ArticleJournal of integrative plant biology2015
Characterization of tub4(P287L) , a β-tubulin mutant, revealed new aspects of microtubule regulation in shade.
Article in Journal of integrative plant biology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.
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Who cites it
10 citing papers in PubMed, 23 citations in OpenAlex.
- LARP6C orchestrates posttranscriptional reprogramming of gene expression during hydration to promote pollen tube guidance.The Plant cell · 2021Article
- Low-light and its effects on crop yield: Genetic and genomic implications.Journal of biosciences · 2020Article
- Brassinosteroids regulate pavement cell growth by mediating BIN2-induced microtubule stabilization.Journal of experimental botany · 2018Article
- Microtubule Array Patterns Have a Common Underlying Architecture in Hypocotyl Cells.Plant physiology · 2018Article
- Shading Contributes to the Reduction of Stem Mechanical Strength by Decreasing Cell Wall Synthesis in Japonica Rice (Frontiers in plant science · 2017Article
- Hormonal Regulation in Shade Avoidance.Frontiers in plant science · 2017Review
- SHADE AVOIDANCE 4 Is Required for Proper Auxin Distribution in the Hypocotyl.Plant physiology · 2017Article
- Neighbor Detection Induces Organ-Specific Transcriptomes, Revealing Patterns Underlying Hypocotyl-Specific Growth.The Plant cell · 2016Article
- The epidermis coordinates auxin-induced stem growth in response to shade.Genes & development · 2016Article
- Characterization of tub4(P287L) , a β-tubulin mutant, revealed new aspects of microtubule regulation in shade.Journal of integrative plant biology · 2015Article
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Authors and funding
7 authors at 2 institutions in 2 countries.
Funding
Abstract
When sun plants, such as Arabidopsis thaliana, are under canopy shade, elongation of stems/petioles will be induced as one of the most prominent responses. Plant hormones mediate the elongation growth. However, how environmental and hormonal signals are translated into cell expansion activity that leads to the elongation growth remains elusive. Through forward genetic study, we identified shade avoidance2 (sav2) mutant, which contains a P287L mutation in β-TUBULIN 4. Cortical microtubules (cMTs) play a key role in anisotropic cell growth. Hypocotyls of sav2 are wild type-like in white light, but are short and highly swollen in shade and dark. We showed that shade not only induces cMT rearrangement, but also affects cMT stability and dynamics of plus ends. Even though auxin and brassinosteroids are required for shade-induced hypocotyl elongation, they had little effect on shade-induced rearrangement of cMTs. Blocking auxin transport suppressed dark phenotypes of sav2, while overexpressing EB1b-GFP, a microtubule plus-end binding protein, rescued sav2 in both shade and dark, suggesting that tub4(P287L) represents a unique type of tubulin mutation that does not affect cMT function in supporting cell elongation, but may affect the ability of cMTs to respond properly to growth promoting stimuli.
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