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Growth Promoting Effect of Azorhizobium caulinodans to Wheat Leaves

田菁茎瘤固氮根瘤菌对小麦叶组织的促生作用研究



全 文 :书!"#$%&
,2016,36(7):1383-1390
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stlmu0、6、12、24、48、72v96hwx,bcyz{|}~PCR€‚pqƒU6„5…VFc†7 miR
NAs(miR156、miR159、miR160、miR167、miR168vmiR403)W‡ˆ‰Š,‚‹Œ3„ miRNAs(miR159、miR167
vmiR168)W,Ž‡ˆ‰Š;k8dWpqx‘’“”,bc•|–—˜™š›‚pqœfghiGH
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犌狉狅狑狋犺犘狉狅犿狅狋犻狀犵犈犳犳犲犮狋狅犳犃狕狅狉犺犻狕狅犫犻狌犿
犮犪狌犾犻狀狅犱犪狀狊狋狅犠犺犲犪狋犔犲犪狏犲狊
CHENYongchao,QIHuaiting,WANGXiaojing,LIQiang,LIUHuawei
(ColegeofLifeScience,NorthwestA&FUniversity,Yangling,Shaanxi712100,China)
犃犫狊狋狉犪犮狋:Inthisstudy,germinated24hwheatseedswereinoculatedwith犃狕狅狉犺犻狕狅犫犻狌犿犮犪狌犾犻狀狅犱犪狀狊,sam
pleswerecolectedat0,6,12,24,48,72and96h,respectivelyand6miRNAs(miR156,miR159,
miR160,miR167,miR168andmiR403)inwheatleaves,3ofthesemiRNAs’targetgenesweredetectedu
singRealtimequantifyingPCR.ThedistributionofGFPlabeled犃.犮犪狌犾犻狀狅犱犪狀狊in8dwheatleaveswere
detected狏犻犪confocalmicroscopy,andrelevantphysiologicalindicesweremeasuredandcompared.There
sultsshowedthat:(1)GFPlabeled犃.犮犪狌犾犻狀狅犱犪狀狊couldcolonizeinmarginareaofwheatleaves.(2)Al
6miRNAsrelatingtogrowthpromotingvariedindifferentdegreesaftertreatmentwith犃.犮犪狌犾犻狀狅犱犪狀狊,
andsoaredtotheirpeaksat12-24h.ThepeakofmiR159was2.88timesasstrongasregularexpression.
(3)Theexpressionof3miRNAs’targetgeneswerecorespondenttotheirupstreammiRNA,butnotre
strict.(4)Physiologicalindicesoflengthandfreshweightofleavesshowedsensiblegrowthpromoting,
theweightofleavesin96hshowedsignificantdifferencestatisticaly(犘<0.01).Thestudysuggested
that:犃.犮犪狌犾犻狀狅犱犪狀狊inoculatedinwheatcouldcolonizeleaves,exertingevidentgrowthpromotingeffect
towheatleaves,andmiRNAsplayanintrinsicroleinthegrowthpromotion.
犓犲狔狑狅狉犱狊:wheat;犃狕狅狉犺犻狕狅犫犻狌犿犮犪狌犾犻狀狅犱犪狀狊ORS571;growthpromoting;miRNA
  jikÓ¤5E+Ô@–V,ÕÖjiŸG}
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(犃狕狅狉犺犻狕狅犫犻狌犿犮犪狌犾犻狀狅犱犪狀狊 ORS
571)áâGHjiká,t‹ã*Ô@E+#$f
g
(犛犲狊犫犪狀犻犪狉狅狊狋狉犪狋犪)Wjvh¡iGH,–V
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klmpqu-.Ñҋ…VFc/Ü0123³
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[5],
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öt
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[6]。

