CN105486565B - A kind of method that pollen tube loads fluorescent dye - Google Patents

A kind of method that pollen tube loads fluorescent dye Download PDF

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Publication number
CN105486565B
CN105486565B CN201510944828.7A CN201510944828A CN105486565B CN 105486565 B CN105486565 B CN 105486565B CN 201510944828 A CN201510944828 A CN 201510944828A CN 105486565 B CN105486565 B CN 105486565B
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pollen
culture solution
lysate
coloring agent
pollen tube
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CN105486565A (en
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屈海泳
王永章
刘成连
原永兵
邢文曦
吴芬芬
管押琴
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Qingdao Agricultural University
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Qingdao Agricultural University
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00Sampling; Preparing specimens for investigation
    • G01N1/28Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
    • G01N1/30Staining; Impregnating ; Fixation; Dehydration; Multistep processes for preparing samples of tissue, cell or nucleic acid material and the like for analysis
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/62Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
    • G01N21/63Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
    • G01N21/64Fluorescence; Phosphorescence
    • G01N21/6486Measuring fluorescence of biological material, e.g. DNA, RNA, cells
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00Sampling; Preparing specimens for investigation
    • G01N1/28Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
    • G01N1/30Staining; Impregnating ; Fixation; Dehydration; Multistep processes for preparing samples of tissue, cell or nucleic acid material and the like for analysis
    • G01N2001/302Stain compositions

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Molecular Biology (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Measuring Or Testing Involving Enzymes Or Micro-Organisms (AREA)
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Abstract

The invention discloses a kind of methods that pollen tube loads fluorescent dye, include the following steps:Pollen is wrapped in pan paper by the first step, is positioned in closed silica gel bottle and is stored in low temperature refrigerator;Second step after pollen takes out from refrigerator, is added in after placing 2h at normal temperatures in culture solution, it is stirred for uniformly being placed in 25 DEG C of insulating boxs and cultivates 2h, third step, by culture solution and lysate, coloring agent is corresponding mixes, 10 30min are protected from light, is subsequently placed in 25 DEG C of insulating boxs and is protected from light culture 2h.The present invention is handled using lysate, destroys the cell membrane of pollen so that coloring agent can fast and effeciently enter cell.By the present invention in that with lysate and coloring agent (Fluo 4AM ester), 20min is handled to pollen tube under room temperature (25 DEG C), calcium ion in pollen tube can successfully be dyed.

