全 文 :书!"#$%&
,2016,36(7):1383-1390
犃犮狋犪犅狅狋.犅狅狉犲犪犾.犗犮犮犻犱犲狀狋.犛犻狀.
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犌狉狅狑狋犺犘狉狅犿狅狋犻狀犵犈犳犳犲犮狋狅犳犃狕狅狉犺犻狕狅犫犻狌犿
犮犪狌犾犻狀狅犱犪狀狊狋狅犠犺犲犪狋犔犲犪狏犲狊
CHENYongchao,QIHuaiting,WANGXiaojing,LIQiang,LIUHuawei
(ColegeofLifeScience,NorthwestA&FUniversity,Yangling,Shaanxi712100,China)
犃犫狊狋狉犪犮狋:Inthisstudy,germinated24hwheatseedswereinoculatedwith犃狕狅狉犺犻狕狅犫犻狌犿犮犪狌犾犻狀狅犱犪狀狊,sam
pleswerecolectedat0,6,12,24,48,72and96h,respectivelyand6miRNAs(miR156,miR159,
miR160,miR167,miR168andmiR403)inwheatleaves,3ofthesemiRNAs’targetgenesweredetectedu
singRealtimequantifyingPCR.ThedistributionofGFPlabeled犃.犮犪狌犾犻狀狅犱犪狀狊in8dwheatleaveswere
detected狏犻犪confocalmicroscopy,andrelevantphysiologicalindicesweremeasuredandcompared.There
sultsshowedthat:(1)GFPlabeled犃.犮犪狌犾犻狀狅犱犪狀狊couldcolonizeinmarginareaofwheatleaves.(2)Al
6miRNAsrelatingtogrowthpromotingvariedindifferentdegreesaftertreatmentwith犃.犮犪狌犾犻狀狅犱犪狀狊,
andsoaredtotheirpeaksat12-24h.ThepeakofmiR159was2.88timesasstrongasregularexpression.
(3)Theexpressionof3miRNAs’targetgeneswerecorespondenttotheirupstreammiRNA,butnotre
strict.(4)Physiologicalindicesoflengthandfreshweightofleavesshowedsensiblegrowthpromoting,
theweightofleavesin96hshowedsignificantdifferencestatisticaly(犘<0.01).Thestudysuggested
that:犃.犮犪狌犾犻狀狅犱犪狀狊inoculatedinwheatcouldcolonizeleaves,exertingevidentgrowthpromotingeffect
towheatleaves,andmiRNAsplayanintrinsicroleinthegrowthpromotion.
犓犲狔狑狅狉犱狊:wheat;犃狕狅狉犺犻狕狅犫犻狌犿犮犪狌犾犻狀狅犱犪狀狊ORS571;growthpromoting;miRNA
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犘犆犚
Table1 PrimerssequencesforfluorescencerealtimePCR
K$YZ
Nameofprimers
[Sequence(5′→3′)
]^
Notes
miR156 CGCTGACAGAAGAGAGTGAGCAC
miR159 TTTGGATTGAAGGGAGCTCTG
miR160 GATATGCGTGCAAGGAGCC
miR167 TGAAGCTGCCAGCATGATCTG
miR168 ATCGCTTGGTGCAGATCG
miR403 GCTTGTTTTTGTGCGTGCTC
UniPrimer 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
,
Target
genes
犜犪狇TMⅡ(OV$?¯2gPQ,]û)ÎRSt
CFX96RealTimeSystem(BioRad,USA)_``
øayz{|}~PCRV¿,Øcβ狋狌犫犾犻狀F»U
W,
,miRNAWa¼K$vKcV¼K$8`
bV?PQ4Ö
(
1)。V¿A»25μL,WX
1μLcDNA、1μL(10μmol/L)miRNA`cK$、
1μL(10μmol/L)¹cK$、12.5μLSYBRPremix
ExTaqv9.5μLddH2O。V¿h»:95 ℃
30s,95℃5s,60℃30s,40Yde。òRTPCR
Ä$W°B45℃`f³95℃,£fæ0.5℃