[3]
IJ¬rfghiGHjikpqj
†7 miRNAsW‡ˆ±²,ÁkpqœÍΆ
7miRNAsW‡ˆ±²cd&,。eIJtfU
gk„h¹bcGFPdefghiGHjikl
mpqrY

bcyz{|}~PCRIJfghi
GHjiklmpqijœŒ5…VFc†7
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KCl0.2g/L,NaCl8g/L,Na2HPO41.44g/L,pH
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| pqœ”NRNAwcTrizol(Invitrogen)€"
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ô:DYЯ

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RNA,10μL2×miRNAReactionBufferMix,2μL
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zymeMix。V¿„h»37℃1h,*u85℃5s。
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1.2.5 犿犻犚犖犃狊}~€ ØcSYBRPremixEx
}1 ‚ƒp„…犘犆犚†‡ˆ‰
Table1 PrimerssequencesforfluorescencerealtimePCR
K$YZ
Nameofprimers
[Sequence(5′→3′)
]^
Notes
miR156 CGCTGACAGAAGAGAGTGAGCAC
miR159 TTTGGATTGAAGGGAGCTCTG
miR160 GATATGCGTGCAAGGAGCC
miR167 TGAAGCTGCCAGCATGATCTG
miR168 ATCGCTTGGTGCAGATCG
miR403 GCTTGTTTTTGTGCGTGCTC
UniPrimer ACGTCGTATCGTCATCTGACC
β狋狌犫犾犻狀1 GGACCGTACGGGCAGATCT
β狋狌犫犾犻狀2 CACCAGACTGCCCAAACACA
miRNA
miR159_犜犪犕狔犫3_1 GACTTGGCATCCCACGATGA
miR159_犜犪犕狔犫3_2 GGTGTCCTTCTGCACCACAT
miR167_犗狊犃犚犉8_1 CTGCTCCACTGCATAGGCTT
miR167_犗狊犃犚犉8_2 TGCAAAGCGAGGTCAATGGT
miR168_犗狊犃犌犗1_1 TCAATTGCAGCTGTTGTGGC
miR168_犗狊犃犌犗1_2 GATGCGTTGAGGTTTCTGCC
犌犃犘犇犎_1 CTGCCTTGCTCCTCTTGCTA
犌犃犘犇犎_2 ACCAGTGCTGCTTGGAATGA
,Ž
Target
genes
犜犪狇TMⅡ(OV$?¯2gPQ,]û)ÎRSt
CFX96RealTimeSystem(BioRad,USA)_``
øayz{|}~PCRV¿,Øcβ狋狌犫犾犻狀F»U
W,Ž
,miRNAWa¼K$vKcV¼K$8`
bV?PQ4Ö

‡1)。V¿ƒA»25μL,WX
1μLcDNA、1μL(10μmol/L)miRNA`cK$、
1μL(10μmol/L)¹cK$、12.5μLSYBRPremix
ExTaqv9.5μLddH2O。V¿„h»:95 ℃
30s,95℃5s,60℃30s,40Yde。òRTPCR
Ä$W°B45℃`f³95℃,£fæ0.5℃‚
}1_{|µ,Cu8_`VÖg5%&,jtg5
%&xhV¿Ä$WLÊM

£Yx‘i]3YÇ
B

£_V¿ªi]1Y°‰;ÀÈ。yz{|}
~WmiRNA‡ˆ~wc†À}~€,J2-ΔΔCt€ø
a[[
[11]。
1.2.6 犿犻犚犖犃狊BŠ,‹}~€ ØcpsR
NATargett&Mh‘‚‹Œ3„ miRNAW,
Ž

tCNKIŒ¾4À¿W,Ž[\ŸØcprimer
BLASTiíK$。犌犃犘犇犎 F»UW,Ž,j
2,ŽWa¼K$vV¼K$8`bV?PQ4Ö

‡ 1)。Vô:Øc GoScriptTM ReverseTran
scriptase(Promega,k)k’lWÎR,oligo
(dT)15»K$;yz{|}~PCRØc Go犜犪狇
58317Ý            :;<,*:fghiGHjikÀpqœÍÎW…VFcIJ
qPCR Master Mix(Promega,k )Î R S t
CFX96RealTimeSystem(BioRad,USA)_``
øa

