ANAC044 is associated with P reutilization in P deficient Arabidopsis thaliana root cell wall in an ethylene dependent manner

Xiao Long Zhang, Qi Wu, Ye Tao, Xiao Fang Zhu, Naoki Takahashi, Masaaki Umeda, Ren Fang Shen, Jian Feng Ma

Research output: Contribution to journalArticlepeer-review

Abstract

Phosphorus (P) deficiency is a major problem in agriculture, thus identifying mechanisms affecting plant's ability to reutilize previously assimilated P is a prerequisite for improving the P homeostasis in crops grown with P deficient soil. Here, we reported the involvement of a NAC (No apical meristem [NAM], Arabidopsis transcription activation factor [ATAF] and Cup-shaped cotyledon [CUC]) transcription factor in response to P deficiency. Compared to the wild type (WT, Col-0) and two independent complementary lines, the anac044 mutant displayed P deficiency resistant phenotype, together with the increased root length, root and shoot biomass under P deficiency. In addition, ANAC044 was highly expressed in root and silique. Upon P deficient treatment even within 1 d, ANAC044 transcript accumulation was strongly up-regulated. Further analysis revealed that, under P-deficient condition, the cell wall, particularly the pectin of anac044, released more P than that of WT and complementary lines, accompanied by an increment of ethylene production, as a result, more soluble and total P were available in anac044 root and shoot. Thus, the study here uncovers the role of ANAC044-regulated cell wall P remobilization through ethylene signaling under P deficiency.

Original languageEnglish
Article number104386
JournalEnvironmental and Experimental Botany
Volume185
DOIs
Publication statusPublished - May 2021
Externally publishedYes

Keywords

  • ANAC044
  • Cell wall
  • Ethylene
  • P deficiency
  • Remobilization

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Agronomy and Crop Science
  • Plant Science

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