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New insights into nutrient- and drought-responsive flowering.

Miho Sanagi1,2, Filip Rolland3, Takeo Sato1

  • 1Faculty of Science and Graduate School of Life Science, Hokkaido University, Kita-ku N10-W8, Sapporo 060-0810, Japan.

Journal of Experimental Botany
|April 1, 2025
PubMed
Summary
This summary is machine-generated.

Plant nutrients like nitrogen, phosphorus, and potassium regulate flowering time, crucial for crop yield. The SNF1-RELATED KINASE 1 (SnRK1) pathway integrates nutrient signals to control this vital developmental transition.

Keywords:
DroughtSnRK1floweringmetabolismnutrientpost-translational modificationsignal transductionsugar

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Area of Science:

  • Plant Physiology
  • Nutrient Signaling
  • Developmental Biology

Background:

  • Nutrients are vital for plant growth, development, and regulating molecular functions.
  • Flowering, a critical transition to reproductive growth, directly impacts crop yield and fitness.
  • Precise flowering requires integrating metabolic status, nutrient availability, and developmental signals.

Purpose of the Study:

  • To review recent advancements in understanding how nutrients regulate plant flowering.
  • To focus on the roles of sugars, nitrogen, phosphorus, and potassium in flowering control.
  • To highlight the integration of nutrient status by SNF1-RELATED KINASE 1 (SnRK1).

Main Methods:

  • Literature review of recent research on nutrient-regulated flowering.
  • Focus on studies investigating sugars, nitrogen, phosphorus, and potassium.
  • Consideration of drought stress effects on nutrient availability and flowering.

Main Results:

  • Nutrients, particularly sugars, nitrogen, phosphorus, and potassium, are key regulators of flowering time.
  • The conserved SNF1-RELATED KINASE 1 (SnRK1) kinase acts as a central integrator of nutrient status.
  • Drought stress significantly impacts nutrient availability and influences flowering responses.

Conclusions:

  • Nutrient availability is a critical determinant of flowering time, impacting plant reproductive success.
  • SnRK1 is a pivotal signaling hub connecting nutrient status to the control of flowering.
  • Further research is needed to explore combined nutrient effects and inter-species variations in flowering regulation.