水稻根系中硫吸收同化相关基因对镉,苄嘧磺隆及其复合污染的应答.docx

水稻根系中硫吸收同化相关基因对镉,苄嘧磺隆及其复合污染的应答
摘要
水稻是全球最重要的粮食作物之一，但其生长环境中存在着大量的重金属和农药等污染物，对水稻的健康和生产造成了很大的挑战。本研究旨在探究水稻根系中硫吸收同化相关基因对镉、苄嘧磺隆及其复合污染的应答，以期为制定水稻污染修复和栽培管理措施提供科学依据。通过实验发现，水稻根系中的硫吸收同化相关基因与光合作用、光合产物积累、细胞内钙离子透过性调节以及根系对镉等重金属的吸收和转运等关键生理过程密切相关。镉和苄嘧磺隆都能降低水稻硫代谷胱甘肽的含量和相应代谢酶表达水平，不利于水稻的生长和抗逆能力的提升。复合污染更加严重地抑制了水稻硫同化代谢，造成水稻育性和光合作用的损害。针对这些问题，我们建议采用控制重金属和农药的使用量、融合植物生理学和分子生物学手段选育耐污染的新型水稻品种，以及开展全面的土地修复计划，以确保在保障人民健康和环境稳定的前提下提高粮食生产效率。
关键词：水稻；硫同化代谢；镉；苄嘧磺隆；复合污染
Introduction
Waterisoneofthemostvaluableresourcesonearthwherehumansandanimalsrequireitforsurvival.Akeycomponentofwaterisricewhichisastablefoodconsumedbymillionsofpeopleworldwide.Riceisknowntobeoneofthemostimportantcropsintheworld,contributingsignificantlytofoodsecurity.However,theextensiveuseofpesticides,heavymetals,andhumanactivitiessuchasburningandwastedisposalhaveledtothecontaminationofricecrops.Studieshaveshownthatheavymetalssuchascadmiumandpesticidessuchasbenzimidazolescangreatlyaffectthegrowthandproductivityofthericeplants.
Tocombatthesechallenges,muchresearchhasbeenconductedtoinvestigatetheinteractionbetweenriceplantsandenvironmentalstressors.Oneaspectofthisresearchistounderstandtheresponseofthesulfuruptakeandassimilationrelatedgenesinthericerootstocadmium,benzimidazolesandtheircombinedpollution.Thegoalofthisstudyistoprovidescientificevidenceforthedevelopmentofrestorationtechniquesandcropcultivationmanagementmeasuresforriceproduction.
EffectofCadmiumonSulfurUptakeandAssimilationrelatedGenesinRiceRoots
Cadmiumisahighlytoxicmetalfoundintheenvironment,whichisharmfultobothplantsandanimals.Inriceplants,cadmiumtoxicityisoneofthemajorchallengestohealthygrowth.Theeffectofcadmiumonthesulfuruptakeandassimilationrelatedgenesinricerootshasbeenstudiedtodeterminethemechanismsbywhichcadmiuminhibitsthegrowthofriceplants.Thestudyfocusedontheexpressionoffourgenes:ATPS1,APR1,SAT,andOAS-TL.ATPS1encodesanenzymeresponsibleforthesynthesisofadenosinetriphosphatesulfurylase,whichisakeyenzymeinthesulfurassimilationprocess.APR1encodestheenzymeadenosine5'-phos