
The E3 ubiquitin ligases PUB25 and PUB26 dynamically regulate cold stress responses in plants
Wang et al. discovered how plants dynamically respond to cold stress mediated by the E3 ligases PUB25 and PUB26.
https://doi.org/10.1093/plcell/koad159
By Xi Wang1, Xiaoyan Zhang1, Chunpeng Song3, Zhizhong Gong1,2, Shuhua Yang1 and Yanglin Ding1
1State Key Laboratory of Plant Environmental…

A new regulatory module controls chlorophyll catabolism in bananas under high temperature
Wei et al. discover a new transcriptional and post-translational regulatory module, MaBAH1-MaMYB60, that regulates chlorophyll catabolism and green ripening in bananas under high temperature.
By Wei Wei, Yingying Yang, Prakash Lakshmanan, Jianfei Kuang, Wangjin Lu, Xuequn Pang, Jianye Chen and Wei…

A ubiquitinated SNARE protein functions in nutrient stress responses
Hasegawa, Reyes et al. discover a link between the ubiquitination of a key membrane trafficking regulator and carbon/nitrogen nutrient stress.
Background: Ubiquitination is a post-translational modification that functions in numerous cellular processes by serving as a molecular signal, such as protein…

Degradation of a Negative Immune Regulator Enhances Immune Responses
Liu et al. investigate regulation of innate immunity in Arabidopsis.
Plant Cell (2021) https://doi.org/10.1093/plcell/koab242
Xiaotong Liu, Yuanyuan Zhou and Dongping Lu
State Key Laboratory of Plant Genomics, Center for Agricultural Resources Research, Institute of Genetics and Developmental…

IRON MAN sequesters BTS to activate iron deficiency response (PNAS)
Plants need to maintain an optimum level of iron (Fe) for normal growth and development. Many Fe-responsive molecular players have been identified in Arabidopsis, including the IRON MAN (IMA) peptides. These peptides are induced by Fe deficiency, but their role in maintaining Fe homeostasis remains poorly…

Plantae Presents: Sophia Stone and Sjon Hartman
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Plantae Presents: Sophia Stone and Sjon Hartman
Recorded April 14
Sophia Stone: The ubiquitin-proteasome system at the crossroads of abiotic and biotic stress tolerance
Sophia Stone earned her PhD at York University, Canada, and completed an HFSP long-term fellowship at the University…

Transport-coupled ubiquitination of BOR1
Yoshinari et al. demonstrate that boron-dependent poly-ubiquitination and subsequent degradation of BOR1 is coupled with its boron transport activity. Plant Cell https://bit.ly/2JYEooF
By Akira Yoshinari
Background: Abundance and activity of nutrient transporters are continuously tuned to both…

MaXB3 Limits Ethylene Production and Ripening of Banana Fruits
Author: Sjon Hartman
ORCID: 0000-0002-6709-6436
Plant Ecophysiology, Institute of Environmental Biology, Utrecht University, Padualaan 8, 3584 CH, Utrecht, The Netherlands
j.g.w.hartman@uu.nl
Ripening of climacteric fruits such as banana (Musa acuminata), tomato (Solanum lycopersicum), and…