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Specification of female germline by microRNA orchestrated auxin signaling in Arabidopsis
Year:
2022
Source of publication :
Nature Communications
Authors :
ארזי, צחי
;
.
Volume :
Co-Authors:
  • Jian Huang, 
  • Lei Zhao, 
  • Shikha Malik, 
  • Benjamin R. Gentile, 
  • Va Xiong, 
  • Tzahi Arazi, 
  • Heather A. Owen, 
  • Jiří Friml 
  • Dazhong Zhao 
Facilitators :
From page:
0
To page:
0
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Total pages:
1
)
Abstract:

Germline determination is essential for species survival and evolution in multicellular organisms. In most flowering plants, formation of the female germline is initiated with specification of one megaspore mother cell (MMC) in each ovule; however, the molecular mechanism underlying this key event remains unclear. Here we report that spatially restricted auxin signaling promotes MMC fate in Arabidopsis. Our results show that the microRNA160 (miR160) targeted gene ARF17 (AUXIN RESPONSE FACTOR17) is required for promoting MMC specification by genetically interacting with the SPL/NZZ (SPOROCYTELESS/NOZZLE) gene. Alterations of auxin signaling cause formation of supernumerary MMCs in an ARF17- and SPL/NZZ-dependent manner. Furthermore, miR160 and ARF17 are indispensable for attaining a normal auxin maximum at the ovule apex via modulating the expression domain of PIN1 (PIN-FORMED1) auxin transporter. Our findings elucidate the mechanism by which auxin signaling promotes the acquisition of female germline cell fate in plants.

Note:
Related Files :
Auxin
cell fate
plant reproduction
עוד תגיות
תוכן קשור
More details
DOI :
10.1038/s41467-022-34723-6
Article number:
0
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
62540
Last updated date:
27/11/2022 17:06
Creation date:
27/11/2022 17:06
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Scientific Publication
Specification of female germline by microRNA orchestrated auxin signaling in Arabidopsis
  • Jian Huang, 
  • Lei Zhao, 
  • Shikha Malik, 
  • Benjamin R. Gentile, 
  • Va Xiong, 
  • Tzahi Arazi, 
  • Heather A. Owen, 
  • Jiří Friml 
  • Dazhong Zhao 
Specification of female germline by microRNA orchestrated auxin signaling in Arabidopsis

Germline determination is essential for species survival and evolution in multicellular organisms. In most flowering plants, formation of the female germline is initiated with specification of one megaspore mother cell (MMC) in each ovule; however, the molecular mechanism underlying this key event remains unclear. Here we report that spatially restricted auxin signaling promotes MMC fate in Arabidopsis. Our results show that the microRNA160 (miR160) targeted gene ARF17 (AUXIN RESPONSE FACTOR17) is required for promoting MMC specification by genetically interacting with the SPL/NZZ (SPOROCYTELESS/NOZZLE) gene. Alterations of auxin signaling cause formation of supernumerary MMCs in an ARF17- and SPL/NZZ-dependent manner. Furthermore, miR160 and ARF17 are indispensable for attaining a normal auxin maximum at the ovule apex via modulating the expression domain of PIN1 (PIN-FORMED1) auxin transporter. Our findings elucidate the mechanism by which auxin signaling promotes the acquisition of female germline cell fate in plants.

Scientific Publication
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