Rightsizing root phenotypes for drought resistance

Journal of Experimental Botany
Jonathan P Lynch

Abstract

I propose that reduced root development would be advantageous for drought resistance in high-input agroecosystems. Selection regimes for crop ancestors and landraces include multiple stresses, intense competition, and variable resource distribution, which favored prolific root production, developmental plasticity in response to resource availability, and maintenance of unspecialized root tissues. High-input agroecosystems have removed many of these constraints to root function. Therefore, root phenotypes that focus on water capture at the expense of ancestral adaptations would be better suited to high-input agroecosystems. Parsimonious architectural phenotypes include fewer axial roots, reduced density of lateral roots, reduced growth responsiveness to local resource availability, and greater loss of roots that do not contribute to water capture. Parsimonious anatomical phenotypes include a reduced number of cortical cell files, greater loss of cortical parenchyma to aerenchyma and senescence, and larger cortical cell size. Parsimonious root phenotypes may be less useful in low-input agroecosystems, which are characterized by multiple challenges and trade-offs for root function in addition to water capture. Analysis of the fitn...Continue Reading

References

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Jul 2, 2017·Plant Physiology·Hannah M SchneiderJonathan P Lynch
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Mar 27, 2018·Plant, Cell & Environment·Tania Galindo-CastañedaJonathan P Lynch
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Citations

Nov 18, 2018·Journal of Experimental Botany·Marta Del Bianco, Stefan Kepinski
Jun 25, 2019·Journal of Experimental Botany·Jennifer T YangJonathan P Lynch
Jul 25, 2019·Plants·Mathieu GoninAntony Champion
Aug 7, 2019·Annual Review of Cell and Developmental Biology·José R Dinneny
Feb 23, 2020·Journal of Experimental Botany·Hannah M SchneiderJonathan P Lynch
Feb 13, 2020·The New Phytologist·Kelly ChapmanMichael A Djordjevic
Jun 27, 2020·Annals of Botany·Christopher F Strock, Jonathan P Lynch
Jun 8, 2018·Journal of Experimental Botany·Rajeev K VarshneyFrancois Tardieu
Jan 1, 2018·Plant and Soil·Ellen L FryRichard D Bardgett
Jul 16, 2020·Journal of Experimental Botany·Frederik J T van der BomMichael J Bell
Jul 25, 2019·Plants·Hillel Fromm
Jun 6, 2020·Frontiers in Plant Science·Hannah M Schneider, Jonathan P Lynch
Dec 5, 2018·Rice·Mohamed Hazman, Kathleen M Brown
Oct 6, 2020·The Plant Genome·Hannah M SchneiderJonathan P Lynch
May 19, 2020·Journal of Experimental Botany·Dorien J VanheesJonathan P Lynch
Nov 23, 2020·The New Phytologist·Takaki YamauchiNobuhiro Tsutsumi
Jan 13, 2021·Physiologia Plantarum·Kirti BardhanMansi N Pandya
Feb 2, 2020·Plant Science : an International Journal of Experimental Plant Biology·Jian GuoTianyu Wang
Feb 5, 2021·Proceedings of the National Academy of Sciences of the United States of America·Hannah M SchneiderJonathan P Lynch
Dec 31, 2020·Plants·Rosa VescioAgostino Sorgonà
Apr 12, 2021·The Journal of Biological Chemistry·Jordan M Chapman, Gloria K Muday
Jul 20, 2019·Trends in Plant Science·Bertrand MullerXavier Draye
Sep 26, 2021·Journal of Plant Research·Mohamed Y Hazman, Farida F Kabil
Nov 2, 2021·The Plant Journal : for Cell and Molecular Biology·Jonathan P Lynch
Nov 3, 2021·Plant, Cell & Environment·Jonathan P LynchHannah M Schneider

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