CN109100335A - The method that a kind of pair of salmon trout embryo's living body carries out Ploidy Identification - Google Patents

The method that a kind of pair of salmon trout embryo's living body carries out Ploidy Identification Download PDF

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Publication number
CN109100335A
CN109100335A CN201810631986.0A CN201810631986A CN109100335A CN 109100335 A CN109100335 A CN 109100335A CN 201810631986 A CN201810631986 A CN 201810631986A CN 109100335 A CN109100335 A CN 109100335A
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embryo
sample
ploidy
salmon trout
living body
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CN201810631986.0A
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徐革锋
黄天晴
谷伟
王炳谦
张玉勇
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Heilongjiang River Fisheries Research Institute of Chinese Academy of Fishery Sciences
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Heilongjiang River Fisheries Research Institute of Chinese Academy of Fishery Sciences
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    • 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
    • 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
    • G01N1/286Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
    • 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

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

Abstract

The method that a kind of pair of salmon trout embryo's living body carries out Ploidy Identification, it is related to the method that a kind of couple of fish embryo carries out Ploidy Identification.The method of the present invention can shorten the Ploidy Identification period, avoid production loss caused by extraneous factor in breeding process.Identification method: one, 5~8 DEG C under the conditions of salmon trout eyespot phase embryo is individually temporarily put, and keeps embryo's air exchange not anoxic;Two, embryonic cell suspension is made;Three, it filters, obtains detection sample;Four, the known salmon trout diploid sample of dyeing is detected with the ploidy analyser, and adjusts fluorescence signal value to being set as check sample at 100;It is detected after will test sample dyeing with the ploidy analyser, records fluorescence signal value, the analysis system carried by machine will test the peak value figure mean value of sample compared with check sample peak value figure, determine the ploidy size of detection sample.

