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Drought affects the rate and duration of organ growth but not inter-organ growth coordination

Lennart Verbraeken (UGent) , Nathalie Wuyts (UGent) , Stien Mertens (UGent) , Bernard Cannoot (UGent) , Katrien Maleux (UGent) , Kirin Demuynck (UGent) , Jolien De Block (UGent) , Julie Merchie (UGent) , Stijn Dhondt (UGent) , Gustavo Bonaventure, et al.
(2021) PLANT PHYSIOLOGY. 186(2). p.1336-1353
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Abstract
Drought at flowering and grain filling greatly reduces maize (Zea mays) yield. Climate change is causing earlier and longer-lasting periods of drought, which affect the growth of multiple maize organs throughout development. To study how long periods of water deficit impact the dynamic nature of growth, and to determine how these relate to reproductive drought, we employed a high-throughput phenotyping platform featuring precise irrigation, imaging systems, and image-based biomass estimations. Prolonged drought resulted in a reduction of growth rate of individual organs-though an extension of growth duration partially compensated for this-culminating in lower biomass and delayed flowering. However, long periods of drought did not affect the highly organized succession of maximal growth rates of the distinct organs, i.e. leaves, stems, and ears. Two drought treatments negatively affected distinct seed yield components: Prolonged drought mainly reduced the number of spikelets, and drought during the reproductive period increased the anthesis-silking interval. The identification of these divergent biomass and yield components, which were affected by the shift in duration and intensity of drought, will facilitate trait-specific breeding toward future climate-resilient crops. When affected by drought, the plant responds by adjusting the growth of individual organs but not the coordination between the organs.
Keywords
Plant Science, Genetics, Physiology, MAIZE LEAF GROWTH, CELL EXPANSION, WATER-STRESS, PHOTOSYNTHESIS, PLANTS, LIMITATIONS, EFFICIENCY, RECOVERY, YIELD

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Citation

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MLA
Verbraeken, Lennart, et al. “Drought Affects the Rate and Duration of Organ Growth but Not Inter-Organ Growth Coordination.” PLANT PHYSIOLOGY, vol. 186, no. 2, 2021, pp. 1336–53, doi:10.1093/plphys/kiab155.
APA
Verbraeken, L., Wuyts, N., Mertens, S., Cannoot, B., Maleux, K., Demuynck, K., … Nelissen, H. (2021). Drought affects the rate and duration of organ growth but not inter-organ growth coordination. PLANT PHYSIOLOGY, 186(2), 1336–1353. https://doi.org/10.1093/plphys/kiab155
Chicago author-date
Verbraeken, Lennart, Nathalie Wuyts, Stien Mertens, Bernard Cannoot, Katrien Maleux, Kirin Demuynck, Jolien De Block, et al. 2021. “Drought Affects the Rate and Duration of Organ Growth but Not Inter-Organ Growth Coordination.” PLANT PHYSIOLOGY 186 (2): 1336–53. https://doi.org/10.1093/plphys/kiab155.
Chicago author-date (all authors)
Verbraeken, Lennart, Nathalie Wuyts, Stien Mertens, Bernard Cannoot, Katrien Maleux, Kirin Demuynck, Jolien De Block, Julie Merchie, Stijn Dhondt, Gustavo Bonaventure, Steven Crafts-Brandner, Jonathan Vogel, Wesley Bruce, Dirk Inzé, Steven Maere, and Hilde Nelissen. 2021. “Drought Affects the Rate and Duration of Organ Growth but Not Inter-Organ Growth Coordination.” PLANT PHYSIOLOGY 186 (2): 1336–1353. doi:10.1093/plphys/kiab155.
Vancouver
1.
Verbraeken L, Wuyts N, Mertens S, Cannoot B, Maleux K, Demuynck K, et al. Drought affects the rate and duration of organ growth but not inter-organ growth coordination. PLANT PHYSIOLOGY. 2021;186(2):1336–53.
IEEE
[1]
L. Verbraeken et al., “Drought affects the rate and duration of organ growth but not inter-organ growth coordination,” PLANT PHYSIOLOGY, vol. 186, no. 2, pp. 1336–1353, 2021.
@article{8711464,
  abstract     = {{Drought at flowering and grain filling greatly reduces maize (Zea mays) yield. Climate change is causing earlier and longer-lasting periods of drought, which affect the growth of multiple maize organs throughout development. To study how long periods of water deficit impact the dynamic nature of growth, and to determine how these relate to reproductive drought, we employed a high-throughput phenotyping platform featuring precise irrigation, imaging systems, and image-based biomass estimations. Prolonged drought resulted in a reduction of growth rate of individual organs-though an extension of growth duration partially compensated for this-culminating in lower biomass and delayed flowering. However, long periods of drought did not affect the highly organized succession of maximal growth rates of the distinct organs, i.e. leaves, stems, and ears. Two drought treatments negatively affected distinct seed yield components: Prolonged drought mainly reduced the number of spikelets, and drought during the reproductive period increased the anthesis-silking interval. The identification of these divergent biomass and yield components, which were affected by the shift in duration and intensity of drought, will facilitate trait-specific breeding toward future climate-resilient crops.

When affected by drought, the plant responds by adjusting the growth of individual organs but not the coordination between the organs.}},
  author       = {{Verbraeken, Lennart and Wuyts, Nathalie and Mertens, Stien and Cannoot, Bernard and Maleux, Katrien and Demuynck, Kirin and De Block, Jolien and Merchie, Julie and Dhondt, Stijn and Bonaventure, Gustavo and Crafts-Brandner, Steven and Vogel, Jonathan and Bruce, Wesley and Inzé, Dirk and Maere, Steven and Nelissen, Hilde}},
  issn         = {{0032-0889}},
  journal      = {{PLANT PHYSIOLOGY}},
  keywords     = {{Plant Science,Genetics,Physiology,MAIZE LEAF GROWTH,CELL EXPANSION,WATER-STRESS,PHOTOSYNTHESIS,PLANTS,LIMITATIONS,EFFICIENCY,RECOVERY,YIELD}},
  language     = {{eng}},
  number       = {{2}},
  pages        = {{1336--1353}},
  title        = {{Drought affects the rate and duration of organ growth but not inter-organ growth coordination}},
  url          = {{http://dx.doi.org/10.1093/plphys/kiab155}},
  volume       = {{186}},
  year         = {{2021}},
}

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