ArticlePlant molecular biology2019
Downregulation of the auxin transporter gene SlPIN8 results in pollen abortion in tomato.
Article in Plant molecular biology, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.
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Who cites it
15 citing papers in PubMed, 31 citations in OpenAlex.
- Multiomics Studies on the Effects of High-Temperature Stress on Male Sterility inInternational journal of molecular sciences · 2025Article
- Genome-Wide Identification, Expression, and Interaction Analysis of the Auxin Response Factor andInternational journal of molecular sciences · 2024Article
- New Advances in the Study of Regulation of Tomato Flowering-Related Genes Using Biotechnological Approaches.Plants (Basel, Switzerland) · 2024Review
- The hormone regulatory mechanism underlying parthenocarpic fruit formation in tomato.Frontiers in plant science · 2024Review
- SlMYB72 affects pollen development by regulating autophagy in tomato.Horticulture research · 2023Article
- Glyphosate-Induced Abscisic Acid Accumulation Causes Male Sterility in Sea Island Cotton.Plants (Basel, Switzerland) · 2023Article
- Genic male and female sterility in vegetable crops.Horticulture research · 2023Article
- Hormonal interactions underlying parthenocarpic fruit formation in horticultural crops.Horticulture research · 2022Article
- The SlHB8 acts as a negative regulator in tapetum development and pollen wall formation in Tomato.Horticulture research · 2022Article
- Article
- Two Is Company, but Four Is a Party-Challenges of Tetraploidization for Cell Wall Dynamics and Efficient Tip-Growth in Pollen.Plants (Basel, Switzerland) · 2021Review
- Metabolome and Transcriptome Reveal Novel Formation Mechanism of Early Mature Trait in Kiwifruit (Frontiers in plant science · 2021Article
- ER-Localized PIN Carriers: Regulators of Intracellular Auxin Homeostasis.Plants (Basel, Switzerland) · 2020Review
- A gain-of-function mutation in Brassinosteroid-insensitive 2 alters Arabidopsis floral organ development by altering auxin levels.Plant cell reports · 2020Article
- An Enzymatically Hydrolyzed Animal Protein-Based Biostimulant (Pepton) Increases Salicylic Acid and Promotes Growth of Tomato Roots Under Temperature and Nutrient Stress.Frontiers in plant science · 2020Article
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Authors and funding
7 authors at 1 institution in 1 country.
Funding
Abstract
key messageSlPIN8 is expressed specifically within tomato pollen, and that it is involved in tomato pollen development and intracellular auxin homeostasis. The auxin (IAA) transport protein PIN-FORMED (PIN) plays key roles in various aspects of plant development. The biological role of the auxin transporter SlPIN8 in tomato development remains unclear. Here, we examined the expression pattern of the SlPIN8 gene in vegetative and reproductive organs of tomato. RNA interference (RNAi) transgenic lines specifically silenced for the SlPIN8 gene were generated to identify the role of SlPIN8 in pollen development. We found that SlPIN8 mRNA is expressed specifically within tomato pollen. In the anthers, the highest mRNA expression and β-glucuronidase (GUS) activity of promoter-SlPIN8-GUS was detected during late stages of anther development, when pollen maturation occurred. The downregulation of SlPIN8 did not drastically affect the vegetative growth of tomato. However, in SlPIN8-RNAi transgenic plants, approximately 80% of the pollen grains were identified to be abnormal and lack viability; they were shriveled and flattened. Furthermore, the downregulation of SlPIN8 affected the gene expression of some anther development-specific proteins. SlPIN8-RNAi transgenic plants induced seedless fruits because of defective pollen function rather than defective female gametophyte function. In addition, SlPIN8 was found to localize to the endoplasmic reticulum, consistent with the changes in the auxin levels of SlPIN8-RNAi lines, whereas the level of free IAA was increased in SlPIN8-overexpressing protoplasts, indicating that SlPIN8 is involved in intracellular auxin homeostasis.
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