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,2016,36(7):1456-1463
犃犮狋犪犅狅狋.犅狅狉犲犪犾.犗犮犮犻犱犲狀狋.犛犻狀.
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ZG9、ZG23、ZG32、ZG36yZG53¨®¯t(犉狌狊犪狉犻狌犿sp.),ZG15yZG34¨°±(犃狊狆犲狉犵犻犾犾狌狊sp.),ZG39
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犛犮狉犲犲狀犻狀犵狅犳犘犺狅狊狆犺犪狋犲犛狅犾狌犫犻犾犻狕犻狀犵犈狀犱狅狆犺狔狋犻犮犉狌狀犵犻犳狉狅犿犃狀犮犻犲狀狋
犛狅狆犺狅狉犪犼犪狆狅狀犻犮犪犔犲犪狏犲狊犪狀犱犜犺犲犻狉犘狅狋犲狀狋犻犪犾犳狅狉犘犾犪狀狋
犌狉狅狑狋犺犘狉狅犿狅狋犻狀犵
HOUJiaojiao,BUFangfang,YUZhongdong,KANGYongxiang
(ColegeofForestry,NorthwestA&FUniversity,Yangling,Shaanxi712100,China)
犃犫狊狋狉犪犮狋:Toexplorethephosphatesolubilizingabilityofendophyticfungiandtheirplantgrowthpromo
tingpotential,weevaluatedthephosphatesolubilizingcapabilityofendophyticfungifromancient犛狅狆犺狅狉犪
犼犪狆狅狀犻犮犪leavesinZhougongmiaobythemethodofdissolvedphosphoruscycleandmolybdenumbule,and
detectedtheeffectsofinoculatedsterilehostplantletonchlorophyl,solubleproteincontents,SODand
PODactivities.Theresultsshowedthat,therewere28outof55fungistrainsfromancient犛.犼犪狆狅狀犻犮犪
leaveswithphosphatesolubilizingcapability,andtwelvestrainsamongtwentyeightendophyticfungidis
playedstrongcapabilityofdissolvingphosphateofCa3 (PO4)2 byatestofphosphatesolubilizing
capability,theywere犘犲狊狋犪犾狅狋犻狅狆狊犻狊sp.(ZG7),犉狌狊犪狉犻狌犿sp.(ZG9,ZG23,ZG32,ZG36andZG53),
犃狊狆犲狉犵犻犾犾狌狊sp.(ZG15andZG34),犃犾狋犲狉狀犪狉犻犪sp.(ZG39andZG51),犜狉犻犮犺狅犱犲狉犿犪sp.(ZG42)and
犈狆犻犮狅犮犮狌犿sp.(ZG48).Twostrainswithstrongphosphatesolubilizingcapabilitywerethenpickedup,
ZG15andZG34,belongedto犃狊狆犲狉犵犻犾犾狌狊spp..Theirdiameterofphosphorussolubilizingcircle(犱)and
犱/犇 (犇,colonydiameter)werebothhigherthanthatofothers,andtheirsolubilizationofCa3(PO4)2
accountedfor1238.28mg·L-1and941.22mg·L-1,respectively,whichweresignificantlyhigherthan
thatofothersandcontrol(犘<0.01).Fourstrains(ZG7,ZG9,ZG15andZG48)fromdifferentgenera
wereinoculatedintoaseptic犛.犼犪狆狅狀犻犮犪seedlingsbottletoensuretheircontactuponwitheachother.
Mycelium wasobservedinfectingintothecortexcelsandaroundthesurfaceepidemicalcelsofroot
tissue;underthetreatmentby犃狊狆犲狉犵犻犾犾狌狊狀犻犵犲狉ZG15,犛.犼犪狆狅狀犻犮犪seedlingschorophylcontent,solu
bleproteincontent,SODandPODnetactivitieswerealobviouslyhigherthanthatofcontrol(犘<0.05),
so,ZG15couldmaintainhealthyseedlinggrowthandimproveseedlingresilience,whichshowedagreat
potentialforancient犛.犼犪狆狅狀犻犮犪protectionandapotentialapplicationasanorganismfertilizerforforesttree.
犓犲狔狑狅狉犱狊:ancient犛狅狆犺狅狉犪犼犪狆狅狀犻犮犪;endophyticfungi;phosphatesolubilizingfungi;asepticseedling;
growthpromoting.
