Abstract
Plant peroxisomes are organelles enclosed by a single membrane whose biochemical composition has the capacity to adapt depending on the plant tissue, developmental stage, as well as internal and external cellular stimuli. Apart from the peroxisomal metabolism of reactive oxygen species (ROS), discovered several decades ago, new molecules with signaling potential, including nitric oxide (NO) and hydrogen sulfide (H2S), have been detected in these organelles in recent years. These molecules generate a family of derived molecules, called reactive nitrogen species (RNS) and reactive sulfur species (RSS), whose peroxisomal metabolism is autoregulated through posttranslational modifications (PTMs) such as S-nitrosation, nitration and persulfidation. The peroxisomal metabolism of these reactive species, which can be weaponized against pathogens, is susceptible to modification in response to external stimuli. This review aims to provide up-to-date information on crosstalk between these reactive species families and peroxisomes, as well as on their cellular environment in light of the well-recognized signaling properties of H2O2, NO and H2S.
Highlights
For many years, peroxisomes in higher plants have been given different names, such as glyoxysomes during seed germination and leaf senescence, as well as leaf, root and fruit peroxisomes according to their presence in different organs and at different physiological stages (Tolbert and Essner, 1981; Palma et al, 2018)
The three molecular families reactive oxygen species (ROS), reactive nitrogen species (RNS), and reactive sulfur species (RSS) are present in plant peroxisomes, which are considered to be potential producers of reactive species and to play an important role in the cell signaling network
Our limited knowledge of reactive species families needs to be expanded by identifying new peroxisomal protein targets
Summary
Peroxisomes in higher plants have been given different names, such as glyoxysomes during seed germination and leaf senescence, as well as leaf, root and fruit peroxisomes according to their presence in different organs and at different physiological stages (Tolbert and Essner, 1981; Palma et al, 2018). This is explained by the presence of metabolic pathways which appear to be specific to each type of peroxisome. Over the last 30 years, an increasing number of new and often unexpected components and processes in these organelles have been identified (Bueno and del Río, 1992; del Río et al, 1992; Corpas et al, 1994, 2001, 2017a, 2019a, Barroso et al, 1999; Reumann et al, 2009; Clastre et al, 2011; Simkin et al, 2011; Chowdhary et al, 2012; Guirimand et al, 2012; Oikawa et al, 2015; Reumann and Bartel, 2016; Kao et al, 2018; Pan et al, 2018, 2020; Borek et al, 2019), indicating that the plant peroxisomal metabolism and
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