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Coordinated regulation of photosynthesis in rice increases yield and tolerance to environmental stress

Author

Listed:
  • Madana M. R. Ambavaram

    (Virginia Bioinformatics Institute, Virginia Tech
    Present Address: Metabolix Inc., 21 Erie Street, Cambridge, Massachusetts 02139, USA)

  • Supratim Basu

    (Soil, and Environmental Sciences, University of Arkansas)

  • Arjun Krishnan

    (Virginia Bioinformatics Institute, Virginia Tech
    Present Address: Lewis-Sigler Institute for Integrative Genomics, Princeton University, Princeton, New Jersey 08544, USA)

  • Venkategowda Ramegowda

    (Soil, and Environmental Sciences, University of Arkansas)

  • Utlwang Batlang

    (Virginia Bioinformatics Institute, Virginia Tech
    Present Address: Department of Crop Science, Botswana College of Agriculture, Gaborone, Botswana)

  • Lutfor Rahman

    (Soil, and Environmental Sciences, University of Arkansas)

  • Niranjan Baisakh

    (School of Plant, Environmental, and Soil Sciences, Louisiana State University Agricultural Center)

  • Andy Pereira

    (Virginia Bioinformatics Institute, Virginia Tech
    Soil, and Environmental Sciences, University of Arkansas)

Abstract

Plants capture solar energy and atmospheric carbon dioxide (CO2) through photosynthesis, which is the primary component of crop yield, and needs to be increased considerably to meet the growing global demand for food. Environmental stresses, which are increasing with climate change, adversely affect photosynthetic carbon metabolism (PCM) and limit yield of cereals such as rice (Oryza sativa) that feeds half the world. To study the regulation of photosynthesis, we developed a rice gene regulatory network and identified a transcription factor HYR (HIGHER YIELD RICE) associated with PCM, which on expression in rice enhances photosynthesis under multiple environmental conditions, determining a morpho-physiological programme leading to higher grain yield under normal, drought and high-temperature stress conditions. We show HYR is a master regulator, directly activating photosynthesis genes, cascades of transcription factors and other downstream genes involved in PCM and yield stability under drought and high-temperature environmental stress conditions.

Suggested Citation

  • Madana M. R. Ambavaram & Supratim Basu & Arjun Krishnan & Venkategowda Ramegowda & Utlwang Batlang & Lutfor Rahman & Niranjan Baisakh & Andy Pereira, 2014. "Coordinated regulation of photosynthesis in rice increases yield and tolerance to environmental stress," Nature Communications, Nature, vol. 5(1), pages 1-14, December.
    • Handle: RePEc:nat:natcom:v:5:y:2014:i:1:d:10.1038_ncomms6302
    DOI: 10.1038/ncomms6302
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    Cited by:

    1. Leonard Bonilha Piveta & Nilda Roma-Burgos & José Alberto Noldin & Vívian Ebeling Viana & Claudia de Oliveira & Fabiane Pinto Lamego & Luis Antonio de Avila, 2020. "Molecular and Physiological Responses of Rice and Weedy Rice to Heat and Drought Stress," Agriculture, MDPI, vol. 11(1), pages 1-21, December.
    2. Zhu, Rui & Hu, Tiesong & Wu, Fengyan & Liu, Yong & Zhou, Shan & Wang, Yanxuan, 2023. "Photosynthetic and hydraulic changes caused by water deficit and flooding stress increase rice’s intrinsic water-use efficiency," Agricultural Water Management, Elsevier, vol. 289(C).

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