Xie Dang

The microtubule-associated protein RIC1 forms biomolecular condensates to promote the polymerization of microtubule bundles in vitro

Wenting Bai, Yu Chen, Shuning Zhang, Tong Wu et autres

The Arabidopsis thaliana RIC1, a key member of the ROP (Rho GTPase of Plants)-Interactive CRIB motif-containing protein family, has been characterized as a plant-specific microtubule-associated protein. RIC1 is thought to function as a key downstream effector of the small GTPase Rho-of-Plant 6 …

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MYB16 and MYB106 promote conical cell morphogenesis by modulating cuticle production, apoplastic pH , and microtubule organization

Lilan Zhu, Mengting Deng, Xian He, Jia Sun et autres

R2R3 MYB transcription factors, such as MYB16 and MYB106 (MYB16/106) in Arabidopsis thaliana, are recognized for their role in conical cell specification. However, the mechanism by which MYB16/106 orchestrate the morphogenesis of conical cells remains poorly understood. Here, we combined genetic analysis, …

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Methods to Visualize and Quantify Cortical Microtubule Arrays in Arabidopsis Conical Cells

Xie Dang, Lilan Zhu, Huibo Ren, Deshu Lin

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The IPGA1‐ANGUSTIFOLIA module regulates microtubule organisation and pavement cell shape in Arabidopsis

Binqing Chen, Xie Dang, Wenting Bai, Min Liu et autres

Plant cells continuously experience mechanical stress resulting from the cell wall that bears internal turgor pressure. Cortical microtubules align with the predicted maximal tensile stress direction to guide cellulose biosynthesis and therefore results in cell wall reinforcement. We have previously identified Increased …

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PP2A interacts with KATANIN to promote microtubule organization and conical cell morphogenesis

Huibo Ren, Jinqiu Rao, Min Tang, Yaxing Li et autres

The organization of the microtubule cytoskeleton is critical for cell and organ morphogenesis. The evolutionarily conserved microtubule-severing enzyme KATANIN plays critical roles in microtubule organization in the plant and animal kingdoms. We previously used conical cell of Arabidopsis thaliana petals as a …

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ANGUSTIFOLIA negatively regulates resistance to Sclerotinia sclerotiorum via modulation of PTI and JA signalling pathways in Arabidopsis thaliana

Xiuqin Gao, Xie Dang, Fengting Yan, Yuhua Li et autres

Sclerotinia sclerotiorum is a devastating pathogen that infects a broad range of host plants. The mechanism underlying plant defence against fungal invasion is still not well characterized. Here, we report that ANGUSTIFOLIA (AN), a CtBP family member, plays a role in the …

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Mechano-transduction via the pectin-FERONIA complex activates ROP6 GTPase signaling in Arabidopsis pavement cell morphogenesis

Wenxin Tang, Wenwei Lin, Xiang Zhou, Jingzhe Guo et autres

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Auxin Signaling-Mediated Apoplastic pH Modification Functions in Petal Conical Cell Shaping

Xie Dang, Binqing Chen, Fenglian Liu, Huibo Ren et autres

The flowers of angiosperm species typically contain specialized conical cells. Although substantial progress has been achieved regarding the mechanisms underlying flower development, little is known about how petal cells achieve final conical shape. Here, we use 8-hydroxypyrene-1,3,6-trisulfonic acid trisodium salt (HPTS) as …

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Live imaging of microtubules in petal conical cells

Xie Dang, Lilan Zhu, Deshu Lin

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Arabidopsis IPGA1 is a microtubule-associated protein essential for cell expansion during petal morphogenesis

Yanqiu Yang, Binqinq Chen, Xie Dang, Lilan Zhu et autres

Unlike animal cells, plant cells do not possess centrosomes that serve as microtubule organizing centers; how microtubule arrays are organized throughout plant morphogenesis remains poorly understood. We report here that Arabidopsis INCREASED PETAL GROWTH ANISOTROPY 1 (IPGA1), a previously uncharacterized microtubule-associated protein, …

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Rho-of-plant activated root hair formation requires Arabidopsis YIP4a/b gene function

Delphine Gendre, Anirban Baral, Xie Dang, Nicolas Esnay et autres

Root hairs are protrusions from root epidermal cells with crucial roles in plant soil interactions. Although much is known about patterning, polarity and tip growth of root hairs, contributions of membrane trafficking to hair initiation remain poorly understood. Here, we demonstrate that …

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Reactive oxygen species mediate conical cell shaping in Arabidopsis thaliana petals

Xie Dang, Peihang Yu, Yajun Li, Yanqiu Yang et autres

Plants have evolved diverse cell types with distinct sizes, shapes, and functions. For example, most flowering plants contain specialized petal conical epidermal cells that are thought to attract pollinators and influence light capture and reflectance, but the molecular mechanisms controlling conical cell …

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