Description

A kind of method that pollen tube loads fluorescent dye
Technical field
The present invention relates to a kind of methods that the polar growth field of pollen tube more particularly to pollen tube load fluorescent dye.
Background technology
The normal growth of pollen tube is multi-signal molecular regulation as a result, and calcium ion plays important work wherein With.The higher calcium gradient in pollen tube cytoplasm tip is had observed that in various plants, the disappearance of calcium concentration gradient can cause to spend Tube cell growth stops.Pollen tube top high calcium gradient may have following functions:First, it may participate in the adjusting of vesica secretion, Because the calcium of high concentration is conducive to merging for Secretory vesicles and plasma membrane, outer row is promoted to act on, extends pollen tube;Second, high concentration Calcium makes depolymerization of microfilaments, and the movement of organelle slows down, so calcium gradient can influence organelle by controlling the assembling of microfilament Transport;Third, the calcium of high concentration is related with pollen tube oriented growth, and the free calcium ions of pollen tube top high concentration can inhibit flesh The movement of filamentous actin-myosin regulation and control precipitates vesica, if increasing cytosolic free calcium concentration in pollen tube side, can make flower Tube cell changes the original direction of growth, is grown to high calcium concentration side.For the effect of calcium ion in further Study of Pollens pipe, We can use fluorescent labelling techniques.Fluorescence indicator is indispensable mark substance in this course, in plant flowers Increasingly important role is played in tube cell construction and growth characteristics research.Currently used fluorescence indicator, which has, not to be destroyed Eucaryotic cell structure under the premise of maintaining tissue activity, passes through fluorescence microscope, laser confocal microscope and flow cytometer etc. The measure of feature instrument can obtain the specific fine structure of pollen tube and histofluorescence image.The success of this method will be based on Dyestuff is successfully loaded into pollen (pipe), at present, the type of calcium ion fluorescent has:Single wavelength fluorescence probe, including Fluo-3, quin-2, Calcium Green, Calcium Orange etc.;With double wave length fluorescent probe, mainly have indo-1, Fura-2, fura-red etc..The stowage of calcium ion fluorescence indicator has:Electroporation (this method is big to cellular damage, if Standby expensive, do not have to typically now), (this method has cell a degree of damage, in addition complicated for operation, work for microinjection Amount is big, success rate is low, be not suitable for the smaller cell of individual, is not suitable for the shortcomings of cell batch all limits this method Extensive use, patch-clamp (speed is slow, equipment is expensive), low temperature process (time is long), high temperature method (influencing survival).More than overcoming Deficiency, need explore fast and effeciently load fluorescent dye method.
Invention content
In order to overcome the defects of the prior art, a kind of method that pollen tube loads fluorescent dye is provided.
The present invention is realized by following proposal:
A kind of method that pollen tube loads fluorescent dye, includes the following steps:
Pollen is wrapped in pan paper by the first step, is positioned in closed silica gel bottle and is stored in low temperature refrigerator;
Second step after pollen takes out from refrigerator, is added in after placing 2h at normal temperatures in culture solution, after being stirred for uniformly It is placed in 25 DEG C of insulating boxs and cultivates 2h,
Third walks, and by culture solution and lysate, coloring agent is corresponding mixes, and is protected from light 10-30min, is subsequently placed in 25 DEG C of constant temperature Culture 2h is protected from light in case.
In the second step, the culture solution is 2- (N- morpholines) ethanesulfonic acid monohydrate that solute is dissolved in 30mM In solution, the solute includes sucrose, polyethylene glycol, boric acid calcium nitrate;
Wherein, the mass percent of solute is as follows in the culture solution:10% sucrose, 20% polyethylene glycol, 0.01% boric acid, 0.03% calcium nitrate.
The volume ratio of the culture solution and lysate, coloring agent is 48:1:1.
A concentration of 100mM that CTAB mass percents in the lysate are 2%, Tris-HCl, EDTA's is a concentration of 40mM。
The coloring agent is acetoxymethyl ester derivative, can with penetration cell film, into cell after can be by intracellular esterase institute water Solution, the Fluo-4 of generation then can with calcium binding and send out fluorescence.
Beneficial effects of the present invention are:
The coloring agent (Fluo-4 AM-ester) that the method that a kind of pollen tube of the present invention loads fluorescent dye uses is a kind of It can be with the fluorescent dye of penetration cell film, mainly by the calcium binding that dissociates with intracellular and iuntercellular to Ca2+Signal point Cloth carries out quantitative analysis, it sensitive can reflect the variation of free intracellular calcium concentration, and coloring agent enters after cell through non-spy Different in nature esterase is sloughed AM and is stayed in into the cell as Fluo-4, its fluorescence intensity is itself after Fluo-4 is combined with intracellular free calcium More than 40 times or more.When studying intracellular calcium using calcium ion fluorescent combination fluorescence analysis, fluorescent dye Loading be committed step in this method, the present invention is handled using lysate, destroys the cell membrane of pollen so that coloring agent Cell can fast and effeciently be entered.By the present invention in that with lysate and coloring agent (Fluo-4AM-ester), in room temperature (25 DEG C) under to pollen tube handle 20min, calcium ion in pollen tube can successfully be dyed.
Specific embodiment
With reference to specific embodiment, the present invention is further described:
In the present invention, mM is substance withdrawl syndrome unit, is bold and unconstrained mole every liter.
A kind of method that pollen tube loads fluorescent dye, includes the following steps:
Pollen is wrapped in pan paper by the first step, is positioned in closed silica gel bottle and is stored in low temperature refrigerator;
Second step after pollen takes out from refrigerator, is added in after placing 2h at normal temperatures in culture solution, after being stirred for uniformly It is placed in 25 DEG C of insulating boxs and cultivates 2h,
Third walks, and by culture solution and lysate, coloring agent is corresponding mixes, and is protected from light 10-30min, is subsequently placed in 25 DEG C of constant temperature Culture 2h is protected from light in case.
In the second step, the culture solution is 2- (N- morpholines) ethanesulfonic acid monohydrate that solute is dissolved in 30mM In solution, the solute includes sucrose, polyethylene glycol, boric acid calcium nitrate;
Wherein, the mass percent of solute is as follows in the culture solution:10% sucrose, 20% polyethylene glycol, 0.01% boric acid, 0.03% calcium nitrate.
The volume ratio of the culture solution and lysate, coloring agent is 48:1:1.
A concentration of 100mM that CTAB mass percents in the lysate are 2%, Tris-HCl, EDTA's is a concentration of 40mM。
The coloring agent is acetoxymethyl ester derivative, can with penetration cell film, into cell after can be by intracellular esterase institute water Solution, the Fluo-4 of generation then can with calcium binding and send out fluorescence.
Wherein the molecular formula of Fluo-4 is C51H50F2N2O23, molecular weight 1096.94.
In actual use, also LaCl can be added in pollen solution after the completion of third step3, can make to dissociate in pollen tube Calcium ion concentration dramatically increases.
The coloring agent (Fluo-4 M-ester) that the method that a kind of pollen tube of the present invention loads fluorescent dye uses is a kind of It can be with the fluorescent dye of penetration cell film, mainly by the calcium binding that dissociates with intracellular and iuntercellular to Ca2+Signal point Cloth carries out quantitative analysis, it sensitive can reflect the variation of free intracellular calcium concentration, and coloring agent enters after cell through non-spy Different in nature esterase is sloughed AM and is stayed in into the cell as Fluo-4, its fluorescence intensity is itself after Fluo-4 is combined with intracellular free calcium More than 40 times or more.When studying intracellular calcium using calcium ion fluorescent combination fluorescence analysis, fluorescent dye Loading be committed step in this method, the present invention is handled using lysate, destroys the cell membrane of pollen so that coloring agent Cell can fast and effeciently be entered.By the present invention in that with lysate and coloring agent (Fluo-4AM-ester), in room temperature (25 DEG C) under to pollen tube handle 20min, calcium ion in pollen tube can successfully be dyed.
Although more detailed elaboration is done to technical scheme of the present invention and has been enumerated, it should be understood that for ability For field technique personnel, modification is made to above-described embodiment or uses equivalent alternative solution, this is to those skilled in the art It is it is clear that these modifications or improvements without departing from theon the basis of the spirit of the present invention, belong to the present invention for member Claimed range.

