Physiological roles for aerenchyma in phosphorus-stressed roots

Functional Plant Biology : FPB
Mingshou FanJonathan P Lynch

Abstract

Low phosphorus availability induces the formation of cortical aerenchyma in roots. The adaptive significance of this response is unknown. We hypothesized that aerenchyma may be helpful to low-phosphorus plants by reducing root respiratory and phosphorus requirements, thereby increasing the metabolic efficiency of soil exploration. To test this hypothesis we investigated aerenchyma formation, root respiration and tissue phosphorus concentration in maize and common bean genotypes in response to phosphorus availability and ethylene treatments. Genotypes differed substantially in their ability to form aerenchyma in response to low phosphorus. Aerenchyma formation was disproportionately correlated with reduced root respiration; roots with 30% cross-sectional area as aerenchyma had 70% less respiration than roots without aerenchyma. Aerenchyma formation was also proportionally correlated with reduced root phosphorus concentration. Variation in aerenchyma formation was correlated with root respiration and phosphorus concentration, regardless of whether such variation was caused genetically or by ethylene or phosphorus treatments. Results with isolated roots were confirmed by measurement of whole root respiration of intact maize plants...Continue Reading

Citations

Jun 27, 2020·Annals of Botany·Christopher F Strock, Jonathan P Lynch
May 27, 2008·Journal of Experimental Botany·Carlos Calderon-VazquezLuis Herrera-Estrella
Jan 3, 2013·Proteomics·Ralitza Alexova, A Harvey Millar
Apr 27, 2013·Annals of Botany·Raúl E JaramilloJonathan P Lynch
Jan 9, 2017·Journal of Experimental Botany·Silvas J PrinceHenry T Nguyen
Feb 23, 2018·Journal of Experimental Botany·Jonathan P Lynch
Jun 14, 2018·Annals of Botany·Hannah M SchneiderJonathan P Lynch
Mar 20, 2019·Frontiers in Plant Science·Luis O Duque, Arthur Villordon
Jul 18, 2019·Plant, Cell & Environment·Tania Galindo-CastañedaJonathan P Lynch
Nov 1, 2004·Functional Plant Biology : FPB·Jinming Zhu, Jonathan P Lynch
Oct 28, 2006·Annual Review of Plant Biology·Daniel P Schachtman, Ryoung Shin
Sep 6, 2008·Plant, Cell & Environment·Hye-Ji KimKathleen M Brown
Jun 4, 2010·Plant, Cell & Environment·Jinming ZhuJonathan P Lynch
Mar 4, 2014·Annual Review of Plant Biology·Damar Lizbeth López-ArredondoLuis Herrera-Estrella
Mar 27, 2018·Plant, Cell & Environment·Tania Galindo-CastañedaJonathan P Lynch
Sep 1, 2005·Functional Plant Biology : FPB·Jinming ZhuJonathan P Lynch
Feb 1, 2007·Functional Plant Biology : FPB·Paramita BasuKathleen M Brown
Jun 20, 2006·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Jinming ZhuJonathan P Lynch
Oct 30, 2012·Plant Signaling & Behavior·Noushina IqbalNafees A Khan
Jan 15, 2015·Journal of Experimental Botany·Jonathan P Lynch, Tobias Wojciechowski
Oct 20, 2014·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Amy L BurtonKathleen M Brown
Apr 25, 2014·Journal of Experimental Botany·Jonathan P LynchKathleen M Brown
Apr 24, 2015·Journal of Experimental Botany·Joseph G ChimunguJonathan P Lynch
Jun 15, 2016·Rice·Phanchita VejchasarnKathleen M Brown
Mar 28, 2019·Nature Communications·Joseph SwiftGloria M Coruzzi
Jan 4, 2019·Journal of Experimental Botany·Eveline Q P TavaresMarcos S Buckeridge
Sep 1, 2005·Functional Plant Biology : FPB·Melissa D HoJonathan P Lynch
Nov 1, 2004·Functional Plant Biology : FPB·Hong LiaoJonathan P Lynch

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