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Development of SCAR and CAPS Markers Linked to the Beta Gene in Tomato

Development of SCAR and CAPS Markers Linked to the Beta Gene in Tomato

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Development of SCAR and CAPS Markers Linked to the Beta Gene in Tomato

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指導老師:王裕文 老師報告學生:楊雯惠報告時間: 3月 21 日上午 10 點 35 分報告地點:農藝館 112

作者: Yiping Zhang and John R. Stommel

出處: Crop Science 41 (2001) 1602–1608

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β - carotene

Phenotypic selection

Marker-assisted selection

• Provitamin A carotenoid

• Essential nutrient

• Antioxidant

• Reduced risk of heart disease and certain cancers

Beta gene

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Marker-assisted selectionRAPD

• Simple

• Rapid

• Inexpensive

• Radioactive isotopes

• Analyzing large numbers of samples

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1100bp

830bp

High Low

TAG(2000) 100:368-375

MPOPRBOBR

OPAR18

UBC792

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Marker-assisted selectionRAPD

• Poor reproducibility

• Multiple amplification products

• Dominant marker

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sequence characterized amplified region,

SCAR

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SCBC792682

Mismatch

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How to solve ?

Modification of PCR parameter

Restriction enzyme digestion

Primer redesign

• increasing annealing temperature

• increasing Mg++ concentrations

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Cleaved amplified polymorphic sequence,

CAPS

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bb

BB

bb

BB

bb

BB

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HinfⅠ

RsaⅠ

SCAR18

SCBC792

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Codominant Marker

Dominant Marker

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Discussion

Specific

Stable

Reproduced

Dominant or codominant Marker

SCAR

Advantage of RAPD

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謝謝大家!