Carbon/Nitrogen Imbalance Associated with Drought-Induced Leaf Senescence in Sorghum bicolor

PloS One
Daoqian ChenXiping Deng

Abstract

Drought stress triggers mature leaf senescence, which supports plant survival and remobilization of nutrients; yet leaf senescence also critically decreases post-drought crop yield. Drought generally results in carbon/nitrogen imbalance, which is reflected in the increased carbon:nitrogen (C:N) ratio in mature leaves, and which has been shown to be involved in inducing leaf senescence under normal growth conditions. Yet the involvement of the carbon/nitrogen balance in regulation of drought-induced leaf senescence is unclear. To investigate the role of carbon/nitrogen balance in drought-induced senescence, sorghum seedlings were subjected to a gradual soil drought treatment. Leaf senescence symptoms and the C:N ratio, which was indicated by the ratio of non-structural carbohydrate to total N content, were monitored during drought progression. In this study, leaf senescence developed about 12 days after the start of drought treatment, as indicated by various senescence symptoms including decreasing photosynthesis, photosystem II photochemistry efficiency (Fv/Fm) and chlorophyll content, and by the differential expression of senescence marker genes. The C:N ratio was significantly enhanced 10 to 12 days into drought treatment. Le...Continue Reading

References

Apr 20, 2001·Current Opinion in Plant Biology·G M Coruzzi, L Zhou
Jul 1, 1954·The Biochemical Journal·E W YEMM, A J WILLIS
Feb 6, 2004·The Journal of Biological Chemistry·Keiki IshiyamaHideki Takahashi
Apr 22, 2004·The Plant Cell·Maria Encarnación Balibrea LaraThomas Roitsch
Sep 15, 2005·Journal of Experimental Botany·Astrid WinglerNathalie Pourtau
May 4, 2006·Annual Review of Plant Biology·Filip RollandJen Sheen
Dec 21, 2006·Annual Review of Plant Biology·Pyung Ok LimHong Gil Nam
Dec 1, 2007·Proceedings of the National Academy of Sciences of the United States of America·Rosa M RiveroEduardo Blumwald
Jan 7, 2010·Physiologia Plantarum·Eloísa AgüeraPurificación de la Haba
Mar 3, 2010·Annual Review of Plant Biology·Sean R CutlerSuzanne R Abrams
Jul 7, 2012·Journal of Integrative Plant Biology·Marta JuvanySergi Munné-Bosch
Oct 26, 2012·Plant Molecular Biology·Haoshan Zhang, Chunjiang Zhou
Mar 29, 2014·Physiologia Plantarum·Chukwuma C OgbagaGiles N Johnson
Apr 1, 2014·Journal of Experimental Botany·Marta Pintó-Marijuan, Sergi Munné-Bosch
Nov 6, 2014·Journal of Experimental Botany·Astrid WinglerSergi Munné-Bosch
May 1, 2004·Functional Plant Biology : FPB·Sergi Munné-Bosch, Leonor Alegre

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Citations

Mar 26, 2016·Frontiers in Plant Science·Ignacio A Ciampitti, P V Vara Prasad
Mar 23, 2019·Tree Physiology·Craig C BrelsfordT Matthew Robson
Jun 14, 2019·Bulletin of Entomological Research·S RochaM Branco
Feb 25, 2020·Tree Physiology·Natalia WojciechowskaAgnieszka Bagniewska-Zadworna
Sep 16, 2017·Isotopes in Environmental and Health Studies·Kavita SrivastavaGuido L B Wiesenberg
Mar 21, 2018·Frontiers in Plant Science·Carmela R GuadagnoCynthia Weinig
Jan 24, 2019·Frontiers in Plant Science·Georgios VarsamisOliver Gailing
May 30, 2019·International Journal of Molecular Sciences·Yan LiuZhiqiang Lv
Mar 7, 2021·Plants·Kamolchanok UmnajkitikornNeung Teaumroong
Dec 12, 2020·Saudi Journal of Biological Sciences·Alexander Calero HurtadoMarisa de Cássia Piccolo
Oct 13, 2021·Plant Physiology·Nazeer FataftahStefan Jansson

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Methods Mentioned

BETA
Fluorescence
PCR
environmental stresses

Software Mentioned

ImagingWin
SPSS

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