Increase in root branching enhanced ferric-chelate reductase activity under iron stress in potato (Solanum tuberosum)


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Authors

  • CLARISSA CHALLAM Regional Station, ICAR-Central Potato Research Institute, Shillong, Meghalaya, India
  • SOM DUTT Regional Station, ICAR-Central Potato Research Institute, Shillong, Meghalaya, India
  • DURAIALAGARAJA SUDHAKAR Centre for Plant Biotechnology and Molecular Biology, Tamil Nadu Agricultural University, Coimbatore, Tamil Nadu
  • MUTHURAJAN RAVEENDRAN Centre for Plant Biotechnology and Molecular Biology, Tamil Nadu Agricultural University, Coimbatore, Tamil Nadu
  • TANUJA BUCKSETH Regional Station, ICAR-Central Potato Research Institute, Shillong, Meghalaya, India
  • RAJESH KUMAR SINGH Regional Station, ICAR-Central Potato Research Institute, Shillong, Meghalaya, India

https://doi.org/10.56093/ijas.v91i11.118577

Keywords:

Fe-deficiency, Ferric-chelate reductase, Lateral root, Potato

Abstract

In response to Fe-deficiency, various dicots increase their root branching to improve ferric-chelate reductase activity. It still remains unclear, whether the response caused by Fe-deficiency ultimately improves the plant's ability to withstand Fe-deficiency. In this experiment conducted at ICAR-Central Potato Research Institute, Regional Station, Shillong during 2020, we demonstrated a substantial increase in the growth of the lateral root of potato genotype (CP 3443), when grown in the iron-stress, in relation to control plants, and the total lateral root number is well linked to ferric-chelate reductase (FCR) activity. These findings showed that FCR is involved in root Fe uptake in potato (Solanum tuberosum L.) and they suggest a role in Fe distribution throughout the plant. In view of these findings, the Fe-deficiency induced increases in the lateral roots suggested that these play a significant role in Fe-deficiency tolerance in potato, which can serve as useful trait for the identification of chlorosis tolerance and/or nutrient-deficiency stress.

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References

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Submitted

2021-12-02

Published

2021-12-02

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How to Cite

CHALLAM, C., DUTT, S., SUDHAKAR, D., RAVEENDRAN, M., BUCKSETH, T., & SINGH, R. K. (2021). Increase in root branching enhanced ferric-chelate reductase activity under iron stress in potato (Solanum tuberosum). The Indian Journal of Agricultural Sciences, 91(11), 1646–1649. https://doi.org/10.56093/ijas.v91i11.118577
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