Autophagy supports biomass production and nitrogen use efficiency at the vegetative stage in rice

Plant Physiology
Shinya WadaHiroyuki Ishida

Abstract

Much of the nitrogen in leaves is distributed to chloroplasts, mainly in photosynthetic proteins. During leaf senescence, chloroplastic proteins, including Rubisco, are rapidly degraded, and the released nitrogen is remobilized and reused in newly developing tissues. Autophagy facilitates the degradation of intracellular components for nutrient recycling in all eukaryotes, and recent studies have revealed critical roles for autophagy in Rubisco degradation and nitrogen remobilization into seeds in Arabidopsis (Arabidopsis thaliana). Here, we examined the function of autophagy in vegetative growth and nitrogen usage in a cereal plant, rice (Oryza sativa). An autophagy-disrupted rice mutant, Osatg7-1, showed reduced biomass production and nitrogen use efficiency compared with the wild type. While Osatg7-1 showed early visible leaf senescence, the nitrogen concentration remained high in the senescent leaves. (15)N pulse chase analysis revealed suppression of nitrogen remobilization during leaf senescence in Osatg7-1. Accordingly, the reduction of nitrogen available for newly developing tissues in Osatg7-1 likely led its reduced leaf area and tillers. The limited leaf growth in Osatg7-1 decreased the photosynthetic capacity of the ...Continue Reading

Citations

Nov 26, 2015·Trends in Plant Science·Simon MichaeliTamar Avin-Wittenberg
Oct 7, 2016·Journal of Experimental Botany·Marien HavéCéline Masclaux-Daubresse
Jan 25, 2018·Journal of Experimental Botany·Elena A MininaPeter V Bozhkov
Mar 15, 2018·Annual Review of Plant Biology·Richard S Marshall, Richard D Vierstra
Oct 19, 2017·Plant Signaling & Behavior·Masanori Izumi, Sakuya Nakamura
Jul 13, 2018·Plant, Cell & Environment·Tamar Avin-Wittenberg
Jun 15, 2019·International Journal of Molecular Sciences·Wentao GouQingjun Xie
Nov 16, 2019·Cells·Qinwu ChenCéline Masclaux-Daubresse
Apr 24, 2020·Journal of Integrative Plant Biology·Hua QiShi Xiao
Jun 11, 2017·Journal of Integrative Plant Biology·Liyu Chen, Hong Liao
Mar 15, 2018·International Journal of Molecular Sciences·Masanori Izumi, Sakuya Nakamura
Aug 6, 2019·Frontiers in Plant Science·Takuya NorizukiTakashi Ueda
Dec 7, 2018·Open Biology·Jie Tang, Diane C Bassham
Feb 7, 2019·Frontiers in Plant Science·Henry Christopher Janse van RensburgSantiago Signorelli
Feb 28, 2019·Annual Review of Plant Biology·Hye Ryun WooHong Gil Nam
Mar 27, 2020·Frontiers in Plant Science·Shigeru HanamataKazuyuki Kuchitsu
Oct 11, 2019·International Journal of Molecular Sciences·Xiaoxi ZhenFan Xu
May 28, 2019·Frontiers in Plant Science·Jinlei YuFan Xu
Sep 30, 2020·International Journal of Molecular Sciences·Wei HuangDe-Jiang Ni
Mar 25, 2020·International Journal of Molecular Sciences·Amara CisseBaohua Feng
Jul 19, 2017·Plant Science : an International Journal of Experimental Plant Biology·Diane C Bassham, Gustavo C MacIntosh
Jul 25, 2017·Seminars in Cell & Developmental Biology·Ping WangDiane C Bassham
Oct 15, 2020·Proceedings of the National Academy of Sciences of the United States of America·Atiako Kwame AcheampongJoseph J Kieber
May 1, 2021·International Journal of Molecular Sciences·Sichul Lee, Celine Masclaux-Daubresse
May 2, 2021·Biochimica Et Biophysica Acta. General Subjects·Sakuya NakamuraMasanori Izumi

❮ Previous
Next ❯

Related Concepts

Related Feeds

Autophagy & Model Organisms

Autophagy is a cellular process that allows degradation by the lysosome of cytoplasmic components such as proteins or organelles. Here is the latest research on autophagy & model organisms