AtCAP2 is crucial for lytic vacuole biogenesis during germination by positively regulating vacuolar protein trafficking

Kwon, Young–Kyu; Shen, Jinbo; Lee, Myoung Hui; Geem, Kyoung Rok; Jiang, Liwen; Hwang, Inhwan

doi:10.1073/pnas.1717204115

Cited by 14 publications

(10 citation statements)

References 57 publications

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“…How could ACC affect the cell wall? A direct activation of Ca 2+ -signaling by ACC can rapidly affect many processes, including short-term salt responses [59], ROS signaling [60], and vacuolar biogenesis [61]. On the transcriptional level, ACC has been shown to affect the expression of genes such as multiple peroxidases and extensins that act in cell wall crosslinking in an ethylene-independent fashion [62].…”

Section: Interactions With Growth Regulator Signaling 41 Control Ofmentioning

confidence: 99%

The FLA4-FEI Pathway: A Unique and Mysterious Signaling Module Related to Cell Wall Structure and Stress Signaling

Seifert

2021

Genes

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Cell wall integrity control in plants involves multiple signaling modules that are mostly defined by genetic interactions. The putative co-receptors FEI1 and FEI2 and the extracellular glycoprotein FLA4 present the core components of a signaling pathway that acts in response to environmental conditions and insults to cell wall structure to modulate the balance of various growth regulators and, ultimately, to regulate the performance of the primary cell wall. Although the previously established genetic interactions are presently not matched by intermolecular binding studies, numerous receptor-like molecules that were identified in genome-wide interaction studies potentially contribute to the signaling machinery around the FLA4-FEI core. Apart from its function throughout the model plant Arabidopsis thaliana for the homeostasis of growth and stress responses, the FLA4-FEI pathway might support important agronomic traits in crop plants.

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Section: Interactions With Growth Regulator Signaling 41 Control Ofmentioning

confidence: 99%

The FLA4-FEI Pathway: A Unique and Mysterious Signaling Module Related to Cell Wall Structure and Stress Signaling

Seifert

2021

Genes

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“…The plant LVs contain acid hydrolases playing an important role in multiple biological processes such as protein turnover, abiotic, and biotic stresses defense, and keeping cellular homeostasis (Tan et al, 2019), whereas the PSVs mainly function to store proteins (Jiang et al, 2001). Interestingly, PSVs can convert into LVs during seed germination while LVs can also be replaced by PSVs in leaf cells, although the detailed mechanism of the LV-PSV transition is still largely unknown (Jiang et al, 2001;Feeney et al, 2018;Kwon et al, 2018). The soluble proteins in LVs are mainly transported by the PVC/MVB-mediated vacuolar pathway, while the storage proteins in PSVs are transported by diverse routes.…”

Section: Pvc/mvbs and Vacuole Membrane Interaction: Vacuolar Protein mentioning

confidence: 99%

A Diverse Membrane Interaction Network for Plant Multivesicular Bodies: Roles in Proteins Vacuolar Delivery and Unconventional Secretion

Shen

2020

Front. Plant Sci.

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Vesicle trafficking between the membrane-bound organelles in plant cells plays crucial roles in the precise transportation of various materials, and thus supports cell proliferation and cellular polarization. Conventionally, plant prevacuolar compartments (PVCs), identified as multivesicular bodies (MVBs), play important roles in both the secretory pathway as intermediate compartments and the endocytic pathway as late endosomes. In recent years, the PVC/MVBs have been proposed to play important roles in both protein vacuolar delivery and unconventional secretion, but several important questions on the new regulators and environmental cues that coordinate the PVC/MVB-organelle membrane interactions and their biological significances remain. In this review, we first summarize the identity and nature of the plant PVC/MVBs, and then we present an update on our current understanding on the interaction of PVC/MVBs with other organelles in the plant endomembrane system with focus on the vacuole, autophagosome, and plasma membrane (PM) in plant development and stress responses. Finally, we raise some open questions and present future perspectives in the study of PVC/MVB-organelle interactions and associated biological functions.

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“…In addition, ROS production inhibits the glycolytic Glyceraldehyde-3-phosphate dehydrogenase (GPAC1) and recruits it from the cytosol to the MVB/LE. This inhibition leads to an increase of organelle diameter and vacuolar trafficking defects [105,106]. Furthermore, ROS production has been shown to depend on PI3P and diminished levels increase MVB/LE size, vacuolar size and inhibit MVB/LE-vacuole trafficking [107].…”

Section: The Multivesicular Body/late Endosomementioning

confidence: 99%

Plant Cells under Attack: Unconventional Endomembrane Trafficking during Plant Defense

Ruano

Scheuring

2020

Plants

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Since plants lack specialized immune cells, each cell has to defend itself independently against a plethora of different pathogens. Therefore, successful plant defense strongly relies on precise and efficient regulation of intracellular processes in every single cell. Smooth trafficking within the plant endomembrane is a prerequisite for a diverse set of immune responses. Pathogen recognition, signaling into the nucleus, cell wall enforcement, secretion of antimicrobial proteins and compounds, as well as generation of reactive oxygen species, all heavily depend on vesicle transport. In contrast, pathogens have developed a variety of different means to manipulate vesicle trafficking to prevent detection or to inhibit specific plant responses. Intriguingly, the plant endomembrane system exhibits remarkable plasticity upon pathogen attack. Unconventional trafficking pathways such as the formation of endoplasmic reticulum (ER) bodies or fusion of the vacuole with the plasma membrane are initiated and enforced as the counteraction. Here, we review the recent findings on unconventional and defense-induced trafficking pathways as the plant´s measures in response to pathogen attack. In addition, we describe the endomembrane system manipulations by different pathogens, with a focus on tethering and fusion events during vesicle trafficking.

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AtCAP2 is crucial for lytic vacuole biogenesis during germination by positively regulating vacuolar protein trafficking

Cited by 14 publications

References 57 publications

The FLA4-FEI Pathway: A Unique and Mysterious Signaling Module Related to Cell Wall Structure and Stress Signaling

The FLA4-FEI Pathway: A Unique and Mysterious Signaling Module Related to Cell Wall Structure and Stress Signaling

A Diverse Membrane Interaction Network for Plant Multivesicular Bodies: Roles in Proteins Vacuolar Delivery and Unconventional Secretion

Plant Cells under Attack: Unconventional Endomembrane Trafficking during Plant Defense

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