Plant Cell EnvironJClub
Comparative Tiller-Bud Transcriptomics Analyses Reveal OsNAC4-Associated Regulation of Salt Tolerance and Tillering in Rice.
Plant, Cell & Environment · · Comparative Study
Sun, Xia + more
Abstract ↗AI summary
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OsNAC4 is identified as a central regulatory hub in rice tiller-bud transcriptomes, and Osnac4 loss-of-function mutants show enhanced salt tolerance and increased tiller number.
- Why it matters: Salt stress inhibits tillering, limiting rice architecture and yield, but the molecular links between salt tolerance and tiller development remain unclear.
- What they did: Nipponbare (NIP) and Kongyu 131 (KY131) tiller buds were compared under salt stress using time-resolved RNA sequencing, co-expression, functional enrichment, and Osnac4 loss-of-function analyses.
- The result: OsNAC4 negatively regulates salt tolerance and tillering; mutants show reduced ROS accumulation and membrane damage, increased antioxidant enzyme activities, and higher tiller number, with OsNCED5 implicated in salt-induced ABA accumulation.
The findingWhy it mattersWhat they didThe result
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