|Table of Contents|

ToleranceandAccumulationofFourHeavyMetalsinMyceliumofFlammulinavelutipesandPleurotuseryngii

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2019年03
Page:
143-150
Research Field:
Publishing date:

Info

Title:
ToleranceandAccumulationofFourHeavyMetalsinMyceliumofFlammulinavelutipesandPleurotuseryngii
Author(s):
HUANGXiaohui1; WANGChunhui1; XUNing1; PENGYunxiang1; JIANGXingjian1; HUANGFenglan2
(1.HunanEdibleFungiInstitute,Changsha,Hunan410013;2.YizhangCountyFuchengBiotechCo.Ltd.,Chenzhou，Hunan424211)
Keywords:
Keywords:heavymatal; Lentinulaedodes; Flammulinavelutipes; mycelia; tolerance; accumlation
PACS:
-
DOI:
10.11937/bfyy.20182862
Abstract:
Abstract:TheexperimentofheavymetaltoleranceandaccumulationinFlammulinavelutipesandPleurotuseryngiimyceliumwascarriedoutthroughexternallyaddingdifferentconcentrationgradientsofPb,Cd,As,Hgtotheplatemediumandliquidfermentationmedium.Thetoleranceandaccumulationcharacteristicsofdifferentkindsofheavymetalsindifferentfungiwerestudiedbymeasuringtheaveragegrowthrateofmycelium,thedryweightofmycelium,aswellastheheavymetalconcentrationinmyceliumandfermentationbroth.Basedonthis,theheavymetalaccumulationmodelwasestablished,onthepurposeofprovidingfundamentaldatafortheheavymetalaccumulationmechanisminfungi.TheresultsshowedthatPb,Cd,As,Hg,atlowerconcentration(below1mg?L-1),promotedthegrowthofmyceliumandincreasedtheamountofmyceliumball,whiletheheavymetals,athigherconcentration(above5mg?L-1),hadaninhibitoryeffect.AndPb,CdandAs,atthemediumconcentration(1-5mg?L-1),hadanobviousinhibitoryeffectattheformerstage,butthemyceliumrecoveredtonormalgrowingspeedatthelatterstage.ThemyceliumofFlammulinavelutipesandPleurotuseryngiiaccumulatedhighamountofCdandPbwithCdreaching619mg?kg-1DW,424mg?kg-1DWandPbreaching449mg?kg-1DW,844mg?kg-1DW,butlowamountofAsandHgwasaccumulated,withAsonlyreaching49mg?kg-1DW,21mg?kg-1DWandHgreaching44mg?kg-1DW,40mg?kg-1DW.Differentmyceliumshaddifferentaccumulationsaturabilityforthesameheavymetal.TheaccumulationsaturationpointofPbinFlammulinavelutipesmyceliumwas452mg?kg-1DW,whilethatofPbinPleurotuseryngiimyceliumwasashighas902mg?kg-1DW.Meanwhile,thesamespeciesalsohaddifferentsaturabilityfordifferentfungi,andthedifferencewaslarge.TheaccumulationsaturationpointofCdinPleurotuseryngiimyceliumwas429mg?kg-1DW,butthatofAswas224mg?kg-1DW.

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Last Update: 2019-03-15