loading page

ANAC044 modulates P reutilization in P deficient Arabidopsis thaliana root cell wall in an ethylene dependent manner
  • +2
  • Qi Wu,
  • ye Tao,
  • xiaolong Zhang,
  • Xiao Fang Zhu,
  • Ren Fang Shen
Qi Wu
State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences

Corresponding Author:1621632569@qq.com

Author Profile
ye Tao
State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences
Author Profile
xiaolong Zhang
State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences
Author Profile
Xiao Fang Zhu
State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences
Author Profile
Ren Fang Shen
State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences
Author Profile

Abstract

Phosphorus (P) deficiency is a major problem in agriculture, thus identifying factors 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 report the involvement of a NAC (No apical meristem [NAM], Arabidopsis transcription activation factor [ATAF] and Cup-shaped cotyledon [CUC]) transcription factor in P deficiency resistance in Arabidopsis. Compared to the wild type (WT, Col-0) plants, the anac044 mutant displayed P deficiency resistant phenotype, together with the increasing root length, root and shoot biomass under P deficiency. ANAC044 was frequently expressed, including roots and shoots. 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, accompanied by an increment of ethylene production, as a result, more soluble P was available in anac044 root and shoot. Thus, the study here uncovers the role of ANAC044 in maintenance of P homeostasis through ethylene signaling.
06 Jul 2020Submitted to Plant, Cell & Environment
07 Jul 2020Submission Checks Completed
07 Jul 2020Assigned to Editor