Natural developmental variations in leaf and plant senescence in Arabidopsis thaliana

Plant Biology
Salma BalazadehR C Meyer

Abstract

Leaf senescence is a developmentally regulated process that contributes to nutrient redistribution during reproductive growth and finally leads to tissue death. Manipulating leaf senescence through breeding or genetic engineering may help to improve important agronomic traits, such as crop yield and the storage life of harvested organs. Here, we studied natural variations in the regulation of plant senescence among 16 Arabidopsis thaliana accessions. Chlorophyll content and the proportion of yellow leaves were used as indicator parameters to determine leaf and plant senescence respectively. Our study indicated significant genotype effects on the onset and development of senescence. We selected three late- and five early-senescence accessions for further physiological studies. The relationship between leaf and plant senescence was accession-dependent. There was a significant correlation between plant senescence and the total number of leaves, siliques and plant bolting age. We monitored expression of two senescence marker genes, SAG12 and WRKY53, to evaluate progression of senescence. Our data revealed that chlorophyll content does not fully reflect leaf age, because even fully green leaves had already commenced senescence at th...Continue Reading

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Citations

Nov 2, 2013·Planta·Waseem Shahri, Inayatullah Tahir
Sep 20, 2008·Plant Biology·K Krupinska, K Humbeck
Jul 16, 2013·The Journal of Ecology·Roberto Salguero-GómezMichael J Hutchings
Oct 15, 2013·The New Phytologist·Marnin D Wolfe, Stephen J Tonsor
Feb 26, 2015·Plant Science : an International Journal of Experimental Plant Biology·Fabian Koeslin-FindekleeWalter J Horst
Jun 22, 2016·Journal of Experimental Botany·Sebastian HasslerH Ekkehard Neuhaus
Apr 3, 2014·Journal of Experimental Botany·Fabien ChardonCéline Masclaux-Daubresse
Jan 31, 2012·Plant & Cell Physiology·Yasuhito SakurabaAyumi Tanaka
Feb 2, 2010·The Plant Journal : for Cell and Molecular Biology·Salma BalazadehBernd Mueller-Roeber
Jan 8, 2017·BMC Plant Biology·Adriana PružinskáRenier A L van der Hoorn
May 3, 2014·Journal of Experimental Botany·Jean-Christophe Avice, Philippe Etienne
Dec 13, 2018·Frontiers in Plant Science·Eve-Ly OjanguErkki Truve
May 5, 2020·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Philip M MullineauxEunsook Park
Jan 26, 2021·Frontiers in Plant Science·Sophie JasinskiFabien Chardon

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