Polyamines as biomarkers for plant regeneration capacity: improvement of regeneration by modulation of polyamine metabolism in different genotypes of indica rice

Plant Science : an International Journal of Experimental Plant Biology
F ShoebM V. Rajam

Abstract

The importance of cellular polyamine (PA) levels and the ratio of putrescine (Put) to spermidine (Spd) for plant regeneration ability via somatic embryogenesis in several commercially grown indica rice varieties is reported here. The genotypes namely NDR-624, IR-20, IR-36, BJ-1 (having Put:Spd ratio approximately 2.3) showed superior plant regeneration while KL, PB-1 and TN-1 (having Put:Spd ratio approximately 3.8) showed moderate plant regeneration ability. The genotypes namely HS, Bindli, DV-85, ACB-72, IR-64 and IR-72 (having Put:Spd ratio approximately 5.0) showed poor plant regeneration ability. In contrast KH-7 (Put:Spd ratio approximately 10.0) showed no response at all. Favorable modification of cellular PA titers and their Put:Spd ratio by the addition of exogenous PAs (Put, Spd) or their biosynthesis inhibitor, difluoromethylarginine (DFMA) led to the induction/promotion of plant regeneration in poorly responding genotypes. These results showed a close relationship between cellular PA levels and their Put:Spd ratio with in vitro morphogenetic capacity in indica rice and suggest that the cellular PAs and Put:Spd ratios are important determinants (biomarkers) of plant regeneration ability in indica rice, and the improv...Continue Reading

References

Apr 1, 1986·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·T Abe, Y Futsuhara

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Citations

Jan 30, 2008·Molecular Biotechnology·Clelia De-la-PeñaVíctor M Loyola-Vargas
Nov 30, 2006·Plant Biotechnology Journal·Shavindra Bajaj, Amitabh Mohanty
Jul 2, 2010·Plant Signaling & Behavior·Sarvajeet Singh Gill, Narendra Tuteja
Jan 18, 2006·Plant & Cell Physiology·Ni Ni TunGünther F E Scherer
Feb 8, 2020·Journal of the Science of Food and Agriculture·Dragana BartolićKsenija Radotić
Apr 16, 2019·Frontiers in Plant Science·Maria Salomé Pais

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