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%&xhV¿Ä$WLÊM
。
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,
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a[[
[11]。
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NATargett&Mh3 miRNAW,
,
tCNKI¾4À¿W,[\Øcprimer
BLASTiíK$。犌犃犘犇犎 F»UW,,j
2,Wa¼K$vV¼K$8`bV?PQ4Ö
(
1)。Vô:Øc GoScriptTM ReverseTran
scriptase(Promega,k)klWÎR,oligo
(dT)15»K$;yz{|}~PCRØc Go犜犪狇
58317Ý :;<,*:fghiGHjikÀpqÍÎW
VFcIJ
qPCR Master Mix(Promega,k )Î R S t
CFX96RealTimeSystem(BioRad,USA)_``
øa
。
V¿A»20μL,WX4μLcDNA,0.8μL
`¹cK$
,10μLGoTaq qPCR MasterMixv
5.2μLNucleaseFreeWater。V¿hvím
51.2.5Hnܬ。
2 ¡¢5X(
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tu
GFP{|~ot488nmWÑ|È8¹¤Ñ
ªopW{|
。
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pqÍÎ
,
Ñ«GFPdeWfghiGHji
kѪWop{|ót¦§¨
,
ë¨
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(
I1),rÅfghiGHjik¤¥³p
q
,
t¦§¨}©
。
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}~
yz{|}~PCR¡¢Å,rfgh
iGHjikpq5
VFc7WmiRNAs
ǻ¨W
(
I2)。miR156tk
u~¶stB
,
1·t6h¹E³¼½~
W0.36¾,¶uut24h³´µ(1.78¾),C
u·¸vB³¼½~W0.42¾。miR159t
k12hUÀw},Át24hf³¼½~W
2.88¾,suôõxÖ,t96hºê³¼½
~W0.40¾。miR160tk6hUÀw},t
12h³´µ(1.54¾),su·¸¹E³¼½
~W0.60¾。miR167tk6hU~¹
E
,
Át12h·¸`f,t24hvB³¼½
å
,
¶uu¹E
,
t96h»¼½~W0.20¾。
miR168W±²y»z{,~tku|
¹E
,
t12hf³C]µ(1.98¾)u·¸ºÖ,t
96h»¼½~W0.16¾。miR403W~P
tkuwò`f
,
t24h³¼½~W1.77
¾
,
¶u}z¹E
,
t96h»¼½~W0.31¾。
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,
rfghiGHjikpq
5
VFc7W6 miRNAstk12h
48h³´µ,¶u·òÖt96h³Cê
å
。
®s[tâmiRNA~³´µu
Wzðv´µWÀ~
。
I1 GFPdeWfghiGHjik}©â
pqW¦§¨
Fig.1 GFPlabeled犃.犮犪狌犾犻狀狅犱犪狀狊ORS571colonized
inmarginareaofwheatleaves
miRNAstzðñW~ªÀâ0hW¼½~(i}»1)øaím
I2 rfghiGHjikWpqÍÎ5
VFc7miRNAst®zðñW
Alexpressiondatawerecalculatedbasedonthescoreof0piontswhichweresetas1
Fig.2 TheexpressionpatternofmiRNAsindifferenttimepointsrelatingtothegrowthpromotingeffectofwheat
leavesinoculatedby犃.犮犪狌犾犻狀狅犱犪狀狊ORS571
6831 ! " # $ % & 36Þ
I3 rfghiGHjikuÏvÆÇW±²
Fig.3 ChangeofleaflengthandleaffreshweightofleavesafteraddingGFPlabeled犃.犮犪狌犾犻狀狅犱犪狀狊ORS571
2.3 Z;=>?DjRO
tcfghiGHjikrpqu
,
Xst
¥xWYzð~pqÏ°
、
ÆÇ*V[
d
(
I3),}¡¢Å,kpqWÏvÆ
ǪÑVű²
,
ÆÇt96hW±²ÉÊ
ËÌ
(犘<0.01)。
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O