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t1 9:;<=>?G@uv(犱/犇≥0.4)
Table1 Preliminaryscreeningresultsofthephosphate
solubilizingendophyticfungi(犱/犇≥0.4)
t¥
Strain 犇
/mm 犱/mm d/D t¥Strain 犇
/mm 犱/mm 犱/犇
ZG7 58 23 0.40 ZG36 25 27 1.08
ZG9 32 33 1.03 ZG39 33 35 1.06
ZG13 33 33 1.00 ZG42 50 25 0.50
ZG15 50 60 1.20 ZG43 15 17 1.13
ZG18 36 37 1.03 ZG48 40 16 0.40
ZG23 23 23 1.00 ZG50 25 25 1.00
ZG26 17 15 0.88 ZG51 36 15 0.42
ZG32 20 22 1.10 ZG52 23 25 1.09
ZG34 54 66 1.22 ZG53 29 29 1.00
_
:犱.now·¸;犇.tº·¸
Note:犱.Diameterofphosphorussolubilizingcircle;犇.Colony
diameter.
8541 ! " # $ % & 36`
Ô½a1238.28mg·L-1,noJ¨23.69%;ZG
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22mg·L-1,noJ¨17.75%;t¥ZG15yZG
34rnopq¼ÂÃĽ¾¿t¥yÐ
(CK),ÁaÏÂÃÄ·(犘<0.01)。bÙ,t¥
ZG53、ZG51、ZG48、ZG32、ZG42、ZG9y ZG23
rò\¢£moÓÔcÂÃľt¥ZG15y
ZG34,YÂÃĽ¾Ð(犘<0.01)。
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Differentlettersmeansignificantdifferenceamongstrains
at0.01level
Fig.1 Thephosphatesolubilizingeffectoftwelve
endophyticfungistrains
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Table2 Identificationofthe12phosphatesolubilizingendophyticfungistrains
t¥WXStrainNo. t?Strain t¥WXStrainNo. t?Strain
ZG7 ©ª«¬犘犲狊狋犪犾狅狋犻狅狆狊犻狊sp. ZG36 ®¯t犉狌狊犪狉犻狌犿sp.
ZG9 ®¯t犉狌狊犪狉犻狌犿sp. ZG39 ²³犃犾狋犲狉狀犪狉犻犪sp.
ZG15 °±犃狊狆犲狉犵犻犾犾狌狊sp. ZG42 I±犜狉犻犮犺狅犱犲狉犿犪sp.
ZG23 ®¯t犉狌狊犪狉犻狌犿sp. ZG48 ´µt犈狆犻犮狅犮犮狌犿sp.
ZG32 ®¯t犉狌狊犪狉犻狌犿sp. ZG51 ²³犃犾狋犲狉狀犪狉犻犪sp.
ZG34 °±犃狊狆犲狉犵犻犾犾狌狊sp. ZG53 ®¯t犉狌狊犪狉犻狌犿sp.
95417^ 9::,7:FdefnogAstrjkYAÞqÆ
]2 nogAsttÐ|(èB)
Fig.2 Colonizationofmyceliumofendophyticfungiin犛.犼犪狆狅狀犻犮犪
t3 i9:;<=>?56b
t¥
StrainsNo.
eÓÔY}»
Chlorophylcontentandtheirratio/(mg·g-1)
Chla Chlb Chl(a+b) Chla/b
n-ÓÔ
Solubleprotein
content/(mg·g-1)
SOD-
SODactivity
/(U·g-1·min-1)
POD-
PODactivity
/(U·g-1·min-1)
CK 2.32±0.10c 1.22±0.07b 3.54±0.17c 1.90±0.03b 6.01±0.39c 275.87±27.69cd 1050.62±123.82c
ZG7 2.76±0.05b 1.33±0.07ab 4.09±0.12b 2.09±0.08ab 5.34±0.15c 303.95±40.77bc 1206.64±63.85c
ZG9 2.56±0.05bc 1.17±0.02b 3.74±0.07bc 2.19±0.02a 5.93±0.31c 231.13±34.77d 1487.92±143.10ab
ZG15 3.15±0.10a 1.51±0.05a 4.66±0.15a 2.09±0.05ab 6.84±0.59b 381.34±10.77a 1430.60±36.76b
ZG48 2.38±0.08c 1.15±0.09b 3.53±0.17c 2.08±0.11ab 7.71±0.25a 341.03±25.92ab 1693.39±160.41a
_
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