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High-throughput cell analysis based protocol for ploidy determination in anther-derived rice callus

  • Sripati Abhiram Sahoo
  • Zenu Jha
  • Satish B. Verulkar
  • Ashish K. Srivastava
  • Penna SuprasannaEmail author
Research Note

Abstract

Key message

The study provides high-throughput protocol for ploidy determination which may accelerate the production of double haploids in rice.

Abstract

Advancements in anther-culture technique have accelerated the production of completely homozygous breeding lines in a shortened time frame. However, the success is dependent upon several factors including precise and accurate determination of ploidy status at callus stage. In the present study, we describe a protocol for nuclei isolation and performed DNA content based ploidy analysis in anther-derived rice callus. Tris-MgCl2 buffer (200 mM Tris, 4 mM MgCl2·6H2O, 0.5% (vol/vol) Triton X-100, adjusted pH to 7.5 with 1 N HCl) was used for isolating high-density nuclei suspension. The nuclei were stained with propidium iodide and fluorescence image was captured using Cellista-Acumen Software in high throughput cell analyser (HTCA). The region of interest was defined on stored image and DNA content was calculated on the basis of fluorescence intensity as well as volume. The protocol was validated using anther callus from different indica rice varieties. Thus, the adoption of high-throughput protocol for ploidy determination will accelerate the development of successful double haploids in rice.

Keywords

Anther callus Diploidization Flow cytometry Ploidy determination 

Notes

Acknowledgements

Authors thank Mr. P. Radha Krishna for technical help in photography.

Author contributions

PS and ZJ conceived the idea, PS and AKS designed the experiment, SSA conducted the experiments and wrote manuscript with input/corrections from AKS and PS. PS, ZJ and SV coordinated the entire study.

Compliance with ethical standards

Conflict of interest

The authors declare no conflict of interest.

Supplementary material

11240_2019_1561_MOESM1_ESM.docx (21 kb)
Supplementary material 1 (DOCX 21 KB)
11240_2019_1561_MOESM2_ESM.docx (1.1 mb)
Supplementary material 2 (DOCX 1160 KB)

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Copyright information

© Springer Nature B.V. 2019

Authors and Affiliations

  • Sripati Abhiram Sahoo
    • 1
    • 2
  • Zenu Jha
    • 1
  • Satish B. Verulkar
    • 1
  • Ashish K. Srivastava
    • 2
    • 3
  • Penna Suprasanna
    • 2
    • 3
    Email author
  1. 1.Department of Plant Molecular Biology and BiotechnologyIGKVRaipurIndia
  2. 2.Nuclear Agriculture and Biotechnology DivisionBhabha Atomic Research CentreMumbaiIndia
  3. 3.Homi Bhabha National InstituteMumbaiIndia

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