ArticlePlant physiology2017
MONENSIN SENSITIVITY1 (MON1)/CALCIUM CAFFEINE ZINC SENSITIVITY1 (CCZ1)-Mediated Rab7 Activation Regulates Tapetal Programmed Cell Death and Pollen Development.
Article in Plant physiology, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.
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18 citing papers in PubMed, 42 citations in OpenAlex.
- Knockdown of Arabidopsis RUS4 impacts pollen coat formation by affecting flavonoid and lipid metabolism.Planta · 2026Article
- RD21-like proteases: key effector hubs in plant-pathogen interactions.Journal of experimental botany · 2025Review
- Vacuolar sorting receptors coordinate lytic vacuolar and autophagic transport for plant effector-triggered immunity.Nature plants · 2025Article
- A powdery mildew core effector protein targets the host endosome tethering complexes HOPS and CORVET in barley.Plant physiology · 2025Article
- Identity Transitions of Tapetum Phases: Insights into Vesicular Dynamics and in Mortem Support During Pollen Maturation.Plants (Basel, Switzerland) · 2025Review
- The TRAPPC8/TRS85 subunit of the Arabidopsis TRAPPIII tethering complex regulates endoplasmic reticulum function and autophagy.Plant physiology · 2025Article
- Canopy insect communities are shaped by the genes and phenotypes of their aspen hosts.PloS one · 2025Article
- The MON1-CCZ1 complex plays dual roles in autophagic degradation and vacuolar protein transport in rice.Journal of integrative plant biology · 2025Article
- Biosynthesis and transport of pollen coat precursors in angiosperms.Nature plants · 2023Review
- Review
- Barley endosomal MONENSIN SENSITIVITY1 is a target of the powdery mildew effector CSEP0162 and plays a role in plant immunity.Journal of experimental botany · 2023Article
- Whole-Transcriptome Analysis Reveals Autophagy Is Involved in Early Senescence ofFrontiers in plant science · 2022Article
- COPII Components Sar1b and Sar1c Play Distinct Yet Interchangeable Roles in Pollen Development.Plant physiology · 2020Article
- βVPE is involved in tapetal degradation and pollen development by activating proprotease maturation in Arabidopsis thaliana.Journal of experimental botany · 2020Article
- Interaction between VPS35 and RABG3f is necessary as a checkpoint to control fusion of late compartments with the vacuole.Proceedings of the National Academy of Sciences of the United States of America · 2019Article
- Salicylic acid reverses pollen abortion of rice caused by heat stress.BMC plant biology · 2018Article
- Transcription Factor OsTGA10 Is a Target of the MADS Protein OsMADS8 and Is Required for Tapetum Development.Plant physiology · 2018Article
- Focus on Flowering and Reproduction.Plant physiology · 2017Article
Corrections and comments
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Authors and funding
11 authors at 2 institutions in 3 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Programmed cell death (PCD)-triggered degradation of plant tapetum is essential for microspore development and pollen coat formation; however, little is known about the cellular mechanism regulating tapetal PCD Here, we demonstrate that Rab7-mediated vacuolar transport of tapetum degradation-related cysteine proteases is crucial for tapetal PCD and pollen development in Arabidopsis (Arabidopsis thaliana), with the following evidence: (1) The monensin sensitivity1 (mon1) mutants, which are defective in Rab7 activation, showed impaired male fertility due to a combined defect in both tapetum and male gametophyte development. (2) In anthers, MON1 showed preferential high level expression in tapetal cell layers and pollen. (3) The mon1 mutants exhibited delayed tapetum degeneration and tapetal PCD, resulting in abnormal pollen coat formation and decreased male fertility. (4) MON1/CALCIUM CAFFEINE ZINC SENSITIVITY1 (CCZ1)-mediated Rab7 activation was indispensable for vacuolar trafficking of tapetum degradation-related cysteine proteases, supporting that PCD-triggered tapetum degeneration requires Rab7-mediated vacuolar trafficking of these cysteine proteases. (5) MON1 mutations also resulted in defective pollen germination and tube growth. Taken together, tapetal PCD and pollen development require successful MON1/CCZ1-mediated vacuolar transport in Arabidopsis.
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