Plant defense responses to biotic stress and its interplay with fluctuating dark/light conditions

Z Iqbal, MS Iqbal, A Hashem, EF Abd_Allah… - Frontiers in Plant …, 2021 - frontiersin.org
Plants are subjected to a plethora of environmental cues that cause extreme losses to crop
productivity. Due to fluctuating environmental conditions, plants encounter difficulties in …

HY5: A pivotal regulator of light-dependent development in higher plants

Y Xiao, L Chu, Y Zhang, Y Bian, J Xiao… - Frontiers in plant …, 2022 - frontiersin.org
ELONGATED HYPOCOTYL5 (HY5), a bZIP-type transcription factor, acts as a master
regulator that regulates various physiological and biological processes in plants such as …

The activities of the E3 ubiquitin ligase COP1/SPA, a key repressor in light signaling

U Hoecker - Current opinion in plant biology, 2017 - Elsevier
Highlights•The COP1/SPA complex suppresses light signaling in darkness.•Functions of the
protein domains in COP1 and SPA proteins.•The structure of the COP1 WD-repeat domain …

BBX21, an Arabidopsis B-box protein, directly activates HY5 and is targeted by COP1 for 26S proteasome-mediated degradation

D Xu, Y Jiang, J Li, F Lin, M Holm… - Proceedings of the …, 2016 - National Acad Sciences
BBX21 (also known as SALT TOLERANCE HOMOLOG 2), a B-box (BBX)-containing protein,
has been previously identified as a positive regulator of light signaling; however, the precise …

COP1 and BBXs‐HY5‐mediated light signal transduction in plants

D Xu - New Phytologist, 2020 - Wiley Online Library
Light is one of the most essential environmental factors affecting many aspects of growth
and developmental processes in plants. Plants undergo skotomorphogenic or …

Illuminating the COP1/SPA ubiquitin ligase: fresh insights into its structure and functions during plant photomorphogenesis

J Ponnu, U Hoecker - Frontiers in Plant Science, 2021 - frontiersin.org
CONSTITUTIVE PHOTOMORPHOGENIC 1 functions as an E3 ubiquitin ligase in plants and
animals. Discovered originally in Arabidopsis thaliana, COP1 acts in a complex with SPA …

UV-B irradiation-activated E3 ligase GmILPA1 modulates gibberellin catabolism to increase plant height in soybean

J Sun, S Huang, Q Lu, S Li, S Zhao, X Zheng… - Nature …, 2023 - nature.com
Plant height is a key agronomic trait that affects yield and is controlled by both
phytohormone gibberellin (GA) and ultraviolet-B (UV-B) irradiation. However, whether and …

The MIEL1‐ABI5/MYB30 regulatory module fine tunes abscisic acid signaling during seed germination

K Nie, H Zhao, X Wang, Y Niu, H Zhou… - Journal of Integrative …, 2022 - Wiley Online Library
The transcription factor ABSCISIC ACID INSENSITIVE5 (ABI5) plays a crucial role in
abscisic acid (ABA) signaling during seed germination. However, how ABI5 is regulated …

Light regulates stomatal development by modulating paracrine signaling from inner tissues

S Wang, Z Zhou, R Rahiman, GSY Lee, YK Yeo… - Nature …, 2021 - nature.com
Developmental outcomes are shaped by the interplay between intrinsic and external factors.
The production of stomata—essential pores for gas exchange in plants—is extremely plastic …

An Arabidopsis SUMO E3 ligase, SIZ1, negatively regulates photomorphogenesis by promoting COP1 activity

XL Lin, D Niu, ZL Hu, DH Kim, YH Jin, B Cai, P Liu… - PLoS …, 2016 - journals.plos.org
COP1 (CONSTITUTIVE PHOTOMORPHOGENIC 1), a ubiquitin E3 ligase, is a central
negative regulator of photomorphogenesis. However, how COP1 activity is regulated by post …