V¿ƒA»20μL,WX4μLcDNA,0.8μL
`¹cK$
,10μLGoTaq qPCR MasterMixv
5.2μLNucleaseFreeWater。V¿„hvím
€51.2.5Hnܬ。
2 ¡¢5X(
2.1 =>?Œ456789:7;Bopqrs
tu
  GFP{|~ot488nmW•Ñ|È8¹¤Ñ
ªopW{|

c•|–—˜™š›23[[uW
pqœ”ÍÎ

Ñ«GFPdeWfghiGHji
kѪWop{|óŒtœ”¦§¨

‹ë¨
»qp

I1),rÅfghiGHjik¤¥³ˆp
qœ”

Ÿtœ”¦§¨}©

2.2 Z;=>?@A^CD0EJ 犿犻犚犖犃狊B
}~€
  yz{|}~PCR‚¡¢‡Å,rfgh
iGHjikpqœ”5…VFc†7WmiRNAs
‡«ª¬­®W‡ˆ‰Š

I2)。miR156tk
u‡ˆ~¶stB

1·t6h¹E³¼½‡ˆ~
W0.36¾,¶uut24hˆ³‹´µ(1.78¾),C
u·¸vB³¼½‡ˆ~W0.42¾。miR159t
k12hU†Àw},Át24hf³¼½‡ˆ~W
2.88¾,suôõxÖ,Ÿt96hºê³¼½‡ˆ
~W0.40¾。miR160tk6hU†Àw},t
12hˆ³‹´µ(1.54¾),su·¸¹E³¼½‡
ˆ~W0.60¾。miR167tk6hU‡ˆ~¹
E

Át12h·¸`f,Ÿt24hvB³¼½„
å

¶uu¹E

t96h»¼½‡ˆ~W0.20¾。
miR168W‡ˆ±²y»z{,‹‡ˆ~tku|
š¹E

t12hf³C]µ(1.98¾)u·¸ºÖ,t
96h»¼½‡ˆ~W0.16¾。miR403W‡ˆ~P
tkuwò`f

t24hˆ³¼½‡ˆ~W1.77
¾

¶u}z¹E

t96h»¼½‡ˆ~W0.31¾。
~`jn

rfghiGHjikpqœ”
Œ5…VFc†7W6„ miRNAstk12h
48hˆ³´µ,¶u·ò€ÖŸt96hˆ³Cê„
å

‹­®s[tâmiRNA‡ˆ~³ˆ´µu
W‚ƒzðv´µW†À‡ˆ~

I1 GFPdeWfghiGHjik}©â
pqWœ”¦§¨
Fig.1 GFPlabeled犃.犮犪狌犾犻狀狅犱犪狀狊ORS571colonized
inmarginareaofwheatleaves
miRNAstzðñW‡ˆ~ª†Àâ‹0hW¼½‡ˆ~(i}»1)øaím
I2 rfghiGHjikWpqœÍÎ5…VFc†7miRNAst­®zðñW‡ˆ‰Š
Alexpressiondatawerecalculatedbasedonthescoreof0piontswhichweresetas1
Fig.2 TheexpressionpatternofmiRNAsindifferenttimepointsrelatingtothegrowthpromotingeffectofwheat
leavesinoculatedby犃.犮犪狌犾犻狀狅犱犪狀狊ORS571
6831 ! " # $ % &                   36Þ
I3 rfghiGHjikuœÏvœÆÇW±²
Fig.3 ChangeofleaflengthandleaffreshweightofleavesafteraddingGFPlabeled犃.犮犪狌犾犻狀狅犱犪狀狊ORS571
2.3 Z;=>?ŽDjRO
tcfghiGHjikrpqu

