The insect diversity index and evenness index (of the insect community and pest sub-community) were higher in transgenic Bt cotton fields than those in non-transgenic cotton, but the dominant concentration index was lower than that of non-transgenic cotton. Under spraying, the total number of individuals within the insect community, pest sub-community and enemy sub-community were lower than those not sprayed fields for both transgenic Bt cotton and non-transgenic cotton. The diversity index and evenness index were lower in sprayed fields than those in no-spraying fields, but the dominant index was higher in the no-spraying cotton fields; however there were no significant difference between the sprayed and no-spraying cotton fields for both transgenic and no-transgenic cottons. Nevertherless there was lower biodiversity and simpler ecosystem than non-saline-dry soils.
【Keywords】 saline alkaline soil; dry soil; transgenic Bt cotton; insect community;
Ashraf M(2002)Salt tolerance of cotton:some new advances.Critical Reviews in Plant Sciences,21,1-30.
Bai LX,Xu NY,Zou K,Xiao LB,Liu YQ,Sun HJ(2007)Fluctuation of resistance level to cotton bollworm(Helicoverpa armgera)of Bt transgenic cotton planted in different ecological regions.Jiangsu Journal of Agricultural Sciences,23,299-305.(in Chinese with English abstract)
Barrett-Lennard EG(2003)The interaction between waterlogging and salinity in higher plants:causes,consequences and implications.Plant and Soil,253,35-54.
Chen DH,Ye GY,Yang CQ,Chen Y,Wu Y(2005)The effect of high temperature on the insecticidal properties of Bt cotton.Environmental and Experimental Botany,53,333-342.
Chen WQ(2006)Current situation and development strategy of plant protection science in China and overseas.In:Proceedings of Academic Annual Conference of China Society of Plant Protection in 2006.China Agricultural Science and Technology Publishing House,Beijing.(in Chinese)
Chen Y,Wen YJ,Chen Y,John TC,Zhang X,Wang YH,William AP,Chen DH(2012a)Effects of extreme air temperature and humidity on the insecticidal expression level of Bt cotton.Journal of Integrative Agriculture,11,1836-1844.
Chen Y,Chen Y,Wen YJ,Zhang X,Chen DH(2012b)The effects of the relative humidity on the insecticidal expression level of Bt cotton during bolling period under high temperature.Field Crops Research,137,141-147.
Coviella CE,Stipanovic RD,Trumble JT(2002)Plant allocation to defensive compounds:interactions between elevated CO2 and nitrogen in transgenic cotton plants.Journal of Experimental Botany,53,323-331.
Cui JJ,Xia JY(2000)Studies on the components of diversity of the community in transgenic Bt cotton.Acta Ecologica Sinica,20,824-829.(in Chinese with English abstract)
Deng SD,Xu J,Zhang QW,Zhou SW,Xu GJ(2003)Effect of transgenic Bt cotton on population dynamics of the non-target pests and natural enemies of pests.Acta Entomologica Sinica,46,1-5.(in Chinese with English abstract)
Dong HZ,Xin CS,Tang W,Li WJ,Zhang DM,Wen SM(2006)Seasonal changes of salinity and nutrients in the coastal saline soil in Dongying,Shandong,and their effects on cotton yield.Cotton Science,18,362-366.(in Chinese with English abstract)
Head G,Moar W,Eubanks M,Freeman B,Ruberson J,Hagerty A,Turnipseed S(2005)A multiyear,large-scale comparison of arthropod population on commercially managed Bt and non-Bt cotton fileds.Environmental Entomology,34,1257-1266.
Huang J,Hu R,Pray C,Qiao F,Rozelle S(2003)Biotechnology as an alternative to chemical pesticides:a case study of Bt cotton in China.Agricultural Economics,29,55-67.
Kahlown MA,Azam M(2002)Individual and combined effect of waterlogging and salinity on crop yields in the Indus basin.Irrigation and Drainage,51,329-338.
Kennedy D(2003)Breakthrough of the year.Science,302,2033.
Li JG,Pu LJ,Zhu M,Zhang RS(2012)The present situation and hot issues in the salt-affected soil research.Acta Geographica Sinica,67,1233-1245.(in Chinese with English abstract)
Liu WX,Wan FH,Guo JY(2002)Structure and seasonal dynamics of arthropods in transgenic Bt cotton field.Acta Ecologica Sinica,22,729-735.(in Chinese with English abstract)
Luo Z,Dong HZ,Li WJ,Zhao M,Zhu YQ(2008)Individual and combined effects of salinity and waterlogging on Cry1Ac expression and insecticidal efficacy of Bt cotton.Crop Protection,27,1485-1490.
