Phytohormones: plant switchers in developmental and growth stages in potato

Main body of the abstract This review presents a description of hormonal basic pathways, various interconnections between hormonal network and reciprocal relationships, and clarification of molecular events underlying potato growth

Abbas Saidi; Zahra Hajibarat

2021

Scholarcy highlights

  • Transition from tuber dormancy to sprouting using hormone After harvesting, potato tubers are dormant and do not germinate after planting
  • Downregulation of OsARF1 leads to short leaves and growth retardation. These results suggested that OsARF1 has a vital role in vegetative organ and seed development
  • It is highlighted that several phytohormones are involved in the regulation of growth and development in potato
  • GA and CK are actively increased during tuber sprouting, root growth, and tuber development, while auxin and abscisic acid enhance tuber dormancy, shoot growth, and tuber initiation and development
  • The SL hormone interacts with other plant hormones either synergistically or antagonistically at tuber initiation and vegetative growth processes
  • A few potential candidates simplifying the interplay between auxin and GA and/or CK have been detected in the last several decades, but Abbreviations CK: Cytokinin; GA: Gibberellin; ABA: Abscisic acid; SL: Strigolactone; LOG: LONELY GUY; AUXIN RESPONSE FACTOR: Auxin responsive gene; Cyclindependent kinase: Cyclin dependent kinase; CKX: CK oxidase/dehydrogenase; ABCB: ATP-binding cassette transporters; MORE AXILLARY BRANCHED: MORE AXILLARY BRANCHING; BRC1: BRANCHED1; AXR: AUXIN RESISTANT; SPY: SPINDLY; AHP6: Arabidopsis HISTIDINE PHOSPHOTRANSFER PROTEIN 6; IPT: Isopentenyltransferase
  • We anticipate that future models on hormonal effects, individually and/or in combination, from tuber sprouting to tuber maturation provide a greater understanding of the intricate dynamics/mechanisms underlying the tightly synchronized biological processes

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