Claims (2)

1. a kind of method that pollen tube loads fluorescent dye, which is characterized in that include the following steps:
Pollen is wrapped in pan paper by the first step, is positioned in closed silica gel bottle and is stored in low temperature refrigerator;
Second step after pollen takes out from refrigerator, adds in culture solution after placing 2h at normal temperatures, is stirred for uniformly being placed on 2 h are cultivated in 25 DEG C of insulating boxs,
Third walks, and by culture solution and lysate, coloring agent is corresponding mixes, and is protected from light 10-30min, is subsequently placed in 25 DEG C of insulating boxs It is protected from light 2 h of culture;
In the second step, the culture solution be solute is dissolved in 30 mM 2- (N- morpholines) ethanesulfonic acid monohydrate it is molten In liquid, the solute includes sucrose, polyethylene glycol, boric acid, calcium nitrate;
Wherein, the mass percent of solute is as follows in the culture solution:10% sucrose, 20% polyethylene glycol, 0.01% Boric acid, 0.03% calcium nitrate;
A concentration of 100 mM that CTAB mass percents in the lysate are 2%, Tris-HCl, a concentration of the 40 of EDTA mM;
The coloring agent is Fluo-4 AM-ester.
2. the method that a kind of pollen tube according to claim 1 loads fluorescent dye, it is characterised in that:The culture solution with Lysate, coloring agent volume ratio be 48:1:1.
CN201510944828.7A 2015-12-16 2015-12-16 A kind of method that pollen tube loads fluorescent dye Expired - Fee Related CN105486565B (en)

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CN108680418B (en) * 2018-06-01 2021-03-23 广东金作农业科技有限公司 Dyeing liquid and method for quickly dyeing cruciferous crop pollen

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101398381A (en) * 2008-11-12 2009-04-01 南京农业大学 Fluorescence labeling method for pear pollen and pollen tube fibril framework
CN101477000A (en) * 2009-01-05 2009-07-08 南京农业大学 Fluorescence labeling method for cotton pollen tube microfilament framework
CN104531824A (en) * 2014-12-16 2015-04-22 北京农学院 Labeling method of apple pollen tube microfilament

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101398381A (en) * 2008-11-12 2009-04-01 南京农业大学 Fluorescence labeling method for pear pollen and pollen tube fibril framework
CN101477000A (en) * 2009-01-05 2009-07-08 南京农业大学 Fluorescence labeling method for cotton pollen tube microfilament framework
CN104531824A (en) * 2014-12-16 2015-04-22 北京农学院 Labeling method of apple pollen tube microfilament

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
Disarrangement of actin filaments and Ca2+ gradient by CdCl2 alters cell wall construction in Arabidopsis thaliana root hairs by inhibiting vesicular trafficking;Jun-Ling Fan et al.;《Journal of Plant Physiology》;20111231;第168卷;第1157-1167页 *
利用荧光探针Fluo-4检测胸腺细胞内钙离子浓度变化;于力方 等;《标记免疫分析与临床》;20050930;第12卷(第3期);第161-163页 *
百合花粉细胞中钙离子的荧光测定方法;尚忠林 等;《植物生理学通讯》;20010831;第37卷(第4期);第319-322页 *
青杆花粉管生长过程中囊泡运输与Ca2+分布的细胞学研究;李伶俐 等;《电子显微学报》;20100430;第29卷(第2期);第163-164页 *

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