The chilling injury induced by high root temperature in the leaves of rice seedlings

Plant & Cell Physiology
Kensaku SuzukiMasumi Okada

Abstract

Root temperature is found to be a very important factor for leaves to alter the response and susceptibility to chilling stress. Severe visible damage was observed in the most active leaves of seedlings of a japonica rice (Oryza sativa cv. Akitakomachi), e.g. the third leaf at the third-leaf stage, after the treatment where only leaves but not roots were chilled (L/H). On the other hand, no visible damage was observed after the treatment where both leaves and roots were chilled simultaneously (L/L). The chilling injury induced by L/H, a novel type of chilling injury, required the light either during or after the chilling in order to develop the visible symptoms such as leaf bleaching and tissue necrosis. Chlorophyll fluorescence parameters measured after various lengths of chilling treatments showed that significant changes were induced before the visible injury. The effective quantum yield and photochemical quenching of PSII dropped dramatically within 24 h in both the presence and absence of a 12 h light period. The maximal quantum yield and non-photochemical quenching of PSII decreased significantly only in the presence of light. On the other hand, L/H chilling did not affect the function of PSI, but caused a significant decr...Continue Reading

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Citations

Mar 3, 2009·Plant & Cell Physiology·Takeshi Nagai, Amane Makino
May 21, 2014·Comptes rendus biologies·Vimlendu Bhushan SinhaVeena Pande
Nov 15, 2013·Journal of Experimental Botany·Fanying KongQingwei Meng
Jan 15, 2013·The Plant Journal : for Cell and Molecular Biology·Peter Nick
Jul 22, 2014·Plant, Cell & Environment·María V Segura, María J Quiles
Sep 16, 2014·Plant Science : an International Journal of Experimental Plant Biology·Adriana SotoMaría José Quiles
Sep 12, 2015·PloS One·Miriam Paredes, María José Quiles
Aug 24, 2017·Environmental Science and Pollution Research International·Tanveer Alam KhanMohammad Yusuf
Jun 17, 2021·Photosynthesis Research·Mariana Saucedo-GarcíaMarina Gavilanes-Ruíz

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