Description

The method that a kind of pair of salmon trout embryo's living body carries out Ploidy Identification
Technical field
The present invention relates to the methods that a kind of couple of fish embryo carries out Ploidy Identification.
Background technique
Fishes Chromosomes operating technology (gynogenesis and multiploid induction) plays important in aquatic livestock breeding field Effect.Currently, the research work in relation to multiploid induction makes much progress in the world.The seas such as salmon trout class, flounder flounder class, Tilapia mossambica, Triploid is induced in freshwater fish, in salmon fishes oneself obtain Atlantic salmon, rainbow trout (Salmo gairdneri), rainbow trout, hump back salmon, The autotriploids such as king salmon and America red dot.It is domestic in recent years also successfully to have induced triploid megalobrama amblycephala, water Brilliant coloured silk crucian carp, red porgy, black porgy, lefteye flounder and rainbow trout, especially in last century the eighties mid-term to the nineties initial stage, China Water obstetrics It learns research institute Heilungkiang aquatic products research institute and has just carried out rainbow trout female Cultivating techniques research entirely, and the beginning of this century completes three times of rainbow trout System kind technical research, tentatively realizes the large-scale production of triploid;Later, China Aquatic Science Research Institute Heilungkiang aquatic products Research institute has also carried out the research of triploid Oncorhychus masou and triploid golden trout seeding technique.
There are many kinds of related fish methods for ploidy determination, comprising: chromosome counting method, red blood cell and nucleus volume measurement Method, nucleolus organizer region's silver staining counting method, body cell DNA relative amount measuring method etc..Chromosome technique method needs to obtain Fish Cell mitogen division phases (karyotype), by matching to chromosome, hand picking goes out all homologous dyes Colour solid, and counted, and a kind of method for identifying the ploidy of fish is compared with reference genome, this method is current Generally acknowledged most accurate fish methods for ploidy determination, but due to there are mitosis metaphase split coil method be prepared into power it is low with it is same The artificial judgement of source chromosome pairing there are error probabilities high, level-one complex steps and it is professional too strong the features such as, be not suitable for carrying out It is not very practical especially to carry out the screening of high-volume polyploid in production practice for mass detection.Red blood cell and nucleus volume Mensuration and nucleolus organizer region's silver staining counting method measurement ploidy accuracy are lower, and after being not readily used for batch processing induction polyploid The Ploidy Identification in generation.
When development Fishes Chromosomes double experiment, need effectively to assess set experiment condition, such as press Power intensity, pressure effect time and after fertilization pressure intervention window phase etc.;And more times are being carried out for seed initiative enterprise Also ploidy verifying is carried out to the polyploid seed of preparation in body scale production of hybrid seeds production, require a set of stabilization, quickly and just Prompt methods for ploidy determination, especially in embryo stage.Because polyploid Seedling production enterprise will be while selling out seed A times implementations are known at the first time.Currently, being all equal production of hybrid seeds offspring to the assessment of fish gynogenesis and multiploid induction result It is developed to young stage and carries out Ploidy Identification again later, then assesses the superiority and inferiority that genome walking tests set parameter and condition. Thus there are some defects: (1) since gynogenesis and multiploid induction technology offspring obtained must wait until to enter juvenile fish Stage just can be carried out Ploidy Identification, and especially as salmon trout is long growth cycle, development to juvenile fish stage needs 6 months, this causes must Palpus etc. is lot more time to the result of assessment genome walking experiment;(2) before due to assessment ploidy operation experiments result, have longer One section of breeding process, in this process because caused by the reasons such as breeding environment variation, cultural technique and disease fish it is dead Be it is unpredictable, the offspring of genome walking experiment preparation does not have equal detections, and just all dead cases also can be found everywhere.
Summary of the invention
In order to shorten the Ploidy Identification period, production loss caused by extraneous factor in breeding process is avoided, the present invention Provide the method that a kind of pair of salmon trout embryo's living body carries out Ploidy Identification.
The method that the present invention carries out Ploidy Identification to salmon trout embryo's living body is as follows:
One, salmon trout eyespot phase embryo is individually temporarily put under the conditions of 5~8 DEG C, and keeps embryo's air exchange not anoxic;
Two, salmon trout eyespot phase embryo is pierced through with tip tweezers, releases the liquid fat in ovum, is pressed from both sides later with tweezers Live in embryo stirs in PBS buffer solution and washes excess oil, is subsequently placed in the nucleus dye liquor of culture dish, by ovum skin and work The chopping of body embryo tire shakes up embryonic cell suspension is made;
Three, it rinses culture dish with nucleus dye liquor to mix with step 2 embryonic cell suspension, then with 30 μm of aperture strainers Embryonic cell mixing suspension is filtered;It takes filtrate to be refiltered once with 30 μm of aperture strainers, obtains detection sample;
Four, the known salmon trout diploid sample of dyeing is detected with the ploidy analyser, and adjusts fluorescence signal value to 100 Place is set as check sample;It is detected after will test sample dyeing with the ploidy analyser, records fluorescence signal value, it is included by machine Analysis system, will test the peak value figure mean value of sample compared with check sample peak value figure, determine detection sample ploidy size.
The present invention carries out Ploidy detection and identification in embryo stage, can carry out without until offspring enters juvenile fish stage Detection cycle is greatly shortened in Ploidy Identification, knows ploidy in fertilized eggs period, can do the production of hybrid seeds of polyploid again in due course.For Aquaculture enterprise and research institution can carry out a large amount of and multiple batches of identifications in breeding period, due to the fish oosperm incubation period It is longer, therefore obtain qualification result in embryo stage, breeding period is carried out again the preparation of multiple polyploid be it is extremely beneficial and It is feasible.
The present invention is short to the pre-treatment, dyeing and detection time of test sample, easy to operate, quick, identification stability it is good, Accuracy rate is high, dyeing drug dosage is small, the micro- poison of operation toxicity, to body fanout free region, be suitble to the mass detection of industrialization production With identification, it is more conducive to polyploid breeding practice and polyploid large-scale production needs.The method of the present invention is universal for technology Stronger with promoting, without profession, upper machine personnel are assisted, independent training i.e. detection operation in 20 minutes.
Specific embodiment
The technical solution of the present invention is not limited to the following list, further includes between each specific embodiment Any combination.
Specific embodiment 1: the method that present embodiment carries out Ploidy Identification to salmon trout embryo's living body is as follows:
One, salmon trout eyespot phase embryo is individually temporarily put under the conditions of 5~8 DEG C, and keeps embryo's air exchange not anoxic;
Two, salmon trout eyespot phase embryo is pierced through with tip tweezers, releases the liquid fat in ovum, is pressed from both sides later with tweezers Live in embryo stirs in PBS buffer solution and washes excess oil, is subsequently placed in the nucleus dye liquor of culture dish, by ovum skin and work The chopping of body embryo tire shakes up embryonic cell suspension is made;
Three, it rinses culture dish with nucleus dye liquor to mix with step 2 embryonic cell suspension, then with 30 μm of aperture strainers Embryonic cell mixing suspension is filtered;It takes filtrate to be refiltered once with 30 μm of aperture strainers, obtains detection sample;
Four, the known salmon trout diploid sample of dyeing is detected with the ploidy analyser, and adjusts fluorescence signal value to 100 Place is set as check sample;It is detected after will test sample dyeing with the ploidy analyser, records fluorescence signal value, it is included by machine Analysis system, will test the peak value figure mean value of sample compared with check sample peak value figure, determine detection sample ploidy size;
Wherein, nucleus dye liquor is CyStain DNA1Step.
Present embodiment fixer non-volatility and inflammability long-term preservation or can be carried, be suitble in Experimental Base Laboratory is posted go back to after sampling or detection unit uses, mainly for no the ploidy analyser or the instrument not in sampling location Under the conditions of use.
The salmon trout embryo of 20 batches is fostered to adult fish, and carries out Ploidy Identification again in young stage, adult fish phase respectively. Salmon trout embryonic period, embryonic phase living body ploidy identification result accuracy rate 99.9% of the present invention.The present invention is by salmon trout Ploidy detection time advance To within 20 days, the period that more times of production of hybrid seeds conditions of salmon trout are groped and polyploid breeding is verified is substantially reduced, to accelerate salmon Trout genetic progress has established solid foundation.
Specific embodiment 2: the difference of present embodiment and specific embodiment one is: thin in step 2 culture dish Karyon dye liquor is 300ml, wherein 200 μ l nucleus dye liquors are placed in culture dish edge, remaining 100 μ l nucleus dye liquor is placed in training Ware center is supported, living body embryo is placed in central 100 μ l nucleus dye liquors, and chopping rear-inclined culture dish merges nucleus dye liquor Embryonic cell suspension is made.Present embodiment step 3 rinses culture dish with 400 μ l nucleus dye liquors.Other steps and parameter It is identical as embodiment one.
Present embodiment step 3 is all collected all embryonic tissues into embryonic cell suspension with nucleus dye liquor.
Present embodiment single sample coloring agent handles the time as 1min, and detection speed is 2/min, and single sample reagent disappears Consumption is only 700 μ l.
Specific embodiment 3: the difference of present embodiment and specific embodiment one or two is: detection sample is temporary Storage must be protected from light.Other steps and parameter are identical as embodiment one or two.