yz{|}~PCR¡¢Å,
VFc
7WmiRNAs,t[[uÑV¬y]W
±²
(
I4)。 miR159W,犜犪犕狔犫3t6
v12hW
³¬TU,t48hu³
´µ
,
»¼½~W3.10¾,t96hP·¸v
B³ÀyêWå
(2.19¾);miR167W,
犗狊犃犚犉8W~Pt12hUÀåw,t24h
³´µ
(6.78¾),¶uÜ0yyæWå。
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æâ¼½~
,
犗狊犃犌犗1t24h³´µ
(9.50¾)u·ò¹º³¼½~W2.04¾。
3
3.1 :7;=>?vBqrstu
bú
[3]
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,
fghiGHjik¤¥}
©âpqWjvàð
,
®z¤¼`ß
pq¨
。
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¦§[2³]~GFPdefghiGHj
ik
,
ÅfghiGHjik¤¥}©âpqW
ÍÎ
。
3.2 Z;=>?CD0EJ 犿犻犚犖犃狊}~
O
miR156EV,犛犅犘犫狅狓(Squamosa
miRNAs,tzðñW~ªÀ0hW
¼½~
(
i}»1)øaím
I4 rfghiGHjikpq5
VFc7
miRNAs,t®zðñWÀ~
Alexpressiondatawerecalculatedbasedonthescoreof
0piontswhichwassetas1
Fig.4 TherelativeexpressionofmiRNAstargetgenes
indifferenttimepointsrelatingtothegrowthpromoting
effectofwheatleavesinoculatedby犃.犮犪狌犾犻狀狅犱犪狀狊ORS571
promoterbindingprotein),Z犛犘犔(SQUAMO
SAPromoterbindingproteinlike)。,Ó#$
L2WÜÝô:Y
,
W5#$VÏÑZ
[12],
-ÑZ
[13]、
VÏzÝôõ
[14]、
ûü
[15]
v#$
[16]
*
。
tmiR156EViݳÖÝW
ô±
,
EVÖÝàWÕÖ
[17];
t
miR156EViݳÖÝWô±[18]。eIJ
,miR156tk[[u¹E,¶uu·¸`f,
Cuu¹E
,
ÅrfghiGHjikKQ¬
miR156Àpq犛犘犔狊*,(WEV,>õ¬
pqiݳÖÝWô±ø¯
,
BÑÒ¬
V
WFc
,
BV[ dü=
,
tk24hupq
WÆÇvÏ°±²
2¬y»ÅWù>
。
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VFcIJ
miR159 犕狔犫3 ô : Y, , »
犌犃犕犢犅,(( 犌犃犕犢犅ô:Y,W5
ÒÓL9EF
[19])。miR159W5#$ÚÛ
VÏW5V©VÏ
[20]。Pluskota*[21]IJÑ«
miR156、miR159、miR160 W5rYW½ÑЯ。
miR156KÐEVÓt»j½ÑsuÑÒFc;
miR159Pt»j½ÑsÑÒFc。tpq
miR159tjiklmu1·aå,t
24h³´µ,CutyêWå,
ÅmiR159ö¤tpq5fghiGHjikì
FcЯW5EV
,
ø¬pqWÚÛVÏø¯
。
miR160W,» 犃犚犉10、犃犚犉16、犃犚犉17
(auxinresponsefactor),W5VÏÓL9EF。Ð
±W犃犚犉17(5mARF17,À miR160L2û
M
)
,¬¡¢VÏÓ¿£,¤±
,
¥¦§¨
«©ÕÑZ
,
-ª«ß Q
、
Þ%
、
ZMºê
*
[2223]。
t¥¦§
、
、
*#$
,miR160
KÐEV犃犚犉2är¬rY½Ñ、jÝÑ
Zkj®ÕÖ*V[ÑZЯ
[2425]。
tpqk
[[u
,miR160·¸>ú¬À犃犚犉,(W
EV
,24huu·¸ºê,B¬pqjÝ
ÑZvj®ÕÖ
。
Á miR160Wú°êâ
miR156vmiR159,´µ»¼½~W
1.54¾。
miR167 ¼ 犃犚犉6、犃犚犉8[26],t ,
miR167þ¯þÿ¹E,B,¬)W
,°9D`E,ø,¬#$ر
7²k¢rûè²AMWù>
,
C³"æ¬
Àþ¯W´û¤!
[27]。
µ¶
,
t¥¦§
,ARF8
EV·VÏÓ¸,W¹j¡ºWMß
,
B´
¦§WVÏÑZ
[28]。
»rfghiGHji
ku
,miR167·¸ºê,,犃犚犉 (
`E
,
KÐEVpq¹jÑZÑÒ
VFc
。
miR168,~oAGO1ÓRISC(RNA
+,@AB4
)
WÇAÍÖX
[29]。miR168
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:
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