Xst
¥xWYzð„‚~pqœÏ°

œÆÇ*V[
 d

I3),‚}¡¢‡Å,kpqWœÏvœÆ
ǪÑVř±²

‹ŒœÆÇt96hW±²ÉÊ
˙Ì
(犘<0.01)。
2.4 =>?@ACDJ 犿犻犚犖犃狊BŠ,‹}~

  yz{|}~PCR‚¡¢‡Å,…VFc†
7WmiRNAs,Ž‡ˆt[[uÑV¬y]W
±²

I4)。‹Œ miR159W,Ž犜犪犕狔犫3t6
v12hW‡ˆ…†³¬TU,t48huˆ³‡ˆ
´µ

»¼½‡ˆ~W3.10¾,‡t96hP·¸v
B³†ÀyêW‡ˆ„å
(2.19¾);miR167W,
Ž犗狊犃犚犉8W‡ˆ~Pt12hU†Àåw,t24h
ˆ³´µ
(6.78¾),¶uÜ0y‚yæW‡ˆ„å。
miR168W,Ž犗狊犃犌犗1t6512hW‡ˆ~…ˆ
æâ¼½‡ˆ~

‡犗狊犃犌犗1t24hˆ³‡ˆ´µ
(9.50¾)u·ò¹º³¼½‡ˆ~W2.04¾。
3 ‰ Š
3.1 :7;‘=>?vŽ’Bqrstu

[3]
IJ‡Å

fghiGHjik¤¥}
©âpqWj‡‹vàŒð

®z¤¼`ßŸ
pqœ”¨

eIJØc•|–—˜™š›‚
pqœ”GFPdefghiGHjikW{|,t
œ”¦§[2‚³]~GFPdefghiGHj
ik

‡ÅfghiGHjik¤¥}©âpqW
œ”ÍÎ

3.2 Z;=>?ŽCD0EJ 犿犻犚犖犃狊}~

  miR156ŽEV‹,Ž犛犅犘犫狅狓(Squamosa
miRNAs,ŽtzðñW‡ˆ~ª†À‹0hW
¼½‡ˆ~

i}»1)øaím
I4 rfghiGHjikpqœ5…VFc†7
miRNAs,Žt­®zðñW†À‡ˆ~
Alexpressiondatawerecalculatedbasedonthescoreof
0piontswhichwassetas1
Fig.4 TherelativeexpressionofmiRNAstargetgenes
indifferenttimepointsrelatingtothegrowthpromoting
effectofwheatleavesinoculatedby犃.犮犪狌犾犻狀狅犱犪狀狊ORS571
promoterbindingprotein),Z犛犘犔(SQUAMO
SAPromoterbindingproteinlike)。,ŽÓ#$
L2WÜÝô:ŽY

‘W5#$VÏÑZ
[12],
-œ”ÑZ
[13]、
VÏzÝôõ
[14]、
ûü
[15]
v#$’
“
[16]
*

t”•ŒmiR156EVi–ݳ֖ÝW
ô±

ŸEV֖݇‹àŒWÕÖ
[17];
t„—Œ
miR156EVi–ݳ֖ÝWô±[18]。eIJ
Œ
,miR156tk[[u¹E,¶uu·¸`f,
Cuu¹E

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[20]。Pluskota*[21]IJÑ«
miR156、miR159、miR160 W5rYW½ÑЯ。
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[29]。miR168
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[6]。
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ž‚ y æ W ‡ ˆ „ å

‡ Å miR167 Ž E V
犃犚犉8,B‡KЬ­¹jÑZÑҋ…VFc。
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ŽW‡ˆ

Ñ҅VFc

~`jn

pqœ”Œ5…VFc†7WmiR
NAstk[[u¤¥EF‹)W,Ž,B‡
Ñҋ)WϤ

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¥W,ŽŸDц³`c miRNAsWEF,‹ë
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•–!Q

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Ö
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CHEN T W,SCHERER S,B?GER P.Theazotification
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