Claims (4)

1. the method that a kind of pair of salmon trout embryo's living body carries out Ploidy Identification, it is characterised in that this method sequentially includes the following steps:
One, salmon trout eyespot phase embryo is individually temporarily put under the conditions of 5~8 DEG C, and keeps embryo's air exchange not anoxic;
Two, salmon trout eyespot phase embryo is pierced through with tip tweezers, releases the liquid fat in ovum, clamps embryo with tweezers later Tire stirs in PBS buffer solution and washes excess oil, is subsequently placed in the nucleus dye liquor of culture dish, by ovum skin and living body embryo Tire chopping shakes up embryonic cell suspension is made;
Three, it rinses culture dish with nucleus dye liquor to mix with step 2 embryonic cell suspension, then with 30 μm of aperture strainers to embryo Fetus cells mixing suspension is filtered;It takes filtrate to be refiltered once with 30 μm of aperture strainers, obtains detection sample;
Four, the known salmon trout diploid sample of dyeing is detected with the ploidy analyser, and adjusts fluorescence signal value to setting at 100 It is set to check sample;It is detected after will test sample dyeing with the ploidy analyser, records fluorescence signal value, point carried by machine Analysis system will test the peak value figure mean value of sample compared with check sample peak value figure, determine the ploidy size of detection sample.
2. the method that a kind of pair of salmon trout embryo's living body according to claim 1 carries out Ploidy Identification, it is characterised in that step Nucleus dye liquor is 300ml in rapid two culture dish, wherein 200 μ l nucleus dye liquors are placed in culture dish edge, remaining 100 μ l is thin Karyon dye liquor is placed in culture dish center, and living body embryo is placed in central 100 μ l nucleus dye liquors, and chopping rear-inclined culture dish will Nucleus dye liquor combination system is at embryonic cell suspension.
3. the method that a kind of pair of salmon trout embryo's living body according to claim 1 carries out Ploidy Identification, it is characterised in that inspection Originally temporarily storage must be protected from light test sample.
4. the method that a kind of pair of salmon trout embryo's living body according to claim 1 carries out Ploidy Identification, it is characterised in that thin Karyon dye liquor is 1 Step of CyStain DNA.
CN201810631986.0A 2018-06-19 2018-06-19 The method that a kind of pair of salmon trout embryo's living body carries out Ploidy Identification Pending CN109100335A (en)

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Citations (4)

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CN204560633U (en) * 2015-04-30 2015-08-19 中国水产科学研究院黑龙江水产研究所 A kind of Experimental fish class embryonic development culture apparatus
CN106259132A (en) * 2016-10-17 2017-01-04 大连海洋大学 A kind of method obtaining red fin east Androgenesis haploid
CN106376501A (en) * 2016-10-24 2017-02-08 大连海洋大学 Method for producing loach tetraploid
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CN106259132A (en) * 2016-10-17 2017-01-04 大连海洋大学 A kind of method obtaining red fin east Androgenesis haploid
CN106376501A (en) * 2016-10-24 2017-02-08 大连海洋大学 Method for producing loach tetraploid
CN106957888A (en) * 2017-04-11 2017-07-18 武汉百科金典生物科技有限公司 A kind of method based on the ploidy analyser Rapid identification prelarva ploidy

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