Martins CM,Beyene G,Hofs JL,Krüger K,Van der Vyver C,Schlüter U,Kunert KJ(2008)Effect of water-deficit stress on cotton plants expressing the Bacillus thuringiensis toxin.Annals of Applied Biology,152,255-262.
Mehmood YZ,Farooqi KB,Anjum MB,Ahmad M(2012)Impact of Bt cotton varieties on productivity:evidence from District Vehari,Pakistan.Journal of Agriculture Social Sciences,8,109-111.
Meloni DA,Oliva MA,Martinez CA,Cambraia J(2003)Photosynthesis and activity of superoxide dismutase,peroxidase and glutathione reductase in cotton under salt stress.Environmental and Experimental Botany,49,69-76.
Norbert F,Tchouaffe T(2007)Strategies to reduce the impact of salt on crops(rice,cotton and chili)production:a case study of the tsunami affected area of India.Desalination,206,524-530.
Pettigrew WT,Adamczyk JJ(2006)Nitrogen fertility and planting date effects on lint yield and Cry1Ac(Bt)endotoxin production.Agronomy Journal,98,691-697.
Sun CG,Zhang QW,Xu J,Wang YX,Liu JL(2003)Effects of transgenic Bt cotton and transgenic Bt+Cp TI cotton on population dynamics of main cotton pests and their natural enemies.Acta Entomologica Sinica,46,705-712.(in Chinese with English abstract)
Sun HL(1995)Put resources and environment protection in development.Journal of Natural Resources,10,199-202.(in Chinese with English abstract)
Sun LZ,Liu SY,Xu JL,Chen KZ,Ai HJ(2011)The whole seedling technology of cotton planting in Zaoqiang County.Journal of Modern Agricultural Science and Technology,73,83.(in Chinese)
Wang LM,Wang JB,Shen FF,Zhang XK,Liu RZ(2001)Influences of waterlogging and drought on different transgenic Bt cotton cultivars.Cotton Science,13,87-90.(in Chinese with English abstract)
Wang XY,Zou YD,Meng QL,Zhang BW,Dai HM(2005)Effects of herbicides on diversity indices of cotton field arthropod community.Chinese Journal of Applied Ecology,16,514-518.(in Chinese with English abstract)
Wu HC,Cheng XN,Wei CS,Zou YD(2004)Effects of imidacloprid on arthropod community structure in tobacco field.Chinese Journal of Applied Ecology,15,95-98.(in Chinese with English abstract)
Xu LR,Li HG,Xu CM(2002)Study on structure of insect community in Bt transgenic cotton field.Shandong Agricultural Sciences,(3),13-17.(in Chinese with English abstract)
Xu Y(2010)The Ecological Impacts of Bt Cotton on Target and Non-target Insects in Xinjiang Cotton-growing Region.Ph D dissertation,Zhejiang University,Hangzhou.(in Chinese with English abstract)
Yao DX,Zhang XY,Zhao XH,Liu CL,Wang CC,Zhang ZH,Zhang CJ,Wei Q,Wang QH,Yan H,Li FG,Su Z(2011)Transcriptome analysis reveals salt-stress-regulated biological processes and key pathways in roots of cotton(Gossypium hirsutum L.).Genomics,98,47-55.
Zhang YJ,Wu KM,Peng YF,Guo YY(2002)The ecological risks of genetically engineered plants.Acta Ecologica Sinica,22,1951-1959.(in Chinese with English abstract)
Zhao KF(1993)Salt Resistance Physiology of Plant.China Science and Technology Press,Beijing.(in Chinese)
Zhao ZM,Guo YQ(1990)Principle and Methods of Community Ecology.Chongqing Branch of Scientific and Technical Documents Publishing House,Chongqing.(in Chinese)
Zhou HX,Guo JY,Wan FH(2004)Effect of transgenic Cry1Ac+CpT I cotton SGK321 on population dynamics of pests and their natural enemies.Acta Entomologica Sinica,47,538-542.(in Chinese with English abstract)
Zou YD,Bi SD,Zhou XZ,Li L,Gao CQ,Cheng C(2003)Dynamics of the pest and natural enemy communities in peach orchards.Chinese Journal of Applied Ecology,14,717-720.(in Chinese with English abstract)