Improvement of plant drought stress tolerance and biomass productivity by nicotinic acid

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  • Ahmad Zarnab
    Fred Hutchinson Cancer Center, United States Plant Genomic Network Research Team, RIKEN Center for Sustainable Resource Science (CSRS), Japan
  • Khurram Bashir
    Syed Babar Ali School of Science and Engineering, Lahore University of Management Sciences (LUMS), Pakistan Plant Genomic Network Research Team, RIKEN Center for Sustainable Resource Science (CSRS), Japan
  • Todaka Daisuke
    Plant Genomic Network Research Team, RIKEN Center for Sustainable Resource Science (CSRS), Japan
  • Seki Motoaki
    Plant Genomic Network Research Team, RIKEN Center for Sustainable Resource Science (CSRS), Japan Plant Epigenome Regulation Laboratory, RIKEN Cluster for Pioneering Research, Japan Kihara Institute for Biological Research, Yokohama City University, Yokohama, Japan

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Other Title
  • ニコチン酸による植物の乾燥ストレス耐性とバイオマス生産性の向上
  • ニコチンサン ニ ヨル ショクブツ ノ カンソウ ストレス タイセイ ト バイオマス セイサンセイ ノ コウジョウ

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Abstract

<p>Drought stress mitigation and increasing plant productivity are two major goals for a sustainable future amidst growing populations and global climatic changes. Understanding inherent mechanisms adopted by plants to resist drought stress and to maintain optimal growth could act as fundamental tools which can be utilized for developing technologies for increasing the growth and survival potential of plants. Nicotinic acid (NA) participates in the nicotinamide adenine dinucleotide (NAD) biosynthesis and recycling pathways. Nicotinamidase 3 (NIC3), a root-specific and drought-responsive gene, generates NA from nicotinamide (NAM) during the NAD salvage pathway. Overexpressing NIC3 enhances plant survival ratio, increases plant growth, and accumulates NA as a metabolite. The exogenous application of NA mimics the effect of NIC3 overexpression. The fundamental biological potential of NA can be used to prime plants not only for better survival under drought stress conditions but also for increasing plant productivity.</p>

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